Danfoss VLT AQUA Drive FC 200 Instruction Manual

Also see for VLT AQUA Drive FC 200: Manual Design guide Service manual Instruction manual Operating instructions

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Danfoss VLT AQUA Drive FC 200 Instruction Manual Manual pdf 27 page image

3.2.4 Cooling and AirflowCoolingCooling can be obtained in different ways, by using thecooling ducts in the bottom and the top of the unit, bytaking air in and out the back of the unit or by combiningthe cooling possibilities.Duct coolingA dedicated option has been developed to optimize instal-lation of drive types in Rittal TS8 Units utilizing the fan ofthe adjustable frequency drive for forced air cooling of thebackchannel. Please consult GE for more details.The air out the top of the Unit could but ducted outside afacility so the heat loses from the backchannel are notdissipated within the control room reducing air-conditioning requirements of the facility.Back coolingThe backchannel air can also be ventilated in and out theback of a Rittal TS8 Unit. This offers a solution where thebackchannel could take air from outside the facility andreturn the heat losses outside the facility thus reducing air-conditioning requirements.AirflowThe necessary airflow over the heatsink must be ensured.The flow rate is shown below.Unit SizeprotectionDoor fan(s) / Top fanairflowHeatsink fan(s)IP21 / NEMA 1 700 m3/h (412 cfm)* 985 m3/h (580 cfm)*IP54 / NEMA 12 525 m3/h (309 cfm)* 985 m3/h (580 cfm)*Table 3.1 Heatsink Air Flow* Airflow per fan. Unit Sizes 5X contain multiple fans.External ductsIf additional duct work is added externally to the Rittalcabinet, the pressure drop in the ducting must becalculated. Use the charts below to derate the adjustablefrequency drive according to the pressure drop.9080706050403020100(%)Drive Derating0 25 50 75 100 125 150 175 225 130BB190.10200Pressure ChangeFigure 3.16 Unit Size 61, 62, 63 and 64 Derating vs. PressureChangeDrive air flow: 985 m3/h (580 cfm)3.2.5 Connector/Conduit Entry - IP21(NEMA 1) and IP54 (NEMA12)Cables are connected through the connector plate fromthe bottom. Remove the plate and plan where to place theentry for the connectors or conduits. Prepare holes in themarked area on the drawing.NOTE!The connector plate must be fitted to the adjustablefrequency drive to ensure the specified protection degree,as well as ensuring proper cooling of the unit. If theconnector plate is not mounted, the adjustable frequencydrive may trip on Alarm 69, Pwr. Card Temp130BB073.10Figure 3.17 Example of proper installation of the connectorplate.Mechanical Installation VLT AQUA 12-Pulse High Power Instruction Manual3-14 MG.20.Y1.22 - VLT® is a registered Danfoss trademark33