Servo Amplifier Internal DB Relay Abnormal

What does SRVO-251 mean?

An abnormality has been detected in the internal DB (Dynamic Braking) relay of the servo amplifier. This indicates a fault within the amplifier's internal circuitry responsible for dynamic braking.

• Internal dynamic braking (DB) relay in the servo amplifier has malfunctioned.
• Overheating of the servo amplifier causing DB relay protection to activate.
• Short circuit within the servo amplifier's braking resistor circuit.
• Power surge or voltage anomaly stressing the DB relay.
• Mechanical failure of the DB relay contacts.

Click steps to track your progress.

1. 1

   Replace the servo amplifier.

2. 2

   Replace the E-stop unit.