Interface Description; General Information - Siemens SINAMICS S120 Manual

Parallel connection of Smart Line Modules to increase power rating
Up to four Smart Line Modules with the same power rating can be connected in parallel in
order to increase power.
Smart Line Modules with "mirror-image" power connections enable the parallel connection of
these modules in a compact configuration. Order numbers for devices that are arranged to
the left of the Line Connection Module have a "C" in the next-to-last position,
example: 6SL3730-6TE41-1BC3.
The following rules must be observed when connecting Smart Line Modules in parallel:
● Up to 4 identical Smart Line Modules can be connected in parallel.
● The parallel connection must be implemented using a Control Unit.
● A 4% reactor is always required upstream of each Smart Line Module for the purpose of
● Special Line Connection Modules are available for connecting the modules in parallel.
● With multiple infeeds, power must be supplied to the systems from a common infeed
● A derating factor of 7.5% must be taken into consideration, regardless of the number of
5.3.3

Interface description

5.3.3.1

General information

This chapter describes only those interfaces in the cabinet unit that require additional
connection work by the customer. All other interfaces are pre-wired at the factory and are not
designed for customer connections.
Note
Additional information
All connections to be established on the plant side as well as the interfaces for integration
into the plant control system are described in the circuit diagrams and terminal diagrams on
the customer DVD supplied with the device.
Cabinet Modules
Manual, 03/2013, A5E03263538A
current balancing.
point (i.e. the modules cannot be operated on different supplies).
modules connected in parallel.
Cabinet Modules
5.3 Smart Line Modules
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