CAT Armored Face Conveyor PMC®-R control for chain tensioner Operation & Maintenance Manual - PDF DO

Media-ID: EM011881-07-EN Doc.-No.: 1999 001 024 BA 00-14 Apr. 2021

Operating and Maintenance Manual PMC®-R control for chain tensioner

SAFETY.CAT.COM

AMENDMENTS AND ALTERATIONS TO THIS PUBLICATION ARE NOT SUBJECT TO NOTIFICATION. CATERPILLAR RESERVES ALL RIGHTS TO THIS PUBLICATION. ITS CONTENT IS PROTECTED BY COPYRIGHT LAWS. NO PART OF THIS PUBLICATION MAY BE REPRODUCED OR TRANSFERRED IN ANY WAY OR FORM WITHOUT THE PRIOR WRITTEN APPROVAL OF CATERPILLAR. CATERPILLAR DECLINES ANY LIABILITY FOR DIRECT OR INDIRECT CONSEQUENCES OF PRINTING ERRORS. WE RESERVE THE RIGHT TO INTRDUCE MODIFICATIONS AS A RESULT OF TECHNICAL DEVELOPMENTS WITHOUT PREVIOUS NOTICE. © 2021 CATERPILLAR ALL RIGHTS RESERVED

CAT, CATERPILLAR, THEIR RESPECTIVE LOGOS, ”CATERPILLAR YELLOW“ AND THE “POWER EDGE” TRADEDRESS, AS WELL AS CORPORATE AND PRODUCT IDENTITY USED HEREIN, ARE TRADEMARKS OF CATERPILLAR AND MAY NOT BE USED WITHOUT PERMISSION.

Table of Contents

Table of Contents 1 About this manual ....................................................................................... 5 1.1 Signs and symbols................................................................................ 6 1.2 Terms and representations................................................................... 7 2 Safety............................................................................................................ 9 2.1 General safety instructions ................................................................... 9 2.2 Operating conditions........................................................................... 10 2.2.1 Intended use ............................................................................ 10 2.2.2 Unauthorized use..................................................................... 10 2.2.3 Ambient conditions................................................................... 10 2.2.4 Prerequisites for operation....................................................... 11 2.3 Personnel............................................................................................ 11 Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

2.4 Operator requirements........................................................................ 12 2.5 Work on and with the machines.......................................................... 12 3 Storage and transport ............................................................................... 14 3.1 Storage ............................................................................................... 14 3.2 Transport ............................................................................................ 15 3.3 Disposal .............................................................................................. 15 4 Installation.................................................................................................. 17 4.1 General information ............................................................................ 17 4.2 Maintenance of the control units......................................................... 19 4.3 Drawings............................................................................................. 20 5 Operation.................................................................................................... 21 5.1 Basic principles................................................................................... 21 5.2 System Overview................................................................................ 21 5.3 System components ........................................................................... 22 5.3.1 The pressure sensor ................................................................ 22 5.3.2 The position-measuring rod ..................................................... 22 5.3.3 Backup sensors ....................................................................... 23 5.3.4 The conveyor signal interface .................................................. 23 5.3.5 The power supply..................................................................... 23 5.3.6 The valve block ........................................................................ 23 5.3.7 The external signal lamp (optional).......................................... 23 5.3.8 The PMC-R .............................................................................. 23 5.4 Control units........................................................................................ 24 5.4.1 The control panel ..................................................................... 24 5.4.2 EMERGENCY STOP / support lock-out switches.................... 24 5.5 Keyboard layout of the PMC-R ........................................................... 25 5.5.1 The menu structure in the PMC-R ........................................... 25 5.5.2 Changing program parameters ................................................ 26 5.5.3 Chain Tensioner....................................................................... 27 5.5.4 LED indicators of the buttons................................................... 28 5.6 Standard display ................................................................................. 29 5.7 Manual control of the system.............................................................. 30

PMC®-R control for chain tensioner

Table of Contents

5.8 The automatic functions...................................................................... 31 5.8.1 Releasing automatic mode ...................................................... 31 5.8.2 Interrupting and switching off the automatic functions ............. 32 5.8.3 Automatic startup (pre-tensioning cycle).................................. 32 5.8.4 The automatic pressure holding function ................................. 34 5.9 The semi-automatic function............................................................... 36 5.10 Backup sensors .................................................................................. 37 5.11 Reverse mode .................................................................................... 37 5.12 Conveyor shutdown ............................................................................ 38 5.13 Backflushing the tensionable drive frame (optional) ........................... 38 5.13.1 Manual backflushing ................................................................ 39 5.13.2 Automatic backflushing ............................................................ 39 5.14 Loading the program........................................................................... 39

6.1 PMC-R ................................................................................................ 43 6.1.1 Design suitable for mining........................................................ 43 6.1.2 EMERGENCY STOP / support lock-out switches.................... 43 6.1.3 Rear side of the PMC-R........................................................... 44 6.1.4 Pin assignment of the PMC-R plug-type connections.............. 44 6.1.5 Brass retaining strip ................................................................. 46 6.1.6 Identification............................................................................. 46 6.2 Solenoid driver module ....................................................................... 47 6.3 Coding plug......................................................................................... 48 6.4 Cables................................................................................................. 49 6.4.1 Cable types .............................................................................. 49 6.4.2 Connector types....................................................................... 51 6.4.3 Pin assignments....................................................................... 51 6.4.4 SKK plug connectors ............................................................... 52 6.4.5 Loading cable........................................................................... 52 6.5 Optocoupler PMC II2 BIDI coupler ..................................................... 53 6.6 Sensors............................................................................................... 54 6.6.1 Pressure sensor IPS 600 ......................................................... 54 6.6.2 Reed rod .................................................................................. 56 6.7 Signal lamp ......................................................................................... 57 7 Parameter ................................................................................................... 60 7.1 Measured values ................................................................................ 60 7.2 Error messages .................................................................................. 61 7.3 Global ................................................................................................. 63 7.4 Local ................................................................................................... 63 7.5 Service................................................................................................ 63 7.6 Conveyor spraying.............................................................................. 64 7.7 Valve cycle counter............................................................................. 65 7.8 Automatic pressure control ................................................................. 65 7.9 Diagnosis ............................................................................................ 71 7.10 Pre-tensioning..................................................................................... 75 7.11 Stored error messages ....................................................................... 78

PMC®-R control for chain tensioner

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6 Technical data............................................................................................ 43

About this manual

1

1 About this manual This chapter contains important information that makes it easier for you to use this manual. You will also get information about the structure of the manual and the symbols, characters and abbreviations used and frequently used terms. application

This operating manual belongs to the control of a chain tensioner with system components of the PMC® system

PMC®

PMC® is a system of devices and associated hardware intended for safe control of machines under extreme conditions. The designation PMC® is legally protected and is the property of Caterpillar Global Mining Europe GmbH, Lünen.

For the purpose of improved legibility, the registered trademark symbol ® will henceforth not be used in this operating manual.

applicable operating manual

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category according to ATEX directive

new operating manual

target group

If you use an operating manual that is not intended for your hardware or software, you are endangering yourself, other people and items of equipment.

The system components of the PMC system meet the European directive 2014/34/EU, device group I, category M2, in compliance with EN 50014-1997 + Revisions 1 and 2 Intrinsic safety "i" EN 50020-2002.

Request a new operating manual immediately if the current operating manual is no longer complete or has become illegible.

The operating manual is intended for those persons who set up the PMC system, work with it, make settings and perform troubleshooting.

All persons working on the face, at the edge of the face or in the entry must read this operating manual.

This includes persons who: are in charge of transport, perform installation/removal work, correct malfunctions, perform daily routine work on the face, carry out maintenance work, carry out repair work.

Supervisory personnel who: initiate the activities mentioned above and/or supervise them.

efficiency

This operating manual is intended to help you work efficiently and safely with our product. It contains important information on all activities relating to the product.

Take the time to read this operating manual in its entirety. Pay particular attention to the respective safety instructions. Familiarize yourself well with the appearance and meaning of the safety and information symbols.

The operating manual is to be stored within reach of the PMC system and to be kept readily accessible for operating and maintenance personnel. It must be passed along to all owners or users of the PMC system. Every supplement received must be inserted into the operating manual.

safety

Carefully read through the chapter "Safety". This chapter contains important information indicating possible hazards.

Observe the information given and follow the instructions.

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1

About this manual Signs and symbols

liability exclusion

Caterpillar Global Mining Europe GmbH assumes no liability for damage or operating malfunctions resulting from non-compliance with this operating manual.

The warranty provided by Caterpillar Global Mining Europe GmbH becomes void in the event of non-compliance with this operating manual.

service partner

Please contact your service partner for spare part requests or for the clarification of technical questions.

1.1 Signs and symbols DANGER

If not observed, you or your coworkers will be seriously injured or killed.

Follow the described instructions!

WARNING The combination of the signal word WARNING and a corresponding symbol warns you of a potential danger with a moderate personal risk!

If not observed, you or your co-workers might be seriously injured or killed.

Follow the described instructions!

CAUTION The combination of the signal word CAUTION and a corresponding symbol indicates a potential personal risk!

If not observed, you or your co-workers could suffer minor to moderate injuries.

Follow the described instructions!

NOTICE The combination of the signal word NOTICE and the adjacent symbol indicates a potential risk of damage to the machine!

If not observed, material damage might occur on the machine.

Follow the described instructions!

Tip The signal word TIP indicates useful tips and information!

This information will help you become more familiar with the machine and allow you to prepare your work more exactly.

Observe the provided tips and information!

Important information The combination of the signal words IMPORTANT INFORMATION and the adjacent symbol indicates important information or other operating manuals which must be observed at this place.

Observe the information and read the specified operating manuals.

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The combination of the signal word DANGER and a corresponding symbol warns you of an immediate danger with a high personal risk!

About this manual Terms and representations

1

1.2 Terms and representations lists

Lists are marked by triangular, yellow eye-catching symbols at the beginning of the line. Sublists are marked with gray eye-catching symbols.

Example: Columns with error messages follow for each value: Sensor not configured!

Short circuit!

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instructions

Instructions begin with the prerequisites. The prerequisites must be met prior to proceeding with the instruction. Prerequisites are identified by a checkmark.

The individual instruction steps then follow as a numbered list. Intermediate results (if specified) are marked within the individual steps as non-numbered lists with an arrow. The end of an instruction is followed by the result of the action.

Results are indicated by checkmarks on a gray circle. Follow the instructions step by step. Proceed with the instructions steps only if the required prerequisites are met.

Structure: Prerequisite that must be met prior to the instruction 1. First step 2. Second step ð Intermediate result 3. Last step Result after completing instructions Example: A PC is to be switched off.

No external application has access to the PC. 1. Save all files you worked on last.

2. Close all running programs. ð All programs (applications) are closed.

3. Shut down the PC. The PC is off.

links [ 3]

At various locations you will find a reference to another section of text, a table or a figure. In a printed document, you can turn to the indicated page. In a PDF document, the cursor appears in the form of a hand on the reference ( ). The reference text always has square brackets with a gray arrow head ( ) and a page number. Left-clicking on the reference link takes you to the indicated page in the document. To facilitate returning easily to the starting point from this location, you should place the appropriate buttons permanently in the toolbar of the software you use to read PDF documents. In Acrobat Reader, you can make the following settings: "View" - "Show/Hide" - "Toolbar Items" - "Page Navigation" - "Show All Page Navigation Tools".

The key combination [Alt + ￩] also returns you to the starting point.

The following example is not a genuine reference, but shows its appearance. ... see "Table of Contents" [ 3].

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1

About this manual Terms and representations

You can affect control by means of parameters. When you have the appropriate authorizations, you can set and change the content of parameters. Typical parameters include min/max values (e.g. pressures). When they are reached, the control initiates an action (e.g. message or shutdown). Using parameters, you can also determine whether a default state exists (e.g. automatic mode active or inactive).

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parameters

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Safety

2

General safety instructions

2 Safety This chapter provides you with important information about your safety. Pay special attention to this chapter. The safety instructions and rules of conduct are intended to help you avoid hazardous situations and perform the necessary work as safely as possible.

2.1 General safety instructions state of the art technology

The system components are state of the art and have been manufactured in accordance with approved safety regulations.

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You and others can nevertheless be exposed to dangerous situations, e.g. as a result of environmental influences, machine damage or operator errors.

Do not make any modifications or changes. The devices may only be opened and worked on by the manufacturer or persons specially trained by the manufacturer. use within the EU

The European directives/standards which appear in this operating manual must be applied if the devices and system components are used within the European Union.

use outside the EU

If the device is used outside the EU, the directives and standards which apply in the respective countries must be observed.

accident prevention regulations

In addition to this operating manual, make sure you also observe the legal provisions and regulations for accident prevention in your country.

Observe the safety and accident prevention regulations of the: Mining company Mines inspectorate Employers' liability insurance association for mining.

additional operating manuals

personal protective equipment

orderliness and cleanliness

Also read the operating manuals of the components required to operate the face, such as electric motors as well as any other neighboring machines which may be affected by the control device. Clarify any questions before starting work.

Always wear your personal protective equipment. This also includes ear protectors as the noise emitted by the system may at times exceed 85 dB(A), (e.g. when the conveyor is being emptied).

Keep the machine as clean as possible. Ensure that the operating symbols and other information signs are recognizable. Säubern Clean the control elements at regular intervals.

Maintain the signal and lighting systems in working condition.

Pay special attention to the system's acoustic and optical start-up warnings.

Only start the machine if it is in perfect technical condition and all safety equipment, e.g. EMERGENCY STOP devices, cover plates etc., is installed.

Never reach into or enter areas between machine components which can move.

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2

Safety Operating conditions

2.2 Operating conditions 2.2.1 Intended use The PMC system was developed and manufactured for controlling underground systems. This PMC system is configured for controlling the chain tensioner.

Use the PMC system components only as intended.

2.2.2 Unauthorized use Use that is not described in this document,

constitutes unauthorized use and must not be performed with the PMC system.

Caterpillar Global Mining Europe GmbH cannot be held liable for damage caused by unauthorized use.

2.2.3 Ambient conditions Suitable measures must be taken by the operator to mitigate explosion hazards due to firedamp and the ignition of dust which might occur in a mine.

That includes: adequate and consistent ventilation water spraying system If the firedamp concentration in the free cross-section of the parts of the face which are continuously ventilated reaches a percentage of the lower explosion limit (LEL) defined by applicable national legislation, the M2 device must be switched off. The limit values can be found in your national laws.

DANGER Explosion hazard The power to the supply cable and control system cable must be switched off if the local gas concentration in the mining equipment areas exceeds the permissible parameters given in the safety regulations for coal mines.

It may only be restarted by an authorized person.

The atmosphere in the mine should be monitored at hazardous points to allow the power supply of all devices to be switched off, except those which are relevant for safety and suitable for use in explosive atmospheres.

The M2 equipment must be stopped immediately and secured against restarting if the firedamp protection systems are found to be damaged.

The control and peripheral equipment of the MMC system marked with “IS” are intrinsically safe and manufactured according to the approved technical regulations.

The use of components marked with "IS" has no effect on the safety regulations and the regulations concerning firedamp protection at the mining company.

You may only open live control units in an environment which is not potentially explosive, even if there is no voltage. Observe the instructions on the device housings.

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that is not expressly listed as intended,

Safety

2

Personnel

A few components contain batteries which you have to change occasionally.

CAUTION Danger of explosion during battery change Only open the control units in an environment which is not potentially explosive.

2.2.4 Prerequisites for operation

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The entire PMC system must not be put into service until it has been determined by an appropriately trained and authorized person that the machine controlled by the system complies with European Directive 2014/34/EU and the DIN EN1710 standard.

Since the control system delivered is only part of an overall system, the operator must meet the safety requirements required for the devices/components not included with this system/those necessary for operation or install the required safety equipment. This must be labeled according to the legal provisions applicable at the time of its placement on the market. safety requirements according to DIN EN 1552

M2 equipment may only be operated once the safety requirements according to DIN EN 1552 have been met. This includes: equipment for preventing unauthorized startup, startup warning systems, safe shutdown command systems, emergency-stop systems, dust extraction equipment, noise protection, Warnings All electrical equipment required to operate the face must be designated according to the legal provisions applicable at the time when it is placed on the market.

2.3 Personnel The machine may only be operated by skilled or trained personnel.

As a fundamental rule, installation and repair work may only be carried out by personnel who have been adequately trained for these particular requirements.

Repair work on the system components may be performed only by service personnel of the manufacturer, or a company authorized by the manufacturer. qualification

A skilled worker is someone who, based on his special training and experience, has sufficient knowledge and is familiar with the relevant regulations.

A skilled worker can carry out the work assigned to him. He can recognize potential hazards and take the necessary measures to eliminate them. He also has the required repair and installation knowledge.

An instructed person is someone who has been instructed with regard to the tasks assigned to him and the potential hazards which arise due to improper behavior, and, if applicable, has been trained/instructed concerning the necessary safety equipment and protective measures. The instructed person is able to work while looking ahead, recognize hazards and act accordingly.

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2

Safety Operator requirements

2.4 Operator requirements Operators are responsible for ensuring that the machine is always in a technically serviceable condition. This includes for example: Regularly maintenance and checking the machine in accordance with the provided schedule Ensuring sufficient supplies for operation such as electricity, water or hydraulic fluid Regularly checking all safety equipment (document the test results).

If any irregularities are noticed during operation, investigate them immediately and shut down the machine until any problems have been rectified

2.5 Work on and with the machines Always work with great concentration and familiarize yourself with your working environment.

Inform your colleagues about: where your exact site is, the work you are carrying out, how much time you will probably need EMERGENCY STOP

Make yourself familiar with the EMERGENCY STOP equipment on the face.

Press the EMERGENCY STOP switch immediately in the event of faults or irregularities in operation. Notify your supervisor of any peculiarity, so that necessary action can be taken immediately.

Actuate the EMERGENCY STOP SWITCH also if safety equipment, such as firedamp protection systems, breaks down.

