Motor Changeover - Siemens SINAMICS S120 Function Manual

12.5

Motor changeover

Description
The motor changeover is used in the following cases, for example:
● Changing over between different motors and encoders
● Changing over different windings in a motor (e.g. star-delta changeover)
● Adapting the motor data
If several motors are operated alternately on a Motor Module, a matching number of drive
data sets must be created.
Note
Vector control
For vector control, to switch to a rotating motor the "flying restart (Page 271)" function must
be activated (p1200).
Note
When changing over the drive data set between several motors that physically exist with
integrated holding brakes, it is not permissible that the internal brake control is used.
Example of a motor changeover for four motors (encoderless)
Requirements
● The first commissioning has been completed.
● 4 motor data sets (MDS), p0130 = 4
● 4 drive data sets (DDS), p0180 = 4
● 4 digital outputs to control the auxiliary contactors
● 4 digital inputs to monitor the auxiliary contactors
● 2 digital inputs for selecting the data set
● 4 auxiliary contactors with auxiliary contacts (1 NO contact)
● 4 motor contactors with positively driven auxiliary contacts (3 NC contacts, 1 NO contact)
● 4 motors, 1 Control Unit, 1 infeed, and 1 Motor Module
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Applications
12.5 Motor changeover
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