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Mounting and Operating Instructions
EB 8355-2 EN Edition December 2016
Type 3767 Electropneumatic Positioner
Fig. 1: Type 3767
Definitionofsignalwords
DANGER!Hazardous situations which, if not avoided, will result in death or seri-ous injury
WARNING!Hazardous situations which, if not avoided, could result in death or seri-ous injury
NOTICEProperty damage message or mal-function
Note:Additional information
Tip:Recommended action
2 EB8355-2EN
Contents
EB8355-2EN 3
1 Generalsafetyinstructions.............................................................................52 Designandprincipleofoperation..................................................................62.1 Versions and article code ................................................................................92.2 Technical data .............................................................................................102.3 Additional equipment ...................................................................................112.4 Summary of explosion protection approvals ...................................................123 Mountingoncontrolvalves..........................................................................143.1 DirectattachmenttoType 3277Actuator .......................................................143.2 AttachmentaccordingtoIEC 60534-6 ...........................................................213.2.1 Mounting sequence ......................................................................................223.2.2 Initial adjustment of travel .............................................................................223.3 Attachment to rotary actuators ......................................................................253.3.1 Mounting the lever with feeler roll ..................................................................263.3.2 Mounting the intermediate piece ...................................................................263.3.3 Basic setting of the cam disk .........................................................................283.3.4 Reversingamplifierfordouble-actingactuators ..............................................324 Connections................................................................................................344.1 Pneumatic connections..................................................................................344.1.1 Pressure gauges ...........................................................................................344.1.2 Supply pressure ...........................................................................................344.2 Electrical connections ...................................................................................364.2.1 Switchingamplifier ......................................................................................375 Operation...................................................................................................385.1 Tuningthepositionermountedontothecontrolvalve .......................................385.1.1 AdjustingtheproportionalbandXpandairdeliveryQ ..................................395.1.2 Settingsforactuatorwith“actuatorstemextends”fail-safeaction .....................405.1.3 Settingsforactuatorwith“actuatorstemretracts”fail-safeaction .....................405.2 Changingtheoperatingdirection ..................................................................415.3 Adjustingthelimitcontacts ...........................................................................425.4 Adjustingthepositiontransmitter...................................................................44
4 EB8355-2EN
Contents
6 Convertingandretrofittingthepositioner.....................................................476.1 Convertingfromelectropneumatictopneumatic .............................................476.2 Installingthelimitcontacts ............................................................................486.3 Installingasolenoidvalve .............................................................................486.4 Removingthesolenoidvalve .........................................................................497 Servicingexplosion-protecteddevices..........................................................498 Dimensionsinmm.......................................................................................50
EB8355-2EN 5
Generalsafetyinstructions
1 GeneralsafetyinstructionsFor your own safety, follow these instructions concerning the mounting, start up and opera-tion of the device: − Thedeviceistobemounted,starteduporoperatedonlybytrainedandexperienced
personnel familiar with the product. According to these mounting and operating instruc-tions,trainedpersonnelreferstoindividualswhoareabletojudgetheworktheyareas-signedtoandrecognizepossibledangersduetotheirspecializedtraining,theirknowl-edgeandexperienceaswellastheirknowledgeoftheapplicablestandards.
− Anyhazardsthatcouldbecausedinthevalvebytheprocessmedium,thesignalpres-sureorbymovingpartsaretobepreventedbytakingappropriateprecautions.Ifinadmissiblemotionsorforcesareproducedinthepneumaticactuatorasaresultofthesupplypressurelevel,itmustberestrictedusingasuitablesupplypressurereducingstation.
− Explosion-protectedversionsofthisdevicearetobeoperatedonlybypersonnelwhohasundergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplosion-pro-tecteddevicesinhazardousareas.Seesection7.
To avoid damage to any equipment, the following also applies: − Proper shipping and storage are assumed.
Note:Devices with a CE marking fulfill the requirements of the Directives 2014/34/EU and 2014/30/EU. The declaration of conformity is included at the end of these instructions.
6 EB8355-2EN
Designandprincipleofoperation
2 Designandprincipleofoper-ation
The positioner consists of an electropneumat-ic converter and a pneumatic unit equipped withaleverfortravelpick-up,ameasuringdiaphragm, and the pneumatic control system withnozzle,diaphragmlever(flapperplate),andbooster.The positioner is designed either for direct attachmenttoSAMSONType 3277Actuatorsor for attachment to actuators according to NAMUR(IEC 60534-6)usinganadapterhousing.Thepositionercanbeadditionallyequippedwith either inductive limit contacts and/or a solenoid valve or position transmitter.Thecontrolsignal,e.g.4to20 mA,issuedbythe controller is transmitted to the electropneu-maticconverter(13)whereitisconvertedintoa proportional pressure signal pe.The positioner operates according to the force-balanceprinciple.Thevalvetravel,i.e.thevalveposition,istransmittedtothepick-uplever(1)overthepin(1.1)anddeterminestheforceoftherangespring(4).Thisforceiscompared to the positioning force generat-edbythepressurepe at the measuring dia-phragm(5).If either the control signal or the valve posi-tionchanges,thediaphragmlever(3)moves,altering the distance to the nozzle (2.1 or 2.2),dependingontheadjusteddirectionofaction of the positioner.Thesupplyairissuppliedtothebooster(10)andthepressureregulator(9).
ThecontrolledsupplyairflowsthroughtheXp restriction(8)andthenozzle(2.1,2.2)andhitsthediaphragmlever(flapperplate).Anychangeinthereferencevariableorthevalve position causes the pressure to change upstreamordownstreamofthebooster.Theaircontrolledbythebooster(signalpres-sure pst)flowsthroughthevolumerestriction(11)tothepneumaticactuator,causingtheplug stem to move to a position correspond-ingtothereferencevariable.TheadjustableXprestriction(8)andvolumerestriction(11)areusedtooptimizetheposi-tioner control loop.Thepick-uplever(1)andtherangespring(4)mustbeselectedtomatchtheratedvalvetravel and the nominal span of the reference variable.
PositionerwithinductivelimitcontactsIn this version, the rotary shaft of the position-ercarriestwoadjustabletagswhichactuatethebuilt-inproximityswitches.
PositionerwithsolenoidvalveWhen the positioner is equipped with a so-lenoidvalve,thevalvecanbemovedtothefail-safeposition,regardlessoftheposition-er's output signal. If a control signal corre-spondingtothebinarysignal'0'(OFF)isap-plied to the input, the signal pressure pst is shut off and the actuator is vented. The actu-atorspringsmovethevalvetoitsfail-safepo-sition.
EB8355-2EN 7
Designandprincipleofoperation
1 Lever1.1 Pin1.2 Clamp2.1 Nozzle >>2.2 Nozzle <>3 Diaphragm lever4 Range spring5 Measuring
diaphragm6.1 Span adjuster
6.2 Zero adjuster7 Turnboard8 XP restriction9 Pressure regulator10 Booster11 Volume restriction12 Solenoid valve
(option)13 i/p converter
4
13 6.1 6.2
3 7 8 9 11
7 8 9 10 11 12
6.1 4 6.2
2.13
2.2
51
1.1
1.2
Pe
Supply 9
V
PstQXp
pi mA13
Travel
Fig. 2: Functional diagram and inside view
8 EB8355-2EN
Designandprincipleofoperation
When a control signal corresponding to the binarysignal'1'(ON)isappliedtothein-put, the signal pressure pst is applied to the actuator, allowing the valve to move accord-ingtotheinputsignalissuedbythecontrolequipment.
PositionerwithpositiontransmitterA positioner containing a position transmit-tercannotbeequippedwithintegratedlimitcontacts or an integrated solenoid valve since the position transmitter requires most of the space inside.The position transmitter is used to assign the valve position, i.e. the valve travel, to an out-putsignalof4to20 mA.Thetuningofthepositiontransmitterensuresthatbothendpositions "valve CLOSED" or "valve OPEN" aswellasallintermediatepositionscanbesignalized. Since the valve position is signal-ized independently of the input signal to the positioner, the position transmitter is a suit-ableoptionforcheckingtheactualvalvepo-sition.
