InF3

Internal Serial Link Interruption

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does InF3 mean?

An interruption in the internal serial link communication. This refers to communication between internal sub-components of the drive (e.g., control board and I/O board). This critical internal fault can lead to unpredictable behavior or complete operational failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If the fault persists, it suggests an internal hardware issue on one of the boards, possibly requiring replacement.

Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive
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