15.2 Alarm Displays
15.2.1 List of Alarms
15-6
List of Alarms
Alarm
Number
Alarm Name
Alarm Meaning
Servo-
motor
Stop-
ping
Method
Alarm
Reset
Possi-
ble?
Alarm Code Output
/ALO1 /ALO2 /ALO3
A.020
Parameter Checksum
Error
There is an error in the parameter data in
the SERVOPACK.
Gr.1
No
H
H
H
A.021
Parameter Format
Error
There is an error in the parameter data
format in the SERVOPACK.
Gr.1
No
A.022
System Checksum
Error
There is an error in the parameter data in
the SERVOPACK.
Gr.1
No
A.024
System Alarm
An internal program error occurred in the
SERVOPACK.
Gr.1
No
A.025
System Alarm
An internal program error occurred in the
SERVOPACK.
Gr.1
No
A.030
Main Circuit Detector
Error
There is an error in the detection data for
the main circuit.
Gr.1
Yes
A.040
Parameter Setting
Error
A parameter setting is outside of the set-
ting range.
Gr.1
No
A.041
Encoder Output Pulse
Setting Error
The setting of Pn212 (Encoder Output
Pulses) or Pn281 (Encoder Output Reso-
lution) is outside of the setting range or
does not satisfy the setting conditions.
Gr.1
No
A.042
Parameter Combina-
tion Error
The combination of some parameters
exceeds the setting range.
Gr.1
No
A.044
Semi-Closed/Fully-
Closed Loop Control
Parameter Setting
Error
The settings of the Option Module and
Pn002 = n.X
(External Encoder
Usage) do not match.
Gr.1
No
A.04A
Parameter Setting
Error 2
There is an error in setting of parameters
reserved by the system.
Gr.1
No
A.050
Combination Error
The capacities of the SERVOPACK and
Servomotor do not match.
Gr.1
Yes
A.051
Unsupported Device
Alarm
An unsupported device was connected.
Gr.1
No
A.070
Motor Type Change
Detected
The connected motor is a different type of
motor from the previously connected
motor.
Gr.1
No
A.080
Linear Encoder Pitch
Setting Error
The setting of Pn282 (Linear Encoder
Pitch) has not been changed from the
default setting.
Gr.1
No
A.0b0
Invalid Servo ON
Command Alarm
The /S-ON (Servo ON) signal was input
from the host controller after a utility func-
tion that turns ON the Servomotor was
executed.
Gr.1
Yes
A.100
Overcurrent Detected
An overcurrent flowed through the power
transformer or the heat sink overheated.
Gr.1
No
L
H
H
A.101
Motor Overcurrent
Detected
The current to the motor exceeded the
allowable current.
Gr.1
No
A.300
Regeneration Error
There is an error related to regeneration.
Gr.1
Yes
L
L
H
A.320
Regenerative Over-
load
A regenerative overload occurred.
Gr.2
Yes
A.330
Main Circuit Power
Supply Wiring Error
•
The AC power supply input setting or
DC power supply input setting is not
correct.
•
The power supply wiring is not correct.
Gr.1
Yes
Continued on next page.