MOTOYAMA EA91A Manuale utente

INSTRUCTIONMANUAL

BulletinNo.MIE-B6104KBulletinNo.MIE-B6104K

ModelEA91A＆EA90A

PrintedinJapan

2013.07.05TKP

ModelsEA91AFlameproofTypeof

Explosion-protectedConstruction

ModelEA90AIntrinsicSafetyTypeof

Explosion-protectedConstruction

ELECTRO-PNEUMATIC

VALVEPOSITIONERS

ThisINSTRUCTIONMANUALissuppliedforinformationpurposeonlyandshould

notbeconsideredcertiﬁedmarketabilityandconformabilityofthisproduct.

□MOTOYAMAiscontinuouslyimprovingandupqradingitsproductdesign,speciﬁcationsand/or

dimensions,Informationincludedhereinissubjecttochangewithoutnotice.

■HeadOﬃceandFactory

5-2,OhiraAzakameoka,Ohira-Mura,Kurokawa-gun,Miyagi-ken,981-3697Japan

TEL:+81-22-344-4511/FAX:+81-22-344-4533

■OverseasMarketing&SalesDept

5-2,OhiraAzakameoka,Ohira-Mura,Kurokawa-gun,Miyagi-ken,981-3697Japan

TEL:+81-22-344-4546/FAX:+81-22-208-5020

ModelEA91A＆EA90A

FOREWORD

ThankyouverymuchforpurchasingourModelEA91A/EA90AElectro-pneumatic

ValvePositioner.Takefullynoticethattheitemsdescribedbelowtousethisvalve

positionersafelyandcorrectly.

⑴ ThisInstructionManualdescribesthebasicrecommendedproceduresforopera

-tingtheModelEA91A/EA90AElectro-pneumaticValvePositioner.Thoroughlyread

andunderstandalldescriptionsinthismanualbeforeoperation.ThisInstruction

Manualshouldalwaysbereferredpriortoanyoperations.

⑵ Thisproductismountedtoacontrolvalveasdedicatedequipment.Readand

followallindividualproceduresinthisinstructionmanualwiththeinstructionmanual

ofcontrolvalvewhenworkingandoperatingthisproductmountedtothecontrol

valve.

⑶ As the result of studying and improving this product without notice, the

speciﬁcations,dimensions,adjustments,illustrations,andotheritemsincludedin

this manual might be diﬀerent in details. For any questions about the delivered

product or this instruction manual, contact MOTOYAMA sales oﬃce or sales

agencyforpurchasebeforeoperation.

Tohandlethisproductsafely,thesymbolmarksandsignalwordsshownbelow

areusedinthisinstructionmanualtoalertriskasrequired.Thecontentsofsymbol

markandsignalwordaredescribedbelow.

Thismarkwiththissignalisusedwhenthepossibilityof

deathorseriousinjurytouserisassumedifhandlingthis

productincorrectly.

Thismarkandsignalareusedtocomplytheinstructions

topreventdamageofthisproductormalfunction.

Thismarkwiththissignalisusedwhenthepossibilityof

lightinjuryormiddleinjurytouser,orpropertydamage

isassumedifhandlingthisproductincorrectly.

1GeneralInformation

SafetyInformation

SymbolMark&

SignalWord Description

WARNING

CAUTION

IMPORTANT

ModelEA91A＆EA90A

CONTENTS

1.SAFETYINSTRUCTIONS

1.1GeneralSafetyInstructions

1.2

SafetyInstructionsonModelEA91AElectro

-pneumaticValvePositioner

1.3

SafetyInstructionsonModelEA90AElectro

-pneumaticValvePositioner

2.GENERALINFORMATION

2.1Purpose

2.2ApplicableRegulation

2.3Speciﬁcations

2.4ModelNumberingSystem

2.5NameplateIdentiﬁcation

2.6SystemConﬁguration

2.7Construction

3.PRINCIPLEOFOPERATION

4.INSTALLATION

4.1MajorDimensions

4.2InstallationConditions

4.3Pre-InstallationCheck

4.4

InstallationtoLinearMotionActuator

4.5

InstallationtoRotaryMotionActuator

4.6ConformityofCapacity

andCharacteristics

4.7InstallingDimensions

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5.EXTERNALCONNECTION

5.1PipingandWiringSystems

5.2PneumaticPiping

5.3ElectricalWiring

6.ADJUSTMENT

6.1Pre-adjustmentCheck

6.2AdjustingProcedure

6.3ZeroAdjustment

(LinearType,CamType:Common)

