Hardware reference
HARDWARE REFERENCE MANUAL
282
Revision 5.0
Warning list
When the option unit interface is enabled, the following additional warnings
can occur:
Alarm list
When the option unit interface is enabled, the following additional alarms
can occur:
Warning
number
Warning name
Latch*1
Warning condition
Warning Output Selection
(Pn440, Pn441)
Countermeasure
AAh
Serial bus commu-
nication warning
Always
fixed with
no time limit
Communication Error occurred 1 time.
Not available
•
Check the routing of the communication cable and
the FG wiring.
•
Mount ferrite cores on the communication cable.
•
Replace the servo drive or TJ2-KS02
ABh
Serial bus process-
ing warning
Always
fixed with
no time limit
The command has been accepted and task processed
but had any problem to cause abnormal termination.
Not available
•
Check the power supply condition of the servo
drive.
•
Replace the servo drive or TJ2-KS02
Alarm
number
Error detection function
Detection details and probable cause
Countermeasure
Attribute
Main
Sub
History
Can be
cleared
Immediate
stop
27
1
Absolute encoder clear
error protection
A reset of the multi-rotation data of the absolute
encoder has been executed over USB communica-
tions.
•
Check whether a reset of the multi-rotation data of
the absolute encoder has been executed over
USB communications.
Note: This is not a fault recovery procedure but a
safety measure.
Although no alarm is generated in case a reset of
the multi-rotation data is executed over serial bus
communications, reset the control power supply in
such a case also.
√
−
−
27
4
Command error protection Amount of change in the position command has
exceeded a prespecified value.
•
Check whether the amount of change in the posi-
tion command is excessive, for example in interpo-
lation.
√
−
−