GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 353)

DV-300 Adjustable Speed Drives
——— TROUBLESHOOTING ———
8
3
FAILURE ALARM POSSIBLE CAUSES
Overcurrent
Overcurrent in the motor circuit
Short-circuit or ground fault at the output of the converter
Current regulator optimized incorrectly
Overcurrent thr parameter too low
Field loss
Too low field current
The field regulation is blocked
The conductors in the field circuit are interrupted
Field fuses are active
Delta frequency Excessive difference between the frequency of the three-phase power supply input and
the value measured the instant this is guaranteed.
Delta freq thres parameter set too low.
Check that the frequency of the three-phase power supply remains constant or in any
case within the threshold limit throughout drive operation.
Speed fbk loss
No speed feedback signal
The conductors of the feedback signal are interrupted
One or several encoder channels are missing (conductor interruption, no encoder power
supply)
Opt2 failure
Failure on the option card 2
Try a RESET. If you are still unsuccessful: probable internal fault. Contact your sales
office
Bus loss
Failure in the Bus connection (only with interface Bus option card)
Check the Bus connection
EMC compatibility problems
Try a RESET. If you are still unsuccessful: probable internal fault. Contact your sales
office
Hw opt1 failure
Failure on the option card 1
Try a RESET. If you are still unsuccessful: probable internal fault. Contact your
sales office