Yaskawa Large Capacity Sigma II Series - Manual (Page 360)

8.2 Troubleshooting
8-21
8
„ A.84
A.84: Absolute Encoder Data Error
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs ALM Output
ALO1 ALO2 ALO3
OFF OFF OFF OFF
Cause Remedy
A Encoder defective. Replace the servomotor if the problem
occurs often.
B Operational error in encoder caused by
external noise. Check and correct wiring around the
encoder (grounding of the servomotor, sep-
aration between the encoder cable and the
servomotor power cable, insertion of toroi-
dal cores onto cables, etc.).
At power ON A During operation B