Yaskawa FSP Amplifier - Manual (Page 299)

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