EB8355-2EN 9
Designandprincipleofoperation
2.1 VersionsandarticlecodeElectropneumaticpositioner Type 3767- x x x 0 1 x x x x x x 0 0 0
Explosion protectionWithout 0 2
II2GEx iaIICT6accordingtoATEX 1CSA/FM intrinsically safe/non incendive 3
II3GExnAIIT6acc.toATEX 8Additional equipmentWithout 0Inductivelimitcontacts2xSJ2-SN 2(Analogpositiontransmitter4to20 mA)1) 6 0 03/2-waysolenoidvalveWithout 06 V DC 212 VDC 324 V DC 4Type of mountingStandard range spring 0 1Pneumatic connections¼-18 NPT 1ISO 221/1-G ¼ 2Electrical connectionsPlasticcableglandM20 x 1.5,blue 1 0PlasticcableglandM20 x 1.5,black 2 0CableglandM20 x 1.5,nickel-platedbrass 2 1Housing versionDie-castaluminum 1CrNiMo steel 2Referencevariable4 to 20 mA 10 to 20 mA 21to 5 mA 3Temperature rangeStandard 0Low-temperatureversion Tmin ≥–45 °C;optionallimitcontacts,solenoidvalve 2 1 2Special versionsWithout 0 0 0
1) AvailableuntilMarch2011
10 EB8355-2EN
Designandprincipleofoperation
2.2 TechnicaldataPositioner
Travelrange,adjustable Directattachment:7.5to30 mmAttachmentaccordingtoIEC 60534-6:7.5to120 mmor
Opening angles 30°to90°dependingonthecamdisk
Referencevariable
Signal range 0/4to20 mA 1to5mA
Span 8 to 20 mA 2 to 4 mA
Coil resistance Riat20 °C 200 Ω 880 Ω
Supply air 1.4to6 bar(20to90 psi)
Air quality acc. toISO 8573-1
Max. particle size and density: Class 4Oilcontent:Class3·Pressuredewpoint:Class3oratleast10 Kbelowthelowest
ambienttemperaturetobeexpected
Signal pressure pst(output) Canbelimitedbetweenapprox.2.5to6.0 bar(38to90 psi)
Characteristic Linearcharacteristic,deviationfromterminal-basedconformity≤1 %
Hysteresis ≤0.3 %
Sensitivity ≤0.1 %
Direction of action Reversible
ProportionalbandXp <1to2.5 %(proportional-actioncoefficientKp:>100to40)
Air consumptionAt1.4barsupplypressure:≤280 ln/h
At6barsupplypressure:≤280 ln/hWith lowest setting of pressure
regulator
Air output capacity Tofillactuatorwithair:3.0mn³/hToventactuator:4.5mn³/h
8.5mn³/h14.0 mn³/h
Permissibleambienttemperature
–20to80 °Cwithplasticcablegland–40to80 °Cwithmetalcablegland(specialversiondownto–45 °C)–20to70 °CwithpositiontransmitterSeetestcertificatesintheappendixforexplosion-protecteddevices
Influences Temperature: ≤0.3 %/10 KSupplyair:≤1 %between1.4and6 barVibration:Nonebetween10and150 Hzand4 g
Explosion protection SeetestcertificateintheappendixfortypeofprotectionEx iaIICT6
Degree of protection IP 54(IP 65andNEMA4Xpossiblebyfittingafiltercheckvalve.Seetableonaccessoriesonpage 19)
Electromagneticcompatibility ComplyingwithEN 61000-6-2,EN 61000-6-3andNAMURRecommendationNE 21
Compliance ·
Weight Approx.1 kg
EB8355-2EN 11
Designandprincipleofoperation
2.3 AdditionalequipmentInductivelimitcontacts
Two proximity switches SJ2-SN
Control circuit Values according to downstream transistor relay
Hysteresis at rated travel ≤1 %
Solenoidvalve
Input Binary DC voltage signal
Nominal signal 6 V DC 12 VDC 24 V DC
Signal'0'(noresponse) DCsignalat–25 °C ≤1.2 V ≤2.4 V ≤4.7 V
Signal'1'(response) DCsignalat80 °C ≥5.4 V ≥9.6 V ≥18 V
Maximumpermissiblesignal 28 V 25 V 32 V
Coil resistance Riat20 °C 2909 Ω 5832 Ω 11714 Ω
Air consumption in steady state In addition to that of the positioner: OFF ≤60 ln/h · ON ≤10 ln/h
Closing time for
Rated travel and signal pressure range(KVS=0.14)
Type 3277Actuator 120 cm² 240 cm² 350/355 cm² 700 cm²
0.2to1 bar
≤0.5s
≤1 s ≤1.5 s ≤4 s
0.4to2 bar ≤2 s ≤2.5 s ≤8 s
0.6to3 bar ≤1 s ≤1.5 s ≤5 s
Positiontransmitter1),2) – Outputcircuit,intrinsicallysafe
Output signal Two-wireconnection4to20 mA,reversibleoperatingdirection
Auxiliary power Minimumterminalvoltage:12 V DCmax.45 V DC Only with intrinsically safe circuit
Characteristic Linear characteristicDeviationfromcharacteristicaccordingtoterminalpointmethod:≤1 %
Hysteresis ≤0.6 %
Response ≤0.1 %
Influenceofpowersupply ≤1 %whenvoltagechangesoccurwithinthespecifiedlimits
High-frequencyinfluence ≤0.1 %,f=150 MHz,1 Wpoweroutputatadistanceof0.5 m
Loadinfluence ≤0.1 %
Permissibleambienttemperature –20to70 °C –20 to à See test certificate
Ambienttemperatureinfluence ≤0.4 %onlowermeasuringrangevalue,≤0.2 %onmeasuringspan
Ripple of output signal ≤0.3 %
1) Databasedonstandardspring(15 mmtravelwithType 3277Actuator)andgainof100.2) AvailableuntilMarch2011
12 EB8355-2EN
Designandprincipleofoperation
2.4 SummaryofexplosionprotectionapprovalsType Certification Typeofprotection
3767 STCC Number No.974 0ExiaIICT6X2ExsIIT6XValid until 2017-10-01
3767-1
No. RUCDE.08.006971ExiaIICT6/T5/T4GbXExtbIIICT80°CDbXDate 2014-12-15
Valid until 2019-12-14
Number 13-KB4BO-0037
ExiaIICT6/T5/T4Date 2013-01-31
Valid until 2017-01-31
No. PTB01ATEX2167
II2GExiaIICT6Date 2001-11-29EC type examination certificate
3767-3
®No. 1607848 Ex iaIICT6:ClassI,Zone0;
Class I, II, Div. 1, Groups A, B, C, D, E, F, D;Class I, II, Div. 2, Groups A, B, C, D, E, F, D;
Date 2005-09-16
No. 3020228 ClassI,Zone0AEx iaIICClass I, II, III, Div. 1, Groups A, B, C, D, E, F, GClassI,Div.2,GroupsA,B,C,D;ClassII,Div.2GroupsF,G;ClassIII;
Date 2005-02-28
3767-6 IECEx No. IECExTSA05.0004X ExiaI/IICT6IP65,ExnI/IICT6IP65Date 2005-05-24
3767-8
No. RUCDE.08.00697
2ExnAicIICT6/T5/T4GcXDate 2014-12-15
Valid until 2019-12-14
Number PTB01ATEX2170X
II3GExnAIIT6Date 2003-05-28Statement of conformity
EB8355-2EN 13
Designandprincipleofoperation
14 EB8355-2EN
Mountingoncontrolvalves
3 MountingoncontrolvalvesThepositionercanbemountedeitherdirectlytoSAMSONType 3277Actuatorortocon-trolvalveswithcastyokesorrod-typeyokesaccordingtoIEC 60534-6(NAMUR).Combinedwithanintermediatepiece,thepositionercanalsobemountedonrotaryactuators. The standard positioner is deliv-ered without accessories. Any additionally required accessories are listed together with theirordernumbersinthefollowingtables.Do not remove the protective cover on the backofthepositioneruntilyouactuallystartto attach the positioner.
