Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 268)

9.1 Troubleshooting
9-3
T
roubleshooting
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 over the maximum allowable
speed.
Gr.1 Available
A.511
Overspeed of Encoder Output
Pulse Rate
The set value of the encoder output pulse (Pn212) exceeds
the speed limit.
Gr.1 Available
A.520 Vibration Alarm Vibration at the motor speed was detected. Gr.1 Available
A.521 Autotuning Alarm
Vibration was detected while performing tuning-less func-
tion.
Gr.1 Available
A.710 Overload: High Load
The motor 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 motor was operating continuously under a torque
largely 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 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 temperature of the SERVOPACK heat sink 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
All the power supplies for the absolute encoder have failed
and position data was cleared.
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 is lower than the specified value after the
control power supply is 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 (Incremental)
External encoder is faulty. Gr.1 Available
A.8A3 *
External Encoder Error of
Position (Absolute)
The external encoder position data is incorrect. Gr.1 Available
A.8A5 * Encoder Overspeed The overspeed from the external encoder occurred. Gr.1 Available
A.8A6 * Encoder Overheated The overheat from the external encoder occurred. Gr.1 Available
A.b31
Current Detection Error1
(Phase-U)
The current detection circuit for phase-U is faulty. Gr.1 N/A
A.b32
Current Detection Error 2
(Phase-V)
The current detection circuit for phase-V is faulty. Gr.1 N/A
A.b33
Current Detection Error 3
(Current detector)
The detection circuit for the current is faulty. Gr.1 N/A
A.bF0 System Alarm 0 “Internal program error 0" occurred in the SERVOPACK. Gr.1 N/A
A.bF1 System Alarm 1 “Internal program error 1" occurred in the SERVOPACK. Gr.1 N/A
A.bF2 System Alarm 2 “Internal program error 2" occurred in the SERVOPACK. Gr.1 N/A
A.bF3 System Alarm 3 “Internal program error 3" occurred in the SERVOPACK. Gr.1 N/A
A.bF4 System Alarm 4 “Internal program error 4" occurred in the SERVOPACK. Gr.1 N/A
A.C10 Servo Overrun Detected The servomotor ran out of control. Gr.1 Available
(cont’d)
Alarm
Display
Alarm Name Meaning
Servomotor
Stop
Method
Alarm
Reset