Other switching technology in the Bernstein range Foot control terminal ■ FBT2 – Hygienic design for use in medical technology
■ FBT1 – Hygienic design for use in medical technology – Plastic contact housing
■ C2 – Smallest switch for safety applications
■ Ti2 – optimised component size retaining the standard connection techniques with type of protection IP 65
■ I88 – switch standardised in keeping with DIN EN 50047
■ IF – ultra-flat and flexible with type of protection IP 67 – metal actuators
■ ENK – switch standardised in keeping with DIN EN 50041 – metal actuators
■ Bi2 – two cable entries M 16 x 1.5
■ ENM2 – switch standardised in keeping with DIN EN 50041
■ SN2 – three cable entries M 20 x 1.5
Metal encapsulated ■ GC – slim-line construction
■D – heavy-duty metal housing for arduous applications
International Headquarters Denmark Germany Bernstein A/S Bernstein AG Sindalsvej 30 Tieloser Weg 6 DK-8240 Risskov D-32457 Porta Westfalica Phone +45 7020 0522 Phone +49 571 793-0 Fax +45 7020 0177 Fax +49 571 793-555 info@dk.bernstein.eu info@de.bernstein.eu France Bernstein S.A.R.L. Tieloser Weg 6 D-32457 Porta Westfalica Phone +33 1 64 66 32 50 Fax +33 1 64 66 10 02 info@fr.bernstein.eu
Netherlands Bernstein BV Tieloser Weg 6 D-32457 Porta Westfalica Phone +31 314 366088 Fax +31 314 361256 info@nl.bernstein.eu
Switzerland Bernstein (Schweiz) AG Steinhaldenstrasse 14 CH 8954 Geroldswil Phone +41 44 775 71 71 Fax +41 44 775 71 72 info@ch.bernstein.eu
Italy Bernstein S.r.l. Via del pero 12a/b I-24040 Levate (BG) Phone +39 035 4549037 Fax +39 035 4549647 info@it.bernstein.eu
Austria Bernstein GmbH Kurze Gasse 3 A-2544 Leobersdorf Phone +43 2256 62070-0 Fax +43 2256 62618 info@at.bernstein.eu
Great Britain Bernstein Ltd (UK) Unit 1, Westgate Park Tintagel Way Westgate Aldridge West Midlands WS9 8EX Phone +44 1922 744999 Fax +44 1922 457555 info@uk.bernstein.eu
Hungary China Bernstein Safe Solutions Bernstein Kft. Fehér utca 10 (Taicang) Co., Ltd. 1106 Budapest North 38, Dongting Road, Phone +36 1 434 2295 Taicang City Fax +36 1 434 2299 Development Area, info@hu.bernstein.eu Taicang 215400 Jiangsu Provice, P.R. China Phone +86 512 81608180 Fax +86 512 81608181 info@bernstein-safesolutions.cn
www.bernstein.eu
700.0000.787 11.2007 · www.hartwig-at.de · Subject to modifications
Plastic encapsulated
Foot switches Sure-footed Safety
Tailor-made for your applications – the modular foot switch concept from Bernstein! Bernstein offers a wide range of foot switches to meet the exacting requirements found in industrial applications. With up to three pedals, with or without a safety cover (UN), the robust all-metal housing ensures a protection class of IP 65 as standard. The modular design gives you the possibility of defining application-dependent pedal functions with up to four contact combinations per pedal.
Basic types
F1
F2
Basic contact elements
U1Z
1NC/1NO slow make/break
SU1Z
1NC/1NO snap-action
U2Z
2NC/2NO slow make/break
SU2Z
2NC/2NO snap-action
Additional contact combinations and pedal functions, combined with basic housings and switching elements open up further control and operation variants. Complete units are also available for use in the explosion-protected area II 2G EEx d IIC T6 and the medical sector. Prefabricated foot switches are available on request. Additional functions
Features
Latched switching Y After the first pedal actuation, the contact setting is maintained after the pedal is released. Only after a subsequent actuation is the contact reset again (bistable).
Safety Guard (UN) Additional to protecting the pedal, the rear of the guard provides further space to accommodate additional elements: – Emergency Stop button – Contactor on DIN rail (as main power switch) – Customer-specific fittings
Pressure point D – Depression to the pressure point: First pair of contacts switched – Depression beyond the pressure point: Second pair of contacts switched (first contacts remain switched)
Type
Pedal 1
Pedal interlock (AT) The pedal can only be depressed after the vertical lever is disengaged with the foot. This prevents unintentional actuation of the footswitch.
Emergency Stop button (NA) Since the foot switch can be operated at some distance from machines and plant, an Emergency Stop button conforming to VDE/DIN is directly available to the operator on the command unit.
Pedal 2
Pedal 3
Pedal-independent addition
SU1Z/UV1 DUN 1NC/2NO safety switching function Safety switching function with pressure point, contact latch, manual disengagement and safety cover (see details below).
F3
SU1Mi RG
F1
–
Switching elements
Additional function
Schalteinsatz
Zusatzfunktion
Schalteinsatz
Zusatzfunktion
Features
F2
–
Switching elements
Additional function
Switching elements
Additional function
Schalteinsatz
Zusatzfunktion
Features
F3
–
Switching elements
Additional function
Switching elements
Additional function
Switching elements
Additional function
Features
FG
–
Switching elements
Additional function
Schalt-
Zusatz-
Schalt-
Zusatz-
1NC/1NO change-over with potentiometer
An integrated potentiometer allows linear control tasks to be performed via a controller, dependant on the pedal position. A micro-switch is also activated, providing electrical isolation at the rest or end position (facility exists for a further micro-switch to duplicate this function).
F1: 1-pedal with / without safety cover (UN) F2: 2-pedal with / without safety cover (UN) F3: 3-pedal with / without safety cover (UN)
Features
Example
Safety foot switch with safety locking and manual disengagement 1. Rest 2. Operation: Pedal pressed as far as the pressure point: the make contacts are closed, the machine is started. 3. Emergency situation: The pedal is depressed beyond the resistance of the pressure point, the NC contact is interrupted and latched, (machine is stopped). Even when the pedal is released the contact is latched and remains in the off position. This reliably prevents an uncontrolled restart of the moving machine parts.
4. Disengagement: After the hazardous situation has been remedied, manual disengagement (pushbutton on the side of the housing) releases the contacts; the machine can then be initiated again by pressing the pedal as in pos. 2.
F3
– U1
SU1 Y
U2 D
UN