Yaskawa SGDB - Manual (Page 518)

6.2 Troubleshooting
509
J A.40
Display and Outputs
Digital Operator
Di l d
Alarm Output g p
Display and
Alarm Name
Alarm Code Output Alarm Output
Alarm Name
ALO1 ALO2 ALO3
p
A.40
Main circuit
voltage error
detection.
OFF OFF ON OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
Occurred when the control
power turned ON.
E
Occurred approximately
0.6 second after the main
circuit power turned ON.
A, D
At power ON
A, B, C, D
Cause Remedy
A The 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 Regenerative transistor is abnormal. Replace SERVOPACK.
D • Rectifying diode defective.
• Fuse blown.
• Inrush current-limited resistor discon-
nected.
p
E SERVOPACK defective.
6