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SEVCON CONTROLLERS

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SEVCON - motor controller
MICROMOS & SC1000 error codes

Green LED Description
OFF No power-up
2 FLASHES Wrong start procedure - invalid sequence
3 FLASHES Motor output short-circuit to B-
4 FLASHES Motor output short-circuit to B+
5 FLASHES Motor contactor circuit open
6 FLASHES Accelerator fault
7 FLASHES Battery voltage fault
8 FLASHES Thermal cutback
9 FLASHES Battery voltage below 18V

SEVCON - motor controller
MOS90 error codes

Green LED Description
OFF No power-up or controller internal error
2 FLASHES Wrong start procedure - invalid sequence
3 FLASHES Motor output short-circuit to B- or bypass contactor welded
4 FLASHES Direction contactor welded
5 FLASHES Motor contactor circuit open or direction contactor not close
6 FLASHES Accelerator fault
7 FLASHES Battery voltage fault
8 FLASHES Thermal cutback

SEVCON - motor controller
MILLIPAK 4QPM error codes

Green LED Description
ON No fault
OFF Controller internal error or no keyswitch voltage
1 FLASH Personality out of range
2 FLASHES Illegal start condition
3 FLASHES Motor MOSFET short circuit
4 FLASHES Contactor fault or motor open circuit
6 FLASHES Accelerator wire off fault
7 FLASHES Too low or too high battery voltage or BDI cutout operating
8 FLASHES Over temperature or timed cutback
10 FLASHES Power-up Autozero function has not yet been completed

SEVCON - motor controller
POWERPAK error codes

Green LED Description
ON No fault
OFF No power-up, internal fault
1 FLASH Personality out of range
2 FLASHES Invalid start procedure - sequence error
3 FLASHES Motor or mosfet short circuit
4 FLASHES Motor open circuit or contactor fault
6 FLASHES Accelerator fault, Speed probe fault
7 FLASHES Battery voltage fault, BDI cutout
8 FLASHES Thermal cutback
9 FLASHES Contactor coil open circuit
12 FLASHES CAN-bus fault

SEVCON - motor controller
SC2000 error codes

Green LED Description
ON No fault
OFF No power-up, internal fault
1 FLASH Personality out of range, CRC fault
2 FLASHES Invalid start procedure - sequence error, steer switch sequence, two directions together
3 FLASHES Mosfet short circuit or bypass contactor welded
4 FLASHES Contactor circuit open or shorted
6 FLASHES Potentiometer fault (accelerator, speed probe, steer pot)
7 FLASHES Battery voltage fault, BDI cutout
8 FLASHES Thermal cutback, heatsink too hot, over 75 deg.C
9 FLASHES Contactor coil short circuit

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