Brake chopper supervision

What does 12 mean?

This fault indicates an issue with the brake chopper circuit, possibly due to a missing or broken brake resistor, or a failure of the brake chopper component itself. A malfunctioning brake chopper can lead to overvoltage faults during deceleration or prevent effective braking.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the cabling between the drive and the brake resistor.

2. 4

   If the resistor and cabling are confirmed good, the brake chopper itself may be faulty – contact the distributor.