DC overvoltage

What does WARNING/ALARM 7 mean?

The DC-link voltage inside the frequency converter has exceeded its predefined limit. This often occurs during deceleration of high inertia loads, where regenerative energy is fed back into the DC link, and can lead to component damage or drive trips if not controlled.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Enable or fine-tune the overvoltage control function in parameter 2-17 to actively manage regenerative energy and prevent trips.