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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, al
arm 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 troublesh
ooting 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 Pn00
1.0 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 force 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
Alarm Code Output
ALO1 ALO2 ALO3
A.020
Parameter Checksum
Error 1
The data of the parameter in the SERVO-
PACK is incorrect.
Gr.1 N/A
H H
H
A.021 Parameter Format Error 1
The data of the parameter in the SERVO-
PACK is incorrect.
Gr.1 N/A
A.022 System Checksum Error 1
The data of the parameter in the SERVO-
PACK 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 resolution (Pn281) is
outside
the setting range or does not satisfy
the setting conditions.
Gr.1
N/A
A.042
Parameter Combination
Error
Combination of some parameters exceeds
the settin
g range.
Gr.1
N/A
A.050 Combination Error
The SERVOPACK and the servomotor
capacities do not match each other.
Gr.1 Available
A.051 Unsupported Device Alarm The device unsupported was connected. Gr.1 N/A
A.080
Linear Scale Pitch Setting
Error
The setting of the linear scale pitch
(Pn282)
has not been changed from the default set-
ting.
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
Overhe
ated
An overcurrent flowed through the IGBT or
the
heat sink of the SERVOPACK was over-
heated.
Gr.1 N/A L H H
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