Checking The Dynamic Mass; Selecting The Power Module - Siemens SIMOTICS L-1FN3 Configuration Manual

The velocity in areas of reduced magnetic coverage should not exceed 25% of the rated
velocity v
The area of reduced magnetic coverage should be used only to approach parking or service
positions, but not for machining. When using a Hall sensor box (HSB) for position
identification, it must be carefully ensured that when the system is switched on the HSB is
located above the magnets of the secondary section track, and the primary section can
move as a result of its own force.
The drive is normally operated position-controlled. As the loss of motor force changes the
behavior of the control circuit, stable operation can only be achieved when the value of the
position controller gain k
The appropriate k
machine. It can only be determined by tests during commissioning. Searching for a suitable
value of k
5.2.7

Checking the dynamic mass

Procedure
The dynamic mass of the motor or the axis is determined at the latest after the secondary
sections have been selected. With this data, the assumptions specified as mechanical
supplementary conditions can be checked. When the mass of the motor assumed there
differs considerably from the actual mass of the motor, a new calculation of the load cycle is
required.
5.2.8

Selecting the power module

The required power modules are selected according to the peak and continuous currents
that occur in the duty cycle. If several primary sections are operated in parallel on one power
module, then the sum values of the continuous and peak currents must be taken into
account.
1FN3 linear motors
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
.
MAX,FN
is reduced.
V
value for each case depends on the mechanical design of the respective
V
should start with 5% of its value for full magnetic coverage.
V
Configuration
5.2 Configuring workflow
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