OSF
Overvoltage (Steady State/Acceleration)
Schneider Electric · ALTIVAR 28 Variable Speed Drive
What does OSF mean?
This fault occurs when the DC bus voltage within the drive controller is too high, either during steady-state operation or acceleration, usually caused by an excessively high incoming line voltage. High DC bus voltage can stress and damage the drive's internal capacitors and power semiconductors.
Source: Schneider Electric ALTIVAR 28 Variable Speed Drive
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