HF damping module: Damping voltage too high

What does 237502 mean?

This alarm indicates that the damping voltage in the HF damping module has exceeded its alarm threshold. This can happen if a motor harmonic with high amplitude coincides with the resonance frequency of the output filter or if the current controller excessively excites the output filter's resonance. If the damping voltage continues to rise to an unacceptably high level, it will escalate to fault F37002. High damping voltage can lead to component stress, reduced lifespan, and potential failure of the damping module or related components.

Complete Troubleshooting Guide

1. 1

   Reduce the motor power when operating near the fault-generating frequency to avoid coinciding with the output filter's resonance.

2. 2

   Check the current controller settings and adapt them as required to prevent excessive excitation of the output filter resonance. Tune controller gains if necessary.

3. 3

   If the issue persists and is linked to specific motor harmonics, consider using an alternative motor with different harmonic characteristics.