Installation and commissioning storage/transport of parts

Do not store any materials or components in the travel way or in your working area.

inform involved persons

Inform the persons involved about the planned transport route and the expected duration of the transport.

transport safety devices

Make sure the transport safety devices/packaging are fitted properly. Never walk or stay under unsecured components or suspended loads.

use system brackets

inclined face environmental protection

Only use retaining strips from the PMC system as brackets. Do not damage any connector insertions or other fitting surfaces.

On inclined faces, secure all components by chains, e.g., to the supports.

When working with oils, greases, and other chemical substances, observe the safety regulations that apply to the product.

Always dispose of materials contaminated with oil, grease, or other chemical substances in an environmentally acceptable manner. Inform the supervising personnel and the face crew about any maintenance and repair work required.

Provide them with information on the intended work and its probable duration.

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Cordon off your working area over a wide range to avoid endangering other persons. Secure the devices against unauthorized and unintentional restarting before all work.

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Make sure that all of the signage on the machine is legible, and immediately replace any lost signs

Safety Work on and with the machines

replacing components

2

Stop and lock out the devices to secure them against restarting before replacing any defective components.

Remove any defective components from the face immediately to avoid hindering the face crew. This measure also helps to prevent the unintentional re-installation of these defective components elsewhere.

Pass on these components for servicing without delay.

On inclined faces, secure the replacement parts with chains or lifting tackle, for example.

Only use replacement parts that meet the technical requirements. This is only guaranteed if using genuine spare parts from Caterpillar Global Mining Europe GmbH. Please refer to the spare parts lists for the order numbers.

protective devices

Refit any removed protective devices immediately after completing work, and check that they are working properly.

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replacement parts

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3

Storage and transport Storage

3 Storage and transport 3.1 Storage General This chapter contains important information on the correct storage and safe transport of the components. Observance of the instructions and manuals will increase the service life and reliability of the system components. Reading this chapter thoroughly will also help you make your day-to-day work easier.

Storing of the equipment

no direct exposure to sunlight

dirt and moisture

Components coated with temporary anticorrosion protection are protected for about six months.

Protect the equipment from direct exposure to sunlight. Only store electrical equipment, electronic components, spare parts made from rubber or plastic, such as seals, cables and hoses in closed rooms at 15°C to 25°C. Protect all equipment parts from dirt and moisture.

Do not remove, in particular, any plugs, temporary covers or protective caps.

Use the plugs, temporary covers and protective caps if you wish to put the equipment into storage after using it. Avoid any damage to the plug-type connections.

storage

Never store electronic equipment outdoors!

The computers should be checked after a storage period of four years at room temperature, since the installed battery is discharged after this amount of time.

It must then be replaced.

The battery may only be replaced above ground by personnel authorized by Caterpillar.

If the PMC component is used, the battery has a longer service life. A battery failure does not have any safety-relevant consequences.

After a storage period of about two years, it is necessary for the system components to be checked before use. This is to see whether any damage has occurred during storage.

Seals, hose lines and lines are subject to natural aging even if they are stored properly. Do not continue to use these components, since malfunctions and ghost functions cannot be ruled out.

Tip Problems from different programs Make sure that incoming stock is stored separately from the old stock, notably in such a manner that computer components of the same age are stored together, to avoid conflicts between different program versions.

Make sure that display covers, keyboard protective covers and plug-type connections are not damaged when placing them in storage.

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anticorrosion protection

Storage and transport

3

Transport

3.2 Transport transport container, dimensions and weights

Make sure you observe the technical data sheet. It provides you with information about: Dimensions Weights The computers and interfaces of the PMC system which belong to the same operating point can be transported in the same transport container. You must make sure, however, that they are not packed together with heavy and/or sharp-edged materials to avoid damage to displays, keyboards, cables and plug-type connections.

The corresponding lines and hose cables must also be packed and transported carefully to avoid damage to the plug-type and screw connections.

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magnetic fields

Equipment that is susceptible to damage by strong magnetic fields is not allowed to be transported using magnetic cranes. This applies, for example, to electronic devices and cylinders with reed rods for stroke measurement.

NOTICE Damage of the components Load and transport the components carefully with concentration. When doing this, protect yourself from injury due to falling parts by wearing gloves and safety work shoes. lower temperatures

No sudden strain may be applied during transport at low temperatures.

Electronic equipment should be transported very carefully at low temperatures (below −10°C) since all materials become brittle and fragile at low temperatures. For this reason, cables may not be installed at temperatures below +4°C. If cables and lines are transported underground at this low temperature, they should be left to warm up to ambient temperatures before being installed there.

sea transport

Line and cable connections must be protected carefully for sea transport. The equipment must be packed carefully so that it is sea-proof.

air freight

When transporting the controls via air freight, the vent screws on the devices must be opened so that large differences in pressure do not damage the displays and keyboard protective covers. This is usually done by Caterpillar personnel before dispatch via air freight.

NOTICE Open vent screws Make sure that the vent screws are closed before starting up the control units so that the electronic components are protected from dirt, moisture and firedamp (intrinsically safe).

3.3 Disposal packaging operating fluids

Dispose of packaging material in accordance with local regulations.

Comply with national environmental protection regulations and the manufacturer's instructions when disposing of operating fluids.

Prepare suitable containers to collect the operating fluid.

machine parts

Clean machine parts and disassemble to the point where fully sorted disposal is possible.

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3

Storage and transport Disposal

electrical and electronic components

If possible, separate electrical and electronic parts from remaining waste and recycle.

Disposal should always comply with the regulations of the country where the item is being used.

Material / substance

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Recycle

Residual waste

Special waste

Metals

x

--

--

Cable

x

--

--

Seals

--

x

--

Plastics

x (if possible)

(x)

--

Composites

x (if possible)

(x)

--

Electrical and electronic components

x

--

--

Operating fluids

--

--

x (disposal as specified in safety data sheet)

Packaging

x

--

--

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Tab. 1: Type of disposal (country-specific differences are possible)

Installation

4

General information

4 Installation 4.1 General information General information The PMC-R control unit is installed in a stainless steel housing and can be freely programmed for electrohydraulic tasks. It is intrinsically safe, therefore it may be used in underground areas susceptible to firedamp.

The keyboard can be adapted to different tasks (programmed). Above ground and in a room with non-potentially explosive atmosphere, the keypad protective cover can be replaced with other key symbols to meet the respective tasks.

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Damage caused by incorrect installation Control units, peripheral devices and the machines to be controlled can be damaged seriously due to incorrect installation. Install and configure the PMCR system initially only under supervision of expert personnel of Caterpillar Global Mining Europe GmbH. The PMC-R system is illustrated in drawings for the installation.

The original drawings contain all parts numbers which refer to the parts lists.

The drawings shown here are only intended for general understanding. They are not design drawings. Document numbering is based on the numbering system described above.

For the design-specific layout, the original drawings with parts lists and parts numbers should be used for the precise assignment. Help in finding the individual system components can be found in Chapter of this operating manual, in which the main system components are illustrated by means of drawings and/or pictures. In addition, technical details and operating modes are explained.

A wooden board as transport safety device can be found on the rear side of the PMC-R. It is fastened with 10 mm Allen screws. You need these screws to fasten the PMC-R to the brass retaining strip.

Tools required The following tools are required to install system components underground: Installation of the brass retaining strip and the PMC-R on the brass retaining strip: 10 mm Allen wrench Actuation of the vent screw: 4 mm Allen wrench Replacing a keyboard protective cover (only above ground): 4 mm Allen wrench Other installation work: All other installation work in the PMC-R system can be performed with a sturdy screwdriver and water pump pliers. System components are installed on carrier plates etc. with customary tools for mechanical engineering/mining.

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4

Installation General information

Pressure equalization at electronic control systems The controls must be vented on site after installation and transport. There is a vent screw for this purpose on the side of the housing (figure below).

Open the screw to equalize the pressure and close it again afterwards (firmly by hand, 5 Nm).

Important information Securing ventilation All control systems have a vent screw (hex socket, 4 mm width across flats), which must be loosened a few turns at the place of operation in order to equalize the pressure between the ambient air and the air inside the housing.

When the pressure is equalized, you can hear a hissing noise.

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Fig. 1: Vent screw PMC-R

NOTICE Damage to the PMC-R due to poor ventilation If this venting is not done, the keyboard protective cover and the keyboard could be damaged.

When transporting to low depths, the keyboard can also malfunction, as the keyboard protective cover will be pressed onto the keyboard switches.

When transporting by air, this screw is loosened before shipping to ensure the described pressure equalization during the flight (great altitude difference).

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Installation

4

Maintenance of the control units

Important information Avoid contamination, ensure firedamp protection The vent screw must be screwed in firmly by hand after transport to avoid contamination by dust and moisture and to ensure firedamp protection (intrinsically safe).

Only tighten the screw by hand. Higher torques could destroy the O-ring seal behind it.

4.2 Maintenance of the control units

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Maintenance of the control units Only use suitable tools for maintenance work. In general, the PMC-R control computer is maintenance-free. The warning devices (alarm horn on the bottom of the PMC-R and jumbo LED on the control panel) must be regularly cleaned (recommendation: a brush with water attached). Occasionally cleaning the display contributes to operational safety. If the membrane keypad is defective, you should immediately remove the device and exchange the membrane keypad with a new one above ground to avoid any soiling of the switching contacts.

Dirty contacts can lead to malfunctions!

Mounting bolts The PMC-R computers are each screwed in place with a brass retaining strip, which, in turn, is fastened onto the shield or a control panel at an appropriate place. The PMC-R computer has two compression springs on the rear side of the device which press against the brass retaining strip in order to support its removal during dismantling. While fixing it in place, the computer can jam against the brass retaining strip if the mounting bolts are not tightened evenly.

This causes damage to the connection contacts, both in the PMC-R as well as the connection cable.

Always tighten mounting bolts evenly!

Replacing the battery The buffer battery of a PMC system control unit will last for 4 years without power supply at room temperature. Deviating temperatures will reduce the service life of the battery. Even with a constant power supply to the PMC system, the battery's service life will be limited due to its self-discharge. Please schedule the replacement of the battery before this time expires, otherwise the control program may be unexpectedly lost without any power supply.

The battery is only allowed to be replaced above ground by personnel authorized to do so by Caterpillar Global Mining Europe GmbH.

NOTICE Program failure due to lack of power supply The control program will be lost if the service life of the battery is exceeded without power supply. Have the battery replaced in time.

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4

Installation Drawings

4.3 Drawings

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1

BIDI crossover

2

BIDI coupler

3

PMC-R

4

coding plug

5

chain clamping cylinder reed rod 2

6

chain clamping cylinder reed rod 1

7

chain clamping cylinder pressure sensor 2

8

chain clamping cylinder pressure sensor 1

9

solenoid driver module

10

valve chain clamping cylinder

11

valve backflush of tensionable drive frame (optional)

A

control, face conveyor

B

underground central control

PMC®-R control for chain tensioner

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Fig. 2: Chain tensioner, face conveyor

Operation Basic principles

5

5 Operation 5.1 Basic principles The conveyor chain tensioning system was developed to allow optimal adaptation of the chain tension/chain force to the respective prevailing conveyor conditions. This gives you the ability to adjust the chain tension to the natural lengthening of the chain, the characteristics of the coal being mined, the horizontal orientation of the conveyor and changing friction forces.

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Operation of the system is based on the pressure measured in front of the check valve for the tensioner cylinder, which is recorded by the pressure sensor and is equivalent to the chain power.

On a conveyor not equipped with this kind of a system, the chain tension must be adjusted to the maximum possible loading condition, which means that it is much too high for 80% of all operating conditions, thereby increasing the wear in the conveyor system considerably. Therefore, to avoid an obviously slack chain, the chain tension will be higher than necessary for normal operation conditions in any case.

In contrast, the automatic chain tensioning system attempts to set an optimal chain tension for all possible load states of the conveyor. This results in a noticeably longer service life as well as less wear and reduced maintenance on the chain, chain wheel and drive components.

To maintain the chain force at an optimal level even under unfavorable conditions, the system has been expanded through addition of a backflushing function.

5.2 System Overview The basic electrical system consists essentially of a pressure sensor and a position-measuring reed rod, both of which are connected to an electrohydraulic control unit. This unit is located on the tail gate close to the hydraulics for the tensioning system. The chain tension is controlled by means of one or more hydraulic tensioner cylinders.

The control unit itself consists, on the other hand, of the "PMC-R" single control unit known from face automation, which controls a double solenoid valve by means of a solenoid driver module which triggers the movements of the ten-

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5

Operation System components

sionable drive frame. The PMC-R control is equipped with a digital communication link to the PMC-D (control for the conveyor drive) to transmit the location of the mining machine.

1

tail gate

2

chain clamping cylinder

3

chain clamping cylinder reed rod

4

chain clamping cylinder pressure sensor

5

head gate

6

external signal lamp (optional)

7

dual power supply

8

valve block

9

solenoid driver module

10

PMC-R

11

PMC-D

12

central control

5.3 System components 5.3.1 The pressure sensor The pressure sensor (4) measures the piston-sided cylinder pressure in front of the check valve and converts it into an electrical voltage signal for reading into the control unit.

5.3.2 The position-measuring rod The position-measuring rod (reed rod) (3) is for measuring the extension length of the tensioner cylinder. It can be mounted in the cylinder itself, or externally on the tensionable drive frame. The cylinder position is converted into an electrical voltage singal for reading into the control unit.

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Fig. 3: System overview of chain tensioner

Operation System components

5

5.3.3 Backup sensors A second pressure sensor (4) and a second position-measuring rod (reed rod) (3) monitor the primary sensors by comparing the measured values. If one of the primary sensors fails, control can be switched to the backup sensors.

5.3.4 The conveyor signal interface The chain tensioner system normally operates automatically on the basis of data from the PMC-D of the gearbox control system. Bidirectional data transmission is carried out via a serial communications interface.

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5.3.5 The power supply The PMC-R is supplied with 12 V DC by an external voltage supply (7) through connection A1. An auxiliary supply through the power supply for the face control system is not recommended, because the conveyor should still be capable of running even when there is a failure in the face control system.

5.3.6 The valve block A double solenoid valve (8) is actuated by the PMC-R (10) through the solenoid driver module (9) to retract and extend the tensioner cylinder.

5.3.7 The external signal lamp (optional) A readily visible signal lamp (6) with a red warning indicator can be found near the installation panel. It lights up if the tensioner cylinder reaches or exceeds the warning value ("Max. warning", "Min. warning").

5.3.8 The PMC-R The PMC-R (10) mounted on the tail gate forms the heart of the tensioning system. It processes the electric measurement values of the connected sensor system and controls the tensioner cylinder according to the automatic tensioning sequence. A special program and a coding plug differentiate this special PMC-R control system from any face control units that may be present.

EMERGENCY STOP and locking switch The large mushroom-shaped buttons are safety switches. The red switch is the EMERGENCY STOP switch. The black switch is the locking switch. They prevent any further execution of the active processes via the solenoid driver module.

EMERGENCY STOP switch Locking switch

Since the chain tensioner is an isolated system, the EMERGENCY STOP switch and locking switch have a similar function in this case. Additional information can be found at "EMERGENCY STOP / support lock-out switches" [} 24].

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Operation Control units

5.4 Control units Important information Parameter changes Do not change any parameters or any other settings before you have read the operating manuals for the PMC-R system and the operating manuals for the machines to be controlled and the neighboring machines.

5.4.1 The control panel The control panel consists of a keypad, display and LEDs.

An infrared sensor is located above the stop key [S], above which what is referred to as a "jumbo LED" is located for displaying warnings and the operation of automatic functions (sequence, order, etc.).

There are various membrane keypads which are adapted specifically to the different control tasks.

The row of keys below the two-row display (keys K to R) is for navigation in the program menu (see following sections).

The large mushroom-shaped buttons are safety switches. The red switch is the EMERGENCY STOP switch. The black switch is the locking switch used to protect against unwanted movement of the equipment.

5.4.2 EMERGENCY STOP / support lock-out switches EMERGENCY STOP switch Shield locking switch

The EMERGENCY STOP and support lock-out switches are for protection against undesired shield movements in an emergency or during repairs.

The solenoid driver module is switched off (all poles disconnected) via hardware. The connected equipment will not perform any electrically controlled movements. The current state is retained, a defined/secure state is not approached.

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PMC®-R control for chain tensioner

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Fig. 4: Front of PMC-R

Operation

5

Keyboard layout of the PMC-R

hydraulic system

Only in the event of an EMERGENCY STOP Depressurizing the hydraulic system may take place at the pump station, depending on the mining company and the corresponding approval.

DANGER Valve functions despite EMERGENCY STOP Operating the EMERGENCY STOP or shield locking switch interrupts supply of electric power to the solenoid driver. Actuation by operating the valves hydraulically is however still possible, but can cause severe injury.

1. Never operate the valves hydraulically if the shield locking or EMERGENCY STOP switch has been operated!

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cancellation

The EMERGENCY STOP and support lock-out switches are canceled by pulling the corresponding switch.

5.5 Keyboard layout of the PMC-R 5.5.1 The menu structure in the PMC-R Fig. 5: Menu structure

With the keys K (column to the left) and R (column to the right), the corresponding menu column is selected.

The L and M keys scroll up and down in the menus.

The LED display is used to indicate the measured values, system states and program parameters.

A display menu with several columns and lines is used to present this information.

Each menu column consists of a menu header, which is displayed when the menu column is changed, and a varying number of text messages, functions, parameters or measured values, depending on the requirements.

If no keyboard action is triggered, the display automatically returns to the header line of the standard menu column (DEFAULT DISPLAY) after a short while.

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Operation Keyboard layout of the PMC-R

5.5.2 Changing program parameters Some menu items show program parameters. Such values are marked with an asterisk (*) before the specified value.

To change a displayed parameter value, the T [ENTER] key must be pressed first. If a question mark (?) appears, then numeric input mode is active. Some keys have a special function here, which differs from their normal function: Numeric input is possible using keys 0 to 9.

To delete a single digit entered use the K [<<] key.

To end input, the T [ENTER] key must be pressed again. Then the value entered will automatically be saved as the value of the parameter.

To cancel input and return to normal mode, use the S key.

Most parameters are password-protected. Before these parameters can be changed, the correct numeric password must be entered. The password must comply with the minimum password level required. If several parameter changes are made in immediate succession, it is not necessary to enter the password again.

