Efficient Networks Siemens Sinamics S120 - Manual (Page 473)

Basic information about the drive system
12.2 Data sets
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
473
can also be operated without an encoder (sensorless operation). Each encoder must be
connected to its own SMx.
If encoder 1 (p0187) is changed over via DDS, then an MDS must also be changed over.
One drive object can manage up to 16 encoder data sets. The number of encoder data sets
configured is specified in p0140.
When a drive data set is selected, the assigned encoder data sets are also selected.
12.2.4 MDS: Motor Data Set
MDS: Motor Data Set
A motor data set contains various adjustable parameters describing the connected motor for
the purpose of configuring the drive (see table 6-2). It also contains certain visualization
parameters with calculated data.
● Adjustable parameters, e.g.:
– Motor component number (p0131)
– Motor type selection (p0300)
– Rated motor data (p0304 ff)
– ...
● Visualization parameters, e.g.:
– Calculated rated data (p0330 ff)
– ...
The parameters that are grouped together in the motor data set are identified in the
SINAMICS S List Manual by "Data Set MDS" and are assigned an index [0..n].
A separate motor data set is required for each motor that is controlled by the Control Unit via
a Motor Module. The motor data set is assigned to a drive data set via parameter p0186.
A motor data set can only be changed using a DDS changeover. The motor data set
changeover is, for example, used for:
● Switching over different motors
● Switching over different windings in a motor (e.g. star-delta switchover)
● Adapting the motor data
If several motors are operated alternately on a Motor Module, a matching number of drive
data sets must be created. For further information about motor changeover, see the "Motor
switchover" section in the Function Manual.
One drive object can manage up to 16 motor data sets. The number of motor data sets in
p0130 must not exceed the number of drive data sets in p0180.
For the 611U interface mode (p2038 = 1), the drive data sets are divided into groups of eight
(1-8; 8-16;...). Within a group, the assignment to the motor data set must be identical:
p0186[0] = p0186[1] = ... = p0186[7]
p0186[8] = p0186[9] = ... = p0186[15]