MountingpositionandoperatingdirectionThe operating direction of the positioner also determines its mounting position on the actu-atorasillustratedinFig. 3,Fig. 4andFig. 6.Theturnboard(7inFig. 2)atthepositionermustbemountedcorrespondingly.For an increasing input signal (reference variable),thesignalpressurepst can either beincreasing(directaction>>)ordecreas-ing(reverseaction<>).Similarly,astheref-erencevariabledecreases,thesignalpres-surecaneitherdecrease(directaction>>)orincrease(reverseaction<>).Ontheturnboard(7),theoperatingdirectionisindicatedbysymbols(direct>>,reverse<>).Dependingonthepositionoftheturn-board,theadjustedoperatingdirectionandtheassociatedsymbolbecomevisible.If the required operating direction does not correspondtothevisiblesymbol,orifyouwant to change the operating direction, re-
movethefasteningscrewattheturnboard,turntheboardby180°andrefastentheturnboard.Makesurethethreerubbergas-kets inserted in the housing remain in posi-tion.
NOTICEWhen any subsequent changes are made, e.g. reversing the operating direction of the positioner control loop or changing the actuator fail-safe action from “actuator stem extends” to “actuator stem retracts” or vice versa, the positioner's mounting position must be changed accordingly.
3.1 DirectattachmenttoType 3277Actuator
Note:The required accessories are listed in Table 1 to Table 4 on page 18.
The attachment of the positioner either on the left or right side of the actuator (always look-ing onto the signal pressure connection or switchoverplate)isdeterminedbythere-quired operating direction of the positioner, i.e. >> or <>.
EB8355-2EN 15
Mountingoncontrolvalves
SUPPLY
Actuatorstemextends
Actuatorstemretracts
Internal signal pressure connection
Sideviewofconnectionblock
Signal pressure connection over piping
ConnectionblockTipofgasket(16)
Operating direction >> Left attachment
Operating direction <> Left attachment
With gasket (new) With switch plate (old)
Switchplate(13)
Gasket(16)
Cover
Switchover plate Signal pressure input
Signal pressure input for left attachment
Seal with filter
With right attachment
Marking
MarkingSymbol
Actuator stem extends
Actuator stem retracts
Operating direction <> Right attachment
Actuatorstemextends>> Operating direction <>Left attachment Right attachment
Actuatorstemretracts<> Operating direction >>
Left attachment Right attachment
Operating direction >> Right attachment
Fig. 3: Mounting position and connection of signal pressure for Type 3277 Actuator (top) and Type 3277-5 Actuator (120 cm²) (bottom)
16 EB8355-2EN
Mountingoncontrolvalves
1. Fastentheclamp(1.2)totheactuatorstem, making sure that the fastening screw rests in the groove of the actuator stem.
2. Fastentheassociatedpick-upleverD1orD2(with355/700 cm²actuators)tothefeedbackleverofthepositioner.
3. Securetheintermediateplate(15)withthe gasket facing towards the actuator yoke.
4. Positionthepositionersuchthatthepick-upleverslidesinlineoverthepin(1.1)oftheclamp(1.2).Fastenthepositionertotheintermediateplate(15).
5. Mountcover(16).6. Check whether the correct range spring
hasbeeninstalledaslistedinTable 4.Range spring 1 is installed as standard. If necessary, replace it with range spring 2includedintheaccessoriesandfixitattheouterhook-inholes.
Actuatorswith240,350,355,and700 cm²diaphragmareas7. Makesurethatthetipofthegasket (16)
projecting from the side of the connec-tionblock(Fig. 3,middle)ispositionedtomatchtheactuatorsymbolfortheac-tuator'sfail-safeaction"actuatorstemextends" or "actuator stem retracts".If this is not the case, unscrew the three fastening screws and lift off the cover. Turnthegasket(16)by180°andre-in-sert it.Theoldconnectionblockversionrequirestheswitchplate(13)tobeturnedtoalign
theactuatorsymbolwiththearrowmark-ing.
8. Placetheconnectionblockwiththeasso-ciated gaskets against the positioner and the actuator yoke. Fasten it using the screw.Foractuatorswithfail-safeaction"actua-tor stem retracts", additionally mount the external signal pressure pipe.
Actuatorwith120 cm²diaphragmareaThe signal pressure is transmitted to the dia-phragmchamberovertheswitchoverplate(Fig. 3andFig. 4,bottom).7. Removescrewplugonthebackofthe
positioner(Fig. 5)andsealthesidesig-nal pressure output with the stopper in-cluded in the accessories.
8. Mount the positioner so that the hole in theintermediateplate(15)coverstheseal in the hole of the actuator yoke.
9. Align the switchover plate with the corre-spondingactuatorsymbol.Fastenittothe actuator yoke.
NOTICEIf a solenoid valve or a similar device is additionally mounted onto a 120 cm² actuator, do not remove the M3 screw plug at the back of posi-tioner. In this case, the signal pres-sure must be transmitted from the sig-nal pressure output to the actuator over an additional connecting plate (Table 2). The switchover plate is not used in this case.
EB8355-2EN 17
Mountingoncontrolvalves
AirpurgingofthespringchamberIfthespringchamberoftheactuatoristobepurged with the exhaust air from the posi-tioner,usepiping(Table 3)toconnectthespringchamber(with"actuatorstemex-tends"version)totheconnectionblock.Todo so, remove the stopper from the connec-tionblock.Foranactuatorwithfail-safeac-tion "actuator stem retracts" and in
Type 3277-5Actuatorswithaneffectivedia-phragmareaof120 cm²,theexhaustairfrom the positioner is connected to the spring chamberoveraninternalhole.
NOTICEWhen the valve is installed, the side cover of the actuator must be mount-ed such that the vent plug points downward.
1.2
D2
D1
15Vent plug
Vent plug must point downward when the valve is installed
View onto the signal pressure connectionLeftattachment Rightattachment
Cover
Switchover plate
Intermediateplate(15)
Clamp(1.2)
Signalpressureborehole
240 cm²350 cm²355 cm²700 cm²
120 cm²
Type 3277
Type 3277-5
Fig. 4: Mounting the clamp
18 EB8355-2EN
Mountingoncontrolvalves
Table 1: Lever (see Fig. 4) Mountingkit
Actuator size Lever with associated clamp and intermediate plate Order no.
120 cm² D1leverwithstopperforoutput(38)Standard version 1400-7116
Versioncompatiblewithpaint 1402-0944
240/350 cm² D1lever(33 mmlongwith17 mmclamp)
Standard version 1400-6370
Versioncompatiblewithpaint 1402-0942
355/700 cm² D2lever(44 mmlongwith13 mmclamp)
Standard version 1400-6371
Versioncompatiblewithpaint 1402-0943
Table 2: Switchover plates and connecting plates Order no.
Switchoverplate(for120 cm²actuator) Type3277-5xxxxxx.00Actuator(old) 1400-6819
New switchover plate Type3277-5xxxxxx.01Actuator(new)orhigher 1400-6822
Connecting plate for additional attachmentof, e.g. a solenoid valve
Type3277-5xxxxxx.00Actuator(old),G 1/8
Type3277-5xxxxxx.00Actuator(old),1/8 NPT1400-68201400-6821
New connecting plate Type3277-5xxxxxx.01Actuator(new)orhigherG 1/8 and 1/8 NPT 1400-6823
Note: Only new switchover and connecting plates can be used with new actuators (Index 01). Old and new plates are not interchangeable.
Requiredconnectionblockfor240,350,355,and700 cm²actuator(includinggasketsandfasteningscrew)
G ¼ 1400-8819
¼ NPT 1402-0901
Table 3: Pipe connection Material Actuatorsize[cm²] Order no.
Required pipe connection including screw fitting
For actuator with "actuator stem retracts" or with air purging of the top diaphragm cham-ber
Steel 240 1400-6444
Stainless steel 240 1400-6445
Steel 350 1400-6446
Stainless steel 350 1400-6447
Steel 355/700 1400-6448
Stainless steel 355/700 1400-6449
Table 4: Range spring Travel[mm] Actuatorsize[cm²] Order no.
2(4.5coils) 7.5 120, 240 1400-6443
1(9.5coils,installedasstandard) 10to15 120,240and350 1400-6442
2 15 355/700 1400-6443
1 30 355/700 1400-6442
EB8355-2EN 19
Mountingoncontrolvalves
Accessories Order no.
