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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

InF2

Unknown or Incompatible Power Board

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does InF2 mean?

The drive has detected an unknown or incompatible power board. This means the control section cannot properly interface with the power section, leading to a complete failure to operate. This is a critical internal hardware fault.

Common Causes

  • The installed power board is not recognized or is incompatible with the drive.
  • Incorrect power board for the drive series installed.
  • Damaged communication traces between the control and power board.
  • Firmware mismatch between control and power board.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Power cycle the drive.

  2. 2

    Verify that the power board is correctly installed and securely connected to the control board.

  3. 3

    If the fault persists, it indicates an internal hardware fault, likely requiring replacement of the power board or the entire drive unit.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

ASFAngle ErrorCFFIncorrect ConfigurationCFI2Configuration Transfer Error
Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive
View Official PDFSearch more codes in this manual