Fagor CNC 8060, Руководство по установке, Страница: 672 / 698

Installation manual.
CNC 8060
CNC 8065
16.
LASER.
Lase
r. Ga
p control.
·672·
(R
EF
: 1709)
16.1.2 Adjusting the axis that controls the gap.
The axis controlling the gap must not be adjusted in the standard way, rather it must be done
with approach movements with the gap control active. The parameters GAPGAIN,
PROGAIN, FFGAIN and ACFGAIN will be obtained from these movements. As a reference
to prevent overshooting the gap, it is recommended to work with the following values.
The axis that controls the gap should be adjusted so that it can reach zero follow-up errors
(parameters FFGAIN and ACFGAIN). When the axes are Sercos, it is possible to make a
prior adjustment using the FineTune application.
Loop time.
It is advisable to use a cycle time of 2 milliseconds (LOOPTIME=2).
Sercos speed
Analog. Sercos position.
• GAPGAIN = 0.20.
• FFGAIN = 90 %.
• ACFGAIN = 30 %. • GAPGAIN = 0.20.
• It is recommended to reduce the FFGAIN
values by between 0.5 and 1% of the
standard adjustment values.
• The ACFGAIN values can match those of a
standard adjustment.
Speed and acceleration profile without overshooting the gap.
(A) The G.GAP variable reflects the real gap value, as detected by the sensor.
(B) The A.FLWE.Z variable reflects the following error of the Z axis (sensor axis).
(C) The DIFF (A.TPOS.Z) signal indicates the speed on Z.
(D) The DIFF(DIFF(A.TPOS.Z)) signal indicates the acceleration on Z.
Parameter. Meaning.
FFGAIN Percentage of Feed-Forward in automatic.
ACFGAIN Percentage of AC-Forward in automatic.
Parameter. Meaning.
LOOPTIME Cycle time of the CNC.
A
B
C
D