Siemens SINUMERIK 840D Function Manual page 381

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 12-6
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
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 and jerk
12.2 Functions
). Consequently, 15 % of the
15%a
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