CHAPTER 1 SCREEN OPERATIONS
5. Diagnosis Screens
I
– 275
5.4.5 Display items for the synchronous error
The various data related to the synchronous error is monitored.
Change the display items using the
key and
key to refer to the data.
Display item
Details
Slave axis
This displays the slave axis No. corresponding to the master axis.
Command error
This is the deviation of the slave axis machine value in respect to the
master axis. The error of the command value to the servo control section
before pitch error compensation, relative position compensation and
backlash compensation is displayed.
If this error occurs, the parameters that should be the same for the
synchronous axes are different.
Command error = Command s
−
command m
−
∆
Command s : Slave axis command value
Command m: Master axis command value
∆
: Command s
−
command m at start of synchronous
control
FB error
This is the deviation of the slave axis feedback value in respect to the
feedback value from the master axis servomotor. The error of the actual
machine position is displayed. The synchronous error check is carried
out on this error.
FB error = FBs
−
FBm
−
∆
FBs : Slave axis feedback value
FBm: Master axis feedback value
∆
: FBs
−
FBm at start of synchronous control
FB error MAX1
This displays the max. FB error value from the start of synchronous
control.
FB error MAX2
This displays the max. FB error value at every approx. 30 seconds from
the start of synchronous control.
Machine posn
This displays the commanded machine position for the master axis.
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