Danfoss · VLT AutomationDrive FC 301/302
The USB port buffer has overflowed, indicating that data is being received faster than it can be processed. This can lead to loss of communication or corrupted data for USB connections.
Click steps to track your progress.
Reduce the data transfer rate or message frequency from the connected PC software (e.g., MCT 10).
Verify the integrity of the USB cable (A-B type) and try a different, shorter cable (max 3m length recommended).
Ensure the drive's USB drivers are correctly installed and updated on the connected PC.
Update the drive firmware to the latest available version to address potential USB stack bugs.
Disconnect and reconnect the USB cable, then power cycle the drive if the fault persists.