Siemens SINAMICS Series Operating Instructions Manual page 356

Operation
9.1 Basic information
DDS: Drive data set
A drive data set contains various adjustable parameters that are relevant for open-loop and
closed-loop drive control:
● Numbers of the assigned encoder data sets:
– p0187 and p0188: Up to 2 assigned encoder data sets (EDS)
● Various control parameters, e.g.:
– Speed limits min./max. (p50512, p50513)
– Characteristic data of ramp-function generator (p50295 ff)
– Characteristic data of controller (p50540 ff)
– ...
The parameters that are grouped together in the drive data set are identified in the
SINAMICS DCM List Manual by "DDS" and are provided with index [0...n].
It is possible to parameterize several drive data sets. You can switch easily between different
drive configurations (control type, motor, encoder) by selecting the corresponding drive data
set.
A drive object can manage 4 drive data sets.
Binector inputs p0820 and p0821 are used to select a drive data set. They represent the
number of the drive data set (0 to 3) in binary format (where p0821 is the most significant
bit).
● p0820 BI: Drive data set selection DDS, bit 0
● p0821 BI: Drive data set selection DDS, bit 1
EDS: Encoder data set
An encoder data set contains various adjustable parameters for the connected encoder that
are relevant for configuring the drive.
● Adjustable parameters, e.g.:
– Encoder interface component number (p0141)
– Encoder component number (p0142)
– Encoder type selection (p0400)
The parameters that are grouped together in the encoder data set are identified in the
parameter list by "EDS" and are provided with index [0...n].
A separate encoder data set is required for each encoder controlled by the Control Unit. Up
to 2 encoder data sets are assigned to a drive data set via parameters p0187 and p0188.
It is only possible to switch an encoder data set by means of a DDS switchover. When a
drive data set is selected, the assigned encoder data sets are selected automatically.
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SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A