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5. Spindle Adjustment
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(2) Setting the multi-step acceleration/deceleration time constant
For acceleration/deceleration control during spindle synchronous control, the acceleration/
deceleration time constant can be set up to eight steps according to the spindle rotation speed.
The acceleration/deceleration time constant (acceleration time from 0 to limit rotation speed slimit)
for each step is set as shown below based on the time constant set for the first step.
1st stage acceleration/deceleration time constant : TC1 = spt
2nd stage acceleration/deceleration time constant : TC2 = spt × spdiv1
3rd stage acceleration/deceleration time constant : TC3 = spt × spdiv2
4th stage acceleration/deceleration time constant : TC4 = spt × spdiv3
5th stage acceleration/deceleration time constant : TC5 = spt × spdiv4
6th stage acceleration/deceleration time constant : TC6 = spt × spdiv5
7th stage acceleration/deceleration time constant : TC7 = spt × spdiv6
8th stage acceleration/deceleration time constant : TC8 = spt × spdiv7
Multi-step acceleration/deceleration control for spindle synchronous control (for 4-step setting)
<Spindle specification parameters>
No. Abbr. Parameter name Details Setting range
3049 spt Spindle synchronization acceleration/deceleration
time constant
Set the acceleration/deceleration time
constant for when the spindle
synchronization command's rotation
speed changes during spindle
synchronous control.
0 to 9999
(ms)
3054 sptc1 Spindle synchronization multi-step
acceleration/deceleration changeover speed 1
3055 sptc2 Spindle synchronization multi-step
acceleration/deceleration changeover speed 2
3056 sptc3 Spindle synchronization multi-step
acceleration/deceleration changeover speed 3
3057 sptc4 Spindle synchronization multi-step
acceleration/deceleration changeover speed 4
3058 sptc5 Spindle synchronization multi-step
acceleration/deceleration changeover speed 5
3059 sptc6 Spindle synchronization multi-step
acceleration/deceleration changeover speed 6
3060 sptc7 Spindle synchronization multi-step
acceleration/deceleration changeover speed 7
Set the spindle speed for changing the
Nth step's acceleration/deceleration
time constant.
0 to 99999
(r/min)
TC2
0
TC1=s
p
t
Time
s
p
tc3
Slimit = s
p
tc4
s
p
tc1
s
p
tc2
TC3
TC4
Spindle speed