Parameterization - Siemens SINUMERIK 840D Function Manual

1:
2:
a
max
v
max
t:
Figure 12-2
The above figure shows the effect of the constant traversing time:
● Instant: t
End of the acceleration phase with acceleration jump 1 * a
● Interval: t
Acceleration 0; constant velocity over the parameterized constant traversing time
● Instant: t
Start of the braking phase with acceleration jump 1 * a
The instants t
constant traversing time.
12.2.2.2

Parameterization

The constant travel time is parameterized for specific channels using machine data:
MD20500 $MC_CONST_VELO_MIN_TIME
(minimum time with constant velocity)
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Curve with constant traversing time
Curve without constant traversing time
: Maximum acceleration value
: Maximum velocity value
Time
Principle characteristic for an abrupt acceleration
1
- t
1 2
2
, t ' and t ' indicate the associated curve that would have resulted without
0 1 2
B2: Acceleration and jerk
12.2 Functions
max
max
353