Fault 4 Brake chopper
Subfault: 4.1 Description: Brake chopper overcurrent | ||
|---|---|---|
| Response: Output stage inhibit + line contactor unchanged + module bus response "Critical" | |
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 + open line contactor + module bus response "Critical" | |
Cause | Measure | |
Output stage of brake chopper defective. | Replace the defective brake chopper. | |