6.4ZeroAdjustmentforCam

6.5StrokeAdjustment

(LinearType,CamType:Common)

6.6SplitRangeAdjustment

6.7ReversePositionerAdjustment

(LinearType,CamType:Common)

6.8

ManualSwitchingMechanism-A/MSwitching

 (LinearType,CamType:Common)

7.MAINTENANCE

7.1PeriodicMaintenance

7.2MaintenanceProcedure

8.TROUBLESHOOTING

9.REFERENCEINFORMATION

9.1PredictedServiceLife

9.2DimensionofFitting

Page Page

CAUTION

WARNING

ModelEA91A＆EA90A

SAFETYINSTRUCTIONS

ⅡCT6

ⅡCT5

EA91A

EA90A

1.1.1

CompliancewithSafetyInstructions

Whenhandlingandoperatingtheelectro-pneumaticvalvepositioner,allthesafetyinstructionshereinshould

besecurelyfollowed.

1.1.2

ConformancewithSpeciﬁcations

BoththeModelEA91AElectro-pneumaticValvePositioner(ﬂameproofexplosion-protectedconstruction)and

theModelEA90AElectro-pneumaticValvePositioner(intrinsicallysafeexplosion-protectedconstruction)

havebeenapprovedinaccordancewiththeLaborSafetyandHygieneLawof"TechnicalCriteriaofElectrical

-mechanicalEquipmentExplosion-protectedConstruction"(hereafterreferredtoas"TechnicalCriteria").

Thecertiﬁed seal,andthenameplateorthecautionarylabeldescribingthespeciﬁcationstoberequired

protectingexplosionareattachedtoeachvalvepositionerinconformancewithallspeciﬁedrequirements.

Checktheitemsdescribedinthecertiﬁedseal,andthenameplateorthecautionarylabel,andusethis

product.

1.1

GeneralSafetyInstructions

1.2.1

LimitationofInstallationLocations

TheEA91AValvePositionercanbeinstalledinthehazardousareaaccordingtotheavailableexplosivegas

ofthevalvepositioner.

However,donotinstalltheEA91AValvePositionerintheClass0hazardousarea.

1.2.2

MaintenanceduringOperation

DonotperformmaintenanceoftheEA91AvalvepositionerwhilethepowerisbeingturnedON.When

performing maintenanceby opening the terminal box with the valvepositioner turned ONdue to

circumstances,carefullymakesurebeforeandduringmaintenancethattheexplosivegasesareabsentusing

gasdetector.

Whenimpossibletocheckwhethertheexplosivegasesareabsentornot,maintenancemustbelimitedto

visualinspectionandadjustmentofmovablepartsnotrequiringtheopeningoftheterminalboxsuchas

zeroadjustmentandstrokeadjustment.Becarefulnottogenerateimpactsparksduringthismaintenance.

1.2.3Repairs

a)TurnOFFthepowerandmovetheEA91AValvePositionertosafetyplacebeforerepairing.

b)Bothmechanicalandelectricrepairsare.limitedtorestoringthevalvepositionertoitsoriginalcondition

inprinciple.

c)Theuseislimitedtotherepairabledegreeonlyusinggeneraltoolswithoutsolderingiron.

1.2.4

ProtectionagainstConventionalShort-circuitCurrent

ThecoilpartﬁlledwithresinoftheEA91AValvePositioneristhespecialexplosion-protectedconstruction

compliancewiththeTechnicalCriteria.ThisTechnicalCriteriarequiresthe"protectionagainst4000A

conventionalshort-circuitcurrentfortheelectricaldeviceorpartwithresin-ﬁlledconstructiontobe

connectedtotheexternalpowersupply".ForthehostdevicesuchascontrollertobeconnectedtotheEA91A

ValvePositioner,usefuseorbreakerwithbreakingcapacity4000Aormore.

"WARNING"sealisaﬃxedonterminalbox.

1.2SafetyInstructionsonModelEA91AElectro-pneumaticValvePositioner

Applicable

ExplosiveGases

InstallationLocation

Explosion-protectionType

ModelNo.

IntrinsicSafetyType

TechnicalCriteria,ExiaⅡCT6

FlameproofType

TechnicalCriteria,ExsdⅡCT6X

AllgasesclassiﬁedinGroupleftandDiv.1and2Hazard

-ous Area.Non-Hazardous Area. (Locations speciﬁedin

TechnicalCriteriaandDivision1and2HazardousArea)

AllgasesclassiﬁedinGroupleftandDiv.0,1and2Hazard

-ousArea.AllNon-HazardousArea.(Locationsspeciﬁedin

TechnicalCriteriaandDivision0,1,and2HazardousArea)

1.1.3

ProhibitionofChangingSpeciﬁcationsandModiﬁcations

Donotchangethespeciﬁcationsormodifythevalvepositionersbyuser.

