Siemens SINAMICS S120 Device Manual page 185

Configuration
Active Line Modules are always operated together with an Active Interface Module, which
contains the associated Clean Power Filter and pre-charging circuit. The included line filter
enables compliance with the EMC requirements for the "second environment".
Note
Additional information
The configuration examples of the individual Active Line Modules 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
positioning of the components.
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
5.4 Active Line Modules including Active Interface Modules
Cabinet Modules
185