Brake chopper supervision

What does 12 mean?

The brake chopper supervision has detected an issue, indicating either a missing or broken brake resistor, or a defective brake chopper unit. This fault prevents the drive from effectively dissipating regenerative energy, which can lead to overvoltage faults (Fault 2) during deceleration or when braking heavily.

Complete Troubleshooting Guide

1. 1

   Check the physical presence and condition of the brake resistor.

2. 2

   Inspect all cabling between the drive, the brake chopper, and the brake resistor for damage or loose connections.

3. 3

   Measure the resistance of the brake resistor to ensure it is within specified limits.

4. 4

   If the resistor and cabling are confirmed to be in good condition, contact the distributor, as the brake chopper unit may be defective.