Pressuregaugemountingblock(onlyfor120 cm²)G ¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge mounting kit for supply pressure and signal pressure
Stainlesssteel/brass 1400-6950
Stainless steel/stainless steel 1400-6951
Filtercheckvalve,replacesventplugandincreasesthedegreeofprotectiontoIP 65
FiltercheckvalveinhousingwithG ¼thread
Polyamide, IP 65degreeofprotection 1790-7408
1.4301,IP 65degreeofprotection 1790-7253
Polyamide, NEMA 4 degree of protection 1790-9645
1.4301, NEMA 4 degree of protection 1790-9646
Assortment of spare parts including gaskets and diaphragms 1400-9895
20 EB8355-2EN
Mountingoncontrolvalves
EB8355-2EN 21
Mountingoncontrolvalves
Leftattachment Rightattachment
Mountingpositionontheplatelookingontothetravelpick-up(20),actuatorfacingupward(seealsoFig. 7)
Actuatorwith“actuatorstemextends”(FA)fail-safeaction
Direct operating direction >>
Reverse operating direction <>
Direct operating direction >>
Reverse operating direction <>
20
Pneumatic connections Electrical connectionElectrical connection
Actuatorwith“actuatorstemretracts”(FE)fail-safeaction
Direct operating direction >>
Reverse operating direction <>
Direct operating direction >>
Reverse operating direction <>
Pneumatic connectionPneumatic connection Electrical connections
20
Fig. 6: Attachment to the left or right of the valve for NAMUR attachment (IEC 60534-6)
3.2 AttachmentaccordingtoIEC 60534-6
Required mounting parts are listed in Table 5.Theratedtravelofthevalvedetermines which lever and range spring (Table 6)arerequired.An adapter housing is used for attachment (Fig. 7).Thevalvetravelistransmittedbythelever(18)andtheshaft(25)tothebracket(28)oftheadapterhousingandthenpassedontothepin(27a)ontheleveroftheposi-tioner.Toensurethatthepin(27a)isproper-lylocatedinthebracket(28),fixthespringincludedintheaccessoriesatthebackofthepositionerhousingasillustratedinFig. 5.
Spring Screw plug
Fig. 5:Installing the spring on the back of the housing
Thepositionercanbemountedeitherontheleftorrightsideofthecontrolvalve(Fig. 6andFig. 7).Turnthepositionerattheadapt-erhousingby180°todetermineorchangethe operating direction of the positioner/control valve unit.
22 EB8355-2EN
Mountingoncontrolvalves
3.2.1 Mountingsequence Î Mounting parts and range spring: see Table 4/Table 5.InstallationinFig. 7.
Valvewithcastyoke1. Screwtheplate(20)tothestemconnec-
tor of the actuator and plug stems using the countersunk screws.Usetheadditionalbracket(32)for2100and2800 cm²actuatorswith120 mmtravel.
2. Removetherubberstopperfromtheadapter housing and fasten the adapter housing either on the left or right of the NAMURribusingthehexagonheadscrewasshowninFig. 6.
Valvewithrod-typeyoke1. Screwtheplate(20)tothefollower
clamp of the plug stem.2. Screwthestuds(29)intotheadapter
housing.3. Place the adapter housing with the plate
(30)ontoeithertheleftorrightvalverodandscrewtightusingthenut(31).Makesure that the adapter housing is at the correctheighttomountthelever(18)sothat it is in a horizontal position when thevalveisatmid-travel.
4. Screwthepin(19)intothemiddlerowofholesontheplate(20)andlockitintoposition over the correct lever marking (1 or2)asindicatedinTable 6.
5. Clamptheclip(21)ontothelever(18).Theclipmustbeclampedontothelever(18)withtheopensidefacingdown-
ward when the positioner is attached with the air connection at the front.
6. Attachthelever(18)includingclampingplate(22)totheshaft(25),makingsurethattheclipclaspsthepin(19).
3.2.2 Initialadjustmentoftravel
1. Movethevalveto50 %travel.2. Movetheshaft(25)intheadapterhous-
ingsothattheblackpointer(24)match-es the cast marking on the adapter hous-ing.
3. Fastentheclampingplate(22)inthispo-sitionusingthescrew(23).
4. Screwthepin(27a)intothepositionerlever on the side where the press nut is located. Lock it in position with the hex nutontheotherside,observingthemounting position A or B according to Table 6andFig. 7.
5. Place the positioner on the adapter hous-ing, taking into account the mounting di-rection. Fasten it, making sure that the pin(27a)restsagainstthebracket(28).Thepinmustnotslipoutofthebracketonce installed.
6. Check whether the correct range spring hasbeeninstalledaslistedinTable 6.Range spring 1 is installed as standard. If necessary, replace it with range spring 2includedintheaccessoriesandfixitattheouterhook-inholes.
7. Performpositionersettingasdescribedinsection 5.1.
EB8355-2EN 23
Mountingoncontrolvalves
21,51
24 25 22
32
31
20 19
19 21 2023 18
2930
2826
A B27b
27a
Mountingposition
AttachmenttoNAMURrib
Attachmenttorods
18 Lever N1, N219 Pin20 Plate21 Clip22 Clamping plate23 Screw24 Pointer25 Shaft26 Lever of positioner27a Coupling pin27b Lock nut28 Bracket29 Studs30 Plate31 Nuts32 Mountingbracket
Fig. 7: Attachment according to IEC 60534-6 (NAMUR)
24 EB8355-2EN
Mountingoncontrolvalves
Table 5:Mounting kits Control valve Travel[mm] With lever Order no.
NAMUR mounting kit, seeFig. 7forparts.
Valve with cast yoke7.5to60 N1(125 mm) 1400-6787
22.5to120 N2(212 mm) 1400-6789
Rod diameter [mm]ofrod-type yoke
20to25 N1 1400-6436
20to25 N2 1400-6437
25to30 N1 1400-6438
25to30 N2 1400-6439
30to35 N1 1400-6440
30to35 N2 1400-6441
Attachment to Fisher and Masoneilan linear actuators (oneofeachmountingkitsisrequiredperactuator)
1400-6771 and
1400-6787
Additional range spring acc. to Table 6
Rangespring1(9.5coils,installedasstandard)Rangespring2(4.5coils)
1400-64421400-6443
Accessories Order no.
PressuregaugemountingblockG ¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge kitStainlesssteel/brass 1400-6950
Stainless steel/stainless steel 1400-6951
Filtercheckvalve,replacesventplugandincreasesthedegreeofprotectiontoIP 65
FiltercheckvalveinhousingwithG ¼thread
Polyamide,IP 65degreeofprotection 1790-7408
1.4301,IP 65degreeofprotection 1790-7253
Polyamide, NEMA 4 degree of protection 1790-9645
1.4301, NEMA 4 degree of protection 1790-9646
Assortment of spare parts including gaskets and diaphragms 1400-9895
Table 6:Mounting position
Travel[mm]1) 7.5 15 15 30 30 60 30 60 60 120
Pin at marking 1) 1 2 1 2 1 2 1 2 1 2
Distancebetweenpinandleverful-crum 42to84 mm 84to168 mm
With lever N1(125 mmlong) N2(212 mmlong)
Pin(27a)atposition A A B A B
Requiredrangespring(seeTable 5) 2 1 1 1 1
1) Calculate intermediate values
EB8355-2EN 25
Mountingoncontrolvalves
3.3 Attachmenttorotaryactuators
Thepositionercanalsobemountedonro-taryactuatorsaccordingtoVDI/VDE 3845(September2010)usingthemountingpartslistedinTable 7.
Table 7: Complete mounting parts, including range spring 2, but not including the cam disk Order no.
Actuatoracc.toVDI/VDE 3845(September2010),level2 1400-8815
SAMSONType 3278ActuatorVETEC Type S
160 cm² 1400-7103
320 cm² 1400-7104
VETEC Type R R 110toR 250 1400-7117
Attachment Masoneilan
CamflexI,DN 25to100 1400-7118
CamflexI,DN 125to250 1400-7119
CamflexII 1400-7120
Requiredrangespring Order no.
Standardoperationofreferencevariable,rangespring2(4.5coils) 1400-6443
Split-rangeoperation,rangespring1(9.5coils,installedasstandard) 1400-6442
Camdiskwithaccessories Order no.
