Danfoss VLT Series Installation Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

Danfoss VLT Series Installation Manual Manual pdf 7 page image

See Installation of Duct Cooling Kit in Rittal Enclosures, forfurther information.The remaining heat losses are handled via fans and filtercombinations in the VLT® Plus Panel front doors.Door fanOne or more door fans remove the heat losses notcontained in the frequency converter backchannel and anyadditional losses generated from other componentsinstalled inside the enclosure. The total required air flow iscalculated with a dedicated software tool and the requiredair flow is shown in the panel documentation.The frequency converter fan runs for the following reasons:• AMA.• DC hold.• Pre-mag.• DC brake.• 60% of nominal current is exceeded.• Specific heat sink temperature exceeded (powersize dependent).• Specific power card ambient temperatureexceeded (power size dependent).• Specific control card ambient temperatureexceeded.Once the frequency converter fan is started, it runs forminimum 10 minutes.The door fans run, whenever the thermostat inside thepanel reaches the adjusted limit. Once the off-setpoint isreached, it switches the fans off. The duration of the on-time varies and depends on the load and local conditions,as well as on the pollution of the air filters.Cabinet light with power outletA light mounted on the cabinet interior increases visibilityduring servicing and maintenance. The light housingincludes a power outlet (230 V, 50 Hz, 2.5 A, CE/ENEC) fortemporarily supplying power to tools or other devices.Transformer tapsThe auxiliary supply transformer is factory-set to thenominal supply voltage of the cabinet. The transformertaps can be adjusted to the local conditions, to avoid over-and undervoltage. Additional information is provided inthe documentation for the optional transformer.Optional 24 V DC supply• Specifications: 5 A, 120 W, 24 V DC.• Purpose: Supplying power for customer-suppliedaccessory devices, such as:- Sensors.- PLC I/O.- Contactors.- Temperature probes.- Indicator lights.- Other electronic hardware used forinternal control/auxiliary circuits.• Protected against output overcurrent, overload,short circuits, and overtemperature.• Diagnostics include a dry DC-ok contact, a greenDC-ok indicator light, and a red overloadindicator light.1.4.3 Product Variant Examples130BE554.1021345671 Air outlet, top2 Air inlet, control3 Local control panel4 Door handle5 Mains switch6 Air outlet, control7 Plinth with air inlet, front (optional)Illustration 1.1 VLT® Plus Panel, 90 kW EnclosureIntroduction Installation GuideMG13B102 Danfoss A/S © 09/2015 All rights reserved. 51 1