USER MANUAL DV WITH CONTROLLER VERSION 1.01.13 90925372

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k.6.9.2ControlofheatingcapacityconnectedtounitwithoutSystemaircontrolsystem
Electricalheaterinstalledwithseparatecontrollerbesidetheheater.Theseparatecontrollerisdesignedfor
capacityconversionofthe0‐10Vcontrolsignalfromthemaincontrolsystem.Theheatingcapacityis
adaptedinsteps.
Theelectricheater
isnotsuppliedfromtheairhandlingunitcabinetasthecabinetisnotdesignedto
supplytheheaterwithpower.Nopowersupplycablesareconnectedtotheelectricheater.Theseparate
controlleriswithoutsupplydisconnectingdevice.
k.6.10Speedcontroloffans
k.6.10.1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.6.10.2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calculationinthecontrollercontinuously
transmitsthenecessaryrevolutionsforthefanstothefrequencyconverterstoachievetherequired
pressure.
k.6.10.3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.6.10.4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
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.6.11.2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individualorder.
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