15.2 Alarm Displays
15.2.1 List of Alarms
15-7
15
Maintenance
521 hex Autotuning Alarm
Vibration was detected during autotuning for the
tuning-less function.
Gr.1
Yes
550 hex
Maximum Speed Setting
Error
The setting of Pn385 (2385 hex) (Maximum Motor
Speed) is greater than the maximum motor
speed.
Gr.1
Yes
710 hex Instantaneous Overload
The Servomotor was operating for several sec-
onds to several tens of seconds under a torque
that largely exceeded the rating.
Gr.2
Yes
720 hex Continuous Overload
The Servomotor was operating continuously
under a torque that exceeded the rating.
Gr.1
Yes
730 hex
Dynamic Brake Overload
When the dynamic brake was applied, the rota-
tional or linear kinetic energy exceeded the
capacity of the Dynamic Brake Resistor.
Gr.1
Yes
731 hex
740 hex
Inrush Current Limiting
Resistor Overload
The main circuit power supply was frequently
turned ON and OFF.
Gr.1
Yes
7A1 hex
Internal Temperature Error
1 (Control Board Tempera-
ture Error)
The surrounding temperature of the control PCB
is abnormal.
Gr.2
Yes
7A2 hex
Internal Temperature Error
2 (Power Board Tempera-
ture Error)
The surrounding temperature of the power PCB
is abnormal.
Gr.2
Yes
7A3 hex
Internal Temperature Sen-
sor Error
An error occurred in the temperature sensor cir-
cuit.
Gr.2
No
7A4 hex
Power Transistor Over-
heated (Abnormal power
transistor temperature.)
The temperature of the power transistor is abnor-
mal.
Gr.2
No
7Ab hex
SERVOPACK Built-in Fan
Stopped
The fan inside the SERVOPACK stopped.
Gr.1
Yes
810 hex Encoder Backup Alarm
The power supplies to the encoder all failed and
the position data was lost.
Gr.1
No
820 hex Encoder Checksum Alarm
There is an error in the checksum results for
encoder memory.
Gr.1
No
830 hex Encoder Battery Alarm
The battery voltage was lower than the specified
level after the control power supply was turned
ON.
Gr.1
Yes
840 hex Encoder Data Alarm
There is an internal data error in the encoder.
Gr.1
No
850 hex Encoder Overspeed
The encoder was operating at high speed when
the power was turned ON.
Gr.1
No
860 hex Encoder Overheated
The internal temperature of encoder is too high.
Gr.1
No
861 hex Motor Overheated
The internal temperature of motor is too high.
Gr.1
No
890 hex Encoder Scale Error
A failure occurred in the linear encoder.
Gr.1
No
891 hex Encoder Module Error
An error occurred in the linear encoder.
Gr.1
No
8A0
hex
*2
External Encoder Error
An error occurred in the external encoder.
Gr.1
Yes
8A1
hex
*2
External Encoder Module
Error
An error occurred in the Serial Converter Unit.
Gr.1
Yes
8A2
hex
*2
External Incremental
Encoder Sensor Error
An error occurred in the external encoder.
Gr.1
Yes
8A3
hex
*2
External Absolute Encoder
Position Error
An error occurred in the position data of the
external encoder.
Gr.1
Yes
8A5
hex
*2
External Encoder Over-
speed
An overspeed error occurred in the external
encoder.
Gr.1
Yes
Continued on next page.
Continued from previous page.
Alarm
Code
Alarm Name
Alarm Meaning
Servo-
motor
Stop-
ping
Method
Alarm
Reset
Possi-
ble?