Cause: Motor 4 overload comes when the motor is drawing excessive current for an extended period, exceeding its nominal operating limits. The VFD trips to protect the motor from overheating and damage.

0ln fault in fuji FRENIC MEGA drive indicates an Motor 4 overload. This means the drive has detected that the motor has been drawing excessive current for too long, indicating an overload condition.

• Run the motor unloaded — if fault doesn’t occur, the problem is on the load side.
• Compare with motor’s nameplate rated current.
• Check motor data in parameter.
• Check for phase imbalance, high resistance connections, or damaged motor windings.