F0022 fault in WEG CFW701 Drive indicates a DC Link Overvoltage. This means the internal DC bus voltage has spiked too high, typically caused by rapid deceleration of a heavy load.
Cause:
Too high input voltage, resulting in a DC link voltage higher than the maximum permitted value:
- Ud > 400 V: For 220 / 230 V models (P0296 = 0).
- Ud > 800 V: For 380 / 480 V models (P0296 = 1, 2, 3, or 4).
- Ud > 1000 V: For 500 / 600 V models (P0296 = 5, 6 or 7).
- The inertia of the driven-load is too high or the deceleration time is too short.
- The parameter P0151, P0153, or P0185 setting is too high.
Remedy:
Check incoming supply voltage. Adjust deceleration ramp time or reduce load inertia. Check values in parameters P0151, P0153, or P0185.
