B2: Acceleration
4.2 Functions
4.2.2
Acceleration without jerk limitation (BRISK/BRISKA) (channel-/axis-specific)
4.2.2.1
General Information
General Information
In the case of acceleration without jerk limitation (jerk = infinite) the maximum value is applied for acceleration
immediately. As regards acceleration with jerk limitation, it differs in the following respects:
•
Advantages
Shorter processing times with the same maximum values for velocity and acceleration.
•
Disadvantages
Increased load on the machine's mechanical components and risk of inducing high-frequency and difficult-to-
control mechanical vibrations.
Acceleration profile
a
:
Maximum acceleration value
max
v
:
Maximum velocity value
max
t:
Time
Figure 4-1
Velocity and acceleration schematic for stepped acceleration profile
218
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions