DC overvoltage

What does 7 mean?

If the intermediate circuit voltage exceeds its critical limit, the frequency converter will trip after a time delay. This fault often occurs due to regenerative braking, sudden load changes, or issues with the mains supply. Repeated overvoltage trips can damage the drive's power components.

Complete Troubleshooting Guide

1. 1

   Connect a brake resistor or increase the ramp-down time to dissipate regenerative energy during deceleration.

2. 2

   Adjust the ramp type or activate brake functions in parameter 2-10 to manage deceleration more effectively.

3. 3

   Increase the trip delay at inverter fault (14-26) or enable kinetic back-up (14-10) to ride through transient overvoltage conditions or power sags.