Fairchild PAX1 Electric Linear Actuator User manual



RotorkFairch ildPAX1LinearActuator

User’sManual



ProductOverview

ThePAX1isaflexiblelowvoltageDCpoweredlinear

actuatorfeaturinga25mmmaximumthrustrod

strokemovingatspeedsupto60mm/minanda

maximumthrustof2890Nallinaflameproof

enclosure.Theunitisinherentlylockinlastplaceas

thethrustrodmaintains

itspositionuponlossof

electricalpower.

Theactuatorcanbeactuatedopenloopusingtwo

opticallyisolatedswitchclosureinputs(UpandDown)

tomovetheactuatorsthrustrod.Theactuatorwill

continuetomovethethrustrodinresponsetothe

inputsuntileitheroftheadjustablestroke

limitsare

reached.

Theactuatorcanbecontrolledwithanisolated4‐20

mAanaloginputtoproportionallypositionthethrust

rodanywherewithinits25mmstroke.Thereisa1‐5

vdcnon‐isolatedcontrolinputaswell.Inanalog

controlmode,theunitisfailfreezeuponloss

of

eithercontrolsignals.

TheactuatorfeaturesUPandDOWNpushbuttonsunderthecovertofacilitatecommissioningandto

permitlocalcontroloftheactuator.Thereisan8mm(5/16”)femalehexmotordriveinterfaceunderthe

covertoallowmanualactuatormovement.

Theactuatorincludestwofullyadjustable

SPDTalarmrelays(oneHighandoneLow)providingalarm

functionwhentheactuator’sthrustrodreachescriticalpositionswithinitsstroke.Therelaysare

magneticallylatchedsothealarmswitchstatesaremaintainedwhenthepowerisdisconnected.This

allowsaccuratealarmfunctiononsystemsthatremovepowerfromthe

actuatorbetweenadjustmentsto

conservepowerasistypicallydoneinsolarpoweredinstallations.

ThePAX1offersanoptionalisolated4‐20mAfeedbackoutput.Thisfeedbackfeatureisfunctionalfor

boththepulsecontrolandanalogcontrolconfigurations.Theunitmustbepoweredtofacilitatethe

feedbackoutputfunction.





GeneralInformation

TheLinearElectricActuatordescribedinthisdocumenthasbeendesignedandmanufacturedwithstate

ofthearttechnology.Allcomponentsaresubjecttostringentqualityandenvironmentalrequirements

duringmanufacture.OurqualitysystemsarecertifiedISO9001.

Thisuser’smanualcontainsimportantinformationthatenablesacompetentusertoinstall,

operateand

maintainthislinearelectricactuator.Theinstallation,operationandmaintenanceofthisactuatorina

hazardousareamustbecarriedoutbyanappropriatelytrainedandqualifiedpersonandinaccordance

withallrelevantcodesofpracticefortheparticularHazardousAreaClassification.

Warning

 Installationmustbecarriedoutbyqualifiedpersonnelinaccordancewithallnationalandlocal

codesandordinances.

 ShockHazard.Multiplepowersourcespossible.Disconnectallpowersourcesbeforeservicing.

Seriousinjuryordeathcouldresult.

 Readandunderstandallinstructionscarefullybeforestartinginstallation.Savethisdocument

for

futureuse.Failuretoreadandunderstandtheseinstructionscouldresultinimproperoperationof

thedeviceleadingtoequipmentdamag e,seriousinjury,ordeath.



HazardousAreaRatings(Flameproof)

FactoryMutual

ClassIDivisionIGroupsABCDT5/T6

ClassII,IIIDivisionI,GroupsEFGT5/T6

Class1,Zone1,AExdbIIC,T5/T6Gb

Zone21,AExtbIIICT85ºC/100ºCDb

T6[T85ºC]:Ta=‐40ºCto+65ºC,

T5[T100ºC]:Ta=‐40ºCto+70ºC

Type4X/6P,IP66/68



HazardousAreaCo nditions ofuse

 HazardouslocationswiringmustcomplywithANSI/NFPA70(NEC®).

 Wiringmustberated110

Corhigher.

 Explosionproofcertifiedsealsarerequiredwithin18”forGroupsA,B,CandDinstallationsor

within2”forGroupIICinstallations.

 Useadampclothwhencleaningtheenclosuretopreventthebuildupofelectrostaticcharge.

 ThePAX1Actuatorincludesflamepathjoints.Consult

FairchildInc.ifrepairoftheflamepath

jointsarenecessary.

