Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 287)

9 Troubleshooting
9.2.1 List of Warnings
9-22
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 Display Warning Name Meaning
A.900 Position Error Pulse Overflow
Position error pulse exceeded the parameter settings
(Pn520 ×Pn51E/100).
A.901
Position Error Pulse Overflow
Alarm at Servo ON
When the servo turns ON, the position error pulses exceeded the
parameter setting (Pn526 ×Pn528/100).
A.910 Overload
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.
A.911 Vibration
Abnormal vibration at the motor speed was detected. The detec-
tion level is the same as A.520. Set whether to output an alarm
or warning by “Vibration Detection Switch” of Pn310.
A.920 Regenerative Overload
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.
A.921 Dynamic Brake Overload
This warning occurs before Dynamic Brake Overload (A.731)
alarm occurs. If the warning is ignored and operation continues,
a dynamic brake overload alarm may occur.
A.930 Absolute Encoder Battery Error
This warning occurs when the absolute encoder battery voltage
is lowered.
A.94A
Command Option Module IF
Data Setting Warning 1
This warning occurs when there is an error in a parameter
number sent to the SERVOPACK from the host controller or
command option module.
A.94B
Command Option Module IF
Data Setting Warning 2
This warning occurs when out-of-range data is sent to the
SERVOPACK from the host controller or command option
module.
A.94C
Command Option Module IF
Data Setting Warning 3
This warning occurs when there is an error in the parameter data
sent to in the SERVOPACK from the host controller or
command option module.
A.94D
Command Option Module IF
Data Setting Warning 4
This warning occurs when there is an error in the data size sent
to the SERVOPACK from the host controller or command
option module.
A.94E
Command Option Module IF
Data Setting Warning 5
This warning occurs when there is an error in the latch mode
settings sent to the SERVOPACK from the host controller or
command option module.
A.95A
Command Option Module IF
Command Warning 1
This warning occurs when the host controller or command
option module outputs an operating command when the
operation execution conditions in the SERVOPACK have not
been met.
A.95B
Command Option Module IF
Command Warning 2
This warning occurs when there is an error in the reference
output from the command option module to the SERVOPACK.
A.95D
Command Option Module IF
Command Warning 4
This warning occurs when a latch command is output from the
command option module to the SERVOPACK during latch
operation.
A.95E
Command Option Module IF
Command Warning 5
This warning occurs when an unallowed command combination
is output to the SERVOPACK from the command option
module.
A.95F
Command Option Module IF
Command Warning 6
This warning occurs when there is an error in the command
output to the SERVOPACK from the command option module.
A.960
Command Option Module IF
Communications Warning
This warning occurs when an error occurred in communications
between the SERVOPACK and command option module.