Siemens SINUMERIK 840D sl Function Manual page 277

Substitute characteristic curve with linear path sections
Limitation to this value is applied if the programmed path velocity is greater than that at which
15 % of the maximum acceleration capacity is still available (v
maximum acceleration capacity/motor torque always remains available, whatever the
machining situation.
①
②
③
a :
ers
a
15%
v
ers
v
prog
v
15%a
Figure 5-10
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Normal range
Reducing range
Locked area
Substitute characteristic curve constant acceleration
Minimal constant acceleration
a = 0.15 * (a - a ) + a
15% max red
Substitute characteristic curve velocity
Programmed velocity
Velocity at a
15%
Substitute path characteristic curve: Linear path
red
B2: Acceleration
5.2 Functions
). Consequently, 15 % of the
15%a
277