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44 Guidelines for planning the cabinet installation
Planning the cooling
Note the following guidelines when you plan the cooling of the cabinet:
•
Ventilate the installation site sufficiently so that the cooling air flow and ambient
temperature requirements of the drive module are met, see pages
internal cooling fan of the drive module rotates at a constant speed thus blowing
constant air flow through the module. Whether the same amount of air must be
replaced all the time in the facility depends on how much heat must be removed.
•
Leave enough free space around the components to ensure sufficient cooling.
Observe the minimum clearances given for each component. For the required free
space around the drive module, see page 49.
•
Also ventilate the heat dissipated by cables and other additional equipment.
•
Make sure that the air inlets and outlets are large enough to allow sufficient air
flow in and out of the cabinet. This is critical for proper cooling of the drive module.
•
Equip the air inlets and outlets 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. We recommend that the air outlet is on the cabinet roof. Use an extra
exhaust fan if the air outlet is on the cabinet door.
Air inlets and outlets of the cabinet
1
Air inlet
2
Air outlet
2
1
118
and 122. The
Air flow inside the drive module
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