9.1 Alarm Displays
9-3
A.410 Undervoltage Main circuit DC voltage is excessively low. Gr.2 Available
A.42A Converter error
One of the following was detected by the converter.
• An operation error occurred when using the limit relay for inrush
current
• PN voltage error
• Regeneration operation error
• The converter’s heat sink overheated
• An operation error occurred when using the converter and fan
Gr.1 Available
A.450
Main-Circuit
Capacitor Overvoltage
The capacitor of the main circuit has deteriorated or is faulty. Gr.1 N/A
A.510 Overspeed The servomotor speed is above the maximum rotational speed. Gr.1 Available
A.511
Overspeed of Encoder
Output Pulse Rate
The pulse output speed upper limit of the set encoder output pulse
(Pn212) is exceeded.
Gr.1 Available
A.520 Vibration Alarm Incorrect vibration at the motor speed was detected. Gr.1 Available
A.521 Autotuning Alarm Vibration was detected while performing tuning-less function. Gr.1 Available
A.710 Overload: High Load
The servomotor was operating for several seconds to several tens of
seconds under a torque largely exceeding ratings.
Gr.2 Available
A.720 Overload: Low Load
The servomotor was operating continuously under a torque exceed-
ing ratings.
Gr.1 Available
A.730
A.731
Dynamic Brake Overload
When the dynamic brake was applied, rotational energy exceeded
the capacity of dynamic brake resistor.
Gr.1 Available
A.740
Overload of Surge
Current Limit Resistor
The main circuit power was frequently turned ON and OFF. Gr.1 Available
A.7A0 Heat Sink Overheated The heat sink of the SERVOPACK or converter exceeded 100°C. Gr.2 Available
A.7AB
Built-in Fan in
SERVOPACK Stopped
The fan inside the SERVOPACK stopped. Gr.1 Available
A.810 Encoder Backup Error
The power supplies to the encoder all failed and position data was
lost.
Gr.1 N/A
A.820 Encoder Checksum Error The checksum results of encoder memory is incorrect. Gr.1 N/A
A.830
Absolute Encoder Battery
Error
The battery voltage was lower than the specified value after the con-
trol power supply was turned ON.
Gr.1 Available
A.840 Encoder Data Error Data in the encoder is incorrect. Gr.1 N/A
A.850 Encoder Overspeed
The encoder was rotating at high speed when the power was turned
ON.
Gr.1 N/A
A.860 Encoder Overheated The internal temperature of encoder is too high. Gr.1 N/A
A.8A0 External Encoder Error External encoder is faulty. Gr.1 Available
A.8A1
External Encoder Error of
Module
Serial converter unit is faulty. Gr.1 Available
A.8A2
External Encoder Error of
Sensor
External encoder is faulty. Gr.1 Available
A.8A3
External Encoder Error of
Position
The position data of external encoder is faulty. Gr.1 Available
A.8A5
External Encoder Over-
speed
The overspeed from the external encoder occurred. Gr.1 Available
A.8A6
External Encoder Over-
heated
The overheat from the external encoder occurred. Gr.1 Available
A.A
*1
SERVOPACK: Command
Option Module Alarms
−−−
∗1. These alarms occur in SERVOPACKs with command option modules.
For details, refer to the manual for the command option module that is connected.
(cont’d)
Alarm
Number
Alarm Name Meaning
Servomotor
Stopping
Method
Alarm
Reset
To Next Page
Loading...
Need help?
General
