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Sigma II User's Manual
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A.81
A.81: Absolute Encoder Backup Power Supply Error
Display and Outputs
Status and Remedy for Alarm
Cause of the Problem
The following power supplies to the
absolute encoder both failed:
A
• +5V supply
• Battery power
B
Absolute encoder malfunctioned.
C
Circuit board (1PWB) defective.
Alarm Outputs
Alarm Code Output
ALO1
ALO2
OFF
OFF
Note:
OFF:
Output transistor is OFF (alarm state).
At power ON.
When parameter
Pn002.2 = 0 or 2
When parameter
Pn002.2 = 1
Chapter 9: Inspection, Maintenance, and Troubleshooting
ALM Output
ALO3
OFF
OFF
A, B, C
C
Solution
Follow absolute encoder setup proce-
dure.
Replace servomotor.
Replace servo amplifier.
9-19
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