Speed monitoring

What does F-08 mean?

The inverter's current controller is working at its set limit due to conditions like mechanical overload, phase failure in the mains or motor, or exceeding the maximum speed for VFC operating modes. This fault indicates the drive is struggling to maintain its commanded speed or torque. Unresolved, it can lead to motor and inverter overheating.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Adjust the current limitation parameters and extend deceleration ramp times (e.g., P501).

2. 4

   If operating in VFC mode, reduce the maximum speed setting if the motor is overspeeding.