Inspection, Maintenance, and Troubleshooting
9.2.1 Troubleshooting Problems with Alarm Displays
9 -8
J
J
A.10
A.10: Overcurrent or Heat Sink Overheated
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALM
Output
ALO1
ALO2
ALO3
Output
ON
OFF
OFF
OFF
Note
OFF: Output transistor is OFF (alarm state). ON:
Output transistor is
ON.
Status and Remedy for Alarm
During Servomotor
operation
When SERVO ON (/S-ON)
signal turned ON
A, B, D, E,
F, G, H
C, D
At power ON
C
Cause
Remedy
A
Wiring shorted between Servopack and Ser-
vomotor.
Check and correct wiring.
B
Servomotor U, V, or W phase shorted.
Replace Servomotor.
C
S
Circuit board (1PWB) defective.
S
Power transistor defective.
Replace Servopack.
D
Current feedback circuit, power transistor,
DB circuit, or circuit board defective.
Replace Servopack.
E
The ambient temperature of the Servopack
exceeded 55
°
C.
Alter conditions so that the ambient tempera-
ture goes below 55
°
C.
F
The air flow around the heat sink is bad.
Follow the installation method and provide
sufficient space as specified.
G
Fan stopped.
Replace Servopack.
H
Servopack is operating under an overload.
Reduce load.
Note
E to H can occur with a Servopack with a capacity of all models (400 V) and
1.5 kW to 5 kW (200 V).
9
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