Specifying The Number Of Secondary Sections - Siemens SIMOTICS L-1FN3 Configuration Manual

Configuration
5.2 Configuring workflow
As an example, the above figure shows some points of the motor force - velocity
characteristic curve at times t
of a primary section:
● t
limit characteristic of the motor.
● t
characteristic of the motor. However, it must be carefully checked whether the motor can
be operated at overload for as long as is required for the duty cycle.
● t
this case, you must select another primary section at which the point t
force - velocity characteristic curve.
Note
Current does not flow evenly through all phases in all operating states of the motor, e.g.:
• motor stopped but energized, e.g. for:
• Low velocities (< 0.5 m/min)
• Cyclic traversing distances less than the pole width
With persistent uneven loading, the motor must only be operated at about 70% of the
rated force, see F
For precise dimensioning, please contact your local Siemens office.
5.2.5

Specifying the number of secondary sections

Basics
Irrespective of the length, the secondary sections must have the same magnetic track width
as the selected primary section. This is guaranteed by making a selection based on the
article number The positions of the article number that indicate the motor size must match.
The number of required secondary sections depends on:
● The desired traversing distance
● The drive arrangement
116
: This point is not critical, as it is below the rated force F
1
, t : These are permissible operating points, as they lie within the voltage limit
2 3
: If such a point occurs, the required motor force cannot be achieved at this velocity. In
4
– Compensation of a weight
– Start up against a brake system (damping and impact absorption elements)
* in the data sheets.
0
... t in comparison with the force - speed characteristic curve
1 4
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
and is also within the voltage
N
lies below the
4
1FN3 linear motors