Mitsubishi Electric C80 Series, Manual

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M800/M80/E80/C80 Series Alarm/Parameter Manual
16 Machine Parameters
549 IB-1501279-H
< Spindle synchronization multi-step acceleration/deceleration control parameter >
The acceleration/deceleration control can be set up to eight steps in spindle synchronization control to carry out an optimal
acceleration/deceleration control in accordance with the spindle motor characteristics whose output torque steps down
when exceeding the base rotation speed and further attenuate in output stepdown zone.
For 2nd step or subsequent steps, the specification allows to set the time constant magnification and changeover rotation
speed based on the acceleration/deceleration setting of the 1st step.
Set the value of limit rotation speed or higher as the changeover rotation speed for the step not to be shifted when not car-
rying out a step shift.
Not used. Set to "0".
Set the deceleration rate of the encoder to the spindle when inputting ABZ pulse output encoder feedback to
NC during analog spindle control.
0: 1/1
1: 1/2
2: 1/4
3: 1/8
---Setting range---
0 to 3
#3021
#3022 sgear Encoder gear ratio
4000
6000
8000
sptc7=9200
sptc6=8200
sptc5=7200
sptc4=6000
sptc3=4800
sptc2=3000
sptc1=1000
0
spt=400
slimit1=10000
1200(=spt * spdiv1 = 400 * 3)
2000(=spt * spdiv2 = 400 * 5)
2800(=spt * spdiv3 = 400 * 7)
4000(=spt * spdiv4 = 400 * 10)
5600(=spt * spdiv5 = 400 * 14)
8000(=spt * spdiv6 = 400 * 20)
11200(=spt * spdiv7 = 400 * 28)
0 2000 3000 4000 1000
10000
2000
Time [ms]
Spindle rotation speed [r/min]