9.1 Alarm Displays and Troubleshooting
9-7
9
A.84
A.84: 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 is defective.
Replace the servomotor if the error occurs
frequently.
B
Operational error in encoder caused by exter-
nal noise.
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
At power ON
A
During operation
B
