77
9.2.3 Alarm reset
When the servo alarm output (ALM) signal occurs, reset it by any of the following methods after eliminating the
alarm cause.
Important
Before resetting the servo alarm, be sure to eliminate the alarm reason.
If the alarm reset is executed without excluding the alarm reason, equipment damage or fire may occur when
the alarm reset is kept running.
Reset Based on Alarm, Warning Clear (ALM_CLR) command
Based on the panel operation key, press S key to reset
9.2.4 Display of alarm records
Servo drive has tracing display function, which can trace up to 10 alarm records that have occurred.
9.2.5 Deletion of Alarm records
The function of deleting servo-driven alarm records.
The alarm record will not be deleted even if the alarm reset is performed or the power supply of the servo drive
main circuit is cut off, so the following operations must be performed.
The following operations can be performed
Operating tool
Distribution
Panel operator
Fn006
debugging
software
[Alarm Display]---[Historical
Alarm]---[Clear]
9.3 When warning is displayed
When the servo drive is warned, the LED of the panel display unit displays the Alarm number. The warning will
be displayed before an exception occurs.
The following is a list of warnings and their causes and treatment measures.
9.3.1 Warning list
The Alarm names and contents are listed below in the order of the Alarm numbers.
Alarm
number
Alarm name
Alarm content
Reset
A.900
Position deviation is too large
The accumulated position deviation exceeds the proportion set by
(
Pn520×Pn51E
100
).
Need
A.901
Excessive position deviation
when servo ON
The accumulated position deviation during servo ON exceeds the
proportion set by (
Pn526×Pn528
100
).
Need
A.910
Overload
Warning display immediately before overload (A.710/720) alarm is
reached. If the operation continues, an alarm may occur.
Need
A.911
Vibration
Abnormal vibration in motor operation is detected. Same as the detection
value of A.520, the vibration detection switch (Pn310) is used to set the
alarm or warning.
Need
A.920
Regeneration overload
Warning display immediately before reaching regeneration overload
(A.320) alarm. If the operation continues, an alarm may occur.
Need
A.921
DB overload
Warning display immediately before DB overload (A .731) alarm is
reached. If the operation continues, an alarm may occur.
Need
A.930
Battery failure of absolute
encoder
Is a warning display of low battery voltage of absolute encoder.
Need
A.94A
Data Setting Warning 1
(Parameter Number)
The parameter number of data setting warning 1 (parameter number)
command is incorrect.
Automatic
reset *
A.94B
Data setting warning 2 (out of
data range)
Out-of-range values are set in the command data.
Automatic
reset *
A.94C
Data setting warning 3
(calculation error)
A calculation error was detected.
Automatic
reset *
A.94D
Data Setting Warning 4
(Parameter Size)
Data size mismatch detected.
Automatic
reset *
A.94E
Data Setting Warning 5 Latch mode exception detected.
need
