Yaskawa FSP Amplifier - Manual (Page 278)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-13
„ A.41: Main Circuit DC Voltage Error Detected:
Undervoltage
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
OFF OFF ON OFF
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
During servomotor
operation.
When main circuit
power is turned
ON.
When the control
power is turned ON.
A, B, C D
A, B, C
Cause of the Problem Solution
A
The power supply voltage
exceeds specified range.
Check power supply voltage.
B Fuse blown.
C Defective rectifying diode.
D Defective servo amplifier.
Replace servo amplifier.