 Suitablyratedconduitsealsmustbeusedfortheconditionsofusesuchasdusttightsealsfor

ClassII&III,GroupsE,F,Gorwaterproofsealstopreventwateringress.

 TomaintainType4X

andIP66ratingwheninstallingthreadedconduit,usePTFEthreadsealant

tapeaccordingtoinstructions.



Installat ion

ThePAX1canbemountedinanypositionwithoutaffectingitsoperation.Itcanbemountedtoaflat

surfaceusingthemountingholesontheactuator.Fordetails,seeFigure1.“PAX1ExteriorDimensions”

above.

ConduitSeal:ThePAX1isratedforlimitedsubmergedoperationbuttheuserisresponsible

forensuring

watercannotenterthePAX1enclosurethroughtheconduitconnectionsandconduitport.Ensurethe

conduitinstallationiswatertightatelevationsthatmaybesubmergedbelowwater.Whereconduitis

pronetocollectinternalcondensation,appropriateconduittraps,drainsandsealsmustbeemployedto

preventcondensation

fromcollectinginsidethePAX1enclosure.

Wiring

ThePAX1canbecontrolledwiththreedifferentcontrolinterfaces.Thewiringdiagramsbelowshowthe

connectionsrequiredtooperatetheunitbasedonthecontroltypeaswellasconnectionstoother

featuressuchaspositionfeedbackandalarmswitches.

Theterminalblockscanaccommodatewiresizeupto1.5

mm(14ga.).Duetosafetyrequirements,wire

enteringTB2andTB3terminalblocks(alarmrelays)requireferrules(supplied)toprovideproper

insulationforthehighvoltageACconnections.



PowerSupplySizing

For12vdcoperation,therecommendedpowersupplyshouldhave2ampcapacity.

For24vdcoperation,

therecommendedpowersupplyshouldhave1ampcapacity.





0 10 20 30

Loop Supply Voltage (Volts)

Loop Supply Current (mA)

PAX1 Linear Actuator

Pulse Control Loop Supply Current

0.2

0.4

0.6

0.8

1.0

1.2

10 15 20 25 30

Supply Voltage (Volts)

Supply Current (Amp)

PAX1 Linear Actuator

Current Consumption Characteristics

Crimpferruleontowire,thenclampitintheterminalblock.

ElectricalConnections

Electrically isolated pulse input control using an external loop supply



Non isolated pulse input control using common power supply for pulse control loop power





Lp Rtn

MTR ENAB

V -

mA +

V +

mA -

PWR

LOOP SUPPLY

Figure 1.

SW2IsolationSwitch

setto“Isolate”

FEEDBACK

Switch set to

PULSE

Internal connection of

NO/ISOLATE switch.

Set to ISOLATE

Lp Pwr

MTR ENAB

V -

mA +

V +

mA -

PWR

SW2 Isolation Switch

set to “No”

Figure 2.

FEEDBACK

Switch set to

PULSE

Internal connection of

NO/ISOLATE switch.

Set to NO

4-20 mA analog control



1-5 vdc analog control



MTR ENAB

V -

mA +

V +

mA -

PWR

Figure 3.

FEEDBACK

20 mA

CONTROLLER

Set switch to

ANALOG

SW1

Set switch to 4-20 mA

Lp Pwr

MTR ENAB

V -

mA +

V +

mA -

PWR

Figure 4.

FEEDBACK

5vdc

CONTROLLER

Set switch to

ANALOG

SW1

Set switch to 1-5 vdc

Lp Pwr

Power and Feedback Connections



Power and Feedback Connections



MTR ENAB

V -

mA +

V +

mA -

PWR

Figure 5.

FEEDBACK

POWER SUPPLY

MILLIAMMETER

LOOP SUPPLY

Closed switch

disables motor

Lp Pwr

External loop supply for Isolated Feedback Loop

MTR ENAB

V -

mA +

V +

mA -

PWR

Figure 6.

FEEDBACK

POWER SUPPLY

MILLIAMMETER

Non Isolated Feedback using Power

Supply for feedback loop power

Lp Pwr



Alarm Switch Connections



UserInterface

SetupSwitch

EightpositionrotarySETUPswitch,

Configurationdipswitches,

SW1selectseither1‐5vdcor4‐20

mAforanalogcontrolinput

SW2,Isolate:ThePulsecontrol

inputsareisolatedfrom theDC

powersupplyproviding powertothe

unitandmustbepoweredfrom

a

separateexternalpowersource.

SW2,NO:ThePulsecontrolinput

circuitisconnectedtotheDCpower

supplyproviding powertotheunit.

