SIEMENS
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Siemens D 21.4 · 2017
System overview
SINAMICS S120 drive system
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Overview
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DRIVE-CLiQ – the digital interface between all components
All SINAMICS S120 components, including the motors and en-
coders, are interconnected by a shared 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 encoder sig-
nals to DRIVE-CLiQ are available for third-party motors or retrofit
applications.
Swift and automatic: The electronic rating plate
An important digital linkage element of the SINAMICS S120
drive system are the electronic type plates integrated in every
component. They allow all drive components to be detected
automatically via a DRIVE-CLiQ link. As a result, data do not
need to be entered manually during commissioning or compo-
nent replacement – helping to ensure that drives are commis-
sioned successfully! The electronic rating plates of the motors
contain, for example, the parameters of the electrical equivalent
circuit diagram and the characteristic data of the built-in motor
encoder in addition to information such as order and identifi-
cation numbers.
Modular design ensures flexibility and scalability
DC/AC units (Motor Modules) – available in compact booksize,
booksize and chassis formats – are characterized by their
modular design. All the drive intelligence is organized into
Control Units. The Control Units perform all the closed-loop
control functions for the drive line-up. They also handle all other
drive functions such as the interconnection of drive-related I/Os,
positioning functions, and feature PROFIBUS DP or PROFINET
as the central interface for linking to higher-level automation
systems.
Line Modules function as the central energy supply to the volt-
age-source DC link. Line Modules are optionally available with
regulated infeed/regenerative feedback to provide a constant
DC link voltage and high level of supply compatibility. Motor
Modules supply the motors with energy from the DC link.
On AC/AC units, the infeed and motor power supply functions
are combined in one device, the Power Module – available in
blocksize and chassis formats. For single-axis applications,
drive control functions are performed by a special Control Unit
(CU310-2) mounted on the Power Module and for multi-axis
applications, by a Control Unit (e.g. CU320-2) connected by a
DRIVE-CLiQ link. In this case, a Control Unit Adapter is mounted
on the Power Module in place of the Control Unit.
SINAMICS S120 blocksize, booksize compact, booksize and chassis formats
© Siemens AG 2017