F071 fault in WEG CFW900 Drive indicates an Overcurrent at the Output. This means the inverter supplied excessive current, often due to high load inertia, aggressive acceleration, or a mechanical bind.
Cause:
- Load inertia too high or deceleration ramp set too fast.
- Setting parameter C3.4.1 or C3.3.5.1.1 is too high.
Remedy:
Increase deceleration ramp time or reduce load inertia. Check values in parameters C3.4.1 or C3.3.5.1.1.