ModelEA91A＆EA90A

WARNING

1.3.1

LimitationofInstallationLocation

Theelectricaldevicewiththeintrinsicallysafeexplosion-protectedconstructionconsistsofthecombination

oftheintrinsicsafetydevice(EA90AElectro-pneumaticValvePositioner)tobeinstalledinhazardousarea

andthesafetybarrier(intrinsicsafetyrelateddevice)tobeinstalledinnon-hazardousarea.

TheEA90AValvePositionercanbeinstalledinhazardousareaaccordingtotheavailableexplosivegasof

theintrinsic safetydevice.However, donotinstallthesafetybarriertobeelectricallyconnected tothe

EA90A Valve Positioner inhazardous areaunless the safetybarrier isused incombinationwith other

explosion-protectedconstruction(ﬂameproofexplosion-protectedconstruction,etc.)

1.3.2

CombinationwithSafetyBarrier

ThesafetybarrierthatdoesnotindividuallypassthemodeltestincompliancewiththeTechnicalCriteria

shouldnotbeusedbyconnectingtothiselectric-pneumaticvalvepositionerEA90A.

Theexplosion-protecteddevicetypeofthesafetybarriershallbe"ⅡC "andtheclassiﬁcationshallbe"ia".

Besuretocomplywiththeconditionssincetherearelimitationsofinductanceandcapacitanceforsafety

rateandexternalwiring.(RefertoItem2.6.2"ModelEA90AElectro-pneumaticValvePositioner(IntrinsicSafety

Type)"inthismanualformaintenanceoftheEA90AElectro-pneumaticValvePositioner.)

1.3.3Maintenance

ConsultwithMotoyamaformaintenanceoftheEA90AElectro-pneumaticValvePositionerinprinciple.

Ifperformingmaintenancebyuser,readthefollowinginstructionshereinandcarefullyfollowtheinstructions

describedinChapter8"MAINTENANCE"forspeciﬁcprocedures.

(1)

MaintenanceofEA90AValvePositioner

WhenperformingmaintenancetheEA90AValvePositionerinstalledinhazardousarea,carefullymakesure

beforeandduringmaintenancewhethertheexplosivegasesareabsentornotbyusinggasdetector.

(2)MaintenanceduringOperation

DonotperformmaintenanceoftheEA90AValvePositionerwhilethepowerisbeingturnedON.

WhenperformingmaintenancewiththevalvepositionerturnedONduetocircumstances,maintenancemust

belimitedtovisualinspectionandadjustmentofmovablepartssuchaszeroadjustmentandstroke

adjustment.

(3)Repairs

a)TurnOFFthepower,disconnecttheexternalwiring,andthenmovetheEA90AValvePositionertonon

-hazardousarea.

b)Bothmechanicalandelectricrepairsarerestrictedtoonlyrestoringthevalvepositionertoits

originalconditioninprinciple.

c)Therepairbyusershallbelimitedtorepairusinggeneraltoolswithoutsolderingiron.

(4)VeriﬁcationofIntrinsicSafety



Checkthefollowingitemsinnon-hazardousareawhenconﬁrmingintrinsicsafetyoftheEA90AValve

PositioneratperiodicmaintenanceoftheEA90AValvePositionerandatreplacementofthepartsfor

repairs.

Checktheinsulationperformancebyapplyingvoltagewith500Vforoneminutetotheplus(+)

terminalortheminus(‒)terminal,andthegroundingterminaloftheterminalblock.

1.3SafetyInstructionsonModelEA90AElectro-pneumaticValvePositioner

TheEA90AElectro-pneumaticValvePositioner(intrinsicallysafeexplosion-protectedconstruction)consistsof

oneintrinsicsafetydevice(electro-pneumaticvalvepositioner)designedandproducedfollowingtothenew

TechnicalCriteriaandoneintrinsicsafetyrelateddevice(safetybarrier).

Use the safetybarrierindividuallypassed the devicetest forcombining withtheEA90AElectro-pneumatic

ValvePositioner.SelectthesafetybarrierthatcomplieswiththecombinationconditionsdescribedinItem2.6.2

"ModelEA90AElectro-pneumaticValvePositioner(IntrinsicSafetyType)inthismanual.

