Yaskawa Large Capacity Sigma II Series - Manual (Page 361)

8 Inspection, Maintenance, and Troubleshooting
8.2.1 Troubleshooting Problems with Alarm Displays
8-22
„ A.85
A.85: Absolute Encoder Overspeed
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs ALM Output
ALO1 ALO2 ALO3
OFF OFF OFF OFF
Cause Remedy
A Absolute encoder turned ON at a speed
exceeding 200 min
-1
.
Turn ON power supply with the servomo-
tor stopped.
B Circuit board (1PWB) defective. Replace SERVOPACK.
At power ON A, B