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Starter enclosure ........................................................... 5
Fig. 26: Starter enclosure
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Starter enclosure
The starter enclosure, located on the left side of the machine, houses the primary electrical control components.
WARNING! Before removing the cover from the starter enclosure and attempting any maintenance or troubleshooting on the machine, the main power must be disconnected and locked and tagged out at the main power center.
There are operational controls located on the front of the starter enclosure (Fig. 26). For control descriptions, see the Controls and Indicators section in this chapter.
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1. “MAN/OFF/AUTO” 2. “TRAM/OFF/CONV” 3. “FWD CONV/OFF/REV CONV” 4. PLC display 5. “15A CB RESET” 6. “PICK BRK STOP” 7. “E-STOP” 8. “ACKNOWLEDGE ALARMS” 9. “CONV START” 10. “START BREAKER” 11. Circuit breaker reset lever
Fig. 27: Swing panel, front side Swing panel - front side
The swing panel (Fig. 27) is accessed by opening the cover on the enclosure. Immediately adjacent to the swing panel is the main circuit breaker, CB1, for the feeder breaker.
Note that component locations are typical. Always consult the parts book for your machine to verify locations.
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1. Power Supply 2. Analog input module 3. Analog output module 4. Input module #1 5. Input module #2 6. Output module 7. Amplifier card 1 8. Amplifier card 2 9. IS Relay 10. AC/DC converter #1 11. AC/DC converter #2 12. AC/DC converter #3 13. AC/DC converter #4 14. SR 15. MCR 16. CRWS 17. CR1 18. CR2 19. CRR 20. SSR 21. R1A 22. Ethernet switch 23. TAC monitor
power supply
analog input module
analog output module
input module #1
input module #2
output module
amplifier boards
IS relay
AC/DC converter #1
AC/DC converter #2
AC/DC converter #3
AC/DC converter #4
MCR
SR
CRWS
CR1 and CR2
CRR
SSR
R1A
Ethernet switch
TAC monitor
The power unit houses the system processor for the machine control system.
The analog input module receives inputs from the current transducer.
The analog output module sends a signal to the amplifier boards.
Input module #1 is for the 120V inputs (selector switches, push buttons, etc.).
Input module #2 is an analog input module for the current transducer, pressure transducer, vacuum transducer, and TAC monitor.
The analog output module sends a signal to the amplifier boards.
The electronic amplifier boards drive the conveyor speed solenoids.
The IS relay is the intrinsically safe relay for the panic bars.
AC/DC converter #1 is the 120VAC/24VDC power supply for the panel view display.
AC/DC converter #2 is the 120VAC/24VDC power supply for the conveyor and tram forward solenoids, two pressure transducers, and the vacuum transducer.
AC/DC converter #3 is the 120VAC/24VDC power supply for the reverse tram solenoids.
AC/DC converter #4 is the 120VAC/24VDC power supply for the forward and reverse tram solenoids (left and right), the lift solenoids (left and right) and tilt solenoids (up and down).
MCR is the master control relay. This relay receives input from the emergency stop button located on the starter enclosure, and the remote control.
SR is the safety relay for the panic bar.
CRWS is the water solenoid relay.
CR1 and CR2 are conveyor forward relays.
CRR is the conveyor reverse relay.
SSR is the strobe/siren relay.
R1A is the radio remote relay.
The Ethernet switch provides access for programming.
The TAC monitor picks up the conveyor shaft and pick break speeds and sends a signal to the PLC.
Back panel
The back panel (Fig. 28) is accessed by removing the swing panel retaining bolt located in the upper left hand corner of the swing panel and swinging the panel out. Note that component locations are typical. Always consult the parts book for your machine to verify locations.
Fig. 28: Back panel, typical
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“T1”
“OL1”
“M1”
fuse
current transducer
current transformer
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1. “T1”, control transformer 2. “OL1”, overload 3. “M1”, vacuum contactor 5 6
4. Fuse 5. Current transducer 6. Current transformer (3)
“T1” is the control transformer that reduces the voltage to the control circuit from 575V to 120V.
“OL1” is the overload relay for the pick break motor. If the pick break motor is overloaded, the relay will shutdown the motor.
“M1” is the vacuum contactor for the pick break motor.
The 5A fuse is for the power supply for the display panel.
The current transducer converts the current to a 4 - 20 mA signal that is relayed to the analog input module and is then displayed as full motor current on the PLC display.
300:5 current transformers used to step down the current.
