Veris Technologies Precision Rate Controller - Operation Manual - Manual (Page 23)

Pub.# OM17-PRC
8-1
Troubleshooting
Drive will not rotate: (see Troubleshooting flow chart and electronics
overview)
1. Check cab console:
1.1) No power to cab console
– check with voltmeter.
1.2) Upper line (set) is visible but no lower line (out rate and speed) on display:
move to Communication troubleshooting below
1.3) 1 or 10 amp fuse on power cable may be blown.
d) Engage button is not on
– check to see if green indicator light is on.
1.4) Use Cab Console Power Tester (part # 27857) to check power out of cab
console. Install tester on round 7 pin power/com cable from cab console. Turn
drive on. Green LED shows power to external controller. Red LED shows power
to solenoid. If LED lights are not lit, double-check power and connections;
replace cab console if needed.
2. Check Communication between cab console and drive:
2.1) Check to see if power and communication cable (main harness) is properly
connected.
2.2) If no lower line on cab console appears (speed and output rate), and drive
will not rotate in calibration mode, use Cable Continuity Tester (part #27859) to
test power and communication to external controller. (WARNING: TO PREVENT
DAMAGE TO COMPONENTS, DISCONNECT POWER/COM CABLE FROM
CAB CONSOLE AND EXTERNAL CONTROLLER BEFORE INSTALLING THIS
TESTER; Install 4-PIN TEST PLUG on end of 4 pin power/com cable before
powering the Cable Continuity Tester
—remove before reattaching power/com
cable directly to cab console.
2.3) (If Cable Continuity Tester shows power is getting to external controller, turn
power off and remove Cable Continuity Tester and 4 pin test plug from ends of
power/com cable. Reattach power/com cable to cab console and external
controller)
2.4) If power/com cable tester shows power and communication is reaching
external controller from cab console, and no lower line appears on cab console,
replace chip or external controller. Call Service Department
2.5) If Cable Continuity Tester (part #27859) isn’t available, check cable with
voltmeter at connection at control module.
3. Test Relay inside external controller
3.1) Use Relay Output Tester (part # 27860) to test relay inside external
controller. Install tester to weather-pak solenoid connector from external
controller. With tractor engine off, start drive calibration function. Auditory alarm
should buzz for 1.5 seconds when drive is engaged in calibration mode. If alarm
does not sound, relay or external controller may need to be replaced. Call
Service Department.