FAL fault Emotron VSB Drive indicates Module protection. This means the inverter’s internal hardware protection for the power module has been triggered due to abnormal operating conditions.
Possible Causes:
1: Output short circuit (phase-to-phase short circuit or output ground short circuit).
2: Fan damaged or air duct blocked.
3: Direct connection of inverter module.
4: Switching power supply damaged.
5: Control board abnormal.
6: Ambient temperature is too high.
7: Loose connection of control board.
8: Overvoltage or overcurrent.
Solutions:
1: Check motor connection and output ground impedance.
2: Clear the air duct or replace the fan.
3: Seek services.
4: Seek services.
5: Seek services.
6: Reduce ambient temperature.
7: Pull out and reinsert the cables of control board.
8: Handle it with the solutions of overvoltage or overcurrent.