InF4

Invalid Industrialization Zone

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does InF4 mean?

An invalid industrialization zone has been detected. This is a factory-set parameter related to manufacturing origin or regional configuration. Such a fault indicates a deep internal inconsistency or potential tampering, preventing normal operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If firmware was recently updated, ensure the firmware version is correct for the drive's region.

Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive
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