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
Assess the operating environment for sources of electromagnetic interference (EMI) and ensure proper grounding and shielding of the drive controller.
- 2
Verify that the 'local control' option was not plugged in or removed while the drive controller was actively powered.
- 3
If troubleshooting steps do not resolve the fault, the drive controller unit must be replaced.