YASKAWA MECHATROLINK Sigma 2 Series User Manual page 182

A.84
A.84: Encoder Data Error
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
OFF OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
At power ON
Cause
A Encoder is defective.
B Operational error in encoder caused by exter-
nal noise.
9.1 Alarm Displays and Troubleshooting
ALM Output
ALO3
OFF OFF
During operation
A
Replace the servomotor if the error occurs
frequently.
Check and correct wiring around the
encoder as follows:
• Grounding of the servomotor
• Separation between the encoder cable
and the servomotor power cable
• Insertion of toroidal cores onto cables
9-7
B
Remedy
9