Cause : Converter fan current comes when the converter fan itself may be faulty, preventing it from operating correctly. A fault in the converter fan current can lead to overheating and potential damage to the drive.

F511 Converter fan current fault in ABB DCS800 drive indicates a fault with the converter fan current. This means there is an issue with the fan.

1. Check converter fan supply voltage.
2. Check converter fan direction of rotation.
3. Check converter fan components.
4. Check converter cooling air inlet (e.g. filter).
5. Check converter cooling air outlet.