Omron XTRADRIVE User Manual page 269

XtraDrive User Manual
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A.d0: Position Error Pulse Overflow
Display and Outputs
ALO1
ON
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
During servomotor operation.
When a long reference is
entered during normal
operation.
When a properly entered
reference pulse does not
generate a feedback
pulse.
A
B
C
D
E
Chapter 9: Inspection, Maintenance, and Troubleshooting
Alarm Outputs
Alarm Code Output
ALO2
ON
During high speed
rotation.
Cause of the Problem
Servomotor wiring incorrect or
poor connection
Servo amplifier was not
correctly adjusted.
Motor load was excessive.
Position reference pulse
frequency was too high.
Circuit board (1PWB) defective.
9-21
ALM Output
ALO3
OFF OFF
A At power ON.
A
B, C, D
E
Solution
Check wiring and connectors at encoder.
Increase speed loop gain (Pn100) and
position loop gain (Pn102).
Reduce load torque or inertia. If problem
persists, replace with a larger capacity
motor.
Increase or decrease reference pulse
frequency.
Add smoothing function.
Correct electronic gear ratio.
Replace servo amplifier.
E