Sustained Mains Overvoltage

What does OUE mean?

The incoming mains voltage has been continuously above its specified limit for more than 5 seconds. This indicates a persistent problem with the power supply quality, which can stress the drive's input rectifier and DC-bus capacitors. Prolonged exposure to mains overvoltage can lead to premature failure of input stage components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Consider installing surge protection or a line reactor if the mains voltage fluctuations are persistent and cannot be otherwise resolved.