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
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