Yaskawa FSP Amplifier - Manual (Page 280)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-15
„ A.71, A.72
A.71: Overload: High Load
A.72: Overload: Low Load.
The alarm output, status, and remedy for A.71 are the same as for A.72.
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
ON ON ON OFF
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
W hen speed reference
is entered.
No sevomotor
rotation.
At power ON.
B
C A
W hen Servo ON
(S-ON) signal is turned
ON.
B
During
servomotor
operation.
Cause of the Problem Solution
A
Incorrect or disconnected servomotor
wiring. Check wiring and connectors at
the servomotor.
B Load greatly exceeds rated torque.
Reduce load torque and inertia.
Otherwise, replace with a larger
capacity servomotor.
C Defective circuit board (1PWB). Replace servo amplifier.