Cause : Internal error 1 (Rating) comes when a component is not compatible with the hardware configuration, the error [Internal Error 1] INF1 is triggered. This means that the power board rating is not valid.

"INF1" Internal error 1 fault in Schneider drive indicate "rating Error". This means the drive has detected a mismatch between its internal configuration and the actual hardware it's working with.

1. Check drive hardware.
2. Check ration of drive.