Omron OMNUC W Series Manual page 243

9 Troubleshooting
9
A.CA
A.CA: Encoder Parameter Error
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON OFF
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
At power ON
Cause
A
Encoder is defective.
B The Servo Driver is defective.
A.CB
A.CB: Encoder Data Error
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON OFF
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
At power ON
Cause
A Encoder wiring incorrect or disconnected.
B Encoder is defective.
C
The Servo Driver is defective.
9-32
ALM Output
ALO3
ON OFF
A, B
Replace the Servomotor.
Replace the Servo Driver.
ALM Output
ALO3
ON OFF
A, B
Check wiring and connectors at encoder.
Replace the Servomotor.
Replace the Servo Driver.
Remedy
Remedy