Siemens SINAMICS S120 Combi - Page 262

Cabinet design and EMC
13.9 Note on control cabinet cooling
SINAMICS S120 Combi
260 Manual, Edition 07/2012, 6SL3097-4AV00-0BP3
Note
If the components are installed in a sealed cabinet, an internal air cooling system must be
installed to circulate the air and prevent hot spots. It is best to install the fan above the
components to optimize the air flow (suction).
&RROLQJXQLW
0RXQWLQJIUDPH
0RXQWLQJSDQHO
EURXJKWIRUZDUG
&XWRXWDVKLJKDV
SRVVLEOH
&URVVVHFWLRQ
PLQFP

&XWRXWDVORZDV
SRVVLEOH
&URVVVHFWLRQ
PLQFP

&RQWUROFDELQHW
([SDQVLRQD[LV
6&RPEL
3RZHU0RGXOH
Figure 13-6 Examples of cabinet ventilation
CAUTION
The air guidance and arrangement of the cooling equipment must be chosen in such a way
that no condensation can form on the components. If necessary, cabinet enclosure heating
may have to be installed.