Danfoss · VLT AutomationDrive FC 301/302
A fitted option card is not fully operational or compatible with the present control card hardware or software version. This incompatibility prevents the drive from functioning correctly with the installed option.
Click steps to track your progress.
Power down the drive and physically remove all option cards from their slots.
Power up the drive; if the fault clears, then an option card is the cause.
Identify the part number and firmware version of the installed option card(s) and the main control card.
Compare the option card compatibility matrix in the drive's manual with the installed cards' versions.
Update the firmware of the control card or option card to a compatible version using the manufacturer's software tool (e.g., MCT 10).
Ensure parameter 15-00 (Option Card Detected) accurately reflects the installed hardware.