MOTOR PHASE

What does FF56 mean?

One of the motor phases has been lost, indicating a fault within the motor, the motor cable, an external thermal relay (if used), or an internal drive fault. This fault is associated with bit 15 of Fault Word 2 (3.06 FW 2) and can be configured via Fault Function 30.16.

• Fault detected in one or more phases of the motor power supply.
• Loose or broken motor connection.
• Internal motor winding issue.
• Inverter output phase failure.

Click steps to track your progress.

1. 1

   Inspect the motor and motor cable for physical damage, loose connections, or signs of overheating.

2. 2

   If a thermal relay is used, check its trip status and ensure it is functioning correctly.

3. 3

   Verify the setting of parameter 30.16 (Motor Phase Loss function).

4. 4

   As a diagnostic step, temporarily disable the `Motor Phase Loss` protection in parameter 30.16 if troubleshooting demands it.