~,linearbasiccharacteristic3)~,equalpercentagebasiccharacteristic3)~, linear 1)~, equal percentage 2)~, linear 1)~, equal percentage 2)~, linear 1)~, equal percentage 2)
(0050-0072),0to90°openingangle,alsoforType 3310(0050-0073),0to90°openingangle(0050-0080),0to70°openingangle,forcontrolbutterflyvalves(0050-0081),0to70°openingangle,forcontrolbutterflyvalves(0050-0074,VETEC),0to75°openingangle(0050-0075,VETEC),0to75°openingangle(0059-0007,Camflex)tobesetbetween0and55°(0059-0008,Camflex)tobesetbetween0and55°
1400-6664
1400-66651400-6774
1400-6775
1400-66661400-66671400-66371400-6638
Accessories
Seelistonpage 24
1) Linearizestheflowcharacteristic2) Createsanequalpercentageflowcharacteristic3) Based on opening angle
26 EB8355-2EN
Mountingoncontrolvalves
The rotary motion of these actuators is con-vertedintoalinearmotionrequiredbythepneumatic control unit of the positioner using the cam disk of the actuator shaft and a feel-er roll on the positioner lever.
NOTICECheck whether the correct range spring has been installed as listed in Table 7. Range spring 1 is installed as standard. If necessary, replace it with range spring 2 included in the accessories and fix it at the outer hook-in holes.
Double-actingspringlessrotaryactuatorsre-quire the use of a reversingamplifier on the connection side of the positioner housing (seesection 3.3.4).Whenusingareversingamplifier,thepres-sureregulator(9,Fig. 2)mustbeturnedclockwise as far as it will go (also see sec-tion 4.1.2).When attaching the positioner to the SAMSONType 3278RotaryActuator(Fig. 8,left),theinsideoftheactuatorandthe unused reverse side of the diaphragm are purged with the positioner's exhaust air. Additional piping is not required.When attaching the positioner to actuators fromothermanufacturers(Fig. 8,right),thereversesideofthediaphragmcanbepurged with air over a pipe connection in-stalledbetweentheactuatorandintermedi-ate piece.
3.3.1 Mountingtheleverwithfeelerroll
1. Placetheleverwithfeelerroll(35)onthesideofthelever(37)oppositetowherethe press nuts are located and secure it usingthesuppliedscrews(38)andwashers.
NOTICETo ensure a close physical contact be-tween the lever with feeler roll and the cam disk, attach the spring contained in the accessories kit (order no. 1400-6660) to the back of the positioner housing (see Fig. 5).
3.3.2 Mountingtheinterme-diatepiece
SAMSONType 3278Actuator1. Fastentheadapter(36)tothefreeshaft
end of the rotary actuator.2. Fastentheintermediatepiece(34)tothe
actuator housing using two screws. Align the intermediate piece so that the air con-nections of the positioner point toward the diaphragm case side.
3. Alignthecamdisk(40)andscale(39)asdescribedinsection3.3.3andfasten.
ActuatorsaccordingtoVDI/VDE3845(09/2010)(fixinglevel2)1. Placetheassembledintermediatepiece
(34,44,45and42)ontothemountingbracketincludedinthescopeofactuatordelivery and fasten.
2. Alignthecamdisk(40)andscale(39)asdescribedinsection2.3.3andfasten.
EB8355-2EN 27
Mountingoncontrolvalves
33
3835
39
39
40
34
36
40
34
44
45
42
43
37
AttachmentaccordingtoVDI/VDE 3845
(09/2010)
AttachmenttoSAMSONType3278
33 Positioner34 Intermediate piece35 Lever with feeler roll36 Adapter37 Transmission lever38 Screws39 Scale40 Cam disk41 Actuator shaft42 Washer43 Mountingbracket44 Coupling
Ventplugorfiltercheck valve
Fig. 8: Attachment to rotary actuators
28 EB8355-2EN
Mountingoncontrolvalves
3.3.3 Basicsettingofthecamdisk
Thevalvemodeluseddeterminesthebasicsetting of the cam disk.
NOTICECam disks tailored to the special characteristic of a valve cause the valve to open in a non-linear or non-equal percentage way.The visible difference between the set point (4 to 20 mA) and the actual position (opening angle) does not constitute a system deviation of the positioner.
Fig. 9andFig. 10showlinearcamdisks.Fig. 9illustratesacontrolvalveassemblywitharotaryactuatorwithspring-returnmechanism that opens counterclockwise. The arrangement of the springs in the actuator determinesthefail-safepositionofthevalve.Fig. 10showshowtoadjustthecamdiskwhenadouble-actingspringlessrotaryactu-ator is used. The direction of rotation (either counterclockwiseorclockwise)dependsonthe actuator and valve model used. The cam diskmustbesetwhenthevalveisclosed.Usetheturnboard(7)toadjusttheoperatingdirection of the positioner, i.e. whether the valve opens or closes when the reference variableincreases(direct>>orreverse<>).
Each cam disk carries two cam sections whosestartingpointsareindicatedbysmallholes. Depending on the operating direction oftherotaryactuator(air-to-openorair-to-close),thestartingpointofthecam,eithermarked N(standardcharacteristic)orI (re-versecharacteristic),mustpointtowardsthelever with feeler roll. When the starting point islocatedonthebackofthecamdisk,turnover the cam disk.
NOTICEThe starting point (hole) of the select-ed cam must be aligned so that the fulcrum of the cam disk and 0° posi-tion on the scale as well as the arrow on the window are in line with each other.
When aligning the cam disk, clip the dou-ble-sidedscalediskonthecamdisk,whilemaking sure that the value on the scale matches the valve's direction of rotation.
NOTICEMake sure the 0° position of the scale always corresponds to CLOSED posi-tion.Therefore, for fail-open actuators and for springless actuators, the maxi-mum supply pressure needs to be ap-plied to the actuator before aligning the cam disk.
EB8355-2EN 29
Mountingoncontrolvalves
Single-actingrotaryactuatorwithspring-returnmechanismLinearcamdisk(equalpercentagecamdiskisrepresentedbyabrokenanddottedline)ControlvalveopenscounterclockwiseForvalvesthatopenclockwise,thecamdiskmustbeturnedoversothatleverwithfeelerrollmovesoverthesamedisksegmentsasshownintheimagesbelow,butwiththecamdiskturningclockwise.
Fail-safeposition:Fail-closevalve
Directoperatingdirection>> Reverseoperatingdirection<>Reference variable
Signal pressure Valve Characteristic Reference
variableSignal
pressure Valve Characteristic
increases increases opens N decreases increases opens I
90˚60˚
30˚ 0˚
90˚60˚
30˚ 0˚
Feeler rollStarting point N
Starting point I
Hole to secure the cam disk
Insertclipandpresstheflapsoutwards
Fail-safeposition:Fail-openvalve
Directoperatingdirection>> Reverseoperatingdirection<>Reference variable
Signal pressure Valve Characteristic Reference
variableSignal
pressure Valve Characteristic
decreases decreases opens I increases decreases opens N
90˚60˚
30˚ 0˚
90˚60˚
30˚ 0˚
Feeler roll
Starting point NStarting point I
Alignment at max. signal pressure
Fig. 9: Cam disk settings for single-acting actuators
30 EB8355-2EN
Mountingoncontrolvalves
Double-acting,springlessrotaryactuatorwithreversingamplifierLinearcamdisk(equalpercentagecamdiskisrepresentedbyabrokenanddottedline)
View from the positioner onto the actuator shaftControlvalveopenscounterclockwise–Basedonaclosedvalve
Directoperatingdirection>> Reverseoperatingdirection<>Reference variable Signal pressure Valve Charac-
teristic
increases A1 increases, A2 decreases opens N
Reference variable Signal pressure Valve Charac-
teristic
decreases A1 increases, A2 decreases opens I
90˚60˚
30˚ 0˚
90˚60˚
30˚ 0˚
Feeler rollStarting point N
Starting point I
Hole to secure the cam disk
Insertclipandpresstheflapsoutwards
View from the positioner onto the actuator shaftControlvalveopenscounterclockwise – Based on a closed valve
Directoperatingdirection>> Reverseoperatingdirection<>Reference variable Signal pressure Valve Charac-
teristic
increases A1 increases, A2 decreases opens N
Reference variable Signal pressure Valve Charac-
teristic
decreases A1 increases, A2 decreases opens I
0˚
90˚
60˚
30˚0˚
90˚
60˚
30˚
Feeler rollStarting point N
Starting point I
Fig. 10:Cam disk settings for double-acting actuators
EB8355-2EN 31
Mountingoncontrolvalves
SecuringthealignedcamdiskTo prevent the cam disk from turning, drill a holeintotheadapter(36)orcoupling(44)toallowa2 mmdowelpintobeinserted.Select one of the four holes located around the center hole of the cam disk to secure the cam disk in position.
