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Siemens D 21.4 · 2017
SINAMICS S120 drive system
Chassis format
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Overview
(continued)
Active Line Modules
Active Line Modules can supply energy and return regenerative
energy to the supply system. A Braking Module and braking
resistor are required only if the drives need to be decelerated
in a controlled manner after a power failure (i.e. when energy
cannot be recovered to the supply).
In contrast to Basic Line Modules and Smart Line Modules,
Active Line Modules generate a controlled DC voltage that is
kept constant despite fluctuations in the line supply voltage if the
line supply voltage fluctuates within the permitted tolerance
range. Active Line Modules draw a virtually sinusoidal current
from the supply which limits any harmful harmonics. All of the
components necessary to operate an Active Line Module are
integrated in the Active Interface Module.
A line filter can be optionally installed in order to ensure com-
pliance with the limits stipulated for Category C2 in EN 61800-3.
Motor Modules
A voltage DC link and an inverter for supplying a motor are
integrated in the Motor Module.
Motor Modules are designed for multi-axis drive systems and are
controlled by either a CU320-2 or a SIMOTION D Control Unit.
Motor Modules are interconnected through the DC link.
One or several Motor Modules are supplied with energy for the
motors via the DC link. Both synchronous and induction motors
can be operated.
Since the Motor Modules share the same DC link, they can
exchange energy with one another, i.e. if one Motor Module
operating in generator mode produces energy, the energy can
be used by another Motor Module operating in motor mode. The
DC link is supplied with line supply voltage by a Line Module.
Control Units
The control intelligence for all the drive axes integrated in the
multi-axis group is combined in the Control Units. They also
feature drive-related inputs/outputs and interfaces for communi-
cating with higher-level controllers. Control Units are available
with different ranges of functions and with different performance
levels.
System components
The structure of the drive system is defined by selecting the
Control Unit and Power Module or Line Module and Motor
Modules. The additional components provided allow optimum
adaptation of the drive system to the application.
These components are subdivided into:
•
Line-side components
, e.g. line reactors and line filters
•
DC link components
e.g. Braking Modules and braking
resistors
•
Motor-side components
, e.g. motor reactors and dv/dt filters
plus VPL, sine-wave filters
•
Supplementary system components
, e.g. Terminal
Modules, Operator Panels, and Communication Boards
•
Encoder system interface
for connecting various encoder
types to SINAMICS S120
DRIVE-CLiQ – the digital interface between the components
SINAMICS S120 components, including motors and encoders,
are equipped with the high-performance DRIVE-CLiQ system
interface.
Line and Motor Modules for example are connected to the
Control Unit – and Terminal Modules and Sensor Modules to the
drive system via DRIVE-CLiQ – simply and efficiently. Motors that
also have this interface can be directly connected to the drive
system.
Converter boards (Sensor Modules) for converting standard
encoder signals to DRIVE-CLiQ are available for third-party
motors or retrofit applications.
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 automatically
identified via the DRIVE-CLiQ link.
The electronic type plate contains all the relevant technical data
about that particular component. In addition to the technical
data, the electronic type plate includes logistical data (manufac-
turer ID, article number and ID). Since this data can be called up
electronically on site or remotely, all the components used in a
machine can always be individually identified, which helps
simplify servicing.
. . .
Motor
Module
Active
Interface
Module
Active Line
Module
Switch disconnector
and fuses or
circuit-breaker
G_D211_EN_00035b
Line filter
M
3
=
~
=
G_D211_XX_00043
Motor
Module
Line
Module
Control
Unit
=
~
M
3 ~
=
~
M
3 ~
DRIVE-CLiQ
© Siemens AG 2017