FF56

MOTOR PHASE

Allen-Bradley · ABB ACS800 Standard Firmware

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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

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

  2. 4

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

Source: ABB ACS800 Standard Firmware
Open Manual (Page 244)