CAUTION

ModelEA91A＆EA90A

GENERALINFORMATION2

≦±0.3％F.S

≦6.0ℓ/minNor(Sup.140kPaG(1.4kgf/cm2G),Signal50％)

7.0ℓ/minNor(Sup.140kPaG(1.4kgf/cm2G),Signal50％)

≧100MΩ(with500VDCMegabetweenterminalandcase)

Polyurethaneresinpaint,Munsell2.5PB5/8Blue

Approx.2.9kg

【Note】(1)※Availableasoptionsoncustomer'srequest.

(2)ModelEA90A/EA90ACpositionerisnotavailableforreverseactiontypepilot.

4〜20mADC

250Ω

Max. 500kPaG(5.0kgf/cm2G)

IECIP65（※IECIP66）

Rc1/4（PT1/4）

G1/2

Linear

10〜65mm

(※over65‒135mm)

≦±1.0%F.S

≦ 1.0%F.S

≦ 0.1%F.S

10〜65mm

(※over65‒135mm)

≦±1.0%F.S

≦ 1.0%F.S

≦ 0.1%F.S

≦±2.0%F.S

≦ 1.5%F.S

≦ 0.3%F.S

−40〜100℃（−20〜60℃forexplosionprotection）

−20〜60℃

60°Eq%

90°Linear

60°（Linear）

※

≦±1.0%F.S

≦ 1.5%F.S

≦ 0.3%F.S

60°Eq%

90°Linear

60°（Linear）

※

2.1Purpose

TheModelEA91AandEA90AElectro-pneumaticValvePositionersaremountedtocontrolvalves.Theyconvert

electricsignalsfromthecontrollerintopneumaticpressuretocontroltheopeningofthecontrolvalveproperly.

Thevalvepositionersareofexplosion-protectedconstruction,andareimprovedthepositioningaccuracy

andresponseperformanceofprocesscontrolvalvesinstalledinhazardousareas.

2.2ApplicableRegulation

2.3StandardSpeciﬁcations

Thevalvepositionersdeliveredarepassedthetestinaccordancewithtechnicalcriteriaofexplosion-

protectedconstructionstandardforelectricalmachineandequipment(issuedbytheMinistryofLaborin

Japan,No.556,1996).

Painting

Mass

Type

InputCurrent

InputResistance

SupplyAirPressure

Structure

Connection

Characteristics

Explosion-protection

ProtectionClass

AirPipingConnection

ConduitConnection

OutputCharacteristics

StandardStroke

Linearity

HysteresisError

Deadband

(substancealone)

Repeatability

AirConsumption

Maximum

SupplyandExhaustofair

InsulationResistance

AmbientTemperature

ModelEA91A

LeverType

(SingleAction)

ModelEA91AC

CamType

(SingleAction)

ModelEA90A

LeverType

(SingleAction)

Model90AC

CamType

(SingleAction)

Flame-prooftype

(JIS)ExsdⅡCT6X

(NEPSl)ExdmⅡCCT6

(KOSHA)ExdmbⅡCT6

CertifdNo.12-AV4BO-0114

Intrinsicsafetytype

(JIS)ExiaⅡCT5

(NEPSl)ExiaⅡCT5

ModelEA91A＆EA90A

2.4ModelNumberingSystem

2.5NameplateIdentiﬁcation

2.6SystemConﬁguration

【Note】Ifmethodofleadingexternalcableisexplosion-proofconnector(Spec.code:T),applicablestandardisJIS,ﬂame-proof.

 IncaseofNEPSIﬂame-prooftype,ﬂame-proofpackingconnector(cableglands),certiﬁedbyNEPSI,shallbesuppliedby

customer.

FlameproofType

IntrinsicsafetyType

LeverType

CamType

ConduitType(standard)

Explosion-proofconectorwithpackingType(option)

(1)Thesafetycertiﬁedsealnameplate(OﬃcialCertiﬁcationPlate)isattachedonthetopofpositionercase.

(2)Theexplosionprotection"WARNING"nameplateisattachedontheupperpartofterminalbox.

(EA91AandEA90Ahavediﬀerentcontentseachother.)

(3)Thespeciﬁcationnameplateisattachedontherightsideofpositionercase.

(4)Theoriﬁceplateclassiﬁcationnameplateisattachedonthepilotcover.

2.6.1ModelEA91AElectro-PneumaticPositioner(FlameproofType)

HazardousArea

GeneralEquipment

Electro-pneumaticPositioner

ModelEA91A

PowerSource

4〜20mADC

Non-hazardousArea

EA91A

EA90A

（Blank）

Ｃ

（Blank）

Ｔ

Structure

Displacement

transferMethod

MethodofLeading

ExternalCable

Specifications BasicModelNo. SpecificationCode

Flameproof（EA91A,EA91AC）

労(平25.5)検 ※

本山製作所

IntrinsicSafety（EA90A,EA90AC）

本山製作所

株式

会社

株式

会社 ※Described date may be differed by

time of manufacture.

