DC overvoltage

What does 7 mean?

If the DC-link voltage exceeds a specific limit, the frequency converter will trip after a certain time delay. This typically occurs due to regenerative energy from the motor during deceleration or an issue with the mains supply.

Complete Troubleshooting Guide

1. 1

   Connect a brake resistor if not already present, or verify the existing brake resistor is correctly sized and functioning.

2. 2

   Extend the ramp-down time to reduce the rate of regenerative energy feedback.

3. 3

   Activate or adjust functions in parameter 2-10 Brake Function.

4. 4

   If the alarm/warning occurs during a power sag, enable kinetic back-up via parameter 14-10 Mains Failure.