Yaskawa Σ-V Series AC Servo Drives Rotational Motor Analog Voltage Reference - Manual (Page 261)

9 Troubleshooting
9.1.1 List of Alarms
9-2
9.1
Alarm Displays
The following sections describe troubleshooting in response to alarm displays.
The alarm name, alarm meaning, alarm stopping method, and alarm reset capability are listed in order of the
alarm numbers in 9.1.1 List of Alarms .
The causes of alarms and troubleshooting methods are provided in 9.1.2 Troubleshooting of Alarms .
9.1.1 List of Alarms
This section provides list of alarms.
Servomotor Stopping Method
If an alarm occurs, the servomotor can be stopped by doing either of the following operations.
Gr.1: The servomotor coasts to a stop when an alarm occurs.
Gr.2: The servomotor is stopped according to the setting in Pn00B.1 if an alarm occurs. Pn00B.1 is factory-set
to stop the servomotor by setting the speed reference to " 0. " The servomotor under torque control will
always use the Gr.1 method to stop. By setting Pn00B.1 to 1, the servomotor stops using the same
method as Gr.1. When coordinating a number of servomotors, use this stopping method to prevent
machine damage that may result due to differences in the stop method.
Alarm Reset
Available: Removing the cause of alarm and then executing the alarm reset can clear the alarm.
N/A: Executing the alarm reset cannot clear the alarm.
Alarm
Number
Alarm Name Meaning
Servo-
motor
Stopping
Method
Alarm
Reset
A.020 Parameter Checksum Error 1
The data of the parameter in the SERVOPACK
is incorrect.
Gr.1 N/A
A.021 Parameter Format Error 1
The data of the parameter in the SERVOPACK
is incorrect.
Gr.1 N/A
A.022 System Checksum Error 1
The data of the parameter in the SERVOPACK
is incorrect.
Gr.1 N/A
A.030 Main Circuit Detector Error Detection data for main circuit is incorrect. Gr.1 Available
A.040 Parameter Setting Error 1
The parameter setting is outside the setting
range.
Gr.1 N/A
A.041
Encoder Output Pulse Setting
Error
The encoder output pulse (Pn212) is outside the
setting range or does not satisfy the setting con-
ditions.
Gr.1 N/A
A.042 Parameter Combination Error
Combination of some parameters exceeds the
setting range.
Gr.1 N/A
A.050 Combination Error
The SERVOPACK and the servomotor capaci-
ties do not match each other.
Gr.1 Available
A.051 Unsupported Device Alarm The device unsupported was connected. Gr.1 N/A
A.0b0
Cancelled Servo ON
Command Alarm
The servo ON signal (/S-ON) was sent from the
host controller after executing a utility function
that turns ON servomotor.
Gr.1 Available
A.100
Overcurrent or Heat Sink
Overheated
An overcurrent flowed through the IGBT or the
heat sink of the SERVOPACK was overheated.
Gr.1 N/A
A.400 Overvoltage Main circuit DC voltage is excessively high. Gr.1 Available
A.450
Main-Circuit
Capacitor Overvoltage
The capacitor of the main circuit has deterio-
rated or is faulty.
Gr.1 N/A
A.510 Overspeed
The servomotor speed is above the maximum
rotational speed.
Gr.1 Available