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What can cause an OSF Overvoltage fault on the ATV18 drive?

What is OSF in the ATV18?

Product Line:
Altivar ATV18


Customer had an ATV18 that triggered over voltage fault.

Line over voltage fault.  Overvoltage in steady state or acceleration.
Check line voltage. ATV18???M2, 1-phase: = 240 V +10%
ATV18???M2, 3-phase: =230 V +10%
ATV18???N4: = 460 V +10%
Compare the line voltage as read with a true RMS meter with the mains voltage reading on the drive display.
This fault can be caused if there are high harmonics on the inputs.
Consider the installation of line inductors.

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