Motor wiring error:
- Phase and ground conductor
switched. -> Check if the ground conductor PE in the motor cable on the X5
plug is connected with motor phase U, V or W.
- Short circuit in the motor
cable. Short circuit between two phases, ground PE and phase or shield and
phase. -> Check the resistance between U-V, V-W, W-U, U-PE, V-PE, W-PE,
U-shield, V-shield and W-shield.