Yaskawa MP940 - Manual (Page 390)

10.2 Troubleshooting
10-23
10
„ A.C8
A.C8: Absolute Encoder Clear Error and Multi-turn Limit Setting Error
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
„ A.C9
A.C9: Encoder Communications Error
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 OFF ON OFF
Cause Remedy
A Encoder defective. Replace servomotor.
B SERVOPACK defective. Replace SERVOPACK.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
ON OFF ON OFF
Cause Remedy
A Encoder wiring incorrect or discon-
nected Check wiring and connectors at
encoder.
B Encoder defective. Replace servomotor.
C SERVOPACK defective. Replace SERVOPACK.
A,B A,B At power ON When resetting multi-turn
clear encoder alarm
A,B,C A,B,C
During servomotor
operation
At power ON