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, alarm code output, 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 is stopped according to the setting in Pn001.0 if an alarm occurs. Pn001.0 is factory-set
to stop the servomotor by applying the DB.
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
Servomotor
Stopping
Method
Alarm
Reset
Alarm Code Output
ALO1 ALO2 ALO3
A.020
Parameter Checksum
Error 1
The data of an internal parameter in the
multi-winding drive unit is incorrect.
Gr.1 N/A H H H
A.021
Parameter Format Error 1
The data type of an internal parameter in
the multi-winding drive unit is incorrect.
Gr.1 N/A H H H
A.022
System Checksum Error 1
The data of an internal parameter in the
multi-winding drive unit is incorrect.
Gr.1 N/A H H H
A.030*
Main Circuit Detector Error
Detection data for main circuit is incorrect. Gr.1 Available H H H
A.040
Parameter Setting Error 1
The parameter setting is outside the setting
range.
Gr.1 N/A H H H
A.041
Encoder Output Pulse
Setting Error
The encoder output pulse (Pn212) is out-
side the setting range or does not satisfy
the setting conditions.
Gr.1 N/A H H H
A.042
Parameter Combination
Error
Combination of some parameters exceeds
the setting range.
Gr.1 N/A H H H
A.045
Multi-winding Drive Unit
Parameter Setting Error
The parameter setting does not match the
number of SERVOPACK axes that are
connected.
Gr.1 N/A H H H
A.050
Combination Error
The SERVOPACK and the servomotor
capacities do not match each other.
Gr.1 Available H H H
A.051
Unsupported Device Alarm
The device unsupported was connected. Gr.1 N/A H H H
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 H H H
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 L H H
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