Parameterization - Siemens SINUMERIK 840D sl Function Manual

1:
2:
a
max
v
max
t:
Figure 5-2
The effect of the constant travel time can be seen from the figure above:
● Time: t
End of acceleration phase with sudden acceleration 1 * a
● Interval: t
Acceleration 0; constant velocity using the parameterized constant travel time
● Time: t
Start of braking phase with sudden acceleration 1 * a
The times t
constant travel time been defined.
5.2.2.2

Parameterization

The constant travel time is parameterized for specific channels using machine data:
MD20500 $MC_CONST_VELO_MIN_TIME
(minimum time with constant velocity)
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Characteristic with constant travel time
Characteristic without constant travel time
: Maximum acceleration value
: Maximum velocity value
Time
Schematic for abrupt acceleration
1
- t
1 2
2
, t ' and t ' indicate the characteristic that would have been produced had no
0 1 2
B2: Acceleration
max
max
5.2 Functions
249