SIEMENS
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Siemens CR 1 · 2015
6
Drive systems
SINAMICS S120 Cabinet Modules
Active Line Modules including Active Interface Modules
■
Overview
Active Line Modules can supply energy and return regenerative
energy to the supply system.
Active Line Modules generate a regulated DC voltage that is
kept consistent regardless of fluctuations in the line voltage
(the line voltage must range within the permissible tolerances).
Active Line Modules draw a virtually sinusoidal current from the
supply system and therefore do not cause any harmful current
harmonics.
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. if energy cannot be recovered to the supply.
For further information about these components, see Catalog
D 21.3.
Up to 4 identical Active Line Modules can be connected in par-
allel to increase the power and to provide a redundant configu-
ration.
Active Line Modules are available for the following voltages and
power ratings:
■
Design
Active Line Modules are always operated together with an Active
Interface Module, which contains the associated Clean Power
Filter and pre-charging circuit. The integrated line filter ensures
compliance with the EMC requirements for the "second environ-
ment".
The Active Line Module and Active Interface Module are sup-
plied as a complete, fully wired unit, i.e., the customer does not
need to supply any further cables or carry out any other wiring
tasks.
Parallel connection of Active Line Modules to increase
power rating
For configuring a drive line-up with higher outputs,
Active Line Modules are available, which can be operated in pa-
rallel on a common Line Connection Module. Up to 4 identical
Active Line Modules can be arranged to the left and right of the
Line Connection Module. Up to 2 Active Line Modules each can
be arranged on the left and right.
The power connections on the Active Line Module on the left of
the Line Connection Module are a mirror image (Article No. with
"
C
" in the next to last position, example: 6SL3730-7T.41.-.B
C
3),
which results in a very compact design for the line infeed.
If a second Active Line Module has to be arranged on the left
side, the option
B91
must be specified for the version
"2nd parallel infeed on left". If a second Active Line Module has
to be arranged on the right side, the option
B92
must be speci-
fied for the version "2nd parallel infeed on right".
Please note that only Active Line Modules with exactly the same
power rating may be connected in parallel. The potential for im-
balances in current distribution means that a current derating of
5 % applies; this must be taken into account when the modules
are dimensioned.
When configuring, it must be ensured that the maximum DC link
capacitance for the drive line-up that can be charged through
the Active Line Modules is not exceeded.
A connection of the Active Line Modules in parallel using DRIVE-
CLiQ must be taken into consideration.
For additional information, please refer to the SINAMICS Low
Voltage Engineering Manual.
Line voltage
Rated output
380 … 480 V 3 AC
300 … 900 kW
(power can be increased to up to
3420 kW through parallel connection)
Motor
Module
Motor
Module
Motor
Module
DC busbar
Motor feeder
Motor feeder
Infeed
Active
Line
Module
Active
Line
Module
G_CR01_EN_00217
Active
Line
Module
Active
Line
Module
Active
Interface
Module
Active
Interface
Module
Active
Interface
Module
Active
Interface
Module
Line
Connec-
tion
Module
6SL3730-7T...-.BC3
6SL3730-7T...-.BC3
B91
6SL3730-7T...-.BA3
B92
6SL3730-7T...-.BA3
Option
B91+ B92
© Siemens AG 2015