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Sigma II User's Manual
n
A.41
A.41: Main Circuit Voltage Error Detected: Undervoltage
Display and Outputs
Status and Remedy for Alarm
During servomotor
operation.
When main circuit
power is turned ON.
The power supply voltage exceeds
A
specified range.
Fuse blown.
B
Defective rectifying diode.
C
Defective servo amplifier.
D
Alarm Outputs
Alarm Code Output
ALO1
ALO2
OFF
OFF
Note:
OFF:
Output transistor is OFF (alarm state).
ON:
Output transistor is ON.
A, B, C
A, B, C
Cause of the Problem
Chapter 9: Inspection, Maintenance, and Troubleshooting
ALM Output
ALO3
ON
OFF
When control power
is turned ON.
Solution
Check power supply voltage.
Replace servo amplifier.
9-12
D
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