What to do if I have BrakingTransistor Overload Fault in YASKAWA GA800?
- BBryan BowmanAug 22, 2025
If a YASKAWA DC Drive shows a Braking Transistor Overload Fault, it could be due to a high duty cycle of the braking transistor. Consider these solutions: * Install a braking unit (CDBR-series). * Install a regenerative converter. * Increase the deceleration time. Another cause could be enabling the protective function for the braking transistor when you have a regenerative converter. In this case, set L8-55 = 0 [Internal DB TransistorProtection = Disable]. Finally, the braking transistor in the drive might be broken, requiring you to replace the entire drive.