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Installationposition

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Outdoorusage:

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Whenusingtheactuatorsinenvironmentswithhigh

temperaturefluctuationsorhighhumidity,werecommend

usingaheatingresistor.

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Figure2:Installationpositions

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5.Function

ThePSFactuatorsaredesignedaselectricvalveactuatorswithfailsafefunction.Theactuatorismountedontothe

valveviapillars.Dependingonthetypeofvalveused,mountingpillarsoraspecialvalvemountingbracketis

required.

BasedonabrushlessDCmotor(BLDC)thegeneratedtorqueistransmittedvia

amulti‐stagespurgearontoaspindle

nut.Thespindlenuttransmitstheinputtorqueintoanaxialthrustforceviaaspindle .Thelinearstrokeis

transmittedtothevalvespindlebyacouplingpiece.

Thestrokeismeasuredandcontrolledbyalinear12BitHallsensor.

Incaseofmainspowerloss,thestrokemovementisinOPENorCLOSEdirectionbyspringforce.

Electricalwiringisdonetoa terminalblockundertheactuatorcover.

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6.Manualoperation

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Figure3:Manualoperation

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Twopushbuttonsareinstalledto

drivetheactuatorincaseof

installationworksuchasmounting

ontoavalve,orsettingthelimit

switchespositions(see10.7).

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push

button

PS Automation PSF402.2 User Manual

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