Ingersoll-Rand INTELLISYS SSR Series - Stepper Limit Switch Testing; Limit Board Voltage Measurements; Controller, Cable, and Switch Integrity

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MEASURE THE VOLTAGE ON THE RED AND BLACK WIRE OF THE LIMIT BOARD
SG INTELLISYS CONTROLLER:
IS THE VOLTAGE 2VDC?
= BOTH LIMIT SWITCHES ARE ENGAGED AT THE SAME TIME.
ORIGINAL INTELLISYS CONTROLLER:
IS THE VOLTAGE 5VDC?
NO. CHECK FOR PROBLEM
WITH RIBBON CABLES OR
CONTROLLER.
NO. POTENTIAL PROBLEM WITH
CONTROLLER. MOVE RED WIRE TO
TERMINAL 31 ON P3 AND MEASURE
VOLTAGE AGAIN.
IS THE VOLTAGE 2VDC?
NO. POTENTIAL BAD
CONTROLLER, LIMIT
BOARD OR WIRING.
YES. IS ALARM
STILL OCURRING?
MEASURE VOLTAGE BETWEEN
WHITE AND BLACK WIRE.
MEASURE VOLTAGE BETWEEN
GREEN AND BLACK WIRE.
ARE BOTH MEASUREMENTS
5 VDC?
MEASURE VOLTAGE BETWEEN
WHITE AND BLACK WIRE.
MEASURE VOLTAGE BETWEEN
GREEN AND BLACK WIRE.
ARE BOTH MEASUREMENTS
10-12 VDC?
NO. POTENTIAL PROBLEM WITH
RIBBON CABLE OR CONTROLLER.
YES. CHECK FOR DIRT
ON LIMIT SWITCHES OR
BAD LIMIT BOARD.
NO. POTENTIAL PROBLEM WITH
RIBBON CABLE OR CONTROLLER.
NO. THEN YOU ARE FINISHED
YES
ORIG, SG: STEPPER LIMIT SWITCH