Pushbuttonswitches,

UP;Movestheactuatorsthrustrodout

oftheunit.

DN;Movestheactuatorsthrustrodinto

theunit.

SET;Usedinconjunctionwith

therotary

SETUPswitchtosetendtravellimitsandalarmpointsandanalogfeedbackcalibration.



ALARM SW

Alarm Indicator

Power Supply

Figure 7.

ALARM SW

SETUPswitch

SW1

SW2

Figure8.

LEDIndicators

PWR:Green,Supplyvoltageisbetween11and30vdc.Red,Voltageislessthan11vdcorgreater

than28VDC.

LIMITHI:Green,Hilimitnotreached,thrustrodwillmoveinbothdirections.Red,HiLimitreached,

thrustrodwillmovedownonly.

LIMITLOGreen,Lolimit

notreached,thrustrodwillmoveinbothdirections.Red,LoLimitreached,

thrustrodwillmoveuponly.

ALARMHI:Green,HiAlarmnotreached,HiAlarmrelaynotenergized.Red,HiAlarmreache d,Hi

Alarmrelayisenergized.NOcontactareclosed.

ALARMLO:Green,LoAlarmnot

reached,LoAlarmrelaynotenergized.Red,LoAlarmreached,Lo

Alarmrelayisenergized,NOcontactareclosed.

Speedpotentiometer

20turn.Adjustsactuatorspeedfrom1.2mm/minto60mm/min

Dampingpotentiometer 

1turn.Adjustsstartandstoprampspeedrate.



Commissioning

Warning

 Note:multiplepowersourcespossible.Donotremovecoverinthefieldwithoutfirstremovingall

powerfromtheunit.

 Commissioningmustbedoneinasafeareabeforeinstallinginahazardousarea.

 Obtainspecialworkpermitbeforeremovingcoverandmakingpoweredadjustmentsinthefield.





1. Settingendtravellimits

1.1. DisconnectAnalogInputsfrom4‐20and1‐5vdcinputterminals.

1.2. Turnonpowertotheunit.

1.3. PositiontheSETUPSWITCHtotheTRAVELLIMITLOsetting.

1.4. UsingtheUPandDNbu ttonsunderthecover,positionthethrustrodto

thedesiredmost

retractedposition.

1.5. PresstheSETbuttonandwaitfortheLimitLoLEDtoturnfromGreenthenRedandbackto

Greentosetthelowtravel limit.

1.6. MovetheSETUPSWITCHtotheTRAVELLIMITHIsetting.

1.7. UsingtheUPandDN

buttonsunderthecover,positionthethrustrodto thedesiredmost

extendedposition.

1.8. PresstheSETbuttonandwaitfortheLimitHiLEDtoturnfromGreenthenRedandbackto

Greentosetthehightravellimit.

1.9. PositiontheSETUPswitchtotheOPERATE/PULSEor

OPERATE/ANALOGfornormaloperation.

1.10. WhenintheOPERATE/PULSEmode,theactuatorwillrespondtotheUpandDnexternalpulse

controlinputsandwillstopwhenthethrustrodreacheseitherendtravellimit.TheLIMITLO

andLIMITHILEDswillchangefromGreentoRedwhenthe

limitisreached.TheinternalUP

andDNpushbuttonswillrespondlikewise.

1.11. WhenintheTRAVELLIMIT/LOorHI,mode,theUpan dDnexternalpulsecontrolinputsare

disabled.TheinternalUPandDNpushbuttonswillbeactiveandwillignorethepreviousend

oftravellimitssothatnewlimitsmaybesetbeyondthepreviouslysetlimits.TheLIMITLOand

LIMITHILEDswillcontinuetooperatefromthepreviouslysetlimitsuntilnewlimitsareset.



2. SettingAnalogControlCurrent



2.1. Connecta4‐20mAsignalsourcetothe

mAinputterminals.

2.2. Turnonpowertotheunit.

2.3. SetSW1to4‐20mA.

2.4. PositionthePositiontheSETUPSWITCHtotheTRAVELLIMITLOsetting.

2.5. UsingtheUPandDNbu ttonsunderthecover,positionthethrustrodtothedesiredmost

retractedposition.

2.6. ApplythedesiredcontrolcurrenttothemAinputterminalsforthisthrustrodposition.

2.7. PresstheSETbuttonandwaitfortheLimitLoLEDtoturnfromGreenthenRedandbackto

Greentosetthelowtravel limitandcorrespondingcontrolcurrent.

2.8. Movethe

SETUPSWITCHtotheTRAVELLIMITHIsetting.

