YASKAWA SGDV SERVOPACK User Manual

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9.2 Warning Displays
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9
Troubleshooting
9.2 Warning Displays
The following sections describe troubleshooting in response to warning displays.
The warning name, warning meaning, and warning code output are listed in order of the warning numbers in
9.2.1 List of Warnings.
The causes of warnings and troubleshoot
ing methods are provided in 9.2.2 Troubleshooting of Warnings.
9.2.1 List of Warnings
This section provides list of warnings.
Note 1. Warning code is not output without setting Pn001.3 =1 (outputs both alarm codes and warning codes).
2. If Pn008.2 = 1 (does not detect warning) is selected, no warnings will be detected except for an undervoltage
warning (A.971).
Warning
Number
Warning Name Meaning
Warning Code Output
ALO1 ALO2 ALO3
A.900
Position Error Overflow
Position error exceeded the parameter setting 
(Pn520Pn51E/100).
H H
H
A.901
Position Error Overflow
Alarm
at Servo ON
When the servomotor power is ON, the position error exceeded
the parameter setting (Pn526Pn528/100).
H H
H
A.910
Overload
This warning occurs before the overload alarms (A.710 or
A.720) occur. If the warning is ignored and operation contin-
ues, an overload alarm may occur.
L H
H
A.911
Vibration
Abnormal vibration at the motor speed
was detected. The
detection level is the same as A.520. Set whether to output an
alarm or warning by the vibration detection switch (Pn310).
L H
H
A.920
Regenerative Overload
This warning occurs before the regenerative ov
erload alarm
(A.320) occurs. If the warning is ignored and operation contin-
ues, a regenerative overload alarm
may occur.
H L
H
A.921
Dynamic Brake Overload
This warning occurs before dynamic brake overload alarm
(A.731) occurs. If the warning is ignored and operation contin-
ues, a dynamic brake overload alarm may occur.
H L
H
A.941
Change of Parameters 
Requires Restart
Parameters that require the restart have been changed. H H L
A.971
Undervoltage
This warning occurs before undervoltage alarm (A.410) occurs.
If the warning is ignored and operation continues, an undervolt-
age alarm may occur.
L L
L
A.9A0
Overtravel Overtravel is detected while the
servomotor power is ON. H L L

YASKAWA SGDV SERVOPACK Specifications

General

Model	SGDV
Type	SERVOPACK
Control Modes	Position, Speed, Torque
Communication Interface	MECHATROLINK-II, MECHATROLINK-III, EtherCAT
Protection Rating	IP20
Operating Temperature	0°C to 55°C
Vibration Resistance	5.9 m/s² (0.6G) at 10-60Hz
Shock Resistance	49 m/s² (5G)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overload, Regenerative overload, Encoder error