Yaskawa FSP Amplifier - Manual (Page 290)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-25
„ A.86: Encoder Overheated
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
OFF OFF OFF OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
During servomotor
operation
When the control
panel is turned ON.
A, B C, D
Cause of the Problem Solution
A
The ambient temperature of the
servomotor is high.
Alter conditions so that the
ambient temperature goes
below 40°C.
B
Servomotor is operating under
overload.
Reduce load.
C Defective circuit board (1PWB). Replace servo amplifier.
D Encoder defective. Replace servo amplifier.