2.9. UsingtheUPandDNbu ttonsunderthecover,positionthethrustrodtothedesiredmost

extendedposition.

2.10. ApplythedesiredcontrolcurrenttothemAinputterminalsforthisthrustrodposition.

2.11. PresstheSETbuttonand

waitfortheLimitLoLEDtoturnfromGreenthenRedandbackto

Greentosetthehightravellimitandcorrespondingcontrolcurrent.

2.12. PositiontheSETUPswitchtotheOPERATE/AN ALOGtooperatetheactuatorfromthemAinput

terminals.

3. SettingAnalogControlVoltage



3.1. Connect

a1‐5vdcsignalsourcetotheVinputterminals.

3.2. Turnonpowertotheunit.

3.3. SetSW1to1‐5V.

3.4. PositionthePositiontheSETUPSWITCHtotheTRAVELLIMITLOsetting.

3.5. UsingtheUPandDNbu ttonsunderthecover,positionthethrust

rodtothedesiredmost

retractedposition.

3.6. ApplythedesiredcontrolvoltagetotheVinputterminalsforthisthrustrodposition.

3.7. PresstheSETbuttonandwaitfortheLimitLoLEDtoturnfromGreenthenRedandbackto

Greentosetthelowtravel 

limitandcorrespondingcontrolcurrent.

3.8. MovetheSETUPSWITCHtotheTRAVELLIMITHIsetting.

3.9. UsingtheUPandDNbu ttonsunderthecover,positionthethrustrodtothedesiredmost

extendedposition.

3.10. ApplythedesiredcontrolvoltagetotheVinputterminalsforthisthrustrod

position.

3.11. PresstheSETbuttonandwaitfortheLimitLoLEDtoturnfromGreenthenRedandbackto

Greentosetthehightravellimitandcorrespondingcontrolcurrent.

3.12. PositiontheSETUPswitchtotheOPERATE/AN ALOGtooperatetheactuatorfromtheVinput

terminals.

4. AlarmSwitches

4.1. PositiontheSETUPSWITCHtotheALARMSWITCHLOsetting.

4.2. UsingtheUPandDNbu ttons,positionthethrustrodtothedesiredLOALARMposition.

4.3. PresstheSETbuttonandwaitfortheALARMLOLEDtoturnfromGreenthenRedandback

to

GreentosettheALARMSWITCHLOposition.

4.4. TurntheSETUPSWITCHtotheALARMSWITCHHIsetting.

4.5. UsingtheUPandDNbu ttons,positionthethrustrodtothedesiredHIALARMposition.

4.6. PresstheSETbuttonandwaitfortheALARMHILEDto

turnfromGreenthenRedandback to

GreentosetALARMSWITCHHIposition.

4.7. PositiontheSETUPSWITCHtotheOPERATEPULSEorANALOGmodefornormaloperation.



5. SettingFeedbackOutput

5.1. MovetheSETUPSWITCHtotheFEEDBACKLOsetting.

5.2. UsingtheUPandDNbu tton,andmonitoringtheAnalogFeedbackcurrentonthemilliammeter,

adjusttheoutputcurrentto

thedesiredvalue(4‐12mA)fortheLOLimitposition.

5.3. PresstheSETbuttonandwaitfortheFEEDBACKLOLEDtoturnfromGreenthenRedandback

toGreentosettheFEEDBACKLOoutputcurrent.

5.4. MovetheSETUPSWITCHtotheFEEDBACKHIsetting.

5.5.

UsingtheUPandDNbutton,andmonitoringtheAnalogFeedbackcurrentonth emilliammeter,

adjusttheoutputcurrenttothedesiredvalue(12‐20mA)fortheHILimitposition.

5.6. PresstheSETbuttonandwaitfortheFEEDBACKLOLEDtoturnfromGreenthenRedand

back

toGreentosettheFEEDBACKHIoutputcurrent.

5.7. PositiontheSETUPSWITCHtotheOPERATEPULSEorANALOGmodefornormaloperation.



6. Manualadjustment ofthr u st rodposition.

Warning

 Manualadjustmentmustonlybedonewhenpowerisremovedfromtheunit.

 Note:multiplepowersourcespossible.Donotremovecoverinthefieldwithoutfirstremovingall

powerfromtheunit.



6.1. Thethrustrodoftheactuatormaybemanuallyadjustedviaan8mm(5/16”)femalehex

interfacelocatedthroughthetopoftheunitwiththecoverremoved.

