Internal Braking Transistor Fault

What does Braking Transistor Fault mean?

The internal braking transistor within the drive, which is responsible for dissipating regenerative energy from the motor, has malfunctioned or failed. This is a hardware fault within the drive that can prevent proper braking, lead to DC overvoltage faults, or cause unstable operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the fault reoccurs after power cycling and checking operating conditions, the drive unit must be replaced as it indicates a component failure.