Siemens SINAMICS G120P Hardware Installation Manual page 20

Installing / mounting
WARNING
Heat sink fixing screws
The heatsinks of the PM230 IP55 (FSA to FSC) Power Modules have several screws to fix
them to the main housing of the Power Module. It is NOT permissible that these screws are
removed. The fixing screws of the heat sink are shown in the adjacent diagram (with red
circles).
CAUTION
Mounting and cooling the Power Module
The Power Module should be mounted on a wall or panel. This ensures that the rear
module panel is located on a flat surface, and the correct airflow is achieved to optimally
cool the Power Module. If the Power Module is not mounted onto a wall panel, then the rear
panel of the heat sink must be covered with a flat surface. This then ensures that the
correct airflow is achieved.
It must be ensured that the internal fan of the Power Module is correctly mounted before
the inverter is commissioned. If this is not observed, then the inverter can overheat.
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Hardware Installation Manual, 11/2014, A5E35319202B AA
PM230 Power Module IP55