EL
ErrorLib
Brands
||
  1. Home
  2. Schneider Electric
  3. Altivar Machine ATV320 Variable Speed Drive
  4. ILF1
About·Privacy·Terms

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.

ILF1

Internal Link Fault 1

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does ILF1 mean?

Indicates a communication interruption between option card 1 and the drive. This fault code is read-only and persists until the drive is disconnected and reconnected to power. It implies that the functionality of option card 1 is unavailable, potentially impacting external communications or I/O.

Common Causes

  • A specific internal communication path (Link 1) has failed.
  • Defective internal wiring or termination at the connector.
  • Interference on the internal communication bus.
  • Failure of a connected slave device on Link 1.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure option card 1 is properly seated and secured in its slot.

  2. 2

    Inspect the connectors on both the option card and the drive for any physical damage.

  3. 3

    Power cycle the drive to attempt a reset and re-establish internal communication.

  4. 4

    If possible, try swapping option card 1 with a known good card to isolate the issue.

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