SIEMENS
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Siemens CR 1 · 2015
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Overview
(continued)
Drive systems
SINAMICS S120 built-in devices
Motor Modules
A voltage-source DC link and an inverter for supplying a motor
are integrated in the Motor Module.
Power Modules are designed for single drives which are not ca-
pable of regenerating energy to the supply. Generated energy
produced during braking is converted to heat via braking resis-
tors.
CU320-2 Control Unit, Line Module and three Motor Modules in
booksize format
Motor Modules are designed for multi-axis drive systems and are
controlled by a CU320-2 Control Unit, a SIMOTION D4x5-2 or
CX32-2 Controller Extension. Motor Modules are interconnected
by means of a shared DC busbar. Since the Motor Modules have
a common 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 ope-
rating in motor mode. The voltage-source DC link is supplied
with mains voltage by a Line Module.
Line Modules
Line Modules generate a DC voltage from the line voltage and
supply Motor Modules with energy via the voltage-source DC
link.
Basic Line Modules
Basic Line Modules are designed only for infeed operation, i.e.
they are not capable of feeding regenerative energy back into
the supply system. If regenerative energy is produced, e.g.
when drives brake, it must be converted to heat by means of
a Braking Module and a braking resistor. When a Basic Line
Module is used as the infeed, the matching line reactor must be
installed. A line filter can be installed optionally to restrict con-
ducted interference to Class C2 limits (EN 61800-3).
Smart Line Modules
Smart Line Modules can supply energy and return regenerative
energy to the supply system. Braking Modules and braking re-
sistors are required only if the drives need to be decelerated in
a controlled manner after a power failure – i.e. when energy can-
not be regenerated into the line supply. When a Smart Line
Module is used as the infeed, the matching line reactor must be
installed. A line filter can be installed optionally to restrict con-
ducted interference to Class C2 limits (EN 61800-3).
~
=
G_D211_XX_00043
Motor
Module
Line
Module
Control
Unit
=
~
M
3 ~
=
~
M
3 ~
DRIVE-CLiQ
M
3
=
G_D211_EN_00032a
Switch disconnector
and fuses or
circuit-breaker
Line
reactor
Line filter
Line
contactor
Basic Line
Module
Motor
Module
. . .
M
3
=
. . .
Motor
Module
Smart Line
Module
Line
contactor
Line
filter
Line
reactor
Switch
disconnector
and fuses
G_D211_EN_00033a
© Siemens AG 2015