Siemens SINUMERIK 828D Function Manual page 250

B2: Acceleration
4.2 Functions
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
capacity/motor torque always remains available, whatever the machining situation.
a : Substitute characteristic curve constant acceleration
ers
a : Minimal constant acceleration
15%
a = 0.15 * (a
15%
v : Substitute characteristic curve velocity
ers
v : Programmed velocity
prog
v : Velocity at a
15%a 15%
Figure 4-10 Substitute path characteristic curve: Linear path
250
- a ) + a
max red red
). Consequently, 15 % of the maximum acceleration
15%a
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions