Input Phase Loss Circuit Error

What does InFA mean?

A detected error in the input phase loss circuit. This indicates a problem with the drive's internal sensing of the incoming mains voltage phases, which is crucial for detecting power supply issues. This fault may falsely indicate a phase loss or miss a real one, impacting drive protection.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Power cycle the drive to reset the internal sensing logic.

2. 4

   If the fault persists, it indicates an internal hardware issue with the input phase detection circuit, requiring repair or replacement.