DC link undervoltage

What does 3220 mean?

The DC link voltage within the drive has dropped below its minimum operational threshold. This is typically caused by a loss or dip in the incoming AC supply voltage or an issue with the drive's internal power supply rectification. Continued operation with undervoltage can lead to unstable motor control or drive malfunction.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the capacity of the supply network to handle the drive's load.