Inserting Measuring Systems; Overview - Siemens SINAMICS S120 Commissioning Manual

Commissioning
4.4 Creating a project offline in Startdrive
4.4.7

Inserting measuring systems

4.4.7.1

Overview

Definition
For encoders, a distinction is made between two basic measuring system types:
● Motor encoders are normally mounted on the motor shaft so that motor motion (angle of
rotation, rotor position, etc.) can be directly measured. Motor encoders supply the speed
actual value that is incorporated in the closed-loop control (closed-loop speed and current
control), so that for fast controllers, the actual speed value must also be supplied fast
enough. This is the reason that high quality encoders must be used for motor encoders.
– Siemens motors that have already been configured are created in the device view with
– DRIVE-CLiQ motors are inserted together with an encoder. The drive and encoder
● Machine encoders are installed in the machine. Using machine encoders, for example,
you synchronize the speed of a belt to another belt, or you determine the position of a
workpiece. Basic, mounted encoders can be used in this case as these values are
normally not required in a fast speed controller or current controller cycle.
120
the matching encoder and the encoder evaluation.
parameters are transferred when you then load the configuration to the drive
(download). The correct motor and encoder configuration are available offline in the
project after an upload.
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1