
B–63503EN–1/01
9. SPINDLE SPEED FUNCTION
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Refer to the manual of serial spindle.
These signals determine what parameter (loop gain, etc.) to be used for
each gear position.
CTH1A and CTH2A are the gear select signals for the serial spindle, but
GR1 and GR2 must also be set. Do not change these signals while in the
Cs contour control mode.
Relationship between gears selected and spindle gear select signals
CNC side
T/M series with CSSC M series without CSSC
GR2 GR1 Gear selection GR3O GR2O GR1O Gear selection CTH1A CTH2A Gear selection
0 0 1st stage 0 0 1 1st stage 0 0 1st stage
0 1 2nd stage 0 1 0 2nd stage 0 1 2nd stage
1 0 3rd stage 1 0 0 3rd stage 1 0 3rd stage
1 1 4th stage 1 1 4th stage
CSSC: Constant surface speed control
NOTE
1 When the spindle gear select method is M type in M series,
and parameter No. 3706#4 GTT=0, GR1 and GR2 do not
need to be input. Input CTH1A and CTH2A when gears are
changed using GR1O, GR2O and GR3O.
2 The above combination of clutch/gear signals CTH1A and
CTH2A is an example.
The serial spindle gear is selected by CHT1A and CHT2A
independently of gear selection on the CNC side. So, enter
necessary signals, and set the corresponding serial spindle
parameters.
[Classification] Output signal
[Function] This signal indicates that a reference position return has been made for the
Cs contour control axis.
[Output condition] If a manual reference position return or automatic reference position
return by G28 is performed during the Cs contour control mode, this
signal becomes logical 1 when the Cs contour control axis reaches the
reference position.
Clutch/Gear signal
(Serial spindle)
CTH1A, CTH2A
<G070#3, #2>
Cs contour control axis
reference position return
completion signal
ZPx <F094>