The password request appears each time an attempt is made to change a protected parameter.

The password is a normal numeric value which can be entered using keys 0 to 9.

An exclamation mark (!) appears on the display for each password digit entered. The digit actually entered remains secret and is not shown.

A single digit can be deleted with the K [<<] key.

To cancel the entry of the parameter without entering its correct value, press the S key. Then no parameter change will be possible, however.

To complete the password after entering it correctly, press the T [ENTER] key. Now the previously selected parameter will be displayed together with a question mark (?) after the parameter text. The numeric value of the parameter can be entered as described above.

If the wrong password was entered or a higher password level in required, the question mark will reappear and the entry will have to be repeated.

If no key is pressed for some time, the input mode will automatically be canceled and the default menu displayed.

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PMC®-R control for chain tensioner

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Some parameters are text parameters. Their values can be changed using the P [↑] key. The new parameter value will automatically be saved without having to also press the T [ENTER] key.

Operation Keyboard layout of the PMC-R

5

5.5.3 Chain Tensioner

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Fig. 6: Membrane keypad of PMC-R as chain tensioner

Tab. 2: Key functions of the PMC-R used as chain tensioner control Key symbol

Idle mode

Working mode

Input mode

No function

Extend the tensioner cylinder by hand, tension the chain

No function

No function

Retract the tensioner cylinder by hand, slacken the chain

No function

No function

Tension the chain by a defined tensioning distance

No function

No function

Slacken the chain by a defined distance

No function

No function

Backflush the tensionable drive frame manually

No function

Continue automatic with keys F and U

No function

No function

No function

No function

No function

Self selection

No function

No function

Self selection

No function

No function

Switch to menu lines in direction of arrow

Switch to menu lines in direction of arrow

Cancel last digit entered

Switch to previous menu lines

Scroll up to previous auxiliary function

Switch to previous menu lines

Switch to next menu lines

Switch to next menu lines

Switch to next menu lines

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Operation Keyboard layout of the PMC-R

Key symbol

Idle mode

Working mode

Input mode

No function

No function

Selection of function shown on the display

Show last menu item displayed

No function

Selection of function shown on the display

Switch to menu lines in direction of arrow

Switch to menu lines in direction of arrow

Switch to menu lines in direction of arrow

Stops the automatic functions

No function

No function

Direct selection of program version

No function

Input confirmation

Continue automatic with keys F and U

No function

No function

Change language

No function

No function

No function

No function

No function

No function

No function

Enter numeral 0

Selection of pretensioning operation and pretensioning menu

No function

Enter numeral 1

Direct selection of service menu

No function

Enter numeral 2

Direct selection of standard display

No function

Enter numeral 3

Direct selection of conveyor spray

No function

Enter numeral 4

No function

No function

Enter numeral 5

Direct selection of automatic pressure control menu

No function

Enter numeral 6

Direct selection of measured values menu

No function

Enter numeral 7

Direct selection of automatic types No function menu

Enter numeral 8

Direct selection of error messages and error menu

Enter numeral 9

No function

5.5.4 LED indicators of the buttons In addition to the display text, the signal or fault status is signaled by the LEDs of the buttons.

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PMC®-R control for chain tensioner

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5

Operation Standard display

5

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Tab. 3: LED indicators of the buttons Key

LED status

Meaning

3

On

Conveyor running.

Off

Conveyor stationary.

Flashing

Communication interrupted or defective communication cable.

6

On

Pre-tension the conveyor

9

Off

No error message present.

Flashing

Error message present.

A

On

Tensioner cylinder is extended.

B

On

Tensioner cylinder is retracted.

E

On

Water spraying system active.

F

Off

Automatic mode of chain tensioner inactive.

Flashing

Automatic mode of chain tensioner active.

5.6 Standard display Fig. 7: Display 1

3

4

XXXX XXXX

XXXX XXXX

XXXX X XX

5

6

7

8 9

No.

Display

1

Automatic function type

2

3

4

PMC®-R control for chain tensioner

2

XXXX XXXX

Meaning

""

Automatic function not active.

PRE

Pre-tensioning cycle is active.

PRS

Pressure holding mode is active.

Number

Mean pressure in tensioner cylinder [bar].

-1

Pressure sensor defective or not available.

Number

Tensioner cylinder stroke [mm]

-1

Reed rod defective or not available.

Status message (error or cancel). >ES<

The EMERGENCY STOP switch was pressed.

>LC<

The shield locking switch was pressed.

>SD<

The solenoid driver module has reported an error or is not available.

""

No messages.

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Operation Manual control of the system

No.

Display

Meaning

5

Status of the activated automatic function.

ID

Automatic function not active (IDLE).

ST

The automatic function is activated and is waiting for the conveyor to start up (start signal).

WA

The automatic function is in waiting status.

The control can wait for a period of time or for a certain condition to be met.

ME

The automatic function is in its measuring loop.

<>

The automatic function is currently extending the tensioner cylinders.

><

The automatic function is currently retracting the tensioner cylinders.

ERR

Invalid status value.

||

This symbol is currently not used.

6

Number

Target pressure - During control: Calculated target pressure - During pre-tensioning: "P_pretension" or "P_RevPreten".

7

Number

Motor current transmitted by the PMC-D [%].

8

Conveyor direction of travel.

9

f

The conveyor is traveling forward.

r

The conveyor is traveling in reverse.

Conveyor operating mode.

P

The pre-tensioning signal has arrived from the PMC-D, the cylinder is (or is being) pre-tensioned. The automatic sequence is waiting for the run signal from the conveyor.

o

The conveyor is running. The automatic sequence is active and is attempting to maintain the target pressure.

-

The conveyor is stationary.

ER

Error in the command telegram.

#

Fault in the serial connection to the PMC-D. Line fault.

5.7 Manual control of the system The functions described here give the user full manual control over the tensioning system. The manual functions are designed as what is referred to as dead man's control, which means the corresponding valves are activated only as long as the corresponding key is pressed. The valve is switched off when the key is released.

It is only possible to use the manual functions if no automatic sequence is activated. This is because the automatic sequence would override the control procedures undertaken manually.

To enable use of manual and semiautomatic functions, it is first necessary to press the H or I key.

This procedure (defined actuation of two keys in order to perform one function) is intended to ensure that no inadvertent movements of the tensionable drive frame can be triggered.

If the LEDs in the F, G, H and I flash, it is possible to extend the tensioner cylinders manually by pressing and holding the A key (as long as the key is pressed).

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5

Operation The automatic functions

5

The left numeric display value represents the average value of the cylinder pressure [bar]. The right value corresponds to the extension length of the cylinders [mm].

Pressing the B key retracts the tensioner cylinders manually. The meaning of the numeric values is the same as that during extension.

The display returns to the default menu after a short time if no key is pressed after executing the manual function.

5.8 The automatic functions The global function sequence for automatic mode is normally performed in the following sequence: 1. Pre-tensioning cycle before conveyor startup.

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2. Automatic control of the chain tension during conveyor operation.

3. Performing the preselected shut-off function when shutting down the conveyor.

The automatic sequence is based on measuring and controlling the absolute pressure in the tensioner cylinders, which is proportional to the chain force. At least one pressure sensor needs to be installed for measuring the tensioner cylinder pressure and one reed rod for the cylinder travel.

5.8.1 Releasing automatic mode If the control is supplied with electrical power and the automatic sequence is enabled, the program waits until the pre-tensioning command or startup signal is given, before the control function is activated.

The user can detect that the automatic sequence is "live" by the status of the LED in the F key. The LED flashes if the automatic function is active or ready to start up. Otherwise, it remains off.

If a fault occurs which causes the automatic sequence to switch itself off, it will have to be re-enabled by the user (after the fault has been rectified). This can be done either by serial remote data communication or by the key inputs described below.

The activation key F is used for local enabling of the preset automatic mode. After the key has been pressed, the display shows the following text: "<Push START key>".

As long as this text is displayed, the automatic sequence can be enabled by pressing the "Start" key [U]. The "Starting program" display now appears until the "mastertime" has elapsed. No cylinder movements occur during this time.

After the "mastertime" has elapsed, the automatic sequence is enabled.

If a fault is detected during the activation phase then the automatic sequence is not enabled and the red signal lamp starts to flash. The defined fault is shown on the display (instead of the standard display) and stored in the program. The stored error messages can be called up and deleted in the "ERROR MESSAGES" menu column.

The usual way to deactivate an automatic sequence is to press the "Stop" key.

After this key is pressed, the automatic sequence and LED are switched off using the F key

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Operation The automatic functions

5.8.2 Interrupting and switching off the automatic functions There are three possibilities, each with a different result, for interrupting and blocking automatic actions, or blocking all valve functions: Pressing the "Stop" key.

Pressing the black pushbutton (local lock-out switch) on the PMC-R. Pressing the red pushbutton (EMERGENCY STOP switch) on the PMC-R.

Function of the "Stop" key While the automatic sequence is activated, the “Stop” key can be used for canceling the action that is currently being performed, and for switching off the automatic sequence. The valves are shut off by the program and conveyor enable is canceled.

While numeric entry mode is active, this key can be used for canceling the entry and leaving the former parameter value unchanged.

In any other case, pressing the "Stop" key switches off the valves and the display reverts to the standard display after a short time. Manual or semiautomatic functions are canceled.

The function of the local lock-out switch If the local lock-out switch (black pushbutton in the bottom right-hand corner of the keypad) is pressed, all automatic functions are suspended. The solenoid driver module is deenergized, the conveyor enable signal is switched off and the display shows the following text: ">LC<".

If the switch is revoked then the automatic sequence is reactivated automatically – if it had been activated previously – and it waits for the next conveyor startup or activates the control function immediately if the conveyor was still running or had already restarted.

Function of the EMERGENCY STOP switch The EMERGENCY STOP switch (red pushbutton in the upper right-hand corner of the keypad) switches off all control and keypad functions. The solenoid driver module is deenergized, the conveyor enable signal is switched off and the display shows the following text: ">ES<".

The automatic system is not restarted when the switch is enabled again. The automatic sequence must be restarted by remote data communication or by pressing the F and "Start" keys.

WARNING Unwanted movements of the tensionable drive frame.

Only the EMERGENCY STOP switch and the lock-out switch are allowed to be used as a reliable means of preventing restart, because this also deenergizes the solenoid driver module in addition to canceling all automatic functions.

5.8.3 Automatic startup (pre-tensioning cycle) The following pre-tensioning cycle is activated before the automatic control starts:

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The automatic sequence can be restarted by remote data communication or by pressing the F and U keys.

Operation The automatic functions

5

1. The conveyor is not running and "-" is displayed. The control is inactive and waiting for the pre-tension command. When this is received, the cycle is continued from (2).

2. "PRE" is displayed and the control compares the measured cylinder pressure with the value specified by the “P_pretension” parameter in the "PRETENSION PARAMETER" menu: If the cylinder pressure is below the value of the "P_pretension", then the tensionable drive frame is extended until

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– the cylinder pressure is greater than/equal to the "P_pretension" and the minimum pre-tensioning distance ("S_pre-extend") has been reached. The cycle then continues from (3).

– the time parameter "Valvetime" elapses without "P_pretension" having been reached.

This can be caused by a mechanical, hydraulic or electrical malfunction.

However, it is also possible that the "Valvetime" was selected too short.

The automatic sequence is switched off, the conveyor enable signal remains switched off, the "startup pressure" error message is displayed, a corresponding error message is stored and the signal lamp starts to flash.

– the "Conveyor off" signal is received. This means the startup procedure was stopped. The current action is canceled and the cycle starts again at (1).

If the pressure is greater than or equal to the "P_pretension", then the cycle is continued from (3).

3. The PMC-R gives the conveyor release signal, but continues to apply tension until either the "S_pre-extend" has been traversed or the "Valvetime" has elapsed.

The PMC-R waits until the conveyor has started and the ”Conveyor running” signal is received. "o" is displayed and the cycle is continued from (4). the time parameter “Starttime” elapses. A corresponding error message is then stored and the cycle (3) is continued. the "Conveyor off" signal is received. This means the startup procedure was stopped. The conveyor enable signal is reset and the cycle starts again at (1).

4. The control function is activated once the "Delaytime" time parameter has elapsed.

Three additional parameters in the PRETENSION PARAMETER menu can influence the startup sequence: ”Ignore press.”

If the parameter is set to "ON", the control ignores any faulty pressure sensor during the pre-tensioning procedure and tensions until the "Valvetime" timer elaspses or the tensioner cylinder is extended fully ("Max. stroke").

Following this, the pre-tensioning cycle is continued as if the pre-tension pressure had been achieved. ”Skip prestart”

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Operation The automatic functions

If the parameter is set to "ON", then the pre-tensioning cycle is not performed. When the ”Conveyor running” signal is received, the automatic sequence starts immediately after the "Delaytime" time parameter elapses.

If the parameter is set to "ON", then the conveyor enable signal is permanently switched on - as long as the automatic sequence is enabled and has not been switched off due to a fault. This switched-on signal indicates that the automatic sequence is ready to start at any time. ”Start after Tout.”

If this parameter is set to "ON", the pre-tensioning command is not needed to trigger initiation of the automatic sequence.

5.8.4 The automatic pressure holding function Once the pre-tensioning procedure has finished, the actual automatic sequence for controlling the chain pre-tension is started.

During automatic pressure holding, the absolute pressure in the tensioner cylinder, which is proportional to the chain force, and the conveyor load (motor current) are measured. The target pressure is calculated from parameters "P_hold 0" to "P_hold 3" and "I_Switch0" to "I_Switch3" in the "PRES.AUTO PARAMs" menu. The tensioner cylinder is retracted or extended until the measured pressure corresponds to the target pressure.

For effective control, the chain tensioner must receive information about the conditions on the conveyor from a higher-level control system. To achieve this, the chain tensioner is linked to a gearbox control system (PMC-D) via a serial interface. The gearbox control system can now operate the chain tensioner through control commands and also affect control with the aid of process values. The current values of the face conveyor are sent to the chain tensioner for this purpose.

The chain force is represented by the current consumption of the conveyor motors. An empty conveyor draws only little current, since it essentially only needs to overcome the weight of its chain and the resulting frictional forces. A fully loaded conveyor has a high current draw, since the debris must also be moved.

The parameters "I_Switch0" (empty conveyor), "I_Switch1" (normal load), "I_Switch2" (full conveyor) and "I_Switch3" (overload) and the associated pressure values "P_hold 0", "P_hold 1", "P_hold 2" and "P_hold 3" divide the current range in 5 lines, which can have different slopes. The associated target pressure is calculated from the transmitted value of the current.

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Calculating the target pressure

Operation

5

The automatic functions

The values of the motor current are shown in percent of the nominal motor current.

Fig. 8: Example of target pressure calculation Pressure [bar] I_Switch1 I_Switch0

I_Switch3 I_Switch2

P_hold 3

P_hold 2 Target pressure P_hold 1

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P_hold 0

Motor current [%]

Measured motor current

If the momentary motor current is outside the control range set in the parameters (i.e. it drops below "I_Switch0" or rises above "I_Switch3" then the automatic sequence prevents the tensioner cylinder from retracting until the current value is once again within the valid range. This is intended to prevent a sudden pressure increase in the cylinder from supporting the formation of a slack chain, because a sudden pressure increase in the tensioner cylinder would result in the actual pressure being reduced to the target pressure (retract cylinder).

If the actual pressure leaves the pressure range specified by the hysteresis parameters and the target pressure, the control function attempts to return to the target pressure.

In order for this automatic sequence to be performed, it is basically only necessary for one pressure sensor to be installed for measuring the tensioner cylinder pressure. As a rule, however, a reed rod is also installed in order to obtain an overview of the control range of the tensioner cylinder. By this means, it is possible to tell whether the tensionable drive frame can still be moved. If the reed rod signals that the tensioner cylinder is working predominantly in the end areas, then the chain can be shortened or lengthened in order to return to an optimum working range.

Correct operation of the chain tensioning system can only be ensured, however, if it is certain that there is no external pressure acting on the tensionable drive frame (e.g. by a pile-up of material or digging into the floor). The tensionable drive frame should remain movable over the entire length of the cylinder travel.

The automatic pressure holding sequence 1. The control waits for the "Delaytime" time parameter to elapse, and then continues the cycle from (2).

2. The control continuously monitors the pressure in the tensioner cylinders and carries out the following comparisons: If the pressure is less than the lower hysteresis range (target pressure "P_lo_hyster.”), the tensioning measurement is started and the cycle is continued from (3).

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5

Operation The semi-automatic function

If the pressure is greater than the upper hysteresis range (target pressure + "P_hyster."), then the slackening time measurement is started and the cycle is continued from (4).

If neither of the above comparisons applies, and the pressure is thus still within the defined hysteresis range, then the control function remains in loop (2).

3. The cylinders are extended until the distance covered is greater than/equal to "Min.ext.str.". Then, the cycle is continued from (2) after a brief retraction of the cylinders (clearing). the time parameter “T_Extend” elapses. Then the cycle is continued from (2) after the time parameter "T_Wait" has elapsed.

4. The cylinders are retracted until

If a conveyor signal / pressure sensor error occurs during the automatic sequence, a corresponding error message is displayed and stored. The automatric function is disabled is so parameterized, and the conveyor release signal is reset. If the cylinder end stop ("Min. stroke", "Max. stroke") is reached during the run time of the automatic sequence, the setting procedure is deactivated and a corresponding warning message is stored. Here, too, it is possible for the system to be switched off by means of the parameter setting. If no switch-off takes place, the control function is inactive until there is a cylinder pressure change in the opposite direction.

Chain tensioner as standalone unit If a data connection between the chain tensioner and the PMC-D on the conveyor is not available due to failure of other components, the chain tensioner operates as a standalone unit. In this case, the control attempts to maintain the calculated target pressure derived from the parameters "P_hold 0" and "P_hold 3" alone.

5.9 The semi-automatic function The chain tensioning system features two sem-automatic sequences: "Extend 25 mm" and "Retract 25 mm". In these functions, the tensioner cylinder is moved 25 mm and the current values of pressure and cylinder stroke as displayed. In addition, a quotient of pressure and change in cylinder stroke is displayed. The value indicates whether the chain tensioner is operating in a normal range.

