8
Service
Fault table
Operating Instructions – MOVIMOT
®
advanced
144
8.7.3 Fault 4 Brake chopper
Subfault: 4.1
Description: Brake chopper overcurrent
Response: Output stage inhibit
Cause Measure
Excessive regenerative power. Extend the deceleration ramps.
Short circuit detected in braking resistor circuit. Check the supply cable to the braking resistor.
Braking resistance too high. Check the technical data of the braking resistor.
Subfault: 4.2
Description: Brake chopper defective
Response: Output stage inhibit
Cause Measure
Output stage of brake chopper defective. Replace the defective brake chopper.
8.7.4 Fault 6 Line fault
Subfault: 6.1
Description: Line phase failure
Response: Line phase failure
Cause Measure
Missing line phase detected. Check the supply system cable.
DC link voltage periodically too low. Check the configuration of the supply system.
Inadequate line voltage quality. Check supply (fuses, contactor).
8.7.5 Fault 7 DC link
Subfault: 7.1
Description: DC link overvoltage
Response: Output stage inhibit
Cause Measure
Maximum permitted DC link voltage limit ex-
ceeded and output stage inhibited by hardware.
– Extend the deceleration ramps.
– Check supply cable to the braking resistor.
– Check the technical data of the braking resistor.
25891936/EN – 05/2020
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