14.2 Alarm Displays
14.2.1 List of Alarms
14-7
A.740
Inrush Current Limiting
Resistor Overload
The main circuit power supply was frequently
turned ON and OFF.
Gr.1 Yes
A.7A1
Internal Temperature Error
1 (Control Board Tempera-
ture Error)
The surrounding temperature of the control PCB
is abnormal.
Gr.2 Yes
A.7A2
Internal Temperature Error
2 (Power Board Tempera-
ture Error)
The surrounding temperature of the power PCB
is abnormal.
Gr.2 Yes
A.7A3
Internal Temperature Sen-
sor Error
An error occurred in the temperature sensor cir-
cuit.
Gr.2 No
A.7Ab
SERVOPACK Built-in Fan
Stopped
The fan inside the SERVOPACK stopped. Gr.1 Yes
A.810 Encoder Backup Alarm
The power supplies to the encoder all failed and
the position data was lost.
Gr.1 No
A.820 Encoder Checksum Error
There is an error in the checksum results for
encoder memory.
Gr.1 No
A.830 Encoder Battery Alarm
The battery voltage was lower than the specified
level after the control power supply was turned
ON.
Gr.1 Yes
A.840 Encoder Data Alarm There is an internal data error in the encoder. Gr.1 No
A.850 Encoder Overspeed
The encoder was operating at high speed when
the power was turned ON.
Gr.1 No
A.860 Encoder Overheated The internal temperature of encoder is too high. Gr.1 No
A.861 Motor Overheated The internal temperature of motor is too high. Gr.1 No
A.862 Overheat Alarm
The input voltage (temperature) of the overheat
protection input (TH) signal exceeded the setting
of Pn61B (Overheat Alarm Level).
Gr.1 Yes
A.890 Encoder Scale Error A failure occurred in the linear encoder. Gr.1 No
A.891 Encoder Module Error An error occurred in the linear encoder. Gr.1 No
A.8A0 External Encoder Error An error occurred in the external encoder. Gr.1 Yes
A.8A1
External Encoder Module
Error
An error occurred in the Serial Converter Unit. Gr.1 Yes
A.8A2
External Incremental
Encoder Sensor Error
An error occurred in the external encoder. Gr.1 Yes
A.8A3
External Absolute Encoder
Position Error
An error occurred in the position data of the
external encoder.
Gr.1 Yes
A.8A5
External Encoder Over-
speed
An overspeed error occurred in the external
encoder.
Gr.1 Yes
A.8A6
External Encoder Over-
heated
An overheating error occurred in the external
encoder.
Gr.1 Yes
A.AA0 Resetting Failure Resetting the Module failed. Gr.1 No
A.AE6 Address Error
The same node address already exists on the
DeviceNet network.
Gr.1 No
A.AE8
Rotary Switch Setting
Error
There is an error in the node address or baud rate
setting.
Gr.1 No
A.AE9 Bus-OFF Error
A bus-OFF error occurred in DeviceNet commu-
nications.
Gr.1 No
A.b33 Current Detection Error 3 An error occurred in the current detection circuit. Gr.1 No
A.bF0 System Alarm 0
Internal program error 0 occurred in the SERVO-
PACK.
Gr.1 No
A.bF1 System Alarm 1
Internal program error 1 occurred in the SERVO-
PACK.
Gr.1 No
Continued on next page.
Continued from previous page.
Alarm
Number
Alarm Name Alarm Meaning
Servo-
motor
Stop-
ping
Method
Alarm
Reset
Possi-
ble?
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