DPDS = ΔP/Δs*100 ΔP = Pressure change [bar] Δs = Change in cylinder stroke [mm] Information shown in the 1st display line of the default display: Extend: <-> Mean pressure value > Cylinder stroke: DPDS Retract >-< Mean pressure value > Cylinder stroke: DPDS

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the time parameter “retract timeout” elapses. Then the cycle is continued from (2) after the time parameter "T_Wait" has elapsed.

Operation

5

Backup sensors

Example for retraction: >-<

80>380:

34

DPDS

Meaning

< 100%

Small pressure change while moving.

> 100%

Large pressure change while moving.

The semi-automatic sequences can only be initiated if the automatic sequence is not active ("ID" or switch off using the "Stop" (S) key).

The semi-automatic sequences can be initiated by means of the C (extend) or D (retract) and "Start" (U) keys.

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

5.10 Backup sensors Backup sensors allows comparison of the measured values for monitoring of the primary sensors. If one of the primary sensors fails, control can be switched to the backup sensors.

Both the primary sensors and the backup sensors are connected directly to the PMC-R. In the "PRETENSION PARAMETER" menu, you can use the parameters "reed rod" and "pressure" to select which sensors to use for calculating the target pressure.

With a parameter value of 1, the primary sensor is active and the backup sensor is passive. With a value of 2, they are reversed.

Switching to a different sensor takes place only when the conveyor is idle or the automatic sequence is not active (switched off). The sensor value of the active sensor is shown in the default display and in the MEASURED VALUES menu the sensor values are identified additionally with "activ" or "passive".

Additional messages that display only the active backup sensors are available in the “VChainTensioner” visualization software: "CTSPRE: SECONDARY_PRESSURE_SENSOR" "CTSPRE: SECONDARY_REED_ROD" If the passive sensor is faulty, this has no effect on the automatic sequence, i.e. the automatic sequence is not deactivated.

The primary sensor and the backup sensor are monitored (if both are intact) by being compared to one another and checked for a possible absolute difference.

The allowed difference can be specified by means of parameter "Max Pos. Diff." for the stroke and "Max Press. Diff." for the pressure. If this difference between the active and passive sensor is reached or exceeded, the "VChain Tensioner" visualization software displays the following message, but the automatic sequence is not deactivated: "max. press. diff. exceeded" or "max. pos. diff. exceeded".

Once the difference drops below the message-generating value, the message disappears.

You can deactivate monitoring by setting the value of parameter "Max Pos. Diff." or "Max Press. Diff." to 0.

5.11 Reverse mode When the conveyor is running in reverse (opposite the conveying direction), the conveyor chain is also tensioned.

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5

Operation Conveyor shutdown

DANGER Life-threatening hazard from flying parts.

Persons, system parts and tools may not be transported with the conveyor.

Otherwise, you and other persons could be seriously injured or even killed.

The conveyor may only run in reverse when it is empty.

The direction is changed using the PMC-D drive control. Before changing direction, you need to stop the conveyor using the PMC-V and select an operating mode for reverse. The PMC-D on the tail gate commands a change in direction from the PLC. The PLC tells the PMC-D that the direction has been changed.

The PMC-D sends this message to the PMC-R. The PMC-R then exchanges the parameters for the tensioning procedure and the automatic pressure retaining function in forward with parameters for the tensioning procedure in reverse and reports this to the PMC-D. The following table lists the parameters which the PMC-R exchanges for the change in direction: Tab. 4: Parameters used for forward and reverse operation Parameter group

Forward

Reverse

PRETENSION PARAMETER

P_pretension

P_RevPreten

PRES.AUTO PARAMs

P_hold 0

P_Rev_hold 0

P_hold 1

P_Rev_hold 1

P_hold 2

P_Rev_hold 2

P_hold 3

P_Rev_hold 3

I_Switch0

I_Rev.Switch0

I_Switch1

I_Rev.Switch1

I_Switch2

I_Rev.Switch2

I_Switch3

I_Rev.Switch3

5.12 Conveyor shutdown If the conveyor is switched off and the ”Conveyor stationary” signal is received then any setting procedures are immediately canceled and the control waits for a new starting procedure.

5.13 Backflushing the tensionable drive frame (optional) In order to ensure that the tensionable drive frame remains able to move during operation, the tensionable drive frame can be equipped with nozzles which are responsible for backflushing. Backflushing is intended to remove coal dust from the frame, since otherwise its mobility may be restricted.

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The pretensioning cycle and automatic pressure holding function in reverse corresponds to forward mode (see above).

Operation Loading the program

5

5.13.1 Manual backflushing Manual backflushing of the tensionable drive frame on the tail gate is possible at any time. To prevent unintentional opening of the backflushing valves, backflushing is performed like a deadman function using the key combination H or I and then the E or P key.

5.13.2 Automatic backflushing If cyclical backflushing is enabled ("Water flush") and the conveyor's run signal is present, the tensionable drive frame is backflushed regularly during automatic operation ("T_Wdelay").

5.14 Loading the program Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

To load the program, at least the following hardware is required: 1 PMC-R 1 power supply or, alternatively, a plug-in power supply with 12 V DC and SKK24 connectors 1 loading cable PC or laptop Fig. 9: Connection diagram for loading the program

PMC®-R control for chain tensioner

1

PMC-R

5

Alternative connection for power supply

2

Power Supply

6

Loading cable

3

Alternative plug-in power supply

7

PC or laptop

4

SKK24 cable

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5

Operation Loading the program

Starting loading A loading program is required to load the PMC-R program into the PMC-R. This program has the name “bootpmc.exe” and is only available with an English program interface. After the program is started by double-clicking on it, a window will appear in which you have to click on the "COM" communication channel used.

If the wrong port is selected and confirmed with the "OK" key, the “bootpmc.exe" window will appear with the error message “Port:comX is not available!!" (connection of comX to X1...6 is not available).

Fig. 11: "bootpmc" window (error message)

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Fig. 10: "Setup COM Port" window

Operation Loading the program

5

If the correct port is selected, the boot program will start.

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Fig. 12: Boot program window

1

deletes the existing PMC-R program

2

displays the program found on the PC

3

progress display

4

information about the connected PMCRs

5

starts loading the program found

6

status window

7

displays the type of connection to the PMC-R ("OFF LINE": no connection, "PMC BOOTER": connected to the booter)

Important information A data connection can be established only immediately (approx. 10 s) after the start of the PMC-R (power supply switched on), or to a PMC-R without a loaded program or to a server PMC-R.

If the data connection is OK, the program must be first deleted from the PMC-R connected using the "Erase Application" button (1).

Display of the PMC-R: 0<F

1

A>0

No Prg.: WAITING

Next, the "Start Transmission" button must be actuated.

The PMC-R display shows the loading progress with the rising number of uploaded data packages. For better readability, the display is only refreshed every two seconds, which makes the display appear to jump.

0<F

1

A>0

Receive 7194 0

After the loading operation, the connection status on the PC window indicates OFF LINE again and the PMC-R runs through a few start and initialization steps. Once these are completed, the PMC-R switches to the default window.

Default display This is displayed if:

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5

Operation Loading the program

No numbering has taken place on the network yet, An unexpected coding plug is found, An expected coding plug is not found.

---- * ---- * ---- * ---Wrong Type

If no sensors are connected, ~~~ will be displayed instead of measurements If no neighboring shield is present, the display will flash.

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">SD<" will be displayed if no solenoid driver module is connected.

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PMC®-R control for chain tensioner

Technical data

6

PMC-R

6 Technical data 6.1 PMC-R The built-in battery makes it possible for parameter values to be stored even if there is an interruption in the power supply. If the battery is flat, the default settings are used for the PMC-R in question after a restart, until the PMC-Rs are automatically synchronized at the face. There are no safety-relevant consequences.

The service life of the battery is normally more than 4 years. The battery must be changed by service personnel.

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Fig. 13: Front side of the PMC-R

6.1.1 Design suitable for mining The PMC-R control unit has a housing made of stainless steel, which is hermetically sealed due to its design. The PMC-R housing is produced without seams but with a flange on which the keyboard circuit board is mounted. Furthermore, it contains the EMERGENCY STOP and support lock-out unit. An O-ring seal under each flange ensures that the joints are waterproof (24 hours at a water depth of 1 m). The connector side for the connection between the I/O unit and electronic accessories is secured three times with an O-ring. The robust housing unit provides additional protection against external influences and a long service life with low maintenance.

6.1.2 EMERGENCY STOP / support lock-out switches EMERGENCY STOP switch Shield locking switch

The EMERGENCY STOP and support lock-out switches are for protection against undesired shield movements in an emergency or during repairs.

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6

Technical data PMC-R

DANGER Valve functions despite EMERGENCY STOP Operating the EMERGENCY STOP or shield locking switch interrupts supply of electric power to the solenoid driver. Actuation by operating the valves hydraulically is however still possible, but can cause severe injury.

design

The PMC-R EMERGENCY STOP and support lock-out switches are triggered by two switches. These switches have a waterproof design due to the use of a special switching rod and a sealing groove for an O-ring. The separate switching element for the EMERGENCY STOP and support lock-out switches contains no components other that the switch contacts and the wiring for the beeper. The range of functions is hardware-based for the device itself. If other devices are connected via a PMC-R chain, the range of functions there is software-controlled.

6.1.3 Rear side of the PMC-R Fig. 14: Rear side of the PMC-R

1

Guide pin for brass retaining strip

2

Compression springs for support during disassembly

3

Holes for mounting bolt M12X140

Port assignment of the PMC-R The port assignment can be found in the original drawings for the project.

6.1.4 Pin assignment of the PMC-R plug-type connections The following table lists the possible pin assignment configurations for the hardware. They are determined by the programming adapted to the application.

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1. Never operate the valves hydraulically if the shield locking or EMERGENCY STOP switch has been operated!

Technical data

6

PMC-R Tab. 5: Pin assignment of the SKK24 connections of the PMC-R A2

W2

C2

D2

E2

F2

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

TX

SGND

TX

SGND

TX

SGND

TX

SGND

TX

VGND

TX

VGND

Namur+

VGND

VGND

Namur+ Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

RX

12 V

RX

12 V

RX

12 V

RX

12 V

RX

12 V

RX

12 V

0-1 mA 0.5 - 4.5 V

0-1 mA 0.5 - 4.5 V

0-1 mA 0.5 - 4.5 V

Namur-

Namur-

0.5-4.5 V 0-1 mA 0 -20 mA

0.5-4.5 V 0-1 mA

A1

W1

C1

D1

E1

F1

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

BIDI interface

BIDI interface

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

Pin 3

Pin 4

RX

GND

TX

SGND

TX

SGND

TX

SGND

TX

VGND

TX

GND

Namur+

VGND Namur+

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

Pin 2

Pin 1

TX

12 V

RX

12 V

RX

12 V

RX

12 V

RX

12 V

RX

12 V

0-1 mA 0.5 - 4.5 V

PMC®-R control for chain tensioner

0-1 mA 0.5 - 4.5 V

Namur-

Namur-

0.5-4.5 V 0-1 mA 0 -20 mA

0.5-4.5 V 0-1 mA

GND

Ground

SGND

Switched GND for sensors/external devices

VGND

Switched GND for valve control

Namur+

Supply for Namur sensor

Namur-

Input on Namur sensor

RX

Receive serial communication

TX

Send serial communication

0 - 20 mA

Current input

0 - 1 mA

Current input (0.2 - 1 mA)

A1, F1

Power supply

A2, D1, D2

200 mA, group can be deactivated via pin 1

B1,B2, C1, C2

60 mA

E1, E2, F2

1000 mA, group can be deactivated via pin 1, the voltage is additionally switched off with EMERGENCY STOP and/or support lock-out switch

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6

Technical data PMC-R

6.1.5 Brass retaining strip A panel is fastened to the unit using M12X140 Allen screws to protect the PMCR's SKK24 ports from damage during transit. They are also used to fasten the brass retaining strip during operation.

1

Recess to apply a tool if the panel has to 2 be pried off when dismantling (be careful - the panel must be removed without tilting it to avoid damage to the PMC-R plug-type connections.)

Threaded hole for attaching with Allen screw M12X140

3

Hole for guide pin of the PMC-R

4

Countersunk hole for mounting and guiding the compression springs of the PMCR

5

Retaining sleeve with guide pin for SKK24 connector

6

Holes for fastening the brass retaining strip in the shield (on the holding sheet, among other things)

7

Holes for retaining clips, long

The connections required according to the drawings are plugged into the corresponding ports of the PMC-R and secured with long staples (P/N 531-4855). If a PMC-R needs to be replaced, the two Allen screws (M12 x 140) are loosened and the PMC-R is removed. The SKK24 connectors in the neighboring connections and the sensor connections remain positioned in the brass retaining strip, so that the PMC-R control can be pushed back on directly and screwed in place.

6.1.6 Identification Tab. 6: Identification of the PMC-R:

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Object:

Control unit

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Description:

PMC-R

Purpose:

Control unit in an electrohydraulic control system

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Fig. 15: Brass retaining strip

Technical data

6

Solenoid driver module

Type:

PMC-R/2

Type of protection:

I M2 Ex ib I Mb

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

INERIS 03 ATEX 016

Ambient temperature:

Ta = -20°C to +60°C

Type of protection: Ex ib I Mb in acc. with: EN 60079-0: 2012 General regulations

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

EN 60079-11: 2012 Intrinsic safety "i"

6.2 Solenoid driver module The solenoid driver module can switch up to 22 valves. A four-wire cable connects the solenoid driver module to the PMC device. A switching circuit in the solenoid driver module controls the data flow between the switching circuits and the PMC device and determines the validity of the values or indicates a defect.

The solenoid driver module is completely covered by a 2-component resin cast.

Three LEDs under the port "K" continuously indicate the function of the solenoid driver module and provide the following information: Green LED: 12 V applied Yellow LED indicates correct data flow Red LED indicates an error in the data flow between the PMC device and the solenoid driver module.

Fig. 16: Solenoid driver module

A

1/2

C

5/6 3/4

E

F

15/16

9/10 7/8

B

H

11/12

D

X = Connection to PMC device

13/14

X

Y

19/20

17/18

G

21/22

I

K LED

In addition to the connection for the PMC device, there are two further groups of connections on the solenoid driver module. All connections are suitable for controlling double solenoid valves. The connections G - K permit sensor data to be read in.

Important information Crossover required The connecting cables between the solenoid driver module and the sensors must have a crossover; they must not be connected through 1:1 (see original drawings and parts lists!)

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6

Technical data Coding plug

Pin assignments of solenoid driver module (See "Project-Specific Documentation") Tab. 7: Identification of the solenoid driver module: Object:

Valve/sensor logic

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Description:

PMC/SD2

Purpose:

Intrinsically safe activation of valves and sensors

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Type:

PMC-SD2-OS4 ATEX

Type of protection: Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

INERIS 02 ATEX 0028 X

Ambient temperature:

Ta = -20°C to +70°C

Type of protection: Ex ib I MB in accordance with: EN 60079-0: 2012: General regulations EN 60079-11: 2012: Intrinsic safety "i"

Function The valve/sensor logic unit is used for activating valves and sensors within a higher-level and intrinsically safe control system. Furthermore, valve and sensor signals are passed on to the control system. The exact operating modes and functions are specified in the control system.

6.3 Coding plug The coding plug must be programmed according to the intended task of the PMC-R before it is used.

Every PMC-R requires a coding plug. Only the PMC-R devices for face control of the project-specific standard shield d not need a coding plug.

Fig. 17: PMC intelligent coding plug

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PMC®-R control for chain tensioner

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I M2 Ex ib I Mb

Technical data

6

Cables Tab. 8: Identification of the intelligent coding plug: Object:

Coding plug

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Description:

PMC Code Plug

Purpose:

Programmable coding plug

Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Type:

PMC Code Plug

Type of protection:

I M2 Ex ia I

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

INERIS 06 ATEX 0055 X

Ambient temperature:

Ta = -20°C to +70°C

Type of protection: Ex ia I in accordance with: EN 60079-0: 2012 General Regulations EN 60079-11: 2012 Intrinsic safety “i“

Function: The coding plug is used for software identification and coding on control units.

Tab. 9: Function of the control unit using the code plug Number

Function

231

Rear AFC Chain Tensioner

232

Front AFC Chain Tensioner

269

Level 4 hardware key for parameter settings

Tab. 10: Parameters Supply voltage max.

DC 13.2 V

Power supply max.

2A

Maximum input capacitance

Ci = 240 nF with 206R in series

Maximum input inductance

Li = 0

6.4 Cables 6.4.1 Cable types Four-wire lines with SKK24 or OS-4 connectors are used in the standard case for the PMC-R system. Lines with other numbers of wires or other connector types are available for specific tasks.

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6

Technical data Cables

Valve cables Normally, protected cables are used for short connections not exposed to increased mechanical hazards. This is usually the case, for example, for the connection between the PMC-R, solenoid driver module and valves.

Hose cables Hose cables are used for connections from shield to shield and for connections subjected to mechanical hazards within the shield. A staple clamp prevents the hose cable with SKK24 plug-type connections illustrated below from being pulled out.

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Fig. 18: Steel-armored hose cable with SKK24 connectors

Steel-armored hose

SKK24 connector rotatable 355 °

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PMC®-R control for chain tensioner

Technical data

6

Cables

6.4.2 Connector types

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Fig. 19: Hose cable with various ends

1 Fastening device for talember

2 Cable end with Hirschmann plug

3 Cable part in the protective hose

4 Cable end with OS-4 connector

5 Cable end with SKK24 plug with PG9 screw joint

6 Open cable end

7 Cable end with Lumberg socket

6.4.3 Pin assignments Fig. 20: Sockets and connectors with pin numbers

Socket

Connector

OS-4

SKK24

Hirschmann

Tab. 11: Pin assignments of the cables Pin

PMC®-R control for chain tensioner

Core colors

Pin assignments of the cables for connection between PMC-R system components

Solenoid driver module and valves

1 white

+12 volt

+12 V

2 brown

data

Electro-valve 1 GND

3 green

data

Electro-valve 2 GND

4 yellow

ground (GND)

unused

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6

Technical data Cables

Cables with a different pin assignments are identified by colored shrink-fit hoses at the turned end.

