FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
126
#7 #6 #5 #4 #3 #2 #1 #0Parameter No.
5609 NGC2 NGC1
NGC1: Specifies whether to set the position gain of the servo axes other than
the Cs contouring control axis (1st spindle) to the same value as the
position gain of the Cs contouring control axis automatically.
0: Set automatically
1: Not set automatically
If there is no interpolation between the Cs contouring control axis and
the other servo axes, or if the same servo loop gain is used, set 1.
NGC2: Specifies whether to set the servo loop gain of the servo axes other
than the Cs contouring control axis (2nd spindle for FS15-TT) to the
same value as the servo loop gain of the Cs contouring control axis
automatically.
0: Set automatically
1: Not set automatically
If there is no interpolation between the Cs contouring control axis and
the other servo axes, or if the same servo loop gain is used, set 1.
(3) Automatic position gain setting when switching between the
spindle rotation control mode and Cs contouring control mode
(a) Switching from the spindle rotation control mode to Cs
contouring control mode
If the servo loop gain of the Cs contouring control axis is different
from that of the other servo axes when the modes are switched,
linear and circular interpolations with the Cs contouring control
axis fail.
To prevent this, at the same time that the modes are switched, the
position gain selected by the clutch/gear signals (CTH1A and
CTH2A) (PRM 3069, 3070, 3071, 3072) must be set for servo
axes other than the Cs contouring control axis automatically.
(PRM 5609#1, 0)
(b) Switching from the Cs contouring control mode to spindle
rotation control mode
At the same time that the Cs contouring control mode is switched
to the spindle rotation control mode, the original position gain
(PRM 1825) is set automatically for the servo axes.
(c) Switching between the spindle rotation control and Cs
contouring control modes during automatic operation
If mode switching between the spindle rotation control mode and
Cs contouring control mode is performed midway through an
automatic operation block, the position gain is automatically set
after completion of the block is confirmed.