Eds: Encoder Data Set - Siemens SINAMICS S120 Function Manual

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Basic information about the drive system

14.5 Data sets

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

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

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.

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Drive functions