6.4.4 SKK plug connectors The plug connectors consist of a socket and a plug section, and are used as electrical connections in intrinsically safe electrical circuits. Depending on their type, they provide reliable electrical isolation for up to four different, intrinsically safe electrical circuits, with total peak voltage values of 60 V. The installation of the plug connectors as well as the lines used must be documented with a separate certificate.

Manufacturer:

Name and address of the manufacturer

Type:

SKK*****

Type of protection:

I M2 EEx ia I

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

DMT 02 ATEX E 050 U

Type of protection: EEx ia I in accordance with: EN 60079-0: 2012 General regulations EN 60079-11: 2012 Intrinsic safety "i"

Parameters The parameters are specified in the component certification of the couplers. The component certification is a component of the complete user information.

6.4.5 Loading cable To load a program into the PMC-R, you need to connect the PMC-R to a computer by means of a loading cable.

Fig. 21: Loading cable

1 DSUB serial connection for PC 2 SKK24 port for PMC-R device (port C1) Tab. 12: Pin assignments of the loading cable:

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Pin DSUB 9

Pin assignments

Wire color

PIN SKK24

-

+12 V

White

1

2

Data

Brown

2

PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Identification:

Technical data

6

Optocoupler PMC II2 BIDI coupler

Pin DSUB 9

Pin assignments

Wire color

PIN SKK24

3

Data

Green

3

5

Ground (GND)

Yellow

4

6.5 Optocoupler PMC II2 BIDI coupler The PMC II2 BIDI coupler (optocoupler IA) is required for electrical isolation of two adjacent electrical circuits. An optical connection allows data to be transferred from one electrical circuit to the other, while the two electrical circuits remain separated from one another.

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Fig. 22: Optocoupler PMC II2 BIDI coupler

1

SKK24 connection (marked in red for connection of the A1 port of the PMC-R)

2

Hole for attaching the BIDI coupler

3

Hole for the SKK24 mounting brackets

Fig. 23: Example for assembly

A1

red

F1

The SKK24 socket marked in red must be connected to the PMC-R A1 port.

The PMC-R network can only function if the red SKK24 socket is connected to the PMC-R A1 port.

Identification: Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Type:

PMC-II2

Type of protection:

I M2 EEx ib I

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

BVS 05 ATEX E 006

EEx ib I in acc. with: EN 60079-0: 2012, General regulations

PMC®-R control for chain tensioner

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6

Technical data Sensors

EN 60079-11: 2012 Intrinsic safety "i"

6.6 Sensors Various sensors are available for utilizing all possibilities of the PMC control.

For instance, there are analog sensors for measuring the pressure and forward movement.

6.6.1 Pressure sensor IPS 600

The measuring range of the sensor is 0 to 600 bar. A measurement voltage of 0.5 to 4.5 V is generated. The hydraulic side of the pressure sensor (connector DN10) is connected directly to the measuring body of the sensor. The electrical side has an SKK24 socket for the electrical connection between the PMC device and sensor. For reasons of safety in the face of mechanical loads, these cable connections should be established with hose cables.

Fig. 24: Pressure sensor IPS 600

4 3

2

8 6

1

5

9 7

4 1 name plate, if not lasered

2 position of the lasered name plate details

3 SKK24 socket

4 holes for SKK24 clamps

5 sealing groove on the hydraulic side with O-ring

6 groove for hydraulic clamp

7 protective cap, SKK24 side

8 protective cap on the hydraulic side

9 holes for guide pins

Fig. 25: Illustration of the pressure sensor

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PMC®-R control for chain tensioner

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For pressure measurement, the sensor uses a "Wheatstone" bridge" on a ceramic membrane. A measured value amplifier is installed in the housing of the pressure sensor.

Technical data

6

Sensors

Fig. 26: Characteristic curve of the pressure sensor

Signal (V) 4.5

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0.5

0

100

200

300

400

500

600

Pressure (bar)

Supply voltage

12 V Pin 1

Output signal

0.5 - 4.5 V Pin 2

Ground

Pin 4

Power consumption

10 mA

Identification: Tab. 13: Identification of the pressure sensor type IPS Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Type:

IPS 600

Type of protection:

I M2 EEx ib I

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

DMT 03 ATEX E 008

Type of protection: EEx ib I in acc. with: EN 60079-0: 2012 General Regulations EN 60079-11 - 2012 Intrinsic safety "i"

Description and function The pressure sensor is used for converting a system pressure into a proportional electrical signal for a pressure range from 0 to 600 bar. The pressure sensor is calibrated and tested for this pressure range.

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6

Technical data Sensors

6.6.2 Reed rod The piston stroke is measured with a reed rod which is installed in the hydraulic cylinder. The measuring contacts are installed in a stainless steel tube and are actuated using a ring magnet, which is installed in the piston rod. The accuracy of measurement is approximately 4 mm.

Fig. 27: Sectional drawing (schematic diagram) of the reed rod x = 100%

x = 0% Pin 1: 12 V Pin 2: 0.5 - 4.5 V Pin 4: Ground

Electronics Reed contact

Casting compound Stainless steel tube

Fig. 28: Reed rod characteristic curve

Signal (V) 4.5

0.5

Stroke (%) 0 Supply voltage Output signal

100 12 V Pin 1 0.5 - 4.5 V Pin 2

Ground Power consumption

Pin 4 10 mA

Reed rods can be used for length measurements in other hydraulic cylinders such as stabilizing cylinders and flipper cylinders, sliding canopy cylinders, advancing mechanism cylinders or tensioner cylinders (chain tensioner). Occasionally, they are also used outside cylinders.

The plug-type connection on the reed rod is a four-pin M12 round connector. If the reed rod is installed in a hydraulic cylinder, a screw-in socket with a transition from the M12 round connector to the SKK24 socket is attached so that a cable connection can be established to the hose cable from the PMC system.

If a reed rod is used externally (outside a hydraulic cylinder), a hose cable with M12 round connector is required.

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Ring magnet

Technical data

6

Signal lamp

Identification: Tab. 14: Reed rod identification Manufacturer:

Taciak AG 59394 Nordkirchen, Kattenbeck 20

Type:

WMG *

Type of protection: Identification:

I M1 EEx ia I 0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

BVS 03 ATEX E 166X

Ambient temperature:

Ta = -30°C to +80°C

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

EEx ia I in accordance with: EN 50014-1997 A1–A2 General regulations EN 50020-2002 Intrinsic safety “i“ EN 50303: 2003 equipment group I category M1

Description and function The reed rod is used to measure stroke lengths.

By moving over the measuring rod with a ring magnet, the reed contacts inside the rod are actuated. These reed contacts switch partial voltages of a resistance chain connected as a voltage divider to a downstream amplifier, which generates an output voltage from 0.5 to 4.5 V that corresponds to the stroke. These measuring signals are forwarded to a higher order control system for processing.

Parameters Supply voltage U i DC 13.2 V Ambient temperature Ta -30°C to +80°C

6.7 Signal lamp The WL signal lamp is available in a single-channel and dual-channel (two-colored lighting areas) version for several connection types. It is used for optical hazard warnings or for the optical indication of important device statuses. With a higher-order control unit, the colored LEDs of the two-channel signal lamp can be activated separately.

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6

Technical data Signal lamp

The signal lamp can also be connected externally to the control, parallel to the jumbo diode on the control.

Tab. 15: Technical data Weight

0.45 kg

Dimensions

100 x 75 x 50 mm

Temperature range

-20°C to +70°C

Voltage

max. 13.2 V DC

Identification: Tab. 16: Identification of the signal lamp Manufacturer:

Caterpillar Global Mining Europe GmbH, 44534 Luenen, Industriestr.1

Type:

Type: WL*-1 (with Hirschmann connector) or type: WL*-2 (with OS-4 connector)

Type of protection:

I M2 EEx ib I

Identification:

0158

Serial no.:

XXXX XX XXXX 5th and 6th places correspond to the year of manufacturing

Certificate:

DMT 01 ATEX E 111

Ambient temperature:

Ta = -20°C to +70°C

Type of protection: EEx ib I in accordance with: EN 60079-0: 2012 General regulations

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PMC®-R control for chain tensioner

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Fig. 29: Signal lamp

Technical data Signal lamp

6

EN 60079-11: 2012 Intrinsic safety "i"

Function

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

The signal lamp is supplied by an intrinsically safe electrical circuit via a plug connector. The signal lamp is activated via a higher-order, intrinsically safe, certified control system. It is activated by an external control unit.

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Parameter

7

Measured values

7 Parameter Important information This chapter is bilingual.

Important information

7.1 Measured values Tab. 17: Measured values Messwerte P

#

#

#

#

Display in English

Anzeige deutsch

Meaning in English

Bedeutung deutsch

MEASURED VALUES

MESSWERTE

Headline

Überschrift

0= panpress. x z

0= Zyl.druck x z

x = Current value from pressure sensor 1 in the chain tensioner cylinder.

x = Aktueller Wert des Drucksensors 1 im Kettenspannzylinder.

z = activ: Pressure sensor 1 is used for control. z = passive: Pressure sensor 1 is used only to check pressure sensor 2.

z = aktiv: Drucksensor 1 wird zur Steuerung genutzt. z = passiv: Drucksensor 1 wird nur zur Kontrolle von Drucksensor 2 genutzt.

x = Current value from pressure sensor 2 in the chain tensioner cylinder.

x = Aktueller Wert des Drucksensors 2 im Kettenspannzylinder.

z = activ: Pressure sensor 2 is used for control. z = passive: Pressure sensor 2 is used only to check pressure sensor 1.

z = aktiv: Drucksensor 2 wird zur Steuerung genutzt. z = passiv: Drucksensor 2 wird nur zur Kontrolle von Drucksensor 1 genutzt.

Current value from stroke sensor 1 in the chain tensioner cylinder.

Aktueller Wert des Wegsensors 1 im Kettenspannzylinder.

z = activ: Stroke sensor 1 is used for control. z = passive: Stroke sensor 1 is used only to check stroke sensor 2.

z = aktiv: Wegsensor 1 wird zur Steuerung genutzt. z = passiv: Wegsensor 1 wird nur zur Kontrolle von Wegsensor 2 genutzt.

Current value from stroke sensor 2 in the chain tensioner cylinder.

Aktueller Wert des Wegsensors 2 im Kettenspannzylinder.

z = activ: Stroke sensor 2 is used for control. z = passive: Stroke sensor 2 is used only to check stroke sensor 1.

z = aktiv: Wegsensor 2 wird zur Steuerung genutzt. z = passiv: Wegsensor 2 wird nur zur Kontrolle von Wegsensor 1 genutzt.

0= panpress.2 x z

0= ramstroke x z

0= ramstroke2 x z

0= Zyl.druck2 x z

0= Schreitweg x z

0= Schreitweg2 x z

#

0=Targetpress x bar

0=Zieldruck x bar

Calculated target pressure for the chain tensioner cylinder. The pressure depends directly on the motor current drawn by the face conveyor. The display shows valid values only when automatic operation is active.

Errechneter Zieldruck für den Kettenspannzylinder. Der Druck hängt direkt vom Motorstrom des Strebförderers ab.

Die Anzeige zeigt nur bei einer aktiven Automatik gültige Werte an.

#

0=Mot.current: x

0=Motorstrom x

Mean value of the motor current [%].

The motor current is an indicator of the load on the conveyor.

Mittelwert des Motorstroms [%].

Der Motorstrom ist ein Indikator für die Last des Förderers.

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Dieses Kapitel ist zweisprachig.

Parameter

7

Error messages

P

Display in English

Anzeige deutsch

Meaning in English

Bedeutung deutsch

#

0=Conv.dir. z

0=Fördererrichtung z

Conveyor direction

Laufrichtung des Förderers.

z = forward: in the direction of the head z = vorwärts: Richtung Hauptantrieb gate z = rückwärts:Richtung Hilfsantrieb z = reverse: in the direction of the tail gate #

0=Conveyor type: z

0=Förderertyp z

The program is configured with the aid of a coding plug for a conveyor type. z = front: front conveyor z = rear: rear conveyor

#

0=flush in x min

0=Spülen in x min

Das Programm wird mittels eines Kodiersteckers für einen Förderertyp konfiguriert. z = front: Vorderer Förderer z = rear: Hinterer Förderer

Duration in minutes before the next flushing sequence is started.

Dauer in Minuten, bis der nächste Spülvorgang gestartet wird.

The line is only visible when the “T_Wdelay” parameter is set to 1.

Diese Zeile ist nur sichtbar, wenn der Parameter „T_Spwart“ auf 1 gesetzt wurde.

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7.2 Error messages All system errors (or warnings) since initialization of the application are saved in the error messages column until they are deleted manually or by re-initialization of the application. The user can delete the error message currently shown on the display by pressing the T [ENTER] key. If no errors have been saved, the text "no errors" is displayed.

In der Spalte Fehlermeldungen werden alle seit der Initialisierung der Applikation aufgetretenen Systemfehler (oder Warnungen) gespeichert, bis sie manuell oder durch Neuinitialisierung der Applikation gelöscht werden. Der Benutzer kann die momentan im Display angezeigte Fehlermeldung durch Betätigung der Taste T [ENTER] löschen. Wenn keine Fehler gespeichert sind wird der Text "keine Fehler" angezeigt.

Tab. 18: Error messages Fehlermeldungen Display in English

Anzeige deutsch

Meaning in English

Bedeutung deutsch

ERROR MESSAGES

FEHLERMELDUNGEN

Headline

Überschrift

A2 sensor error

A2 Port ?

Sensor error at port A2

Sensorfehler an Port A2

B1 sensor error

B1 Port ?

Sensor error at port B1

Sensorfehler an Port B1

The reed rod 2 in the tensioner cylinder does not provide a valid value.

Der Reedmessstab 2 im Spannzylinder liefert keinen gültigen Wert.

Sensor error at port C2

Sensorfehler an Port C2

The reed rod 1 in the tensioner cylinder does not provide a valid value.

Der Reedmessstab 1 im Spannzylinder liefert keinen gültigen Wert.

Sensor error at port D1

Sensorfehler an Port D1

The pressure transducer 2 in the tensioner cylinder does not provide a valid value.

Der Druckgeber 2 im Spannzylinder liefert keinen gültigen Wert.

Sensor error at port D2

Sensorfehler an Port D2

The pressure transducer 1 in the tensioner cylinder does not provide a valid value.

Der Druckgeber 1 im Spannzylinder liefert keinen gültigen Wert.

C2 sensor error

D1 sensor error

D2 sensor error

C2 Port ?

D1 Port ?

D2 Port ?

keyboard error

Tastatur

Keyboard error

Tastaturfehler

valve error

Ventil?

Valve read back error

Fehler beim Abrufen des Ventilzustandes

no solenoid drv.

keine Ventillst.

No solenoid driver found

Keine Ventilansteuerleiste gefunden

battery error

Batteriefehler

Battery error

Batteriefehler

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Parameter Error messages

Display in English

Meaning in English

Bedeutung deutsch

beeper defect?, check Hupe defekt?, ueberbeeper pruefen!

Beeper defective

Beeper-Warnhupe defekt

e-stop defect?, check switch

E-stop switch defective

Nothaltschalter defekt

check local parameter Lokale Parameter pruefen

Check local parameters

Lokale Parameter überprüfen

SD current limiting

VL Strombegrenzung

Excess current flowed at solenoid driver

Zu hoher Strom an der Ventilansteuerleiste geflossen

MISC: SYSTEM_STARTUP

MISC: System Startup

PMCR had made a reset. It will be displayed for 5 minutes

PMC-R hat Neustart durchgeführt, Anzeigedauer 5 min.

T_Retract

Entspannzeit

The slackening time (max. valve switching time) was exceeded during retraction of the tensioner cylinder.

Beim Einfahren des Spannzylinders wurde die Entspannzeit (max. Ventilschaltzeit) überschritten.

extend timeout

Spannzeit

The tensioning time (max. valve switching time) was exceeded during extension of the tensioner cylinder.

Beim Ausfahren des Spannzylinders wurde die Spannzeit (max. Ventilschaltzeit) überschritten.

EXT. Count overflw.

Anz. Nachspannen

The maximum number of attempts was exceeded when extending the tensioner cylinder.

Beim Ausfahren des Spannzylinders wurde die maximale Anzahl an Versuchen überschritten.

RET. Count overflw.

Anz. Entspannen

The maximum number of attempts was exceeded when retracting the tensioner cylinder.

Beim Einfahren des Spannzylinders wurde die maximale Anzahl an Versuchen überschritten.

startup pressure

Vorspanndruck

The timer has run out without the parametered pretensioning/start-up pressure having been achieved.

Der Timer ist abgelaufen, ohne dass der parametrierte Vorspanndruck erreicht wurde.

Cylinder stroke

Zylinderwegende

The limit stop was reached during a setting procedure.

Bei einem Stellvorgang wurde der Endanschlag erreicht.

Autom. Shutdown

Auto.abschaltung

The automatic sequence was shut down due to an error.

Aufgrund eines Fehlers wurde die Automatik abgeschaltet.

startup sequence

Vorspannzyklus

The pretensioning cycle was cancelled due to an error (signal time / signal logic).

Der Vorspannzyklus wurde aufgrund eines Fehlers (Signalzeit / Signallogik) abgebrochen.

Post extend cnt.

Spannversuche

Max. number of those tensioning cycles cancelled due to errors was exceeded.

Max. Anzahl der wegen Fehler abgebrochenen Spannzyklen wurde überschritten.

Post retract cnt.

Entspannversuche

Max. number of those relief cycles cancelled due to errors was exceeded.

Max. Anzahl der wegen Fehler abgebrochenen Entspannzyklen wurde überschritten.

Comm. not active

Komm. nicht aktiv

PMC-D communication faulty.

Kommunikation mit PMC-D gestört.

startup stroke

Vorspannweg

The timer has run out without the parameDer Timer ist abgelaufen, ohne dass der tered pretensioning/start-up distance having parametrierte Vorspannweg erreicht wurde. been reached.

warning cyl str.

Warnung Zyl.weg

The warning limit has been reached during a setting procedure.

Bei einem Stellvorgang wurde die Warngrenze erreicht.

