Warning Displays; List Of Warnings - YASKAWA Sigma-V Series User Manual

10 Troubleshooting

10.2.1 List of Warnings

10.2 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

10.2.1 List of Warnings.

The causes of warnings and troubleshooting methods are provided in 10.2.2 Troubleshooting of Warnings.
10.2.1 List of Warnings
This section provides list of warnings.
Warning
Number
A.900
A.901
A.910
A.911
A.920
A.921
A.930
A.941
A.971
A.9A0
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
10-22
Warning Name
Position Error Overflow
Position Error Overflow
Alarm at Servo ON
Overload
Vibration
Regenerative Overload
Dynamic Brake Overload
Absolute Encoder Battery
Error
Change of Parameters Re-
quires Restart
Undervoltage
Overtravel
warning (A.971).
Meaning
Position error exceeded the parameter setting
(Pn520×Pn51E/100).
When the servomotor power is ON, the position
error exceeded the parameter setting
(Pn526×Pn528/100).
This warning occurs before the overload alarms
(A.710 or A.720) occur. If the warning is ignored
and operation continues, an overload alarm may
occur.
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).
This warning occurs before the regenerative over-
load alarm (A.320) occurs. If the warning is
ignored and operation continues, a regenerative
overload alarm may occur.
This warning occurs before dynamic brake over-
load alarm (A.731) occurs. If the warning is
ignored and operation continues, a dynamic brake
overload alarm may occur.
This warning occurs when the voltage of absolute
encoder's battery is lowered.
Parameters that require the restart have been
changed.
This warning occurs before undervoltage alarm
(A.410) occurs. If the warning is ignored and
operation continues, an undervoltage alarm may
occur.
Overtravel is detected while the servomotor
power is ON.
Warning Code Output
ALO1 ALO2 ALO3
H H H
H H H
L H H
L H H
H L H
H L H
L L H
H H L
L L L
H L L