Danfoss VLT HVAC Drive FC 102 Operating Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

The frequency converter utilizes a back-channel coolingconcept that removes heat sink cooling air. The heat sinkcooling air carries approximately 90% of the heat out ofthe back channel of the frequency converter. Redirect theback-channel air from the panel or room by using:• Duct cooling. A back-channel cooling kit isavailable to direct the heat sink cooling air out ofthe panel when an IP20/chassis frequencyconverter is installed in a Rittal enclosure. Use ofthis kit reduces the heat in the panel and smallerdoor fans can be specified on the enclosure.• Cooling out the back (top and base covers). Theback-channel cooling air can be ventilated out ofthe room so that the heat from the back channelis not dissipated into the control room.NOTICEOne or more door fans are required on the enclosure toremove the heat not contained in the back channel ofthe frequency converter. The fans also remove anyadditional losses generated by other components insidethe frequency converter. To select the appropriate fan,calculate the total required airflow.Secure the necessary airflow over the heat sink. The flowrate is shown in Table 3.2.Enclosure size Door fan/top fan Heat sink fanD1h/D3h/D5h/D6h 102 m3/hr (60 CFM) 420 m3/hr (250 CFM)D2h/D4h/D7h/D8h 204 m3/hr (120 CFM) 840 m3/hr (500 CFM)Table 3.2 AirflowLiftingAlways lift the frequency converter using the dedicatedlifting eyes. To avoid bending the lifting holes, use a liftingbar.176FA245.10Illustration 3.2 Recommended Lifting MethodWARNINGRISK OF INJURY OR DEATHThe lifting bar must be able to support the weight of thefrequency converter to ensure that it does not breakduring lifting.• See chapter 8.9 Power Ratings, Weight, andDimensions for the weight of the differentenclosure sizes.• Maximum diameter for bar: 25 mm (1 in).• The angle from the top of the frequencyconverter to the lifting cable: 60° or greater.Failure to follow recommendations could result in deathor serious injury.Mounting1. Ensure that the strength of the mounting locationsupports the unit weight.2. Place the unit as near to the motor as possible.Keep the motor cables as short as possible.3. Mount the unit vertically to a solid flat surface toprovide cooling airflow. Ensure free space forcooling.4. Ensure the access, to open the door.5. Ensure the cable entry from below.Mechanical Installation VLT® HVAC Drive FC 10210 Danfoss A/S © 02/2017 All rights reserved. MG16D40233