Planning the cabinet assembly
25
Cooling and degrees of protection
The cabinet must have enough free space for the components to ensure sufficient
cooling. Observe the minimum clearances given for each component.
The air inlets and outlets must be equipped with gratings that
• guide the air flow
• protect against contact
• prevent water splashes from entering the cabinet.
The drawing below shows two typical cabinet cooling solutions. The air inlet is at the
bottom of the cabinet, while the outlet is at the top, either on the upper part of the
door or on the roof.
Arrange the cooling air flow through the modules so that the requirements given in
chapter Technical data are met:
• cooling air flow
Note: The values in Technical data apply to continuous nominal load. If the load is less than
nominal, less cooling air is required.
• allowed ambient temperature.
Make sure the air inlets and outlets are sufficient in size. Please note that in addition
to the power loss of the drive module, the heat dissipated by cables and other
additional equipment must also be ventilated.
The internal cooling fans of the modules are usually sufficient to keep the component
temperatures low enough in IP22 cabinets.
In IP54 cabinets, thick filter mats are used to prevent water splashes from entering
the cabinet. This entails the installation of additional cooling equipment, such as a
hot air exhaust fan.
The installation site must be sufficiently ventilated.
Air inlet
Air outlet
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