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

9 Troubleshooting

9.2.1 List of Warnings

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 alarms and troubleshooting methods are provided in 9.2.2 Troubleshooting of Warnings.
9.2.1 List of Warnings
The relation between warning displays and warning code outputs are shown below.
Warning
Warning Name
Display
Position Error Pulse
A.900
Overflow
Position Error Pulse
A.901 Overflow Alarm at
Servo ON
A.910 Overload
A.911 Vibration
A.920 Regenerative Overload
Dynamic Brake
A.921
Overload
Change of Parameters
A.941
Requires Restart
A.971 Undervoltage
Note 1. Warning code is not outputted without setting Pn001.3 =1 (Outputs both Alarm Codes and Warning Codes.)
2. If Pn008.2 = 1 (Do not detect warning) is selected, all warnings will not be detected.
9-20
Meaning
Position error pulse exceeded the parameter settings
(Pn520×Pn51E/100).
When the servo turns ON, the position error pulses 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 contin-
ues, 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 "Vibration Detection Switch" of Pn310.
This warning occurs before the regenerative overload alarm
(A.320) occurs. If the warning is ignored and operation contin-
ues, a regenerative overload alarm may occur.
This warning occurs before Dynamic Brake Overload (A.731)
alarm occurs. If the warning is ignored and operation contin-
ues, a dynamic brake overload alarm may occur.
Parameters that require the restart have been changed.
This warning occurs before Undervoltage (A.410) alarm
occurs. If the warning is ignored and operation continues, an
undervoltage alarm may occur.
Warning Code Output
ALO1 ALO2 ALO3
H H H
H H H
L H H
L H H
H L H
H L H
H H L
L L L