Power unit: Braking chopper overcurrent

What does F30055 mean?

An overcurrent condition has been detected in the braking chopper circuit. This signifies excessive current flow, often due to a short-circuited braking resistor or an improperly sized external resistor. An overcurrent can severely damage the braking chopper or resistor, leading to a complete loss of braking capability, uncontrolled deceleration, or even a fire hazard if sustained.