DC link overvoltage

What does F07 mean?

The DC link voltage has exceeded its switch-off threshold, typically due to excessive regenerative power from the motor (e.g., during deceleration) when no braking resistor is connected or if deceleration ramps are too short. This can damage the inverter's power stage and other components if sustained.

Complete Troubleshooting Guide

1. 1

   Extend the deceleration ramps manually (P131) to allow for a slower stop and reduce regenerative power.

2. 2

   Consider connecting a braking resistor to the MOVITRAC B unit if regenerative operation is frequent or unavoidable.

3. 3

   Check the incoming line voltage for overvoltage conditions that might contribute to high DC link voltage.