Basic Documentation

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Description
DesignedforusewiththeFlowriteandotherstandardvalveswith
a3/4”(20mm)stroke,theFlowriteSKDElectronicValveActuator
receivesa0to10Vdcor4to20mAcontrolsignaltoproportionally
controlthevalve.Theactuatorsareavailablewithstandardor
advancedfunctionality.
Features
Standard Features
Partnos.withUsufxhavethesestandardfeatures:
• Direct-coupledinstallationrequiresnospecialtools
oradjustments
• Visualandelectronicstrokeindication
• Die-castaluminumhousing
• 250lbf.(1150N)nominalforce
• Integralpositionfeedback
• Manualoverride
• Springreturntofail-safeposition
• Maintenance-free
Advanced Features
Partnos.withUAsufxhavestandardfeatures,plusthese
advancedfeatures:
• Adjustablestartandspan
• Strokelimitcontrol
• Selectableoperationdirection(directorreverseacting)
• Choiceoflinearorequalpercentageowcharacteristics
• Designedtobeusedwithothermanufacturer’svalveswith
theappropriateUniversalValveRetrotKit
Applications
TheFlowriteSKDElectronicValveActuatorrequiresa24Vacsupply
andisdesignedtobeusedwithFlowriteandotherstandardvalves
inliquidandsteamserviceapplications.
Wiring Diagrams
SKD Series Electronic Valve Actuators
24Vac,ProportionalControl
SpringReturn
Specications
Operating Voltage ................................................................ 24Vac±20%
Frequency ................................................................................... 50/60Hz
Power Consumption
 SKD62U/UA .........................................................................18VA(12W)
Control Signals
ControlInput(Y)
  Voltage ..............................................................................0to10Vdc
  Current ..............................................................................4to20mA
 ControlInput(R)
  Resistance .................................................................. 0to1000Ohms
  Voltage ................................................................................ 0to1.6V
 ControlOutput(U)
  Voltage ..............................................................................0to10Vdc
  Current ........................................................................... 0.5mAmax.
 ControlOutput(U)
  Current ..............................................................................4to20mA
  Max.Impedance ..................................................................250Ohms
Function
NominalStroke .................................................................. 3/4”(20mm)
 RunTimewithControlOperation(FullStroke)
  PowerStroke,0to100% ........................................................... 30sec.
  ReturnStroke,100to0% .......................................................... 15sec.
 NominalForce
  NCand3-wayUpper
Stroke......................................................................................... 0%
Force .................................................................... 225lbs.(1000N)
  NOand3-wayByPass
Stroke..................................................................................... 100%
Force .................................................................... 258lbs.(1150N)
Agency Approvals .................................................................. UL873,cUL,
CSAC22.2No.24-93,
CEN474
Operating
AmbientTemperature .........................................5to130°F(-15to55°C)
 MediaTemperature ........................................14to300°F(-10to150°C)
Conduit Opening ...................................................................... 1/2”NPSM
Housing ................................................................. NEMA1(InteriorOnly)