DRDY
Servo Amplifier Not Ready
Fanuc · R-30iB Mate + Mate Plus Robot
What does DRDY mean?
The DRDY (Green) LED indicates that the servo amplifier is ready to drive the servo motor. This fault occurs if the LED does not light when the motor is activated, suggesting the servo amplifier is not reaching a ready state to control the motor.
Repair Steps
- 1
Replace the servo amplifier.
Verified technical data. Last updated: March 2026
Source: Fanuc R-30iB Mate + Mate Plus Robot