Brake chopper overcurrent

What does F4.1 mean?

An overcurrent condition has been detected in the brake chopper circuit. This is typically caused by excessive regenerative power during deceleration, a short circuit in the braking resistor circuit, or an incorrectly sized braking resistor. Failure to resolve risks damage to the brake chopper or resistor.

Complete Troubleshooting Guide

1. 1

   Increase the deceleration ramp times in the drive parameters to reduce the amount of regenerative power.

2. 2

   Inspect the supply cable to the braking resistor for any short circuits, damage, or loose connections.

3. 3

   Verify that the technical data (resistance value, power rating) of the braking resistor matches the drive's requirements.