Mds: Motor Data Set - Siemens SINAMICS S120 Function Manual

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If encoder 1 (p0187) is switched over via DDS, then an MDS must also be switched over.

Switching over between several encoders

In order to be able to switch between two or more encoders using the EDS switched function,

you must connect these encoders via various Sensor Modules or DRIVE-CLiQ ports.

When using the same connection for several encoders, the same EDS and the same encoder

type must be used. In this case a switched on the analog side (e.g. of the SMC) is

recommended. A switched on the DRIVE-CLiQ side is, due to the permissible insertion cycles

and the longer times to establish DRIVE-CLiQ communication, only possible with some

restrictions.

If a motor is operated with motor encoder 1 and then later with motor encoder 2, two different

MDSs must be created with identical motor data.

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.

EDS switchover for safe motion monitoring

An encoder which is used for safety functions must not be switched over when a drive data set

(DDS) is switched over.

The safety functions check the safety-relevant encoder data for changes when data sets are

switched over. If a change is detected, fault F01670 is displayed with a fault value of 10, which

results in a non-acknowledgeable STOP A. The safety-relevant encoder data in the various

data sets must therefore be identical.

MDS: Motor Data Set

A motor data set (MDS) contains various setting parameters of the connected motor, which are

relevant when configuring the drive. It also contains certain display parameters with calculated

● Adjustable parameters, e.g.:

– Motor component number (p0131)

– Motor type selection (p0300)

– Rated motor data (p0304 ff.)

● Display parameters, e.g.:

– Calculated rated data (p0330 ff.)

Drive functions

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

Basic information about the drive system

14.5 Data sets