Yaskawa FSP Amplifier - Manual (Page 279)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-14
„ A.51: Overspeed
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
ON OFF ON OFF
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
When Servo ON (S-ON)
signal is turned ON.
During high-speed
servomotor rotation
after a reference
input.
At power ON. A D
B, C
Cause of the Problem Solution
A Incorrect servomotor wiring.
Check and correct wiring.
(Check for U-, V-, and W-phase
wiring errors.)
B
Position or speed reference input is too
large. Lower the reference input
values.
C Incorrect reference input gain settings.
Check and correct parameter
settings.
D Defective circuit board (1PWB). Replace servo amplifier.