Note: Use an extra exhaust fan if the air outlet is on the cabinet door.
Air outlet2Air inlet1
Arrange the cooling air flow through the components according to the technical data. See
the specifications for:
• cooling air flow
Note: The values stated for each component apply to continuous nominal load. If the
load is cyclic or less than nominal, less cooling air may be required.
• allowed surrounding air temperature and temperature rise inside the cabinet
• allowed pressure drop over the cabinet that the cooling fan can overcome
• air inlet and outlet sizes required for cooling and recommended filter material (if used).
Note: The heat dissipated by cables and other additional equipment must also be ventilated.
The internal cooling fans of the converter modules and filters are usually sufficient to keep
the component temperatures low enough in IP20 (UL Type 1) and IP42 (UL Type 1 filtered)
cabinets. Additional fans are present in the example designs as needed. If you install
additional heat-generating components to the cabinet, make sure to upgrade the cooling
system accordingly.
In IP54 (UL Type 12) cabinets, thick filter mats are used to prevent water splashes from
entering the cabinet. This requires the installation of additional cooling equipment, such as
a hot air exhaust fan.
48 Generic cabinet planning instructions
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