Yaskawa Large Capacity Sigma II Series - Manual (Page 348)

8.2 Troubleshooting
8-9
8
„ A.30
A.30: Regenerative Error Detected
Display and Outputs
Note: OFF:Output transistor is OFF (alarm state). ON: Output transistor is
ON.
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs ALM Output
ALO1 ALO2 ALO3
ON ON OFF OFF
Cause Remedy
A Regenerative transistor is abnormal. Replace SERVOPACK.
B Disconnection of the regenerative resistor. Replace SERVOPACK or regenerative
resistor.
C Regenerative Unit disconnected (for an
external regenerative resistor). Check wiring of the external regenerative
resistor.
D SERVOPACK defective. Replace SERVOPACK.
A, B
A, B, C
D
During servomotor
operation
Occurred approximately 1
second after the main
circuit power ON.
Occurred when the
control power turned ON