
B–64113EN–1/01
9. SPINDLE SPEED FUNCTION
596
In addition to the conventional (first) spindle, second and third spindles
can be controlled. These additional spindles allow two-stage gear
changes. A single S code is used to command to any of these spindles. The
spindle to be commanded by S code is determined by a signal from the
PMC. The second and third spindle can change gears in 2 stages.
Also, the maximum clamp spindle speed can be individualy set to each
spindle to clamp the spindle speed of each spindle (set by parameters No.
3772, 3802, 3822).
When the second spindle is used, a second position coder interface
channel is added. Selection between 1st position coder to 4th position
coder is made by a signal from PMC. (The conventional and additional
position coders are referred to as the first position coder and second
position coder, respectively, throughout the remainder of this discussion.)
The signal from the PMC selects one of the first, second and third position
coders.
The spindle serial output function is required to use multi-spindle control.
If the third spindle (serial spindle) are needed, specify the third spindle
serial output function.
D For the M series, multi–spindle control is possible only when spindle
gear selection type T is selected (when the constant surface speed
control is provided, or when GTT (bit 4 of parameter No. 3706) is set
to 1).
D For the M series, rigid tapping spindle selection signals RGTSP1 and
RGTSP2 (G061#4 and #5, when bit 7 of parameter No. 5200 is set to
1) cannot be used. For details of rigid tapping, see Section 9.10.
Two multi-spindle control methods are available. Type A allows the
SIND function (controlling the spindle motor speed based on the PMC)
to be used only for the first spindle. Type B allows the SIND function to
be used for each of the two spindles independently.
9.9
MULTI–SPINDLE
CONTROL
General
Difference in
multi–spindle control
between the M and T
series
Control