User's Manual

TRAIN CHIEF® II LRCS w/Lightweight OCU OWNER’S MANUAL
95-00-0-xxx Rev 000 7-10 Control Chief Corporation
Electrical and Pneumatic System Troubleshooting
Refer to reference drawing E-XXXX-03-1 for component location and part numbers. (E-XXXX is
your system number)
WARNING: Before attempting to service any pneumatic components, insure the
air system has been vented to atmosphere (zero pressure in air lines).
CAUTION: Contaminants in the air system can significantly reduce the
component life and performance of the remote control pneumatics. Therefore, to
insure long component life and optimum system performance it is essential to
implement a preventive maintenance schedule for the locomotive pneumatics
system. This should include draining water from the main reservoir tank and
replacing filter cartridges.
NOTE: FAILURE TO MAINTAIN THE AIR SYSTEM WILL VOID THE WARRANTY
The remote control pneumatic system can only perform as well as the air system is
maintained.
Description
The primary controller used in the system is an Allen-Bradley SLC 500™ PLC. A correct version
of the program in the processor will be required. The electrical outputs should be checked using
system schematics. This procedure is intended to be used to troubleshoot all electrical outputs
and pneumatic outputs.
Preliminary Inspection
Before troubleshooting, verify the system wiring and pneumatic piping matches the system
schematics.
Test Equipment
Voltmeter – for testing outputs and troubleshooting as required.
Notes: Most Allen-Bradley modules have removable terminal strips so unwiring is not necessary
in order to change a module.
Procedure
¾ Verify main battery voltage with a voltmeter. Apply power to the system.
¾ Verify main battery voltage input at input fuses on the EMI filter module. Check the output of
the EMI filter module at the terminal strip.
¾ Verify main battery voltage input (from the EMI filter module) at +64L and -64L input fuses
on the locomotive interface mounted in the locomotive interface cabinet.
¾ Verify +24VDC input to the SLC 500™ power supply module 1746-P3.
¾ Verify RED LED is ON located on the front panel of the power supply.
¾ Verify the RUN LED is ON located on the processor module.
¾ Activate the OCU (pushbutton switch ON) and establish communication (press the HORN
button).