Erection Of Cabinets; Examples Of Cabinet Modules Arrangements - Siemens SINAMICS G130 Engineering Manual

SINAMICS S120 Cabinet Modules
Engineering Information
only remaining connection to be made on site is the link between the right-hand power unit (CIM module) and the left-
hand Cabinet Module. In this case, a connection can either be made to the Control Unit or to the power unit (CIM
module), according to the rules for DRIVE-CLiQ wiring (refer to section "DRIVE-CLiQ" in chapter "General
Information about Built-in and Cabinet Units SINAMICS S120").
The additional cabling required is calculated as follows: 1.5 m + 0.4 m cabinet width + 1.4 m = 3.3 m. A pre-
assembled, 4 m long cable is recommended for this purpose: 6FX2002-1DC00-1AE0
Inter-cabinet DRIVE-CLiQ connecting cables can also be fitted in the factory on request. The order-specific
Integration Engineering (order number 6SL3780-0Ax00-0AA0) can, for example, be used for this purpose. For further
details, please ask your Siemens contact.
7.2.3.5

Erection of cabinets

The standard erection sequence for air-cooled Cabinet Modules is generally from left to right, starting with the Line
Connection Modules, followed by the Line Modules and ending with the Motor Modules, as shown in the diagram
below.
To make allowance for the DC link busbar design (minimum cross-section), the Motor Modules should be arranged in
decreasing order of output power rating, i.e. with the highest output power at the Infeed and the lowest on the right.
Side panels (option M26 / side panel on the right or option M27 / side panel on the left) must be fitted at the beginning
and at the end of the complete cabinet line-up in order to comply with the degree of protection requirements.
In configurations with parallel-connected Infeeds for increased output power, the cabinets should be arranged where
possible in a symmetrical mirror image for the purpose of achieving symmetrical current distribution and the greatest
possible simultaneity of tripping of the line-side protective devices (circuit breakers or fuses) in the event of a short
circuit. In arrangements of this type, the Line Connection Module and the two Line Modules are positioned in the
middle of the drive configuration. The Motor Modules are then arranged on the right and the left of the Infeeds, as
shown in the following diagrams of example arrangements.
7.2.3.6

Examples of Cabinet Modules arrangements

Supply of two Basic Line Modules via a common Line Connection Module (6-pulse Infeed)
When Basic Line Modules are connected in parallel, a current derating factor of 7.5 % must be applied due to the
possibility of current imbalances.
When Basic Line Modules are supplied by a single Line Connection Module LCM, the BLMs must be arranged in a
mirror image with version 6SL3730-1T_41-_BA3 mounted on the right of the LCM and version 6SL3730-1T_41-_BC3
on the left of the LCM.
These BLM versions have integrated line-side fuses which are required because the circuit breaker in the LCM is not
capable of providing selective protection for the Basic Line Modules. They are therefore 200 mm wider in each case
than the standard version 6SL3730-1T_ _ _-_AA3 without fuses.
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