Conv. Direction

Fördererrichtg.

Attempted change of direction while conveyor was running.

Es wurde ein Richtungswechsel bei laufendem Förderer versucht.

max. pos. diff. exceeded

max. Pos.diff. überschritten

Maximum difference of measured values between primary and backup reed rod exceeded.

Maximale Differenz der Messwerte zwischen Haupt- und Reserve-Reedmessstab überschritten.

max. press. diff. exceeded

max. Druckdiff. überschritten

Maximum difference of measured values between primary and backup pressure sensor exceeded.

Maximale Differenz der Messwerte zwischen Haupt- und Reservedrucksensor überschritten.

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Nothaltschalter defekt?, pruefen

PMC®-R control for chain tensioner

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7

Parameter

7

Global

7.3 Global Tab. 19: Global Global P

4

Display in English

Anzeige deutsch

GLOBAL PARAMETER

GLOBAL PARAMETER

mastertime *x

Masterzeit *x

default min

500

300

max

2000

Meaning in English

Bedeutung deutsch

Headline

Überschrift

x = available time until next keystroke

x = Verfügbare Zeit bis zum nächsten Tastendruck.

Time settings in 1/100 sec Zeiteinstellungen in 1/100 sec

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7.4 Local Tab. 20: Local Lokal P

1

Display in English

Anzeige deutsch

LOCAL VALUES

LOKALE PARAMETER

Param.in.Default *x

LocalTest *x

default min

1

0

max

Meaning in English

Bedeutung deutsch

Headline

Überschrift

1

The parameter has explicitly to be set from 1 to 0 for a new program loaded into the PMC-R for ensuring that the parameter settings have been checked.

Automatic functions are inhibited if the parameter value is not 0.

Bei einem neu in die PMC-R geladenen Programm muss der Parameter ausdrücklich von 1 auf 0 gesetzt werden.

Dadurch wird sichergestellt, dass die Parametereinstellungen geprüft wurden.

Wenn der Parameterwert nicht 0 ist, werden keine Automatikfunktionen ausgeführt.

max

Meaning in English

Bedeutung deutsch

7.5 Service Tab. 21: Service Service P

Display in English

Anzeige deutsch

SERVICE

SERVICE

Headline

Überschrift

2

boot to << >>

Prg. nach << >>

Send program to neighboring computer: << >> {in A1 direction with N key, in F1 direction with P key}

Programm zum Nachbarrechner schicken: << >> {in Richtung A1 mit Taste N, in Richtung F1 mit Taste P}

2

boot facewide (P)

Prg. booten (P)

Use key (P) to send program Programm in alle Rechner in all computers schicken mit Taste (P)

2

PMC reset (P)

PMC reset (P)

Use key (P) to reset PMC-R

PMC-R zurücksetzen mit der Taste (P)

3

destroy prog. (P)

Prg.loeschen (P)

Use key (P) to delete program in PMC-R)

Programm in der PMC-R löschen mit der Taste (P)

2

clear errors (P)

Fehler loeschen (P)

Use key (P) to delete error list

Fehlerliste löschen mit der Taste (P)

#

CTS_AFC_R z

CTS_AFC_R z

Program name and z = current program version number

Programmname und z = aktuelle Programmversionsnummer

PMC®-R control for chain tensioner

default min

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Parameter

7 P

Display in English

Anzeige deutsch

default min

max

Meaning in English

Bedeutung deutsch

0

Cal.Beeper z (P)

Cal.Beeper z (P)

0

0

2

Use key (P) to calibrate beeper z = {0,1,2} internal shield index in the adjacent shields without controls computers; shield index (z) can be selected with N key

Beeper kalibrieren mit der Taste (P) z = {0,1,2} interner Schildindex in den Nzu1-Rechnern Schildindex (z) wählbar mit Taste N

4

L1 Password *x

L1 Passwort *x

xxxx

0

9999

Current level 1 password

Aktuelles Level 1 Passwort

4

L2 Password *x

L2 Passwort *x

xxxx

0

9999

Current level 2 password

Aktuelles Level 2 Passwort

4

L3 Password *x

L3 Passwort *x

xxxx

0

9999

Current level 3 password

Aktuelles Level 3 Passwort

# 4

L1 PW_Counter x

L1 PW_Zaehler x

Counter for changes of level 1 password.

x = Anzahl der Änderungen des Level 1 Passowrtes.

# 4

L2 PW_Counter x

L2 PW_Zaehler x

Counter for changes of level 2 password.

x = Anzahl der Änderungen des Level 2 Passowrtes.

# 4

L3 PW_Counter x

L3 PW_Zaehler x

Counter for changes of level 3 password.

x = Anzahl der Änderungen des Level 3 Passowrtes.

3

DUST BAUD x

DUST BAUDRATE x

9600

9600

19200

Baud rate of communication to PMC-D

Baudrate der Kommunikation zur PMC-D

3

DUST BCC consider x

DUST Blockcheck x

0

0

1

0 = Communication with DUST checksum 1 = Communication with DUST checksum

0 = Kommunikation ohne DUST-Prüfsumme 1 = Kommunikation mit DUST-Prüfsumme

1

Serial link x

Anl. per Z-Bus x

1

0

1

SCCTS communications

SCCTS Kommunikations

0 = switched off 1 = switched on

0 = ausgeschaltet 1 = eingeschaltet

7.6 Conveyor spraying Tab. 22: Conveyor spray Fördererbedüsung P

3

Display in English

Anzeige deutsch

CONVEYOR SPRAY

FÖRDERERBEDÜSUNG

Water flush x

Wasserspülung x

default min

OFF

0

max

1

Meaning in English

Bedeutung deutsch

Headline

Überschrift

Backflush the tensionable drive frame of the chain tensioner

Spannrahmen des Kettenspanners spülen

0 = switched off 1 = switched on

0 = ausgeschaltet 1 = eingeschaltet

3

T_Wflush x

T_Spuelen x

20

1

100

x = Duration of spraying in seconds

3

T_Wdelay x

T_Spwart x

120

60

9999

Water spraying occurs every Bedüsung erfolgt alle x x seconds Sekunden

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x = Bedüsungsdauer in Sekunden

PMC®-R control for chain tensioner

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Conveyor spraying

Parameter Valve cycle counter

7

7.7 Valve cycle counter Tab. 23: Valve cycle count Zähler Ventilzyklen

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

P

Display in English

Anzeige deutsch

default min

VALVE CYCLE COUNT

ZÄHLER VENTILZYKLEN

3

valid *x

gültig *x

1

0

3

erase *x

löschen *x

0

0

max

Meaning in English

Bedeutung deutsch

Headline

Überschrift

1

Indicates if all count values are valid. Should be set to 1 e.g. on a new face or after a PMC-R was changed and all counts were set to the right values.

0 = function error 1 = valid

Zeigt an, ob die Zählerwerte gültig sind. Sollte z.B. bei einem neuen Streb oder nachdem eine PMC-R ausgetauscht wurde und alle Zähler wieder auf die richtigen Werte gesetzt wurden auf 1 gesetzt werden.

0 = Funktionsfehler 1 = gültig

1

Erases counters for all valves.

0 = not active 1 = reset

Löscht die Zählerstände für alle Ventile.

0 = inaktiv 1 = löschen

7.8 Automatic pressure control Tab. 24: Automatic pressure control Druckautomatik P

Display in English

Anzeige deutsch

PRES.AUTO PARAMs

DRUCKAUTO.-PARAMETER

1

P_hold 0 *x

Haltedr. 0 *x

30

5

1

P_hold 1 *x

Haltedr. 1 *x

50

1

P_hold 2 *x

Haltedr. 2 *x

70

PMC®-R control for chain tensioner

default min

max

Meaning in English

Bedeutung deutsch

Headline

Überschrift

350

Forward mode: This pressure [bar] should be maintained in the tensioner cylinders automatically whenever the conveyor's motor current is less than "I_Switch0" or if one of the parameters "I_Switch0" or "I_Switch1" has been set to 0 or no motor current information is available.

Vorwärtsbetrieb: Dieser Druck [bar] soll durch die Automatik in den Spannzylindern aufrechterhalten werden, wenn entweder der Motorstrom des Förderers kleiner ist als "I_Umschalt0" oder wenn einer der Parameter "I_Umschalt0" oder "I_Umschalt1" auf 0 gesetzt wurde oder keine Motorstrominformation vorliegt.

5

350

Forward mode: If the transmitted current value lies between "I_Switch0" and "I_Switch1, the program calculates a target pressure between "P_hold 0" and "P_hold 1".

Vorwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Umschalt0" und "I_Umschalt1" liegt, dann berechnet das Programm einen Zieldruck zwischen "Haltedr. 0" und "Haltedr. 1".

5

350

Forward mode: If the transmitted current value lies between "I_Switch1" and "I_Switch2, the program calculates a target pressure between "P_hold 1" and "P_hold 2".

Vorwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Umschalt1" und "I_Umschalt2" liegt, dann berechnet das Programm einen Zieldruck zwischen "Haltedr. 1" und "Haltedr. 2".

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Parameter

7 P

Display in English

Anzeige deutsch

default min

max

Meaning in English

Bedeutung deutsch

1

P_hold 3 *x

Haltedr. 3 *x

100

5

350

Forward mode: If the transmitted current value lies between "I_Switch2" and "I_Switch3, the program calculates a target pressure between "P_hold 2" and "P_hold 3".

If the transmitted current value is above "I_Switch3", the program sets the target pressure to "P_hold 3".

Vorwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Umschalt2" und "I_Umschalt3" liegt, dann berechnet das Programm einen Zieldruck zwischen "Haltedr. 2" und "Haltedr. 3".

Wenn der übertragene Stromwert über "I_Umschalt3" liegt, dann setzt das Programm den Zieldruck auf "Haltedr. 3".

1

I_Switch0 *x

I_Umschalt0 *x

30

0

1000

Forward mode: This parameter should be set to the minimum achievable motor current value [%] (empty conveyor). It is used together with the "P_hold 0" parameter to calculate the target pressure for the pressure controller.

Vorwärtsbetrieb: Dieser Parameter soll auf den minimal erreichbaren Motorstromwert [%] gestellt werden (leerer Förderer). Er wird zusammen mit dem Parameter "Haltedr. 0" benutzt, um den Zieldruck für die Druckregelung zu berechnen.

1

I_Switch1 *x

I_Umschalt1 *x

50

0

1000

Forward mode: The parameters for the motor current values ("I_Switch") [%] determine which holding pressures to use for the target pressure calculation.

For details, see explantion of holding pressures.

Vorwärtsbetrieb: Die Parameter für die Motorstromwerte ("I_Umschalt") [%] bestimmen, welche Haltedrücke für die Berechnung des Zieldrucks verwendet werden.

Für Details siehe Erklärung der Haltedrücke.

1

I_Switch2 *x

I_Umschalt2 *x

100

0

1000

Forward mode: The parameters for the motor current values ("I_Switch") [%] determine which holding pressures to use for the target pressure calculation.

For details, see explantion of holding pressures.

Vorwärtsbetrieb: Die Parameter für die Motorstromwerte ("I_Umschalt") [%] bestimmen, welche Haltedrücke für die Berechnung des Zieldrucks verwendet werden.

Für Details siehe Erklärung der Haltedrücke.

1

I_Switch3 *x

I_Umschalt3 *x

120

0

1000

Forward mode: This parameter should be set to the maximum achievable motor current value of the tail gate motor [%] (conveyor with maximum load). It is used together with the parameter "P_hold 3" to calculate the target pressure for pressure control.

Vorwärtsbetrieb: Dieser Parameter soll auf den maximal erreichbaren Motorstromwert des Hilfsantriebmotors [%] gestellt werden (Förderer mit maximaler Belastung). Er wird zusammen mit dem Parameter "Haltedr. 3" benutzt, um den Zieldruck für die Druckregelung zu berechnen.

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PMC®-R control for chain tensioner

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Automatic pressure control

Parameter

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Automatic pressure control

7

P

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default min

max

Meaning in English

Bedeutung deutsch

1

P_Rev_hold 0 *x

Rück.Haltedr. 0 *x

200

5

350

Reverse mode: This pressure [bar] should be maintained in the tensioner cylinders automatically whenever the conveyor's motor current is less than "I_Rev.Switch0" or if one of the parameters "I_Rev.Switch0" or "I_Rev.Switch1" has been set to 0 or no motor current information is available.

Rückwärtsbetrieb: Dieser Druck [bar] soll durch die Automatik in den Spannzylindern aufrechterhalten werden, wenn entweder der Motorstrom des Förderers kleiner ist als "I_Rück.Umschalt0" oder wenn einer der Parameter "I_Rück.Umschalt0" oder "I_Rück.Umschalt1" auf 0 gesetzt wurde oder keine Motorstrominformation vorliegt.

1

P_Rev_hold 1 *x

Rück.Haltedr. 1 *x

200

5

350

Reverse mode: If the transmitted current value lies between "I_Rev.Switch0" and "I_Rev.Switch1, the program calculates a target pressure between "P_Rev_hold 0" and "P_Rev_hold 1".

Rückwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Rück.Umschalt0" und "I_Rück.Umschalt1" liegt, dann berechnet das Programm einen Zieldruck zwischen "Rück.Haltedr. 0" und "Rück.Haltedr. 1".

1

P_Rev_hold 2 *x

Rück.Haltedr. 2 *x

200

5

350

Reverse mode: If the transmitted current value lies between "I_Rev.Switch1" and "I_Rev.Switch2, the program calculates a target pressure between "P_Rev_hold 1" and "P_Rev_hold 2".

Rückwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Rück.Umschalt1" und "I_Rück.Umschalt2" liegt, dann berechnet das Programm einen Zieldruck zwischen "Rück.Haltedr. 1" und "Rück.Haltedr. 2".

1

P_Rev_hold 3 *x

Rück.Haltedr. 3 *x

200

5

350

Reverse mode: If the transmitted current value lies between "I_Rev.Switch2" and "I_Rev.Switch3, the program calculates a target pressure between "P_Rev_hold 2" and "P_Rev_hold 3".

If the transmitted current value is above "I_Rev.Switch3", the program sets the target pressure to "P_Rev_hold 3".

Rückwärtsbetrieb: Wenn der übertragene Stromwert zwischen "I_Rück.Umschalt2" und "I_Rück.Umschalt3" liegt, dann berechnet das Programm einen Zieldruck zwischen "Rück.Haltedr. 2" und "Rück.Haltedr. 3".

Wenn der übertragene Stromwert über "I_Rück.Umschalt3" liegt, dann setzt das Programm den Zieldruck auf "Rück.Haltedr. 3".

1

I_Rev.Switch0 *x

I_Rück.Umschalt0 *x

30

0

1000

Reverse mode: This parameter should be set to the minimum achievable motor current value [%] (empty conveyor). It is used together with the "P_Rev_hold 0" parameter to calculate the target pressure for the pressure controller.

Rückwärtsbetrieb: Dieser Parameter soll auf den minimal erreichbaren Motorstromwert [%] gestellt werden (leerer Förderer). Er wird zusammen mit dem Parameter "Rück.Haltedr. 0" benutzt, um den Zieldruck für die Druckregelung zu berechnen.

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Parameter

7 P

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default min

max

Meaning in English

Bedeutung deutsch

1

I_Rev.Switch1 *x

I_Rück.Umschalt1 *x

50

0

1000

Reverse mode: The parameters for the motor current values ("I_Rev.Switch") [%] determine which holding pressures to use for the target pressure calculation.

For details, see explantion of holding pressures.

Rückwärtsbetrieb: Die Parameter für die Motorstromwerte ("I_Rück.Umschalt") [%] bestimmen, welche Haltedrücke für die Berechnung des Zieldrucks verwendet werden.

Für Details siehe Erklärung der Haltedrücke.

1

I_Rev.Switch2 *x

I_Rück.Umschalt2 *x

100

0

1000

Reverse mode: The parameters for the motor current values ("I_Rev.Switch") [%] determine which holding pressures to use for the target pressure calculation.

For details, see explantion of holding pressures.

Rückwärtsbetrieb: Die Parameter für die Motorstromwerte ("I_Rück.Umschalt") [%] bestimmen, welche Haltedrücke für die Berechnung des Zieldrucks verwendet werden.

Für Details siehe Erklärung der Haltedrücke.

1

I_Rev.Switch3 *x

I_Rück.Umschalt3 *x

120

0

1000

Reverse mode: This parameter should be set to the maximum achievable motor current value of the tail gate motor [%] (conveyor with maximum load). It is used together with the parameter "P_Rev_hold 3" to calculate the target pressure for pressure control.

Rückwärtsbetrieb: Dieser Parameter soll auf den maximal erreichbaren Motorstromwert des Hilfsantriebmotors [%] gestellt werden (Förderer mit maximaler Belastung). Er wird zusammen mit dem Parameter "Rück.Haltedr. 3" benutzt, um den Zieldruck für die Druckregelung zu berechnen.

1

P_hyster. *x

Hyster.Druck *x

7

5

50

The pressure [bar] in the tensioner cylinder is allowed to exceed the target pressure by this value before the control responds.

Der Druck [bar] im Spannzylinder darf den Zieldruck um diesen Wert überschreiten, bevor die Regelung anspricht.

1

P_lo_hyster. *x

Unt. Hyster. *x

7

5

50

The pressure [bar] in the tensioner cylinder is allowed to drop below the target pressure by this value before the control responds.

Der Druck [bar] im Spannzylinder darf den Zieldruck um diesen Wert unterschreiten, bevor die Regelung anspricht.

1

T_max.idle *x

Max.Ruhez. *x

0

0

32000

If no great difference between the target pressure and the actual pressure is recognized for a prolonged period of time, an extension cycle will be nevertheless started no later than after this time, after which the pressure will be checked.

The cylinder will be driven back a bit afterwards as needed. If the parameter is at 0, this process will not be carried out in a time-controlled manner.

Wird für längerer Zeit keine große Differenz zwischen dem Zieldruck und dem Istdruck erkannt, wird nach spätestens dieser Zeit trotzdem ein Ausfahrzyklus gestartet und danach der Druck überprüft. Gegebenenfalls wird der Zylinder im Anschluss wieder ein Stück zurückgefahren. Steht der Parameter auf 0, wird dieser Vorgang nicht zeitgesteuert durchgeführt.