第TC17951号

労(平25.4)検 ※

第TC17899号

ModelEA91A＆EA90A

2.7Construction

2.7.1LeverType 2.7.2Built-inCamType

Cam

Restriction

OutputAirConnection

OutputPressureGauge

Auto/ManualSwitchingScrew

ZeroAdjustmentKnob

TerminalBox

ConduitConnection Nozzle Flapper

Body

Stroke

AdjustmentKnob

SupplyPressureGauge

SupplyAirConnection

Pilot

(Valve)

Right-handlateralface

4〜20mADC

Safetyearth

Earthbusbar

Source

Thesafetybarrierwhichisusedincombinationwithelectro-pneumaticpositionerEA90Amustbe

※2TIIScertiﬁedtype.

Forthesafetybarrierselection,pleaserefertothefollowingdataforIntrinsicallysafeapprovalof

modelEA90A.

①PerformanceclassiﬁcationandGroup

iaIIC

②Permissiblemaximumvalues

Ui=30V, Ii=100mA, Pi=0.75W

③Parameters

Ci=negligiblysmall

 Li=negligiblysmall

Tocombinewithasafetybarrier

2.6.2ModelEA90AElectro-PneumaticPositioner(IntrinsicSafetyType)

Hazardousarea Nonhazardousarea

Caution

※2TIIS;TechnologyInstitutionofIndustrialSafety(JAPAN)

※Motoyamadistributerecommendedsafetybarriers(MTLmade,787S+728+type).Ifyouareinterestedorhaveany

questionsabouttheproduct,pleasecontactoursalesoﬃcesorsalesagents.

Electro-pneumaticpositioner

EA90A

Safetybarrier Generaldevice

ModelEA91A＆EA90A

PRINCIPLE0FOPERATION3

Auto/Manual

SwitchingScrew

Nozzle

BackPressure

PilotValve

FigureofPrincipleofOperation

InnerValve

Filter

Restriction

OriﬁcePlate

SupplyPress.

ZeroAdjustmentKnob

ZeroAdjustmentSpring

ConduitConnection

Balancer

Armature

TorqueMotor TransmissionLever

TorqueMotorCoil

Nozzle

Output

Exhaust

Flapper

StrokeAdjustmentKnob

Actuator

ValveStem

StrokeAdjustmentLever

Transmission

FeedbackLever

The Model EA91A and EA90AElectro-Pneumatic Positioner isused asaccessorymeasuringinstrument to

pneumaticcontrolvalves.Thisconvertselectricsignalsfromthecontrollerintopneumaticpressuretoposition

theopeningofpneumaticcontrolvalve.

Asthesignalcurrentfromthecontrollerormanualoperatorincreases,thetorquemotorcoilgeneratesmagnetic

poleonthearmature.Thearmaturereceivesrotarytorqueinthecounter-clockwisedirection,andvariesthe

distancebetweenthenozzleandtheﬂapper.Asaresult,thenozzlebackpressurechanges,andthepilot

valvereactsaccordingly.

Theoutputairofpilotvalveissuppliedtothediaphragmmotor,andmovesthecontrolvalve.Thevalvestem

movementis mechanicallytransmittedto the feedbackspring throughfeedbacklever,transmissionlever,and

strokeadjustmentlever,andbalancesthevalvemovementatapositionthatisequaltothegeneratedtorquedue

tothesignalcurrent.

FeedbackSpring

ModelEA91A＆EA90A

INSTALLATION4

4.1Dimensions Unit :mm

LeverType

AirConnection

2-Rc1/4

ConduitConnection

G1/2

129

45.5 137

146 (AType)

206 (BType)

218

58.5

164.5

51 7

45.5 137

218

KXB-LO-16F

(SpecialOption)

KXB-LO-16

(Standard)

135

12.5

153.5

（LeftLateralView）

Built-inCamType

（Seeaboveasleftlateralview）

LeadingExternalCable

◇ConduitType

Model : EA91A(C),EA90A(C)

◇

FlameproofPackingType(AdditionalOption):ApplicablecableOD:φ9.1〜φ11

Model : EA91A(C)T

ActuatorSize(OuterDia.)

φ200〜φ330

φ400〜φ650

Type

Ａ

Ｂ

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