Cause : Unknown drive rating comes when there's a mismatch between the power card and stored card versions. The cause of this fault is "power card" and "stored card" versions different.

"F002" fault in Schneider ATV310 drive indicate Unknown drive rating error. This means the installed power card might not be compatible with the drive's control card.

Follow these steps to correct fault:

1. Verify Power Card Compatibility: Ensure that the installed power card is the correct one for your drive model. Refer to the drive's documentation for specific compatibility details.
2. Check Software Versions: Use the drive's diagnostic tools to check the software versions of both the power and control cards. If there's a mismatch, update the software to compatible versions.
3. Inspect Hardware: Visually inspect the power and control cards for any signs of damage or abnormalities.