11

Output phase supervision

Vacon · NX All-in-One Application

What does 11 mean?

The drive's current measurement system detects no current flowing in one of the motor phases. This typically signifies an open circuit in the motor's power path, potentially due to a disconnected motor cable, a break in the motor winding, or a faulty connection at the motor or drive terminals. This can lead to the motor operating unevenly or failing to run.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Measure the insulation resistance between each motor phase (U, V, W) and motor ground using a megger at 500VDC — expect a reading greater than 1 MΩ.

Source: Vacon NX All-in-One Application
Open Manual (Page 373)