bnp-b2365(eng)b.pdf - 第304页
5. Spindle Adjustment 5 - 59 No. Abbr. Parameter name Details Settin g range 3061 spdiv1 Magnification for ti me constant changeover speed 1 3062 spdiv2 Magnification for ti me constant changeover speed 2 3063 spdiv3 Mag…
5. Spindle Adjustment
5 - 58
(2) Setting the multi-step acceleration/deceler ation 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 a cceleratio n/deceleration time constant : TC1 = spt
2nd stage a c celeration/deceleration time con stant : TC2 = spt × spdiv1
3rd stage acceleratio n/de celeration time const ant : TC3 = spt × spdiv2
4th stage acceleratio n/deceleration time constant : TC4 = spt × spdiv3
5th stage acceleratio n/deceleration time constant : TC5 = spt × spdiv4
6th stage acceleratio n/deceleration time constant : TC6 = spt × spdiv5
7th stage acceleratio n/deceleration time constant : TC7 = spt × spdiv6
8th stage acceleratio n/deceleration time constant : TC8 = spt × spdiv7
Multi-step acceleration/decelera tion 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
5. Spindle Adjustment
5 - 59
No. Abbr. Parameter name Details Setting range
3061 spdiv1 Magnification for time constant changeover speed 1
3062 spdiv2 Magnification for time constant changeover speed 2
3063 spdiv3 Magnification for time constant changeover speed 3
3064 spdiv4 Magnification for time constant changeover speed 4
3065 spdiv5 Magnification for time constant changeover speed 5
3066 spdiv6 Magnification for time constant changeover speed 6
3067 spdiv7 Magnification for time constant changeover speed 7
Set the acceleration/deceleration time
constant in the spindle synchronization
multi-step acceleration/deceleration
changeover speed sptc (N) to sptc
(N+1) range.
Set the time that the spindle speed
accelerates from 0 to slmit as a
magnification in respect to the spindle
synchronization
acceleration/deceleration time
constant (spt).
When spdiv7 is set, the range is sptc7
to slimit.
0 to 127
5. Spindle Adjustment
5 - 60
(3) Adjusting the multi-step acceleration/deceleration time constants
[1] Measure the acceleration/deceleration waveform to the spindle's maximum rotation speed
using S command operation. (No. 1 spindle, No. 2 spindle)
Example of spindle acceleration/deceleration wa veform
[2] Calculate the multi-step acceleration/deceleration pattern based on the acceleration/
deceleration waveform for the spindle with a long acceleration/deceleration time.
Calculation of multi-step acceleration/deceleration
[3] Set the actual acceleration/deceleration time constant in the parameters while maintaining a
50% margin from each time constant calculated in step [2].
Setting the multi-step acceleration/deceleration parameters
[4] Try spindle synchronous acceleration/deceleration operation with the actual machine, and
confirm that the speed is accelerated or decelerated at 50% or less of the load meter value. If
the load meter value exceeds 50%, adjust the time constant again.
0
Time
10000
Speed FB
(r/min)
0
Time
10000
Speed FB
(r/min)
1-step
2-step
3-step
4-step
0
Time
10000
Maintaining a 50% margin
Speed FB
(r/min)