Speed monitoring fault (n-monitoring)

What does 08 mean?

The speed or current controller is operating at its setting limit, indicating either a mechanical overload, a phase failure in the power supply or motor, or an incorrectly connected/configured encoder. This fault suggests the motor is not behaving as commanded, leading to an immediate shutdown.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the encoder connection for correctness; if applicable, swap A/A and B/B pairs and verify encoder voltage supply.

2. 4

   Inspect the motor cable and the motor itself for any damage, and verify all mains phases are present and balanced.