Fault 4 Brake chopper

Subfault: 4.1

Description: Brake chopper overcurrent

 

Response: Disconnect storage unit

Cause

Measure

Excessive regenerative power.

Extend the deceleration ramps.

Short circuit detected in braking resistor circuit.

Check the supply cable to the braking resistor.

The braking resistor impedance is too low.

Check the technical data of the braking resistor.