32 EB8355-2EN
Mountingoncontrolvalves
3.3.4 Reversingamplifierfordouble-actingactuators
Fortheusewithdouble-actingactuators,thepositionermustbefittedwithareversingam-plifier,e.g.theSAMSONType 3710Revers-ingAmplifier(seeMountingandOperatingInstructions uEB 8392).The signal pressure of the positioner is sup-plied at the output A1 of the reversing ampli-fier.Anopposingpressure,whichequalstherequired supply pressure Z when added to the pressure at A1, is applied at output A2. The rule A1 + A2 = Z applies.Ifadifferentreversingamplifier(itemno.1079-1118or1079-1119)isused,followthemountinginstructionsdescribedbelow:
Mounting
NOTICEWhen using a reversing amplifier, the pressure regulator (9) must be turned as far as it will go in the clockwise di-rection.Remove the sealing plug (1.5) before mounting the reversing amplifier. The rubber seal (1.4) must remain in-stalled.
1. Screwthespecialnuts(1.3)fromtheac-cessoriesofthereversingamplifierintothe threaded connections of the position-er.
2. Insertthegasket(1.2)intotherecessofthereversingamplifierandslideboththehollowedspecialscrews(1.1)intotheconnectingboreholesA1 and Z.
3. Placethereversingamplifierontothepo-sitioner and screw tight using the two specialscrews(1.1).
4. Useascrewdriver(8mmwide)toscrewtheenclosedfilters(1.6)intotheconnec-tionboreholesA1 and Z.
SignalpressureconnectionsA1: Connect output A1 to the signal pressure connection on the actuator that causes the valve to open when the pressure rises.A2: Connect output A2 to the signal pressure connection on the actuator that causes the valve to close when the pressure rises.
PressuregaugeattachmentThemountingsequenceshowninFig. 11re-mains unchanged. Screw a pressure gauge bracketontotheconnectionsA1 and Z.Pressuregaugebracket: − G ¼1400-7106 − ¼NPT1400-7107
Pressure gauges for supply air Z and output A1aslistedinTable 4andTable 5.
EB8355-2EN 33
Mountingoncontrolvalves
1.3 1.2 1.1 1
Out
put 3
8Su
pply
9
A1
1.5 1.6
Z
A2
1.4A1 A2
Output 38 Supply 9
1.3 1.21.1
1.6
Z
A1
From the positioner
Control signals to the actuator
1 Reversingamplifier1.1 Special screws1.2 Gasket1.3 Special nuts1.4 Rubberseal1.5 Sealing plug1.6 Filter
Fig. 11:Mounting a reversing amplifier
34 EB8355-2EN
Connections
4 Connections
4.1 PneumaticconnectionsThe pneumatic connections are optionally designedasaborewith¼NPTorG¼thread.Customaryfittingsformetalorcop-pertubingorplastichosescanbeused.
NOTICEThe supply air must be dry and free from oil and dust. The maintenance instructions for upstream pressure reducing stations must be observed.Blow through all air pipes and hoses thoroughly before connecting them.
If the positioner is attached directly to the Type 3277Actuator,theconnectionofthepositioner's output pressure to the actuator is fixed.ForattachmentaccordingtoIEC 60534-6(NAMUR),thesignalpressurecanberoutedtoeitherthetoporbottomdiaphragmchamberoftheactuator,dependingontheactuator'sfail-safeaction"actuator stem extends" or "actuator stem retracts".
ExhaustairModelswithindex3767-x...x.03 and higher are equipped with a hinged cover without its own exhaust air hole. The exhaust air con-nections for these models are included in the accessories.The vent plug is located on the plastic cover of the actuator for direct attachment, where-as for NAMUR attachment, it is located on the adapter housing. The vent plug is located
on the intermediate piece or reversing ampli-fierforattachmenttorotaryactuators.
NOTICEIf you intend to replace older models with index 3767-x...x.02 or lower, the mounting parts may need to be replaced as well.
4.1.1 PressuregaugesTo precisely tune the positioner, we recom-mend installing pressure gauges for the sup-ply air and signal pressure.The required parts are listed as accessories inTable 4,Table 5andTable 7.
4.1.2 SupplypressureThe required supply air pressure depends on thebenchrangeandtheactuator'soperat-ingdirection(fail-safeaction).Thebenchrangeiswrittenonthenameplateeither as the spring range or signal pressure range. The operating direction is marked FAor FE,orbyasymbol.Actuatorstemextends(FA):Fail-close(forglobeandanglevalves)Required supply pressure = Upperbenchrangevalue+0.2 bar, atleast1.4 bar.
EB8355-2EN 35
Connections
Actuatorstemretracts(FE):Fail-open(forglobeandanglevalves)Fortight-closingvalves,themaximumsignalpressure pstmax is roughly estimated as fol-lows:
pstmax = F + d²·π·∆p [bar]4 · A
d = Seatdiameter[cm]∆p = Differential pressure across the
valve[bar]A = Actuatorarea[cm²]F = Upperbenchrangevalueofthe
actuator[bar]
Iftherearenospecifications,calculateasfollows:Required supply pressure =Upperbenchrangevalue+1 bar
PressureregulatorAftertiltingthecoverplateback,thepres-sureregulator(9)canbecontinuouslyad-justed. When the adjuster is turned counter-clockwise as far as it will go, signal pres-suresforspringrangesupto2.5 bararecontrolled. When the adjuster is turned clockwise all the way, signal pressures for springrangesupto6.0 bararecontrolled.If the signal pressure must not exceed a cer-tainvalue,thislimitcanbeadjustedusingapressuregauge(accessories).
36 EB8355-2EN
Connections
4.2 Electricalconnections
DANGER!For electrical installation, observe the relevant electrotechnical regulations and the accident prevention regula-tions that apply in the country of use. In Germany, these are the VDE regu-lations and the accident prevention regulations of the employers’ liability insurance.The following regulations apply to in-stallation in hazardous areas: EN 60079-14: 2008 (VDE 0165, Part 1) Explosive Atmospheres – Elec-trical Installations Design, Selection and Erection.Adhere to the terminal assignment. Switching the assignment of the elec-trical terminals may cause the explo-sion protection to become ineffective. Do not loosen enameled screws in or on the housing. The maximum per-missible values specified in the EC-type examination certificates apply when interconnecting intrinsically safe electrical equipment (Ui or U0, li or I0, Pi or P0, Ci or C0 and Li or L0).
SelectingcablesandwiresObserveclause 12of EN 60079-14:2008 (VDE 0165,Part 1)forinstallationofthein-trinsically safe circuits.Clause 12.2.2.7applieswhenrunningmulti-corecablesandwireswithmorethanoneintrinsically safe circuit.
The radial thickness of the insulation of a conductor for common insulating materials (e.g.polyethylene)mustnotbesmallerthan0.2 mm.The diameter of an individual wire in a fine-strandedconductormustnotbesmallerthan0.1 mm.Protecttheconductorendsagainstsplicing,e.g.byusingwire-endfer-rules.Whentwoseparatecablesareusedforcon-nection,anadditionalcableglandcanbeinstalled.Sealcableentriesleftunusedwithplugs.Fitequipmentusedinambienttemperaturesbelow–20 °Cwithmetalcableentries.
Zone2/Zone22In equipment operated according to type of protectionEx nAII(non-sparkingequipment)accordingtoEN 60079-15:2003,circuitsmaybeconnected,interruptedorswitchedwhile energized only during installation, maintenance or repair.Equipmentconnectedtoenergy-limitedcir-cuitswithtypeofprotectionEx nLaccordingtoEN 60079-15:2003maybeswitchedun-der normal operating conditions.Themaximumpermissiblevaluesspecifiedinthestatementofconformityanditsad-dendaapplywheninterconnectingtheequipmentwithenergy-limitedcircuitsintypeofprotectionEx nL IIC.
