Horizontal Installation - Siemens SINAMICS S120 Equipment Manual

Cabinet design and EMC
8.3 Cabinet installation, vertical and horizontal installation
8.3.2

Horizontal installation

The water-cooled SINAMICS S120 devices can operate in a vertical position with the device
resting on its rear panel.
To prevent concentrations of heat (hotspots) inside the devices in this mounting position, an
external fan needs to be installed which is capable of removing heated air from the devices,
see "Volumetric air flow and fans required (Page 238)".
A baffle (referred to below as air distribution baffle) must also be mounted above the device.
This ensures that the air is sucked through the IP20 covers in an even distribution over the
entire length of the device, thereby ensuring that even components at the bottom left of the
device remain within the permissible tolerance range (see figure below).
The components required for a horizontal mounting position can be seen in the Figure
below.
Figure 8-8
The height h (the distance between the device top edge (horizontal) and the air distribution
baffle A) must be in the range 25 mm < h < 60 mm!
Requirement for air distribution baffle ("A")
In the case of a single device (Power Module, Active Line Module or Motor Module) or a
Motor Module mounted adjacent to an Active Line Module: Air distribution baffle A is closed,
the side openings ensure adequate distribution of air flow.
For configurations with several devices mounted adjacently, air distribution baffle A must be
perforated. The perforation must be designed such that up to 60% of the opening area is in
the lower device half (in the figure above, between X1 and X2).
236
Basic layout for horizontal installation position
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0