Danfoss · VLT AutomationDrive FC 301/302
An internal issue or critical incompatibility necessitates the replacement of the control card. This fault indicates a problem beyond typical troubleshooting, often related to hardware failure.
Click steps to track your progress.
Record all existing drive parameters for backup, if accessible via LCP or communication port.
Confirm the exact part number and revision of the control card that needs replacement.
Order a new control card with the correct part number and hardware revision.
Safely remove all power from the drive (L1, L2, L3 mains and control power) before replacing the card.
Install the new control card, then load backed-up parameters and the correct firmware version.
Perform a functional test of the drive and connected motor after card replacement.