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PMC®-R control for chain tensioner

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Automatic pressure control

Parameter

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Automatic pressure control

7

P

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default min

max

Meaning in English

Bedeutung deutsch

1

Retry count *x

Anz. Spannvers. *x

3

0

500

If the path minimum ("Min.ext.str.") is not reached (error: "T_Extendt") when the cylinders are extended, a counter is raised by 1 each time. This counter is set to 0 again after every successful tensioning. If this counter now reaches a value that becomes greater than the parameter “Retry count”, the automatic sequence will abort with the error message “EXT. Count overflw.”, if this function is registered. The error is stored in the column “HISTORY ERROR” and the enablement bit to the conveyor is reset. If this parameter is set to 0, the counter will not evaluate and the automatic sequence continues to attempt cyclic re-tensioning.

Wird beim Ausfahren der Zylinder das Wegminimum ("Min. Ausf.weg") nicht erreicht (Fehler: "Spannzeit"), wird jedes Mal ein Zähler um 1 erhöht. Nach jedem erfolgreichen Spannen wird dieser Zähler wieder auf 0 gesetzt. Erreicht dieser Zähler nun einen Wert, der größer als der Parameter ”Anz. Spannvers.” wird, bricht die Automatik mit der Fehlermeldung ”Anz. Nachspannen” ab, falls diese Funktion angemeldet ist. Der Fehler wird in der Spalte ”HIST. FEHLER” gespeichert und das Freigabebit zum Förderer wird rückgesetzt. Ist dieser Parameter auf 0 gesetzt, erfolgt keine Zählerauswertung und die Automatik versucht weiterhin zyklisch nachzuspannen

1

Retry count ret. *x

Anz.Entspannver. *x

10

0

500

If the path minimum ("Min.ext.str.") is not reached (error: "T_Retractt") when the cylinders are retracted, a counter is raised by 1 each time. This counter is set to 0 again after every successful retraction. If this counter now reaches a value that becomes greater than the parameter “Retry count ret.”, the automatic sequence will abort with the error message “RET. Count overflw.”, if this function is registered. The error is stored in the column “HISTORY ERROR” and the enablement bit to the conveyor is reset. If this parameter is set to 0, the counter will not evaluate and the automatic sequence continues to attempt cyclic retractioning.

Wird beim Einfahren der Zylinder das Wegminimum ("Min. Ausf.weg") nicht erreicht (Fehler: "Entspannzeit"), wird jedes Mal ein Zähler um 1 erhöht. Nach jedem erfolgreichen Entspannen wird dieser Zähler wieder auf 0 gesetzt. Erreicht dieser Zähler nun einen Wert, der größer als der Parameter ”Anz.Entspannver.” wird, bricht die Automatik mit der Fehlermeldung ”Anz. Entspannen” ab, falls diese Funktion angemeldet ist. Der Fehler wird in der Spalte ”HIST. FEHLER” gespeichert und das Freigabebit zum Förderer wird rückgesetzt. Ist dieser Parameter auf 0 gesetzt, erfolgt keine Zählerauswertung und die Automatik versucht weiterhin zyklisch entspannen

1

Min.ext.str. *x

Min. Ausf.weg *x

10

0

100

An extension procedure starts every time the actual pressure is lower than the target pressure by more than the "P_lo_hyster.". The attempt is always made to cover the path defined by the "Min.ext.str." before the actual pressure is checked once again. A further adjustment cycle is started if this path differential is not achieved.

Jedes mal, wenn der Istdruck um mehr als "Unt. Hyster.". niedriger ist als der Zieldruck, wird ein Ausfahrvorgang begonnen. Es wird immer versucht, den durch "Min. Ausf.weg" definierten Weg zurückzulegen, bevor der Istdruck erneut überprüft wird. Beim Nichterreichen dieser Wegdifferenz wird ein weiterer Stellzyklus begonnen.

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Parameter

7

Automatic pressure control

P

Display in English

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1

Retract Mode *x

Einfahrmodus *x

default min 0

max

Meaning in English

Bedeutung deutsch

2

T_Retract

x = 0: Der Einfahrvorgang wird beendet, wenn die durch den Parameter "Entspannzeit" festgelegte Zeit abgelaufen ist. x = 1: Der Einfahrvorgang wird beendet, wenn der Zieldruck erreicht oder unterschritten wird oder die durch den Parameter "Entspannzeit" festgelegte Zeit abgelaufen ist.

1

T_Extend *x

Spannzeit *x

200

10

6000

If a tensioning procedure takes longer than the time determined here without the path determined by the "Min.ext.str." being travelled over, the valve will be switched off and the controller will be restarted only after a delay time.

Dauert ein Spannvorgang länger als die hier festgelegte Zeit ohne dass der durch den Parameter "Min. Ausf.weg" festgelegte Weg zurückgelegt ist, wird das Ventil abgeschaltet und die Regelung erst nach einer Wartezeit wieder fortgesetzt.

1

T_Retract *x

Entspannzeit *x

50

10

6000

If a relief procedure takes longer than the time determined here without the target pressure being reached, then the valve is switched off and the control is not resumed until after a delay time.

Dauert ein Entspannvorgang länger als die hier festgelegte Zeit ohne dass der Zieldruck erreicht wird, wird das Ventil abgeschaltet und die Regelung erst nach einer Wartezeit wieder fortgesetzt.

1

T_PostRet *x

Nachstellzeit *x

20

0

150

After every tensioning procedure, the tensioner cylinder is automatically retracted (bled) again for the time determined here. If the parameter value is greater than 0, then this post-setting procedure is a permanent part of the tensioning procedure.

After that, the control procedure (next measuring cycle) is continued after completion of a delay time.

Nach jedem Spannvorgang wird der Spannzylinder automatisch wieder für die hier festgelegte Zeit eingefahren (entlüftet). Ist der Parameterwert größer 0, ist dieser Nachstellvorgang fester Bestandteil des Spannvorgangs. Danach wird die Regelung (nächster Messzyklus) erst nach Ablauf einer Wartezeit fortgesetzt.

1

T_Wait *x

Wartezeit *x

500

50

3000

After completion of the tensioning or relief time, the setting procedure is interrupted for the time defined here. After that, the controller checks again whether the chain-condition triggering the setting procedure is still present. If this is the case and the maximum tensioning or release number is not yet exceeded, it starts a new setting attempt.

Nach Ablauf der Spannoder Entspannzeit wird der Stellvorgang für die hier festgelegte Zeit unterbrochen.

Anschließend überprüft die Regelung erneut, ob der den Stellvorgang auslösende Kettenzustand noch vorliegt.

Falls dies so ist und die maximale Spann- oder Entspannanzahl noch nicht überschritten ist, startet sie einen erneuten Stellversuch.

Time settings in 1/100 sec Zeiteinstellungen in 1/100 sec

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PMC®-R control for chain tensioner

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x = 2: Der Einfahrvorgang wird beendet, wenn der obere Hysteresewert über dem Zieldruck unterschritten wird oder die durch den Parameter "Entspannzeit" festgelegte Zeit abgelaufen ist.

Parameter

7

Diagnosis

7.9 Diagnosis

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Tab. 25: Diagnostics Diagnose Display in English

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Meaning in English

Bedeutung deutsch

DIAGNOSTIC

DIAGNOSE

Headline

Überschrift

SupNo x y u N v

AsbNr x y u N v

x = shield number y = status type u = IO type v = network number

x = Schildnummer y = Statustyp u = IO-Typ v = Netznummer

s: x y (u v)

s: x y (u v)

x = last shield number in F1 direction y = last shield number in A1 direction u = parameterized last shield number in F1 direction v = parameterized last shield number in A1 direction

x = letzte Schildnummer in Richtung F1 y = letzte Schildnummer in Richtung A1 u = parametrierte letzte Schildnummerin Richtung F1 v = parametrierte letzte Schildnummer in Richtung A1

n: x y u (v)

n: x y u (v)

x = last network number in F1 direction y = last network number in A1 direction u = current number of network computers v = parameterized number of network computers

x = letzte Netznummer in Richtung F1 y = letzte Netznummer in Richtung A1 u = momentane Anzahl der Netzrechner v = parametrierte Anzahl der Netzrechner

LTime: x (y-u)

LZeit: x (y-u)

x = current program runtime in milliseconds y = minimum program runtime u = maximum program runtime The P key can be used to reset the values.

x = aktuelle Programmdurchlaufzeit in Millisekunden y = minimale Programmdurchlaufzeit u = größte Programmdurchlaufzeit Mit der Taste P können die Werte zurückgesetzt werden.

Codeplug Init x

Codeplug Init x

z actual y

z actual y

Code plug information x = number of the code plug read in when starting up the computer z = state of the code plug y = number of the code plug currently connected

Anzeige der seriellen Kodiersteckerinformationen x = Eingelesene Codeplug nummer beim Hochlauf des Rechners z = Zustand des Codeplugs y = Aktuell gesteckte Codeplugnummer

CP # x Area y

CP # x Area y

Displaying of serial code plug information

Anzeige der im Programm vorgesehenen seriellen Kodiersteckerinformationen

SD x status y

VL x Status y

Solenoid driver status

Ventilansteuerleistenstatus

x = {9,10,12}: solenoid driver at port {E1; E2; F2}

x = {9,10,12}: Ventilansteuerleiste an Port {E1; E2; F2}

y = 8000: no solenoid driver or solenoid driver error

y = 8000: keine Ventilansteuerleiste oder Ventilansteuerleistenfehler

y = 400: PMC-R timeout in SD direction

y = 400: Timeout PMC-R in Richtung VL

y = 200: SD timeout in PMC-R direction

y = 200: Timeout VL in Richtung PMC-R

Solenoid driver status

Ventilansteuerleistenstatus

x = {9,10,12}: solenoid driver at port {E1; E2; F2}

x = {9,10,12}: Ventilansteuerleiste an Port {E1;E2; F2}

y=

y=

u,v = bit coded solenoid number using hexadecimal numbers

u,v = bit-codierte Ausgabe der Ventilnummer in Hexadezimalzahlen

Solenoid driver status

Ventilansteuerleistenstatus

x = {9,10,12}: solenoid driver at port {E1; E2; F2}

x = {9,10,12}: Ventilansteuerleiste an Port {E1; E2; F2}

Solenoid driver status

Ventilansteuerleistenstatus

x = {9,10,12}: solenoid driver at port {E1; E2; F2}

x = {9,10,12}: Ventilansteuerleiste an Port {E1; E2; F2}

Listing of nacks, crc errors, retries and spikes on the SD line.

Auflistung von Nacks, Crc-Fehlern, Retries und Spikes auf der VL-Leitung.

SD x y u v

SD x y u v

SD x V: y u v

F2 x y u v

VL x y u v

VL x y u v

VL x V: y u v

F2 x y u v

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7

Parameter Diagnosis

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Meaning in English

Bedeutung deutsch

I total: x y I Scu: u v

I total: x y I Scu: u v

x = momentary total current and

x = aktueller Gesamtstrom und

y = maximum current. Use P key to reset

y = maximaler Strom. Mit Taste P zurücksetzen

Current value of the DC-DC transformer for computer supply I B+C: x y I A2D1D2: u v

I B+C: x y I A2D1D2: u v

Stromwert des DC-DC-Wandlers zur Rechnerversorgung

Current consumption of

Stromaufnahme der Ports B1, B2, C1, C2,

B1, B2, C1, C2,

A2, D1 und D2

I Out: x y

I Out: x y

Current consumption of E1, E2 and F2 ports

Stromaufnahme der Ports E1, E2 und F2

V Scu: x min y max u

V Scu: x min y max u

PMC-R supply voltage

Versorgungsspannung der PMC-R

Min/max values

Gemessene Extremwerte

V Out: x min y max u

V Out: x min y max u

Voltage at E1, E2 and F2 ports

Spannung an den Ports E1, E2 und F2

Min/max values

Gemessene Extremwerte

PMCR Ser.No. x

PMCR Ser.No. x

PMC-R serial number

Seriennummer der PMC-R

CSTS x y u v

CSTS x y u v

Counter for the SCCTS status (hexadecimal):

Zähler zum SCCTS-Status (hexadezimal):

x = read requests y = sent data u = received data

x = Leseanforderungen y = gesendete Daten u = empfangene Daten v = Sendebestätigungen

v = transmission confirmation CSTE x y u v

CSTI x y u v

VS x y u v

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CSTE x y u v

CSTI x y u v

VS x y u v

Counter for SCCST errors (hexadecimal):

Zähler zu SCCST-Fehlern (hexadezimal):

x = marker for presently displayed error index

x = Merker für momentan angezeigten Fehlerindex

y = display of faulty message ID

y = Anzeige der fehlerhaften Telegramm-ID

u = marker for presently displayed data index

u = Merker für momentan angezeigten Datenindex

v = display of faulty data

v = Anzeige der fehlerhaften Daten

Counter for SCCST errors (hexadecimal):

Zähler zu SCCST-Fehlern (hexadezimal):

x = communication ID

x = Kommunikations-ID

y = counter for received messages

y = Empfangszähler der Telegramme

u = marker for presently displayed data index

u = Merker für momentan angezeigten Datenindex

v = display of faulty data

v = Anzeige der fehlerhaften Daten

VShield communication status.

Status Kommunikation mit VShield:

x = Status

x = Status

(0 = idle

(0 = Leerlauf

1 = waiting

1 = warte

2 = sending data to VShield)

2 = sende Daten an VShield)

y = counter send data

y = Zähler Sendedaten

u = counter receive data

u = Zähler Empfangsdaten

v = counter invalid telegrams

v = Zähler ungültige Telegramme

PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

A2, D1 and D2 ports

Parameter

7

Diagnosis

Display in English

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Meaning in English

Bedeutung deutsch

VE x y u v

VE x y u v

VShield communication error status. Pressing the N key increments the error index (x), pressing the P key increments the data index (u). Pressing the ENTER key resets the first and the third value.

Status Kommunikation mit VShield. Mit der Taste N lässt sich der Fehlerindex (x) hochzählen, mit der Taste P lässt sich der Datenindex (u) hochzählen. Die ENTERTaste setzt den ersten und dritten Wert zurück.

x = Error index (1-10): possibility to store 10 different errors y = error number (0 = no error 5 = wrong receive address 6 = wrong send address 7 = wrong telegram ID 8 – 20 = wrong size of the different VShield telegrams (number desribes the telegram type))

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

u = data index v = data of wrong telegram

x = Fehlerindex (1-10): Hier können zehn verschiedene Fehler gespeichert werden y = Fehlernummer (0 = kein Fehler 5 = falsche Empfangsadresse 6 = falsche Sendeadresse 7 = falsche Telegramm-ID 8 – 20 = falsche Größe der verschiedenen VShield-Telegramme (die Nummer beschreibt den Telegrammtyp)) u = Datenindex v = Wert

VI-ID-No. *x

VI-ID-No. *x

Input of telegram number for diagnostics

Eingabe der Telegrammnummer zur Diagnose

VI x y u v

VI x y u v

VShield communication telegrams.

Kommunikationstelegramme VShield.

x = telegram number (parameter VI-ID-No.)

x = eingegebene Telegrammnummer (Parameter VI-ID-No)

y = telegram counter u = data index v = data value

y = Zähler Telegramme u = Datenindex v = Wert

VStatSumCount

VStatSumCount

Shows the number of transmitted status Anzahl der übermittelten Statustelegramme telegrams from all shields from the server to aller Schilde vom Server an VShield.

VShield.

Mit der Taste P lässt sich der EmpPressing the P key resets the counter. fangszähler zurücksetzen.

z

z

Telegram diagnostics

Diagnose des Telegrammverkehrs

TA1 R: x T: y TA1 R: u T: v MAX

TA1 R: x T: y TA1 R: u T: v MAX

HDLC port A1 telegrams per sec.

HDLC Port A1 Telegramme pro Sek.

HDLC port A1 maximum number of telegrams per sec.

HDLC Port A1 Maximale Anzahl Telegramme pro Sek.

R = received

R = empfangen

T = transmitted

T = gesendet

HDLC port F1 telegrams per sec.

HDLC Port F1 Telegramme pro Sek.

HDLC port F1 maximum number of telegrams per sec.

HDLC Port F1 Maximale Anzahl Telegramme pro Sek.

R = received

R = empfangen

T = transmitted

T = gesendet

Diagnostic information:

Diagnoseinformation: HDLC Port A1 EventNummer

TF1 R: x T: y TF1 R: u T: v MAX

A1 x z

TF1 R: x T: y TF1 R: u T: v MAX

A1 x z

HDLC port A1 event number Use N and P keys to select the event and show its amount.

F1 x z

F1 x z

Diagnostic information: HDLC port F1 event number Use N and P keys to select the event and show its amount.

R_INT x y

R_INT x y

PMC®-R control for chain tensioner

HDLC Rxd internal error of received data: Error number - amount of errors

Auswahl des Events und Anzeige der Anzahl mit den Tasten N und P.

Diagnoseinformation: HDLC Port F1 EventNummer Auswahl des Events und Anzeige der Anzahl mit den Tasten N und P. HDLC Rxd interner Empfangsdatenfehler: Fehlernummer - Anzahl der Fehler

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7

Parameter Diagnosis

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Cl.hdlc (N)

Cl.hdlc (N)

Use N key to delete HDLC error locally

HDLC Fehler mit Taste N lokal löschen

Cl.hdlc_all (N)

Cl.hdlc_all (N)

Use N key to delete HDLC error globally

HDLC Fehler mit Taste N global löschen

x<F1 y A1> u EQ: v NEQ: t

x<F1 y A1> u EQ: v NEQ: t

x = number of computers in F1 port direction

x = Anzahl der Rechner in Richtung Port F1

y = number of all computers identified u = number of computers in A1 port direction v = number of computers with the same application

y = Anzahl aller erkannten Rechner u = Anzahl der Rechner in Richtung Port A1 v = Anzahl Rechner mit der gleichen Applikation t = Anzahl Rechner mit unterschiedlicher Applikation

Flashbooter z

Flashbooter z

Name of the flashbooter

Name des Flashbooters

z BOOTER CRC x

z BOOTER CRC x

Creation time of the Booter

Zeitpunkt der Erstellung des Booters

z = date, time

z = Datum Uhrzeit

x = hexadecimal value

x = Hexadezimalwert

z

z

Name of the compiled PMC application

Name der kompilierten PMC-Applikation

z APPL. CRC: x

z APPL. CRC: x

Creation time of the application

Zeitpunkt der Erstellung der Applikation

z = date, time

z = Datum Uhrzeit

x = hexadecimal value

x = Hexadezimalwert

x = current date

x = aktuelles Datum

y = current time

y = aktuelle Uhrzeit

Use “enter” to switch to input mode.