EB8355-2EN 37
Connections
Thewiresforthereferencevariablemustbeconnected to the terminals 11 and 12 locat-ed in the housing.In general, it is not necessary to connect the positionertoabondingconductor.Shouldthisberequired,however,thisconductorcanbeconnectedinsidethedeviceoroutsideonthe device.Depending on the version, the positioner is equipped with inductive limit contacts and/or a solenoid valve.Versions with position transmitter do not per-mit the connection of additional equipment.The position transmitter is operated on a two-wirecircuit.Theusualsupplyvoltageis24 V DC.Taking the resistance of the supply leads into account, the voltage at the position transmit-terterminalscanbebetween12and45 V DC.RefertoFig. 12ortothelabelonthetermi-nalblock.
Accessories:Deviceindex3767-x...x.03 and lowerCableglandPG13.5Black plastic Orderno.1400-6781Blue plastic Orderno.1400-6782Nickel-platedbrass Orderno.1400-6979AdapterPG13.5to½NPT:Metal to metal Orderno.1400-7109Paintedblue Orderno.1400-7110Deviceindex3767-x...x.04 and higherCableglandM20 x 1.5Black plastic Orderno.1400-6985Blue plastic Orderno.1400-6986Nickel-platedbrass Orderno.1890-4875AdapterM20 x 1.5to½ NPT:Powder-coatedaluminum
Orderno.0310-2149
4.2.1 SwitchingamplifierThe operation of the inductive limit contacts requiresswitchingamplifiersinaccordancewithEN 60947-5-6tobeconnectedintheoutputcircuit.Observetherelevantregula-tions for installation in hazardous areas.
+41 –42 +51 –52 +81 –82 +31 –32
GEi
+ –
+ –
(B)A
(A)B
A
+11 –12 +11 –12
Ei/Ei/ AA
mA control signal
mA control signal6to24 V DC
solenoid valveTransmitter supply voltage
for position transmitter only
Rear Version with position transmitter
Switchingamplifieracc.toEN 60947-5-6
Fig. 12:Electrical connections
38 EB8355-2EN
Operation
5 Operation
5.1 Tuningthepositionermountedontothecontrolvalve
StartingpointandreferencevariableWhen adjusting the positioner directly at the controlvalve,thetravel(openingangle)mustbeadaptedtothereferencevariable.Withareferencevariable,forexample,4to20 mA,thevalvemustmovethroughitsen-tiretravelrangefrom0to100 %(Fig. 13,left).For positioners for rotary actuator, an open-ingangle,forexample,0to70°mustbeas-signedtothereferencevariable.ThestartingpointisbasedontheCLOSEDposition of the valve.Depending on the actuator version ("actua-torstemextends"or"actuatorstemretracts")and the operating direction of the positioner (>>or<>),thisstartingpointcanbeeitherthelowerorupperrangevalue(4or20 mA)ofthereferencevariable.Thereferencevariablerangeandthustheupper range value determine the travel of the valve.Insplit-rangeoperation(Fig. 13,right),thecontrol valves work with smaller reference variableranges.Thecontrolleroutputsignalis used to control two control valves, dividing it such that the valves move through their en-tire travel range at half the input signal rangeeach(e.g.firstvalvesetto4to
12 mA,secondvalvesetto12to20 mA).Toavoidoverlapping,allowforadeadbandof±0.5 mAasshowninFig. 13.The startingpoint(zero)isadjustedatthezero adjuster (6.2); the span, i.e. the upper range value, is adjusted at the span adjuster (6.1).Duringtheadjustment,connectasuitableammeter to the signal input and apply air to the supply air input.
NOTICEWhen the positioner is controlled by a computer whose signal is limited, e.g. between 4 to 20 mA, set the po-sitioner to the range from 4.5 to 20 mA.This is the only way to ensure that the actuator is completely vented and the valve completely closed when the controller issues a 4 mA signal.For operating direction <>, set the range to 4 to 19.5 mA.
EB8355-2EN 39
Operation
100%
0%4 20 mA124 20 mA
100%
0%
< > < < < > < <
Referencevariable Input signal
Deadband
OpenOpen
TravelTravel
ClosedClosed Valve 2 Valve 1
Fig. 13:Normal or split-range operation
5.1.1 AdjustingtheproportionalbandXpandairdeliveryQ
1. Closethevolumerestriction(11)asfaras the required positioning speed permits.Checkthepositioningspeedbypushingthediaphragmlever(3)asfaritwillgo.
2. Adjustthereferencevariableattheinputtoapprox.50 %ofitsrange.
3. Turnthezeroadjuster(6.2)untilthevalvehasreachedapprox.mid-travel.
4. Usetheadjuster(8)tosettheproportion-albandXp to a value half way (half turn).
5. Check the valve's tendency to hunt and thepositioningspeedbybrieflytappingthediaphragmlever(3).TheXpvalueistobeadjustedtobeassmallaspossible,withoutconsiderableovershooting occurring.
NOTICEAlways adjust the Xp restriction be-fore setting the starting point.Changing it later will cause the zero point to be shifted.
40 EB8355-2EN
Operation
5.1.2 Settingsforactuatorwith“actuatorstemex-tends”fail-safeaction
Startingpoint(e.g.4 mA)1. Set the input signal at the ammeter to
4.5 mA2. Turnthezeroadjuster(6.2)untilthe
valve just starts to move from its initial position.
3. Reducetheinputsignalto0 mAandslowly increase it again. Check whether the valve starts to move at exactly 4.5 mA.Correctanydeviationatthezeroadjuster(6.2).
Upperrangevalue(span)e.g.20mA1. Oncethestartingpointhasbeenset,
increasetheinputsignalto20 mAattheammeter.
Atexactly20 mA,theplugstemmuststandstill,havingmovedthrough100 %travel(watchthetravelindicatoratthevalve).If the upper range value is incorrect, turn the spanadjuster(travel).Fourturnscorrespondtoatravelchangeof10 %instandardoper-ation.Insplit-rangeoperation,thisvalueisreducedbyhalf.Turn the adjuster clockwise to reduce the travel and counterclockwise to increase it.2. Afterthecorrectionhasbeencompleted,
reduce the input signal and slowly increase it again.Check the starting point and the upper range value. Repeat the correction pro-cedureuntilbothvaluesarecorrect.
NOTICEWhen setting the zero adjuster (6.2), check whether the actuator is relieved of pressure.When the input signal is 4 mA and the operating direction >>, or the in-put signal is 20 mA and the operat-ing direction <>, the pressure gauge must indicate 0 bar.Correct zero accordingly.
5.1.3Settingsforactuatorwith“actuatorstemretracts”fail-safeactionNOTICEWhen using an actuator with fail-safe action "actuator stem retracts", the diaphragm chamber must be pressurized with a signal pressure that is high enough to tightly close the valve against the upstream pres-sure in the plant. This applies to an upper range value of the reference variable (20 mA) with operating di-rection >> as well as a lower range value of the reference variable (4 mA) with operating direction <>.
The requiredsignalpressure is either indi-catedonthepositionerlabelortherequiredsupplypressurecanberoughlycalculatedasdescribedinsection4.1.2.
Startingpoint(e.g.20 mA)1. Set the input signal at the ammeter to
20 mA
EB8355-2EN 41
Operation
2. Turnthezeroadjuster(6.2)untilthevalve just starts to move from its initial position.
3. Increase the input signal and slowly re-duceitagainto20 mA.Checkwhetherthe valve starts to move at exactly 20 mA.
4. Correct any deviation at the zero adjust-er(6.2).Turningtheadjustercounter-clockwise causes the valve to move from itsendpositionearlier;turningclockwisecauses the valve to move from its end po-sition later.
Upperrangevalue(span)e.g.4mA1. Oncethestartingpointhasbeenset,in-
creasetheinputsignalto4 mAattheammeter.Atexactly4 mA,theplugstemmust stand still, having moved through 100 %travel(watchthetravelindicatoratthevalve).
