Interface Description; General Information - Siemens SINAMICS S120 Device Manual

Parallel connection of Basic Line Modules to increase power rating
Two Basic Line Modules are available for creating drive assemblies with more power. These
modules can be operated on a common Line Connection Module and are arranged to the
right and left of the Line Connection Module. The power connections on the Basic Line
Module on the left of the Line Connection Module are a mirror image (order number with C in
the third-to-last position, example: 6SL3730-1Tx41-xCU3), which produces a very compact
design for the line supply.
The following rules must be observed when connecting Basic Line Modules in parallel:
● Up to four identical Basic Line Modules can be connected in parallel.
● A common Control Unit is required whenever the modules are connected in parallel.
● 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.
When Basic Line Modules are connected in parallel, each having its own Line Connection
Module, the main contactors or circuit breakers of the respective Line Connection Modules
must switch on together and simultaneously.
The monitoring is realized via terminals -X50 of the particular Line Connection Module.
5.2.2

Interface description

5.2.2.1

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.
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
Cabinet Modules
5.2 Basic Line Modules
157