Mit “enter” in Eingabemodus wechseln.

N and P keys can be changed if display is flashing; complete entry with “enter” if display is flashing.

Mit blinkende Anzeige Taste N und P änderbar, blinkende Anzeige mit “enter” Eingabe abschießen.

Date: x Time: y

Date: x Time: y

DISP br. - +

DISP br. - +

Display brightness setting

Einstellung Displayhelligkeit

DISP cont. - +

DISP cont. - +

Display contrast setting

Einstellung Displaykontrast

z LStat x y u

z LStat x y u

Display last sequence of a module (e.g.: se- Letzte Sequenz eines Modules anzeigen quence) (z.B.: Ablauf) z = {<, =, >} {RIGHT, own, LEFT}

z = {<, =, >} {RECHTS, eigen, LINKS}

x, y, u = codes for executed functions for service personnel

x, y, u = Kennzahlen für durchfahrene Funktionen für Servicepersonal

Ver.ApiLib xM yS uR

Ver.ApiLib xM yS uR

Apilib version number

Versionsnummer der ApiLib

Ver.ClibData xM yS uR

Ver.ClibData xM yS uR

Version number calibration data

Versionsnummer der Kalibrierungsdaten

Ver.DispBoot xM yS uR

Ver.DispBoot xM yS uR

Display booter version number

Versionsnummer des Displaybooters

Ver.DispAppl xM yS uR

Ver.DispAppl xM yS uR

Display application version number

Versionsnummer der Displayapplikation

Ver.SD_Boot xM yS uR

Ver.VentBoot xM yS uR

Solenoid driver booter version number

Versionsnummer des Ventilansteuerleistenbooters

Ver.SD_Appl xM yS uR

Ver.VentAppl xM yS uR

Solenoid driver application version number

Versionsnummer der Ventilansteuerleistenapplikation

IO E: x S: y

IO E: x S: y

Query of IO (input, output) functionality

Abfrage der IO- (Ein-,Ausgabe) Funktionalität

x = {0,-6, -17}{no error, no driver access, display not possible} y = {0,1}{invalid, valid}

x = {0,-6, -17}{kein Fehler, kein Treiberzugriff, Anzeige nicht möglich} y = {0,1}{ungültig, gültig}

Approval: z

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Approval: z

Approval information

Information über die Zulassung

PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

t = number of computers with different applications

Parameter Pre-tensioning

Display in English

Anzeige deutsch

Meaning in English

Build No: x LM y MR u

Build Nr: x LM y MR u Revision number of repository

7

Bedeutung deutsch Revisionsnummer des Repositorys

7.10 Pre-tensioning Tab. 26: PRETENSION PARAMETER VORSPANNPARAMETER

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

P

Display in English

Anzeige deutsch

Pretension

Vorspannen

1

P_pretension *x

Vorspanndruck *x

100

5

1

P_RevPreten *x

Rück.Vorsp.druck *x

90

1

S_pre-extend *x mm

Vorspannweg *x mm

1

Starttime *x

Signalzeit *x

PMC®-R control for chain tensioner

default min

max

Meaning in English

Bedeutung deutsch

Headline

Überschrift

250

Forward mode: Cylinder pressure [bar] that must be reached after receiving the prewarning signal during the pretensioning procedure before starting up the conveyor. After this, the control system gives the release for conveyor start-up.

Vorwärtsbetrieb: Zylinderdruck [bar], der nach Empfang des Vorwarnsignals beim Vorspannvorgang vor Anlaufen des Förderers erreicht werden muss. Danach gibt die Steuerung die Freigabe zum Fördereranlauf.

5

250

Reverse mode: Cylinder pressure [bar] that must be reached after receiving the prewarning signal during the pretensioning procedure before starting up the conveyor. After this, the control system gives the release for conveyor start-up.

Rückwärtsbetrieb: Zylinderdruck [bar], der nach Empfang des Vorwarnsignals beim Vorspannvorgang vor Anlaufen des Förderers erreicht werden muss. Danach gibt die Steuerung die Freigabe zum Fördereranlauf.

20

0

250

For every pretensioning procedure, the tensioning procedure additionally continues by the path defined here after the pretensioning pressure is reached (or up to completion of the "Valvetime"), before the actual automatic tensioning operation is activated.

Bei jedem Vorspannvorgang wird nach Erreichen des Vorspanndruckes zusätzlich um den hier definierten Weg weitergespannt (oder bis Ablauf der „Stellzeit“), bevor die eigentliche Spannautomatik aktiviert wird.

2800

500

6000

If this time is exceeded after the pretensioning procedure (reaching the pretensioning pressure or path), without the arrival of the “Conveyor is running” signal, then the automatic sequence is suspended up to the next conveyor signal change, and a corresponding error status is set.

Wird diese Zeit nach dem Vorspannvorgang (Erreichen des Vorspanndrucks/- wegs) ohne Eintreffen des Signals „Förderer läuft“ überschritten, dann wird die Automatik bis zum nächsten Förderersignalwechsel abgeschaltet und ein entsprechender Fehlerzustand gesetzt.

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Parameter

7 P

Display in English

Anzeige deutsch

default min

max

Meaning in English

Bedeutung deutsch

1

Valvetime *x

Stellzeit *x

1000

6000

If this time is exceeded during the pretensioning procedure without reaching the pretensioning pressure, then the automatic sequence is suspended up to the next conveyor signal change, and a corresponding error status is set and displayed.

Wird diese Zeit während des Vorspannvorgangs ohne Erreichen des Vorspanndrucks überschritten, wird die Automatik bis zum nächsten Förderersignalwechsel abgeschaltet und ein entsprechender Fehlerzustand gesetzt und angezeigt.

If this time is exceeded without reaching the pretensioning path, but while reaching the pretensioning pressure, then the automatic sequence will, nevertheless, be activated.

Wird diese Zeit ohne Erreichen des Vorspannweges aber unter Erreichen des Vorspanndruckes überschritten, wird trotzdem die Automatik aktiviert.

200

1

Delaytime *x

Startverzög. *x

10

10

3000

After this time has elapsed, following the arrival of the “Conveyor is running” signal and the reaching the pretensioning path, the actual automatic sequence is started.

Nach Ablauf dieser Zeit, nach dem Eintreffen des Signals „Förderer läuft“ und Erreichen des Vorspannweges, wird die eigentliche Automatik gestartet.

3

No ext. shtdn. *z

Kein Abschalten *z

OFF

OFF

ON

AUS

AUS

AN

Prevents conveyor shutdown via the chain tensioning system. The system always simulates a perfect condition.

OFF = Shutdown is proceeded ON = Shutdown is prohibited

Verhindert eine Abschaltung des Förderers über das Kettenspannsystem. Es wird immer ein einwandfreier Systemzustand vorgespiegelt.

AUS = Abschaltung erfolgt AN = Abschaltung wird verhindert

CAUTION: Only for set-up and test purposes so that the mining operation is not disturbed!

Achtung: Nur für Einricht- und Testzwecke, um den Abbaubetrieb nicht zu stören!

3

Timeout Comm. *x

Timeout Komm. *x

500

300

6000

If this time is exceeded without receiving a valid telegram, then the automatic sequence is suspended.

Wird diese Zeit überschritten, ohne dass ein gültiges Telegramm empfangen wurde, wird die Automatik abgeschaltet.

1

Min. stroke *x mm

Wegminimum *x mm

10

0

800

Specifies the path measurement value for the totally retracted tensioner cylinder.

Gibt den Wegmesswert für den ganz eingefahrenen Spannzylinder an.

1

Max. stroke *x mm

Wegmaximum *x mm

980

100

999

Specifies the path measurement value for the totally extended tensioner cylinder.

Gibt den Wegmesswert für den ganz ausgefahrenen Spannzylinder an.

3

Reed rod type *x

Reedstabtyp *x

1

0

1

Indicates the type of reed rod used. x = 0: 500 mm x = 1: 1000 mm

Gibt den verwendeten Reedstabtyp an. x = 0: 500 mm x = 1: 1000 mm

1

Max. warning *x mm

Max. Warnung *x mm

950

20

999

Specifies the path measurement value at which a warning message is issued when exceeded.

Gibt den Wegmesswert an, bei dessen Überschreiten eine Warnmeldung abgesetzt wird.

1

Min. warning *x mm

Min. Warnung *x mm

25

0

980

Specifies the path measurement value at which a warning message is issued when it is not achieved.

Gibt den Wegmesswert an, bei dessen Unterschreiten eine Warnmeldung abgesetzt wird.

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PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Pre-tensioning

Parameter Pre-tensioning

P

Display in English

Anzeige deutsch

default min

max

Meaning in English

Bedeutung deutsch

3

Autom. Restart *z

Autom. Neustart *z

ON

OFF

ON

AN

AUS

AN

Specifies whether the automatic system should be automatically restarted for an active “Conveyor is running” signal and switched-off automatic sequence.

OFF = no automatic reactivation ON = automatic reactivation

Gibt an ob bei anstehendem Signal „Förderer läuft“ und abgeschalteter Automatik diese automatisch reaktiviert werden soll.

AUS = nicht automatisch reaktivieren AN = automatisch reaktivieren

ON

OFF

ON

AN

AUS

AN

Defines whether or not a reed rod has been connected to the system.

OFF = no reed rod connected ON = reed rod connected

Legt fest, ob ein Reedstab an das System angeschlossen wurde.

AUS = kein Reedstab angeschlossen AN = Reedstab angeschlossen

ON

OFF

ON

AN

AUS

AN

Determines whether a shutdown should be triggered if the extension count is exceeded.

OFF = no shutdown ON = with shutdown

Legt fest, ob bei Überschreitung des Ausfahrzählers eine Abschaltung ausgelöst werden soll.

AUS = ohne Abschaltung AN = mit Abschaltung

ON

OFF

ON

AN

AUS

AN

Determines whether a shutdown is required in the event of faulty communication.

OFF = no shutdown ON = with shutdown

Legt fest, ob bei einer gestörten Kommunikation eine Abschaltung durchgeführt werden soll.

AUS = ohne Abschaltung AN = mit Abschaltung

ON

OFF

ON

AN

AUS

AN

Determines whether a shutdown is required if "Min. stroke" or "Max. stroke" is reached (min/max stroke).

OFF = no shutdown ON = with shutdown

Legt fest, ob beim Erreichen von „Wegminimum“ oder „Wegmaximum“ eine Abschaltung durchgeführt werden soll.

AUS = ohne Abschaltung AN = mit Abschaltung

3

3 Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

7

3

3

check reed rod *z

count shtdn *z

comm shtdn *z

stroke shtdn *z

Wegsensor prüfen *z

Zähler-Absch. *z

Komm.-Absch. *z

Zyl.weg Absch. *z

1

reed rod *x

Wegsensor *x

1

1

2

This parameter switches between main and reserve reed rod sensor. The switchover is proceeded as soon as the automatic is switched off or the conveyor is stopped.

1 = main reed rod 2 = reserve reed rod

Schaltet zwischen dem Haupt- und dem Reservereedmessstab um. Die Umschaltung erfolgt, wenn die Automatik abgeschaltet ist oder der Förderer stehen bleibt.

1 = Hauptreedmessstab 2 = Reservereedmessstab

1

pressure *x

Drucksensor *x

1

1

2

This parameter switches between main and reserve pressure sensor. The switchover is proceeded as soon as the automatic is switched off or the conveyor is stopped.

1 = main pressure sensor 2 = reserve pressure sensor

Schaltet zwischen dem Haupt- und dem Reservedrucksensor um. Die Umschaltung erfolgt wenn die Automatik abgeschaltet ist oder der Förderer stehen bleibt.

1 = Hauptdrucksensor 2 = Reservedrucksensor

1

Max Pos. Diff. *x

Max. Pos.diff. *x

30

0

250

If the absolute diffenrence between the main and the reserve reed rod sensor reaches this value, the message "max. pos. diff. exceeded" will be shown on the visualisationsoftware as long as the diffenrence is not underrun.

Wenn die absolute Differenz zwischen den Messwerten des Haupt- und des Reservereedmessstabes diesen Wert erreicht, wird die Meldung „max. Pos.diff. überschritten“ auf der Visualisierungssoftware solange angezeigt, bis die Differenz unterschritten ist.

PMC®-R control for chain tensioner

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Parameter

7 P

Display in English

Anzeige deutsch

default min

max

Meaning in English

Bedeutung deutsch

1

Max Press. Diff. *x

Max Druckdiff.. *x

30

0

250

If the absolute diffenrence between the main and the reserve presure sensor reaches this value, the message "max. press. diff. exceeded" will be shown on the visualisationsoftware as long as the diffenrence is not underrun.

Wenn die absolute Differenz zwischen den Messwerten des Haupt- und des Reservedrucksensors diesen Wert erreicht, wird die Meldung „max. Druckdiff. überschritten“ auf der Visualisierungssoftware solange angezeigt, bis die Differenz unterschritten ist.

1

offset red.reed *x

Offset red.Weg *x

0

-200

200

This compensation parameter shifts the value measured by reed rod 2 when it is passive. The altered sensor value is shown on the display and taken into account when checking the stroke difference between the two sensors.

Dieser Ausgleichsparameter verschiebt den Messwert des Reedmessstabs 2, wenn dieser passiv ist. Der veränderte Sensorwert wird im Display angezeigt und bei der Prüfung der Wegdifferenz der beiden Sensoren berücksichtigt.

3

Ignore press. *z

Ignor. Druck *z

OFF

OFF

ON

AUS

AUS

AN

OFF = The "P_pretension" must be reached before conveyor release is possible.

ON = When "Max. stroke" is reached, conveyor release occurs, even if "P_pretension" was not reached.

AUS = Der "Vorspanndruck" muss erreicht werden, bevor eine Fördererfreigabe erfolgen kann.

AN = Beim Erreichen von "Wegmaximum" erfolgt eine Fördererfreigabe, auch wenn "Vorspanndruck" nicht erreicht wurde.

OFF

OFF

ON

AUS

AUS

AN

OFF = Pretensioning is required.

ON = The conveyor release signal remains on continuously. The "Conveyor running" signal starts the automatic sequence immediately after the time parameter "Delaytime" elapses.

AUS = Das Vorspannen muss erfolgen.

AN = Das Fördererfreigabesignal wird dauerhaft eingeschaltet. Das Signal ”Förderer läuft” startet die Automatik sofort nach Ablauf des Zeitparameters "Startverzög.".

OFF

OFF

ON

AUS

AUS

AN

OFF = The automatic sequence is started by the pretension command.

ON = The "Conveyor running" signal starts the automatic sequence. The pretension command is not needed.

AUS = Die Automatik wird durch das Vorspannkommando gestartet.

AN = Das Signal ”Förderer läuft” startet die Automatik.

Das Vorspannkommando wird nicht benötigt.

3

3

Skip prestart *z

Start after Tout *z

Kein Vorspannen *z

Start ohne Signal *z

Time settings in 1/100 sec Zeiteinstellungen in 1/100 sec

7.11 Stored error messages If a fault occurs leading to cancellation of the sequence, the cause of the fault is stored in the "HISTORY ERROR" menu. The menu shows the last 20 faults which caused a cancel. Index 0 shows the most recent fault, index 19 shows the oldest. This list cannot be deleted. If a new fault occurs, this is additionally displayed by the LED flashing on key 9 and is displayed by the signal lamp.

Flashing of the displays is switched off once all error messages have been confirmed by pressing the T key [ENTER] several times.

Wenn ein Fehler zu einem Abbruch des Ablaufs führt, dann wird die Fehlerursache im Menü „HIST. FEHLER“ gespeichert. Das Menü zeigt die letzten 20 Fehler, die einen Abbruch verursachten. Der Index 0 zeigt den jüngsten Fehler,

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PMC®-R control for chain tensioner

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Stored error messages

Parameter

7

Stored error messages

Index 19 den ältesten. Diese Liste kann nicht gelöscht werden. Das Auftreten eines neuen Fehlers wird zusätzlich durch das Blinken der LED an Taste 9 und durch die Signallampe angezeigt. Das Blinken der Anzeigen wird abgeschaltet, wenn Sie durch mehrfaches Drücken der Taste T [ENTER] alle Fehlermeldungen bestätigt haben.

Media-ID: EM011881-07-EN / Caterpillar Global Mining Europe GmbH 2021 ©

Tab. 27: Saved error messages Gespeicherte Fehlermeldungen Display in English

Anzeige deutsch

Meaning in English

Bedeutung deutsch

HISTORY ERROR

HIST. FEHLER

Headline

Überschrift

startup pressure

Vorspanndruck

The timer has run out without the parametered pretensioning/start-up pressure having been achieved.

Der Timer ist abgelaufen, ohne dass der parametrierte Vorspanndruck erreicht wurde.

Cylinder stroke

Zylinderwegende

The limit stop was reached during a setting procedure.

Bei einem Stellvorgang wurde der Endanschlag erreicht.

Post extend cnt.

Spannversuche

Max. number of those tensioning cycles cancelled due to errors was exceeded.

Max. Anzahl der wegen Fehler abgebrochener Spannzyklen wurde überschritten.

Comm. not active

Komm. nicht aktiv

PMC-D communication faulty.

Kommunikation mit PMC-D gestört.

startup stroke

Vorspannweg

The timer has run out without the parameDer Timer ist abgelaufen, ohne dass der tered pretensioning/start-up distance having parametrierte Vorspannweg erreicht wurde. been reached.

Conv. Direction

Fördererrichtg.

Attempted change of direction while conveyor was running.

PMC®-R control for chain tensioner

Es wurde ein Richtungswechsel bei laufendem Förderer versucht.

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