Danfoss · VLT AutomationDrive FC 301/302
The hardware of the option card installed in slot C1 is incompatible with the control board hardware. This prevents proper integration and function of the option, requiring a compatible replacement.
Click steps to track your progress.
Power down the drive and remove the option card from slot C1.
Verify the option card's part number against the drive's compatibility matrix in the technical documentation.
Check the option card's connector pins and the control board's slot C1 header for physical damage or bent pins.
Install a known compatible option card with the correct part number and firmware version.
Power up the drive and verify the fault clears and the option card is recognized in parameter 15-00 (Option Card Detected).