InF

Internal Fault

Schneider Electric · ALTIVAR 28 Variable Speed Drive

What does InF mean?

This fault indicates an internal malfunction within the drive controller, potentially stemming from environmental electromagnetic interference or an improper connection/disconnection of the local control option while powered. Ignoring this can result in total drive failure and loss of control.

Complete Troubleshooting Guide

  1. 1

    Assess the operating environment for sources of electromagnetic interference (EMI) and ensure proper grounding and shielding of the drive controller.

  2. 2

    Verify that the 'local control' option was not plugged in or removed while the drive controller was actively powered.

  3. 3

    If troubleshooting steps do not resolve the fault, the drive controller unit must be replaced.