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Sigma II User's Manual
n
A.86
A.86: Encoder Overheated
Display and Outputs
Status and Remedy for Alarm
During survomotor operation.
The ambient temperature of the ser-
A
vomotor is high.
Servomotor is operating under over-
B
load.
C
Circuit board (1PWB) defective.
D
Encoder defective.
Alarm Outputs
Alarm Code Output
ALO1
ALO2
OFF
OFF
Note:
OFF:
Output transistor is OFF (alarm state).
A, B
Cause of the Problem
Chapter 9: Inspection, Maintenance, and Troubleshooting
ALM Output
ALO3
OFF
OFF
When the control panel
is turned ON.
Solution
Alter conditions so that the ambient
temperature goes below 40°C
Reduce load.
Replace servo amplifier.
Replace servo amplifier.
9-24
C, D
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