Danfoss VLT AHF005 Design Manual

Contents

Danfoss VLT AHF005 Design Manual Manual pdf 30 page image

6 How to Install6.1 Mechanical Mounting6.1.1 Safety Requirements of MechanicalInstallationNOTEPlease observe the filter weight and ensure that properlifting equipment is used.NOTEWhen installing the filter use the lifting eyes on both sides tolift the filter.NOTEDo not use other parts (terminals, enclosures, etc.).6.1.2 MountingThe filters are available in IP00 and IP20 and for both IPratings the following guidance must be followed duringinstallation.• All filters must be mounted vertically with theterminals at the bottom• Do not mount the filter close to other heatingelements or heat sensitive material (such as wood)IP00• The surface temperature of the IP00 filters canexceed 70°C and a hot surface warning label isplaced on the filterIP20• Top and bottom clearance is minimum 150mm• The surface temperature of the IP20 filters does notexceed 70°C• The filter can be side-by-side mounted with thefrequency converter and there is no requirementfor spacing between then.6.1.3 Recommendations for Installation inIndustrial EnclosuresTo avoid high frequency noise coupling keep a minimumdistance of 150mm (5.91 inches) to- mains/supply wires- motor wires of frequency converter- control- and signal wires (voltage range < 48V)To obtain low impedance HF-connections, grounding,screening and other metallic connections (e.g. mountingplates, mounted units) should have a surface as large aspossible to metallic ground. Use grounding and potentialequalisation wires with a cross section as large as possible(min. 10mm²) or thick grounding tapes. Use copper or tinnedcopper screened wires only, as steel screened wires are notsuitable for high frequency applications. Connect the screenwith metal clamps or metal glands to the equalisation barsor PE-connections.Inductive switching units (relay, magnetic contactor etc.)must always be equipped with varistors, RC-circuits orsuppressor diodes.6.1.4 VentilationThe filters are cooled by means of air circulation.Consequently the air needs to be able to move freely aboveand below the filter.When mounting the filters in panels or other industrialenclosures it must be ensured that there is a sufficientairflow through the filter to reduce the risk of overheatingthe filter and the surrounding components.If other heat sources (such as frequency converters) areinstalled in the same enclosure, the heat they generate alsoneeds to be taken into account when dimensioning thecooling of the enclosure.The filters have to be mounted on a wall in order to guide airthrough the gap between the wall and the filter. In instal-lations (e.g. panels) where the filter is mounted on rails, thefilter will not be sufficiently cooled because of false airflowand therefore a back plate can be ordered separately. Seefollowing illustration.How to Install AHF005/010 Design GuideMG.80.C4.02 - VLT® is a registered Danfoss trademark 296 6