Yaskawa Sigma-5 Large Capacity Users Manual: Design and Maintenance-Command Option Interface User Manual
Page 298
9.1 Alarm Displays
9-3
9
Trou
blesh
ooting
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