Thermo-hydraulicactuator,ABV
Danfossthermo-actuatortypeABVisaslowactingvalveactuator.
InsidetheABVanelectricheatcoilwillheatathermostaticelement
whenanelectricsignalisapplied.Whenheatingthethermostatic
elementitexpandsinordertomanagethecontrolvalve.
Twobasictypesareavailable:ABVNC(NormalClosed)andABVNO
(normalopen).Forexample,ABVNCkeepsa2-portcontrolvalve
closedwhennoopen-signalsareapplied.
Electricopen-signalscomefromtheelectronicoutputoftheECL
Comfortcontrollerinordertomanagethecontrolvalve.When
open-signalsareappliedtotheABVNC,thevalvegraduallyopens.
Open-signalsareintheECLComfortcontrollerexpressedas
"Arrow-up"(open)anddisplayedatthevalvesymbol.
Whentheflowtemperature(forexampleatS3)islowerthanthe
desiredflowtemperature,relativelylongopen-signalscomefrom
theECLComfortcontrollerinordertoincreasetheflow.Bythis,
theflowtemperaturewillovertimebealignedwiththedesired
temperature.
Oppositely,whentheflowtemperatureishigherthanthedesired
flowtemperature,relativelyshortopen-signalscomefromtheECL
Comfortcontrollerinordertoreducetheflow.Again,theflow
temperaturealigns,overtime,withthedesiredtemperature.
ThecontroloftheDanfossthermo-actuatortypeABVusesaunique
designedalgorithmandisbasedonthePWMprinciple(Pulse
WidthModulation),wherethedurationofthepulsedetermines
themanagementofthecontrolvalve.Thepulsesarerepeated
each10sec.
Aslongastheflowtemperaturecorrespondstothedesired
temperature,thedurationoftheopen-signalswillremainconstant.
ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.
xstandsforcircuit/parametergroup.
MENU>Settings>Controlparameters
Actuator
1x024
ABV/GEAR
GEAR
Selectionofvalveactuatortype.
ABV:
DanfosstypeABV(thermoactuator).
GEAR:
Gearmotorbasedactuator.
Whenselecting"ABV",thecontrolparameters:
•Motorprotection(ID1x174)
•Xp(ID1x184)
•Tn(ID1x185)
•Mrun(ID1x186)
•Nz(ID1x187)
•Min.act.time(ID1x189)
arenotconsidered.
136|©Danfoss|2017.09
VI.GU.L2.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
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