
B-63530EN/03 4.DESCRIPTION OF PARAMETERS
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[Setting method] First, select servo axes which perform interpolation with the Cs
contouring axis. (Up to five axes can be selected.)
When there is no servo axis for interpolation with the Cs contouring
axis, set the parameters No. 3900, No. 3910, No. 3920, No. 3930, and
No. 3940 to 0 to terminate parameter setting.
When there are servo axes for interpolation with the Cs contouring
axis, the parameters must be set according to the procedure below for
each axis.
(1) Set the number of a servo axis (1 to 8) for interpolation with the
Cs contouring axis in parameters 39n0 (n = 0, 1, 2, 3, and 4).
(2) Set loop gain values of the servo axis specified in (1) above
which is used when the Cs contouring axis is controlled in
parameters No. 39n1, No. 39n2, No. 39n3, and No. 39n4. (There
are four stages for main gears used.)
(3) When the number of specified servo axes is less than 5, set the
remaining parameter No. 39n0 to 0 to terminate parameter
setting.
When the number of a Cs contouring axis is set to parameter No. 39n0,
the parameter is assumed to be set to 0.
NOTE
1 In general, it is difficult to set a high loop gain for a
spindle motor axis when compared with a servo
axis. These parameters are provided so that, by
changing the loop gain of a servo axis that requires
interpolation with the Cs contour axis, interpolation
control can be exercised correctly between the Cs
axis and servo axis while the spindle exercises Cs
contour control.
2 The loop gain of the servo axis is changed using
the parameter settings made for a spindle gear
selected at the time of conversion from the spindle
mode to the Cs contour control mode.
In normal use, it is unlikely that the gear of the
spindle is switched during Cs contour control.
However, note that if the gear of the spindle is
changed during Cs contour control, the loop gain of
the servo axis is not changed.
3 Even when multiple Cs axes are used with one
path (bit 7 (CSS) of parameter No. 3704 = 1), these
parameters are shared.