B–64113EN–1/01
9. SPINDLE SPEED FUNCTION
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The address for the move command in Cs contour control is the axis name
specified in parameter no.1020. This address is arbitrary.
When the second auxiliary function is provided, address B cannot be used
for the name of the contour axis. For the T series machines, when either
address A or C is used for the name of the contour axis, clear CCR
(parameter no. 3405#4) to “0”.
Up to three servo axes can be specified for linear interpolation against the
Cs contour control axis, by setting defined parameters :
D When no servo axis is used for interpolation, specify “0” in parameter
nos. 3900, 3910, 3920, 3930, 3940.
D When one or more servo axes are used for interpolation, set the
parameter for each as follows :
(1)Assign the axis number (1 to 4) to each of the servo axes used for
interpolation in parameter nos. 39n0 (n=0, 1, or 2).
(2)Set the loop gain for each of the servo axes specified in (1) in parameter
nos. 39n1, 39n2, 39n3, 39n4. The loop gain must be the position loop
gain for the Cs contour control axis or a desired value. Four parameters
are provided to correspond to the four gears of the spindle. Use those
parameters according to the inputs of the serial spindle clutch /gear
signal CTH1A, CTH2A <G70#3, #2>.
NOTE
The fine acceleration/deceleration function cannot be used
between the servo axis and Cs contour control axis.
(3)When the number of servo axes to be used for interpolation is smaller
than three, set “0” in remaining parameter nos. 39n0.
- Switching from spindle speed control to Cs contour control
The serial spindle is put in the Cs contour control mode by setting
the DI signal CON (G027#7) to “1”. When the mode is switched
while the spindle is rotating, the spindle stops immediately to per-
form the change.
- Switching from Cs contour control to spindle speed control
Turning the DI signal CON (G027#7) to “0” puts the serial spindle
in spindle speed control mode. Confirm that the move command
for the spindle has been completed, then specify the switch. If it
is switched while the spindle is moving, the machine enters
interlock, or excessive position deviation alarm occurs.
Command Address
Setting Axes that
interpolate with Cs
contour axis
Switching spindle
speed control/Cs
contour control