Yaskawa FSP Amplifier User Manual
Page 277
FSP Amplifier User’s Manual
Chapter 9: Inspection, Maintenance, and Troubleshooting
9-12
A.40: Main Circuit DC Voltage Error Detected: Overvoltage
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
E
A, D
Cause of the Problem
Solution
A
Power supply voltage is not within the range
of specifications.
Check power supply.
B
Load exceeds capacity of the regenerative
unit.
Check specifications of load
inertia and overhanging load.
C
Malfunctioning regenerative transistor.
D
Defective rectifying diode.
E Defective
servo
amplifier.
Replace servo amplifier.