INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.2.1
Troubleshooting Problems with Alarm Display
cont.
394
Cause
Remedy
A
Wiring grounded between Servopack and
servomotor.
Check and correct wiring.
B
Servopack ambient temperature exceeds
55
°
C
Bring Servopack ambient temperature to
55
°
C
Note
Alarm cannot be reset while power
transistor module temperature ex-
ceeds 90
°
C.
C
Servomotor U, V, or W phase grounded.
Replace servomotor.
D
•
Circuit board (1PWB) defective
•
Power transistor defective
Replace Servopack.
E
Current feedback circuit, power transistor,
DB relay, or circuit board defective.
Replace Servopack.
D
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.20
Fuse blown
OFF
ON
OFF
OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
A
At control power ON
At main circuit power ON
B, C
Cause
Remedy
A
Circuit board (1PWB) defective
Replace Servopack.
B
Fuse is blown.
Replace Servopack.
C
Main circuit diode module defective
Replace Servopack.
D
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.31
Position error
pulse overflow
(position control
only)
ON
ON
OFF
OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
6