OSF

Mains Overvoltage

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does OSF mean?

An oversupply (mains overvoltage) detected fault. This means the incoming AC supply voltage to the drive has exceeded its safe operating limits. This condition can damage the drive's input stage components and internal DC bus capacitors if not promptly addressed.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Verify that the drive's voltage rating matches the actual supply voltage configuration.

  2. 4

    Consult with power utility or electricians to stabilize the mains supply if overvoltage is persistent.

Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive
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