6.2. Turntheadjustmentclockwisetoextendthethrustrodoutoftheunitandcounterclockwiseto

retractthethrust

rodintotheunit.

6.3. Takecarewhenmanuallyadjustingtheactuatorasyoucandamagetheunitifyouforcethe

thrustrodintoitsmechanicalstops.



7. MotorEnable



7.1. Themotorenableinput(Terminal6ontheterminalblocks)isprovidedforadditionalcontrolof

theactuator.

Fornormaloperation,noconnectionisrequiredforthisinput.Groundingthis

inputdisablesthemotorandtheactuatorwillignoreanycommandtomoveth ethrustrod

includingcommandsfromtheinternalpushbuttons.

PAX1ActuatorInstallationDimensions

Figure9.

Maintenance



PeriodiclubricationofThrustRod

After20,000operatingcycles,re‐lubricatetheactuatorthrustrod.

Makesureitissafetodisabletheactuatorinthesystem.MovethesetupknobtotheOperatePulse

modeandusingtheUPandDNpushbuttons,positionthethrustrodtoa

positionthatremovesany

thrustonthethrustrod.Toexposethethrustrodremovethefourboltsthatattachestheactuator

housingtotheactuateddevice.RemovetheThrustRodCapexposingtheThrustRod.Withthesetup

knobtotheOperatePulsemodeandpressingtheJogUpbutton,

extendthethrustrodtoitsmost

extendedopposition.ApplyDowCorningG‐nlubricanttotheexposedthrustrodthread.UsingtheJog

Dnbutton,retractthethrustrodtoitsmostretractedposition.Re‐installthethrustrodcapandthe

PAX1actuatortotheactuateddevice.



Spec ifications

ElectricalSupply:

PowerSupplyVoltage 11‐30VDC

PowerConsumption 18wattsmax,<1wattstandby



ActuationElectrical,Analog

ActuationControl 4‐20mA,1500Vopticallyisolatedfrompowersupply,Switchforc ommonpower

supply.1‐5VDCnonisolated,50KΩimpedance

ActuationSupply 11‐30VDC(LoopSupply)



ActuationElectrical,Pulse

Actuation

Control SwitchClosureSinking,(1)increase,(1)decrease

ActuationCurrent 10mAsink,opticallyisolated1500V,Switchforcommonpowersupply

ActuationSupply 4VDCminimum,30VDCmaximum



Monitor

AlarmSwitches Customeruse,(2)SPDTeachswitch,1A250VAC,(Maglatchingrelay)

PositionFeedback Optional,Isolated4‐20mA,11‐30VDCloop

supply



ElectricalDesignLimits

SupplyVoltageLimits 11VDCmin,30VDCmax

AnaloginputLimits 3.5mAmin,21mAmax,100mAw/odamage

AnalogOutputLimits 3.5mAmin,21mAmax

Externalloopsupplylimits 4VDCmin,30VDCmax

AlarmSwitches  1A250VACSPDT



Customerinterface:

ElectricalConnections Screwterminalblockunder

cover,14‐30AWG

Actuatorspeed Multi‐turnpot,1.2–60mm/min*

Caution

 Shuttingoffactuatoranddisconnectingassociatedequipmentcancausedangeroussystem

conditionstoexist.EnsuretheSystemisproperlypreparedformaintenancetobeperformedon

theactuator.

Limitadjustments Pushbuttonswitchtoacceptcurrentthrustrodpositionfor(2)EndofTravel

limit,&(2)AlarmSwitch,andAnalogFeedbackCalibration

SetupSwitch  8positionrotaryswitch.

Damping  Single‐turnpot,8:1turndown

IsolationSwitch PulseControlLoop–Isolat ed/commontopowersupply



ActuatorPerformance:

Maximum

Stroke 25mm

MaximumForce 2890N(650lbf)

MaxLinearSpeed 60mm/min 

Actuatorshaft M10x1.5mmscrewthd.

PowerUpInitialization AnalogControl:2.1sec.

Time  PulseControl:0.9sec.

Feedbackoutput:0.9sec.



EnvironmentalRatings

Oper.Temp.Range‐40ºCto+80ºC,<50%DutyCycle,<10

mincycleperiod(MotorActuated)

‐40ºCto+70ºC,ContinuousDuty(MotorActuated)

IngressProtection IP66&IP68/NEMA4X

NEMA  Type4X&6P



*Actuationspeedmayneedtobelimitedtoachieveratedthrustatlowersupplyvoltages.



OM‐100PAX1ARev_12/16

Fairchild PAX1 Electric Linear Actuator User manual

Related papers

Other documents