Functions
2.1 Acceleration without jerk limitation (BRISK/BRISKA) (channel-/axis-specific)
Basic logic functions: Acceleration (B2)
10 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Acceleration profile
WWW
D
PD[
D
D
PD[
Y
PD[
W
W
Y
Figure 2-1 Velocity and acceleration schematic for stepped acceleration profile
a
max
: Maximum acceleration value
v
max
: Maximum velocity value
t: Time
The following features of the acceleration profile can be identified from the figure above:
• Time: t
0
Sudden acceleration from 0 to +a
max
• Interval: t
0
- t
1
Constant acceleration with +a
max
; linear increase in velocity
• Time: t
1
Sudden acceleration from 2 * a
max
with immediate switchover from acceleration to braking
Note
The sudden acceleration can normally be avoided by specifying a constant velocity time
(see Section: "Sudden acceleration with constant velocity phase").
• Interval: t
1
- t
2
Constant acceleration with -a
max
; linear decrease in velocity
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