9 Troubleshooting
9-14
A.d0
A.d0: Position Error Pulse Overflow
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state). ON: Output transistor is
ON.
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1
ALO2
ALO3
ON
ON
OFF
OFF
Cause
Remedy
A
Servomotor wiring incorrect or poor connec-
tion.
Check wiring and connectors at servomo-
tor.
B
SERVOPACK was not correctly adjusted.
Increase speed loop gain (Pn100) and
position loop gain (Pn102).
C
Motor load was excessive.
Reduce load torque or moment of inertia.
If problem not corrected, replace with a
servomotor with larger capacity.
D
Position reference is too high.
• Reduce the acceleration/deceleration
rate.
• Correct electronic gear ratio.
At power ON
E
During servomotor
operation
Overflow during
high-speed rotation
A
Operation is normal,
but overflow occurs
when long reference
is input.
B, C, D
