Siemens SINAMICS S120 Installation And Start-Up Manual page 22

System Overview
Overview
New system architecture with a central Control Unit
Electronically coordinated individual drives work together to perform your drive
tasks. Higher-level controllers operate the drives to achieve the required coordi-
nated movement. This requires cyclic data exchange between the controller and all
the drives. This exchange always had to take place via a field bus, which required
a great deal of time and effort for installation and configuration. SINAMICS S120
takes a different approach. A central Control Unit controls the drive for all con-
nected axes and also establishes the technological links between the drives and
axes. Since all the required data is stored in the central Control Unit, it does not
need to be transferred. Cross-axis connections can be established within a Control
Unit and easily configured in the STARTER commissioning tool using a mouse.
Simple technological tasks can be carried out automatically by the SINAMICS
S120 Control Unit. For complex technological tasks, the user-programmable mod-
ules in the SIMOTION D product spectrum are used instead.
DRIVE-CLiQ – a digital interface between all components
All SINAMICS S120 components, including the compact asynchronous motors and
encoders, are interconnected via a joint serial interface called DRIVE-CLiQ. The
standardized cables and connectors reduce the variety of different parts and cut
storage costs.
Converter boards (sensor modules) for converting standard signals to DRIVE-CLiQ
are available for motors without an integrated DRIVE–CliQ interface.
Electronic type plate in all components
All SINAMICS S120 components have an electronic type plate, which contains all
the relevant data about that particular component. In the compact asynchronous
motors with a DRIVE-CLiQ interface, this data includes the parameters of the elec-
tric equivalent circuit diagram and the built-in motor encoder. The Control Unit re-
cords this data automatically via DRIVE-CLiQ so that it does not need to be en-
tered during commissioning or if the equipment is replaced.
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E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition