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What causes a flashing P on the ATV21 and ATV212 drives?

Issue:
Flashing P on the ATV21 and ATV212 drives

Product Line:
Altivar ATV21, ATV212

Environment:
All

Cause:
Pre-Alarm P

Resolution:
The flashing P means the DC bus is in pre alarm or the drive controller is approaching an overvoltage fault due to a high supply line, regenerative motor braking or power disturbance.

Press MODE button until you see AUF, arrow down to F---, press ENT to the extended menu F codes.
F626 you can change the overvoltage threshold setting to 150%.
F305 you can disable the overvoltage or change when the drive protects against overvoltage.