Yaskawa FSP Amplifier - Manual (Page 284)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-19
„ A.7A: Heat Sink Overheated
Heat sink temperature exceeds 100°C.
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
During servomotor
operation.
W hen control
power is turned
ON.
A, B
C, D
E
Cause of the Problem Solution
A
The ambient temperature of the servo
amplifier exceeds 55°C.
Alter conditions so that the
ambient temperature goes below
55°C.
B
Inadequate airflow around the heat
sink. Provide sufficient space as
specified.
C Fan stopped. Replace servo amplifier.
D
Servo amplifier is operating under
overload.
Reduce load.
E Defective servo amplifier. Replace servo amplifier.
Note: Larger servo amplifiers (1.5 kW., or larger) will display alarm A.10 if the heat sink overheats.