Omron OMNUC W Series Manual page 245

9 Troubleshooting
9
A.D0
A.D0: Deviation Counter Overflow
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON ON
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
During Servomotor
operation
Deviation counter overflow
during high-speed rotation
Operation is normal, but
deviation counter overflows
when long command is input.
Cause
A
Servomotor wiring is incorrect.
B The Servo Driver was not correctly
adjusted.
C Motor load was excessive.
D Position command is too high.
E Circuit board (1PWB) is defective.
9-34
ALM Output
ALO3
OFF OFF
At power ON
A
B, C, D
Check wiring at Servomotor.
Increase Speed Loop Gain (Pn100) and
Position Loop Gain (Pn102).
Reduce load torque or inertia. If problem not
corrected, replace with a larger capacity
Servomotor.
• Reduce the acceleration/deceleration rate.
• Change electronic gear ratio.
Replace the Servo Driver.
E
Remedy