Manual

46
Curtis PMC 1207/1207A Manual 39
5 — DIAGNOSTICS & TROUBLESHOOTING
Table 2 TROUBLESHOOTING CHART
LED PROGRAMMER
CODE LCD DISPLAY
EXPLANATION POSSIBLE CAUSE
1,2 HW FA I LSAFE hardware fail-safe error 1. Controller defective.
1,3 M- SHORTED M- output shorted 1. M- output shorted to ground.
2. Direction contactor not closing.
3. Direction contactor not closing fast enough.
4. Internal motor short to ground.
1,4 SRO SRO fault 1. Improper sequence of KSI, brake, and
direction inputs.
2. Wrong SRO type selected.
3. Brake or direction switch circuit open.
4. Sequencing delay too short.
2,1 THROTTLE FAULT 1 5kΩ–0 or wiper fault 1. Throttle input wire open.
2. Throttle input wire shorted to ground or B+.
3. Throttle pot defective.
4. Wrong throttle type selected.
2,2 BB WI R I NG CHECK emerg. reverse wiring fault 1. BB wire open.
2. BB check wire open.
2,3 HPD HPD sequencing fault 1. Improper seq. of KSI, brake, throttle inputs.
2. Wrong HPD type selected.
3. Misadjusted throttle pot.
2,4 THROTTLE FAULT 2 Pot Low broken or shorted 1. Pot Low wire open.
2. Pot Low wire shorted.
3. Wrong throttle type selected.
3,1 CONT DRVR OC driver output overcurrent 1. Direction contactor coil shorted.
2. Shunt field shorted.
3,2 DIR CONT WELDED welded direction contactor 1. Direction contactor stuck closed.
3,4 M I SS I NG CONTACTOR missing contactor or shunt 1. Direction contactor coil open.
2. Direction contactor missing.
3. Shunt field open.
4. Wire to shunt or direction contactor open.
4,1 LOW BATTERY VOL TAGE low battery voltage 1. Battery voltage <16 volts.
2. Corroded battery terminal.
3. Loose battery or controller terminal.
4,2 OVERVOL TAGE overvoltage 1. Battery voltage >48V (1207); >33V (1207A).
2. Vehicle operating with charger attached.
4,3 THERMAL CUTBACK over-/under-temp. cutback 1. Temperature >85°C or <-25°C.
2. Excessive load on vehicle.
3. Improper mounting of controller.
4. Operation in extreme environments.