Brake chopper
SEW Eurodrive · MCBSM
What does F-04 mean?
This fault indicates an issue with the braking resistor circuit, such as excessive regenerative power, an interrupted or short-circuited braking resistor, or incorrect resistor value. It can also be triggered by a defective brake chopper or a ground fault in the circuit. Failure to address this can lead to DC link overvoltage or inadequate braking performance.
Complete Troubleshooting Guide
- 1
Extend the deceleration ramps in the inverter parameters to reduce regenerative power.
- 2
Check the wiring and supply cable to the braking resistor for continuity and short circuits.
- 3
Verify the braking resistor's resistance against its technical specifications; replace if incorrect.
- 4
Eliminate any ground faults detected within the braking resistor circuit.
- 5
If all external components are confirmed functional, the internal brake chopper might be defective, necessitating inverter replacement.