Yaskawa Large Capacity Sigma II Series - Manual (Page 356)

8.2 Troubleshooting
8-17
8
„ A.7A
A.7A: Heat Sink Overheated
Display and Outputs
Note: OFF:Output transistor is OFF (alarm state). ON: Output transistor is
ON.
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs ALM Output
ALO1 ALO2 ALO3
ON ON ON OFF
Cause Remedy
A The ambient temperature of the SERVO-
PACK exceeded 55
°C.
Alter conditions so that the ambient temper-
ature goes below 55
°C.
B The air flow around the heat sink is bad. Follow the installation method and provide
sufficient space as specified.
C Fan stopped. Replace SERVOPACK.
D SERVOPACK is operating under an over-
load. Reduce load.
E SERVOPACK defective. Replace SERVOPACK.
When control power turned
ON
E
During servomotor
operation
A, B,
C, D