Siemens SINAMICS G150 Operating Instructions Manual page 262

Operation
6.3 Basic information about the drive system
Parameter categories
The parameters for the individual drive objects (see "Drive objects") are categorized
according to data sets as follows (see "Operation/data sets"):
● Data-set-independent parameters
● Data-set-dependent parameters
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These parameters exist only once per drive object.
These parameters can exist several times for each drive object and can be addressed via
the parameter index for reading and writing. A distinction is made between various types
of data set:
– CDS: Command data set
By parameterizing several command data sets and switching between them, the drive
can be operated with different pre-configured signal sources.
– DDS: Drive data set
The drive data set contains the parameters for switching between different drive
control configurations.
– PDS: Powerstack Data Set
The number of powerstack data sets corresponds to the number of power units
combined for units that are connected in parallel.
The CDS and DDS can be switched over during normal operation. Further types of data
set also exist, however these can only be activated indirectly by means of a DDS
changeover.
– EDS: encoder data set
– MDS: Motor data set
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A