Siemens SINAMICS S120 Manual page 203

Configuration
Motor Modules in booksize format are factory-installed as "Booksize Cabinet Kits" in
Booksize Base Cabinets and delivered as a complete unit including cabinet-side connection
components.
Several Booksize Cabinet Kits can be installed in one Booksize Base Cabinet, depending on
the mounting width requirements, which in turn depend on the power. Each Motor Module is
connected separately to the DC busbar of the Cabinet Modules via a separate fuse switch
disconnector. The DC link rail integrated in the devices is not used. As a 24 V DC supply
buffered by the DC link is not possible for Booksize units, an auxiliary power supply is tapped
to provide the 24 V DC required for the Booksize Cabinet Kit. The required 24 V DC supply
must be provided by an external source via the auxiliary power supply.
With option K73, the 24 V DC supply is provided by a dedicated SITOP device.
Note
Additional information
The configuration examples of the individual Motor Modules are used to illustrate the
positioning of the factory-fitted components. They show the maximum possible configuration
of the modules, which contain all options that can be ordered.
Refer to the layout diagrams (AO) on the customer DVD for the precise order-specific
location of the components.
Cabinet Modules
Manual, 03/2013, A5E03263538A
Cabinet Modules
5.5 Booksize format Motor Modules
201