Yaskawa Sigma II Series Servo System - Manual (Page 408)

Sigma II User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
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A.82
A.82: Encoder Checksum 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
Error during encoder memory
check.
• Follow absolute encoder setup
procedure.
• Replace servomotor if error
occurs frequently.
B Circuit board (1PWB) defective. Replace servo amplifier.
At power ON.
During servomotor
When the sensing (SEN)
signal is ON and parameter
Pn002.2 = 0 or 2.
operation.
A A, B
A, B