Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - MECHATROLINK-II Communications Reference - Manual (Page 300)

9.1 Alarm Displays
9-3
9
Trou
blesh
ooting
A.300 Regeneration Error Regenerative circuit or regenerative resistor is faulty. Gr.1 Available
A.320 Regenerative Overload
Regenerative energy exceeds regenerative resistor
capacity.
Gr.2 Available
A.330
Main Circuit Power
Supply Wiring Error
• Setting of AC input/DC input is incorrect.
• Power supply wiring is incorrect.
Gr.1 Available
A.400 Overvoltage Main circuit DC voltage is excessively high. Gr.1 Available
A.410 Undervoltage Main circuit DC voltage is excessively low. Gr.2 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 rota-
tional 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 exceed-
ing ratings.
Gr.2 Available
A.720 Overload: Low Load
The servomotor was operating continuously under a
torque exceeding 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 resis-
tor.
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 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 posi-
tion 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 control 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
Overspeed
The overspeed from the external encoder occurred. Gr.1 Available
A.8A6
External Encoder
Overheated
The overheat from the external encoder occurred. Gr.1 Available
(cont’d)
Alarm
Number
Alarm Name Meaning
Servo-
motor
Stop-
ping
Method
Alarm
Reset