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.
Complete Troubleshooting Guide
- 1
Power cycle the drive to attempt re-establishment of the internal link.
- 2
Check for any visible damage or loose connections between internal boards and ribbon cables.
- 3
If the fault persists, it suggests an internal hardware issue on one of the boards, possibly requiring replacement.