Functions; Acceleration Without Jerk Limitation (Brisk/Briska) (Channel/Axis-Specific); General Information - Siemens SINUMERIK 840D sl Function Manual

5.2

Functions

5.2.1

Acceleration without jerk limitation (BRISK/BRISKA) (channel/axis-specific)

5.2.1.1

General Information

General Information
In the case of acceleration without jerk limitation (jerk = infinite) the maximum value is applied
for acceleration immediately. As regard to 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
max
v
max
t:
Figure 5-1
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
: Maximum acceleration value
: Maximum velocity value
Time
Velocity and acceleration schematic for stepped acceleration profile
B2: Acceleration
5.2 Functions
245