Mitsubishi MELDAS MDS-C1 Instruction Manual page 243

(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
Slimit = sptc4
sptc3
sptc2
Spindle speed
sptc1
0
Multi-step acceleration/deceleration control for spindle synchronous control (for 4-step setting)
<Spindle specification parameters>
No. Abbr.
Spindle synchronization acceleration/deceleration
3049 spt
time constant
Spindle synchronization multi-step
3054 sptc1
acceleration/deceleration changeover speed 1
Spindle synchronization multi-step
3055 sptc2
acceleration/deceleration changeover speed 2
Spindle synchronization multi-step
3056 sptc3
acceleration/deceleration changeover speed 3
Spindle synchronization multi-step
3057 sptc4
acceleration/deceleration changeover speed 4
Spindle synchronization multi-step
3058 sptc5
acceleration/deceleration changeover speed 5
Spindle synchronization multi-step
3059 sptc6
acceleration/deceleration changeover speed 6
Spindle synchronization multi-step
3060 sptc7
acceleration/deceleration changeover speed 7
5. Spindle Adjustment
TC1=spt
TC2
TC3
TC4
Parameter name
5 - 33
Details
Set the acceleration/deceleration time
constant for when the spindle
synchronization command's rotation
speed changes during spindle
synchronous control.
Set the spindle speed for changing the
Nth step's acceleration/deceleration
time constant.
Time
Setting range
0 to 9999
(ms)
0 to 99999
(r/min)