Interface Description; General Information - Siemens SINAMICS S120 Device Manual

Cabinet Modules
5.3 Smart Line Modules
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 third-to-last position,
example: 6SL3730-6TE41-1CU3.
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
current balancing.
● 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
point (i.e. the modules cannot be operated on different supplies).
● A derating factor of 7.5 % must be taken into consideration, regardless of the number of
modules connected in parallel.
5.3.2

Interface description

5.3.2.1

General information

This section 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.
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Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A