SystemAir Danvent DV

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41
k.6.10Speedcontroloffans
k.6.10.1TIMEcontrolsystem–ECmotors
FanmotorrevolutionsarecontrolledbytheECmotors.TheECmotorsareconfiguredandtestedtocomply
withthedataoftheunit.
k.6.10.2DVcontrolsystem‐frequencyconvertersinsidetheunitareIP20
Fanmotorrevolutionsarecontrolledbyfrequencyconverters,
andtheyareconfiguredandtestedto
complywiththedatafortheunit.Thefrequencyconverterforeachfanmotorisinstalledinsidetheunit
besidethefanmotorwithcablesbetweenmotorandconverter.Inunitswithcompletecontrolsystemthe
frequencyconvertersaredeliveredwithsystemparameters
adaptedtothemotorsandtheproject.
k.6.10.3Pressuretransmitters
Separatecontroloftheairfloworductpressureforsupplyfanandforextractfan.Therequiredairflowor
ductpressureswithnormalaswellasreducedcapacityareselectedontheSystemairControlPanel.
Theactualpressureis
measuredbypressuretransmitters.PIcalcul ationinthecontrollercontinuously
transmitsthenecessaryrevolutionsforthefanstothefrequencyconverterstoachievetherequired
pressure.
k.6.10.4CO2‐dependentairflow
TheairflowiscontrolledbyaCO
2
sensor.HighCO
2
concentrationisequaltohigherairflow.LowCO
2
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concentrationisequaltolowerairflow.BasedontheactualCO
2
levelandamin/maxlevel,theneeded
airflowiscalculated.Thespeedofeachfanisadjustedviafrequencyconverter.Terminalsinthecabinetare
availableforconnectionofthesensor.
k.6.10.5Humiditydependentairflow
Theairflowiscontrolledbythehumiditysensor.Highhumidityisequalto
higherairflow.Lowhumidityis
equaltolowerairflow.Basedontheactualhumiditylevelandamin/maxleveltheneededairflowis
calculated.Thespeedofeachfanisadjustedviafrequencyconverter.Terminalsinthecabinetareavailable
forconnectionofthesensor.
k.6.11Cabinet
k.6.11.1IntegratedcabinetsinTIMEunits
TIMEunitsaredeliveredwith2integratedcabinets.Onecabinetinthesupplyfansectionandonecabinet
inexhaustfansection.Bothcabinetsareinstalledbehindinspectiondoors.Externalcomponentsmustbe
connectedtoterminalsinthecabinetinthesupplyfansection.
k.6.11.2
IntegratedcabinetinDVunitswithcontrolsystem
Cabinetisintegratedintheunitbehindaninspectiondoor.Terminalsareinstalledinthecabinetforall
externalcomponents.Thenumberofterminalsisalwaysadaptedtotheindividualorder.
k.6.11.3CabinetplacedontheDVunitwithcontrolsystem
The
modelswiththecabinetontheunitareexclusivelyforindoorinstallation.Terminalsareinstalledinthe
cabinetforallexternalcomponents.Thenumberofterminalsisalwaysadaptedtotheindi vidualorder.
k.6.12Temperaturesensors
Foursensorsarealwaysdeliveredwitheachunit.Seebelowwherethesensorsareplaced;
 1sensorintheextractair,installedinsidetheunit