
11. CONTROL FUNCTION
B–63683EN/01
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In addition to conventional constant positioning time control, three–level
constant positioning time control according to the nibbling pitch can be
applied in nibbling mode. The PF output timer, the position gain, and the
velocity loop gains described in Section 9.6.1 can also be set to one of
three levels. This function is valid only for the X– and Y–axes.
Bit 2 (N3S) of parameter No. 16050 is set to 1.
Nibbling pitch : No. 16800 to No. 16803
Positioning time : No. 16804 to No. 16809
PF output timer : No. 16810 to No. 16815
When bit 4 (LPG) of parameter No. 16051 is set to 1
Position gain : No. 16816 to No. 16821
When bit 5 (VGC) of parameter No. 16051 is set to 1
Velocity loop gain (integral) PK1V : No. 16822 to No. 16824
Velocity loop gain (proportional) PK2V : No. 16825 to No. 16827
During automatic operation, the position gain switching speed and
whether PI or IP control is used can be selected separately for ordinary
machining mode and nibbling mode. Upon a reset, the standard
parameter settings (No. 2003 bit 3 and No. 2028) are selected. This
function is valid only for the X– and Y–axes.
Bit 5 (VGC) of parameter No. 16051 is set to 1 and either or both of bit
7 (KLV) and bit 2 (N3S) of parameter No. 16050 are set to 1.
Position gain switching speed
(ordinary machining) : No. 16842
Position gain switching speed (nibbling) : No. 16843
PI/IP control selection (ordinary machining) : Bit 2 of No. 16054
PI/IP control selection (nibbling) : Bit 3 of No. 16054
#7
16050
#6 #5 #4 #3 #2
N3S
#1 #0
[Data type] Bit
N3S During nibbling, three–level switching for constant positioning time
control for the X– and Y–axes is:
0 : Disabled.
1 : Enabled.
When this parameter is set to 1, parameters No. 16800 to 16827 are also
used.
11.6.2
Nibbling Constant
Positioning Time
Control (Three Levels)
[Conditions for enabling
the function]
[Relevant parameters]
11.6.3
Position Gain
Switching Speed and
PI/IP Control Selection
[Conditions for enabling
the function]
[Relevant parameters]
Parameter