Siemens Sinamics S120 Function Manual page 402

Function modules
7.10 Connecting the motors in parallel
Figure 7-25
Motors with integrated DRIVE-CLiQ interface (SINAMICS Sensor Module Integrated) can
also be connected in parallel. The first motor is connected to DRIVE-CLiQ via the encoder.
The additional motors must be identical) Using parameter p0306 and the encoder
information obtained via DRIVE-CLiQ, it is possible to determine all the necessary motor
data.
Properties of the parallel connection in STARTER
● The rating plate and equivalent circuit diagram parameters are those of the single drive.
● The parallel data set has no code numbers. All motor data are calculated from p0306 and
● The "Motor data" screen still displays only the data for the individual motor selected.
Restrictions applicable to parallel connections
The basic governing principle of parallel connections is that the motors involved are
mechanically inter-coupled via the load. Where motors need to be decoupled from the
connection, the number of motors need to be reduced in p0306 by a DDS/MDS changeover.
Since the equivalent circuit diagram changes as a result, it may be necessary to commission
these data sets separately (e.g. motor data identification with reduced number of motors).
The power unit will otherwise apply false motor data.
An EDS changeover and e.g. 2 SMCs must be used in cases where a motor with encoder
needs to be decoupled from connections operating with encoder.
400
Selection of motors for parallel connection
the code numbers of individual motors. The same interlock mechanisms apply as to
single drives.
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions