Ventilation - Siemens SINAMICS S120 Equipment Manual

7.3.2

Ventilation

The SINAMICS S120 Chassis devices are forced-ventilated by means of integrated fans. To
ensure an adequate air supply, suitable openings for the inlet air (e.g.,ventilation slots in the
cabinet door) and discharged air (e.g.,by means of a hood) must be provided.
The cooling air must flow through the components vertically from bottom (cooler region) to
top (region heated by operation).
You must ensure that the air is flowing in the right direction. You must also ensure that the
warm air can escape at the top. The specified ventilation clearances must be observed.
Note
Cables must not be routed directly on the components. The ventilation grilles must not be
covered.
Cold air must not be allowed to blow directly onto electronic equipment.
CAUTION
Air guidance, as well as the arrangement of and settings for the cooling equipment, must be
chosen in such a way as to prevent condensation even with the highest relative humidity.
If necessary, cabinet enclosure heating may have to be installed.
Chassis power units
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
Cabinet design and EMC
7.3 Cabinet air conditioning
251