Guidelines for planning the cabinet installation 31
• ABB recommends 360° high frequency grounding of the control cable shields at
their entries. The shields can be grounded by means of conductive shielding
cushions pressed against the cable shield from both directions as shown below.
In US installations, you can use cable conduit entry.
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 the hardware manual.
The 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.
• Make sure that the temperature of the cooling air that goes into the drive does not
exceed +40 °C (+104 °F).
• 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 36.
• 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 correct cooling of the drive
module. See section Minimum air inlet and outlet grating sizes on page 33.
1 Tightening screw
2 EMI conductive cushion
3 Strain relief
4Grommet
5 Entry plate
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