Yaskawa Large Capacity Sigma II Series - Manual (Page 355)

8 Inspection, Maintenance, and Troubleshooting
8.2.1 Troubleshooting Problems with Alarm Displays
8-16
„ A.74
A.74: Overload of Surge Current Limit Resistor
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 Frequently turning the main circuit power
ON/OFF. Do not repeatedly turn ON/OFF the main
circuit power.
B Circuit board (1PWB) defective. Replace SERVOPACK.
When main circuit power
turned ON or OFF
A At power ON B