Siemens SIMOTICS L-1FN3 - Page 124

Configuration
5.3 Examples
1FN3 linear motors
122 Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
Figure 5-12 Example 1: Representation of the predefined variables in the distance-time diagram
The individual predefined variables are:
Traversing distance
s
MAX
= 0.26 m
Traversing time
Δt
1
= 0.21 s
Dwell time
Δt
2
= 0.18 s
Mass to be moved
(without motor mass)
m = 50 kg
Constant friction
F
r
= 100 N
Horizontal axis
F
g
= 0
In addition, a power module is to be selected and the maximum infeed power calculated.
Constraints/specification of the duty cycle
Traversing profile – Example 1
The form of the traversing profile during time Δt
1
is not explicitly specified. Therefore, a
suitable traversing profile must first be specified.
The following example shows a traversing profile that is the simplest to implement: With this
profile, only one constant acceleration phase and one constant deceleration phase are
required to reach position s
MAX
, also see the figure below. This type of traversing profile has
the shortest positioning times.