Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Functions, monitoring and protective functions
9.4 Extended functions
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
673
Example with a measuring gear
Figure 9-46 Configuration with measuring gear between the motor and encoder
The diagram shows an application example for referencing with several zero marks per
revolution with a measuring gear located between the motor/load and encoder.
As a result of the measuring gear, several encoder zero marks appear within one motor/load
revolution. Using the BERO signal, the correct zero mark for referencing can be selected
from the several encoder zero marks.
Preconditions
● The position of the zero mark that has the shortest distance to the position when the
BERO signal switches is to be determined.
● The appropriate mechanical preconditions must be fulfilled when mounting the BERO.
● Preferred mechanical configuration
The BERO signal covers the zero mark, as in this case, the zero mark selection is
independent of the direction of rotation.
● In order to be able to precisely determine the position of the BERO (in relation to the
reference position of the encoder) even at higher speeds, this must be connected to a
fast Control Unit input.