ABB ACS850-04 Hardware Manual page 44

44
• 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 47.
• 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.
• The internal cooling fans of the drive modules and reactors/chokes 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.
Planning the cabinet installation
Air outlet
Air inlet
Air inlets and outlets on the cabinet door
Air flow inside the drive module