Eds: Encoder Data Set - Siemens SINAMICS S120 Function Manual

Drive functions
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Binector inputs p0820 to p0824 are used to select a drive data set. They represent the
number of the drive data set (0 to 31) in binary format (where p0824 is the most significant
bit).
● p0820 BI: Drive data set selection DDS, bit 0
● p0821 BI: Drive data set selection DDS, bit 1
● p0822 BI: Drive data set selection DDS, bit 2
● p0823 BI: Drive data set selection DDS, bit 3
● p0824 BI: Drive data set selection DDS, bit 4
Supplementary conditions and recommendations
● Recommendation for the number of drive data sets for a drive
The number of drive data sets for a drive should correspond to the options for
changeover. The following must therefore apply:
p0180 (DDS) ≥ max. (p0120 (PDS), p0130 (MDS))
● Max. number of DDS for one drive object = 32 DDS
13.5.3

EDS: Encoder Data Set

An encoder data set (EDS) contains various adjustable parameters of the connected
encoder, which are relevant for configuring the drive; 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 "Data Set EDS" and are assigned an index [0...n].
A separate encoder data set is required for each encoder controlled by the Control Unit. Up
to three encoder data sets are assigned to a drive data set via parameters p0187, p0188,
and p0189.
An encoder data set can only be changed over using a DDS switchover.
An encoder data set switchover without pulse inhibit (motor is being fed with power) may
only be performed on adjusted encoders (pole position identification has been carried out or
the commutation angle determined for absolute encoders).
Each encoder must only be assigned to one drive.
Using a power unit for the alternating operation of several motors would be an EDS
switchover application. Contactors are switched over so that the power unit can be
connected to the different motors. Each of the motors can be equipped with an encoder or
can also be operated without an encoder. Each encoder must be connected to its own SMx.
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Basic information about the drive system
13.5 Data sets
959

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