Mitsubishi Electric M800 Series Manual page 565

M800/M80/E80/C80 Series Alarm/Parameter Manual
16 Machine Parameters
#3020 stapt 4
Set the time constant for synchronous tapping 1st step linear acceleration/deceleration control when gear 11
is selected. (linear acceleration/deceleration pattern)
---Setting range---
1 to 5000 (ms)
< Relation of spindle limit rotation speed and spindle maximum rotation speed >
The spindle rotation speed which can be attained at the spindle motor's maximum rotation speed is set for the limit rotation
speed (slimt). This value is obtained by multiplying the gear ratio on the spindle motor maximum rotation speed (SP026).
Set the maximum rotation speed (smax) when the rotation speed is to be limited according to the machine specifications,
such as the spindle gear specifications. Up to four value can be set for gear changeover.
< Synchronous tapping multi-step acceleration/deceleration control parameter >
The acceleration/deceleration control can be set up to three steps in synchronous tapping 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.
Set the inclination for 2nd step or subsequent steps when the maximum rotation speed exceeds the base rotation speed
during synchronous tapping control.
When the inclination is not set after 2nd step or it is higher than that of 1st step, the acceleration/deceleration control is
executed with the same inclination as the 1st step for all the rotation speed.
IB-1501279-H
SP026
0
smax slimt1 smax2 1
Spindle rotation speed (r/min)
slimit1=10000
10000
8000
6000
4000
taps21=3000
2000
stap1=1500
0
stapt1=300
tapt21=900
Synchronous tapping 1st step acceleration/decelera-
tion time constant (Gear: 11)
slimt2 smax(n)
0 1000 2000 3000 4000
0
Time [ms]
tapt31=5000
548
slimt(n)