12

Brake Chopper Supervision Fault

Vacon · NX Liquid-Cooled Drive

What does 12 mean?

This fault indicates a problem with the brake chopper system. Possible causes include the absence of a brake resistor, a broken or open-circuited brake resistor, or a failure of the brake chopper circuitry itself.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the cabling between the drive and the brake resistor for any damage or loose connections.

Source: Vacon NX Liquid-Cooled Drive
Open Manual (Page 152)