Omron OMNUC W Series Manual page 225

9 Troubleshooting
9
A.51
A.51: Overspeed
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON OFF
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
When servo ON (RUN)
signal turned ON
During high-speed
Servomotor rotation
after command input
Cause
A Servomotor wiring is incorrect.
B Position or speed command input is too
large.
C Incorrect command input gain settings.
D
Circuit board (1PWB) is defective.
9-14
ALM Output
ALO3
ON OFF
A
At power ON
B, C
Check and correct wiring. (Check phase-U,
-V, and -W motor wiring errors.)
Lower the command input values.
Check and correct the parameter settings.
Replace the Servo Driver.
D
Remedy