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.

Common Causes

  • The drive's industrialization zone setting is invalid or not supported.
  • Incorrect value entered in parameter P1-05 (Industrialization Zone).
  • Attempt to operate the drive in a region with incompatible safety standards.
  • Firmware configured for a different geographical market.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a factory reset to restore default regional settings if applicable.

  2. 2

    Contact manufacturer support, as this may indicate critical internal data corruption or unauthorized modification.

  3. 3

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

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Verified technical data. Last updated: March 2026

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Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive