Brake transistor alarm detection

What does Br. Cct. Fault mean?

A fault has occurred in the brake transistor circuit, leading to the inverter output stopping. This typically happens when the regenerative energy from the motor is excessively large, exceeding the capacity of the brake transistor or optional brake resistor. This protective function is only active when an optional brake resistor is connected.

• Excessive regenerative energy generated by the motor, overloading the brake transistor.
• Improper braking duty cycle (e.g., too frequent or too long braking periods).
• Malfunction of the optional brake resistor or its connections.

Click steps to track your progress.

1. 1

   Evaluate the braking duty of the application and ensure it is within the specified limits for the inverter and optional brake resistor.

2. 2

   If the issue persists despite adjusting braking duty, contact a sales representative for potential inverter replacement or system re-evaluation.