Cause: Internal Error 6 comes when the option module installed in the drive is not recognized or the removable control terminal modules (if existing) are not present or not recognized.

"inF6" Internal Error 6 fault in Schneider ATV950 drive indicate the option module installed in the drive is not recognized. This means drive unable to identify the option module.

1. Verify the catalog number and compatibility of the option module.
2. Plug the removable control terminal modules after the drive has been switched off.