Sigma II User’s Manual
Chapter 9: Inspection, Maintenance, and Troubleshooting
9-22
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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 Output
ALM Output
ALO1
ALO2
ALO3
OFF
OFF
OFF
OFF
Cause of the Problem
Solution
A
Malfunctioning absolute encoder.
Replace servomotor if error occurs
frequently.
B
Operational error in encoder caused
by external noise
Check and correct wiring around the
encoder, (grounding of servomotor,
separation of encoder and power
cables, insertion of rotoidal cores
onto cables to reduce noise, etc.)
A
B
At power ON.
During servomotor
operation.