2. If the upper range value is incorrect, turn thespanadjuster(travel).Fourturnscor-respondtoatravelchangeof10 %instandardoperation.Insplit-rangeopera-tion,thisvalueisreducedbyhalf.Turn the adjuster clockwise to reduce the travel and counterclockwise to increase it.
3. Afterthecorrectionhasbeencompleted,settheinputsignalto20 mAagain.
4. Turnthezeroadjuster(6.2)againuntilthe pressure gauge indicates the re-quiredsignalpressure (see section 4.1.2).
NOTICEAfter mounting and tuning the posi-tioner, make sure that the vent plug of the housing cover faces downward when the valve is installed.
5.2 Changingtheoperatingdi-rection
If the operating direction of directly attached positioners(Fig. 3)istobechangedaftertheyhavebeeninstalled,turntheturnboard(7)andchangethepositionoftheconnec-tionblock,positionerandclamp(1.2).ForattachmentaccordingtoIEC 60534-6(NAMUR),turntheturnboard(7)andthepositionerontheadapterhousing(Fig. 6).In positioners for rotary actuators, reassign thecamdiskasshowninFig. 9andFig. 10.Fordetailsonchangingtheturnboard(7)re-fer to section 3.
42 EB8355-2EN
Operation
5.3AdjustingthelimitcontactsThe positioner version with inductive limit contactshastwoadjustabletagsmountedona rotary shaft which operate the associated proximityswitches(50).The operation of the inductive limit contact requiresswitchingamplifierstobeconnectedintheoutputcircuit.Refertosection 4.2.1.Whenthetag(51)islocatedintheinductivefieldoftheswitch,theswitchassumesahighresistance.Whenitmovesoutsidethefield,the switch assumes a low resistance.The limit contacts are usually adjusted to is-sueasignalforbothendpositions.Theswitchingpointscanalsobeadjustedtoin-dicate intermediate positions.TheswitchesAandBmustbeassignedtothe end positions of the control valve (valve OPENorCLOSED)dependingontheoper-ating direction and the mounting position ac-cordingtoTable 8andTable 9.
Theterminals41/42and51/52canoption-allybeassignedtotheswitchesAandBbyturningtheassociatedlabelontheterminalblock(alsoseeFig. 12).
NOTICEThe tags of the limit contacts cannot be turned by 360°. As a result, it is important to observe the correct as-signment of switches A and B to the valve positions (valve CLOSED and valve OPEN), especially when the limit contacts are to be connected in safety circuits.
The required switching function, i.e. whether theoutputrelayistobepickeduporre-leasedwhenthetagentersthefield,mustbedeterminedattheswitchingamplifier.
Fig. 14:Limit contacts
EB8355-2EN 43
Operation
AdjustingtheswitchingpointMove the valve to the switching point and adjustthetagbyturningtheadjustmentscrew(53)sothattheswitchingpointisreachedandindicatedbytheLEDontheswitchingamplifier.Toguaranteetheswitchingunderallambientconditions, adjust the switching point ap-prox.2 %beforethemechanicalstop(OPEN/CLOSED).
NOTICEAfter tuning the positioner, make sure that the vent plug of the housing cov-er faces downward when the valve is installed.
Table 8: Direct attachment to Type 3277 Actuator (Fig. 3)
Left attachment Right attachment
Switch
Valve position Tag outside inductive field
Tag inside inductive field
Tag outside inductive field
Tag inside inductive field
Closed B A A B
Open A B B A
Table 9: Right or left attachment according to NAMUR (Fig. 6) and attachment to rotary actuators (Fig. 8)
Directionofaction
Valveposition
Actuatorstemextends(FA) Actuatorstemretracts(FE)
SwitchTag
SwitchTag
Outside inductive field Insideinductivefield Outside inductive
fieldInsideinductivefield
>> CLOSED OPEN
B A
A B
A B
B A
<> CLOSED OPEN
A B
B A
B A
A B
44 EB8355-2EN
Operation
5.4 Adjustingthepositiontransmitter
NOTICEThe starting point (zero) and upper range value (span) must be set before adjusting the position transmitter.
Dependingonthepositionofthemulti-pinconnector(symbolonconnector:>>or<>),thefeedbacksignalcanbesettoeitherarangeof4to20 mAor20to4 mAfor0to100 %travel.
Fig. 15:Position transmitter
ZeropointUse the switches 1 and 2 to roughly set the zero point and the ZERO potentiometer for fine-tuning.Theadjustedvalueisalwaysbasedona4 mAsignal.
SpanUse the switches 3 and 4 to roughly set the span, i.e. the upper range value, and the SPANpotentiometerforfine-tuning.Thead-justedvalueisalwaysbasedona20 mAsignal.
Example:Move the valve to the open position while observingthepositiontransmittersignal.If the signal does not move in the desired di-rection,changethepositionofthemulti-pinconnector.Adjustthezeropoint(4 mA)andspan(20 mA)forthevalvepositionsaccordingtoTable 10.
Table 10: Position transmitter
Valve movement Observedfeedbacksignal Direction of signal Set zero/span to
OPEN á
CLOSED
Signal increases á
OK 20 mA ValveOPEN4 mA ValveCLOSED
NotOK à Change connector's
position
4 mA ValveOPEN20 mA ValveCLOSED
Signal drops â
OK 4 mA ValveOPEN20 mA ValveCLOSED
NotOK à Change connector's
position
20 mA ValveOPEN4 mA ValveCLOSED
EB8355-2EN 45
Operation
Zeropointadjustment1. Use the input signal of the positioner to
move the valve to closed position (valve CLOSED,travel0 %).
2. The ammeter must now indicate approx. 4 mA.
3. Correct smaller deviations at the ZERO potentiometer until the meter shows ex-actly4 mA.Forlargerdeviationsthatcannotbecor-rected using the potentiometer (adjust-mentrangeofapprox.20turns),settheswitches 1 and 2 to indicate an mA val-ue which is within the adjustment range of the ZERO potentiometer.
4. Setthezeropointtoexactly4 mAusingthe ZERO potentiometer.
Adjustingthespan1. Use the input signal of the positioner to
move the valve to closed position (valve CLOSED,travel100 %).
2. The ammeter must now indicate approx. 20 mA.
3. Correct smaller deviations at the SPAN potentiometer until the meter shows ex-actly20 mA.Ifdeviationsaretoohigh,set the switches 3 and 4 to indicate an mA signal which is within the adjustment range of the SPAN potentiometer.
4. Turn the SPAN potentiometer until the ammetershowsexactly20 mA.Since the zero point and span have a mutualinfluenceoneachother,repeatthecorrectionprocedureatbothpotenti-ometersuntilbothvaluesarecorrect.
46 EB8355-2EN
Operation
Note:The following applies to positioners with adapter housing for NAMUR attachment:When the positioner and the position transmitter signal have different operating di-rections (<< and <>), it may be impossible to adjust the zero point of the transmitter signal due to the additional deflection caused by the bracket (28) of the adapter housing.In this case, readjust the black pointer (section 3.2.2 on page 16) so that the sensor of the position transmitter reaches the control range.Unscrew the clamp. For “actuator stem extends” (FA), shift the pointer upward to-wards the actuator; for "actuator stem retracts" (FE), shift the pointer downward to-wards the valve. For valves with rod-type yoke, slightly shift the positioner on the rod in the downward (FE) or upward (FA) direction.
NOTICEEvery time you make a change as described above, the zero point and span of the po-sitioner must be readjusted before adjusting the position transmitter.After tuning the positioner, make sure that the vent plug of the housing cover faces downward when the valve is installed.
EB8355-2EN 47
Convertingandretrofittingthepositioner
6 Convertingandretrofittingthepositioner
NOTICERead instructions in section 7 for ex-plosion-protected versions!
6.1 Convertingfromelectro-pneumatictopneumatic
Theelectropneumaticpositionercanbecon-vertedintoaType 3766PneumaticPosition-er with the following conversion kit:Required conversion kit:M20x1.5,orderno.:1400-75751. Remove the holder with the terminal
block.Disconnectthecabletothei/pmodule.
2. Unscrew the fastening screws and re-movethei/pmodule(6)includingtheseals(7,8).
3. Placetheconnectingplate(3)withthesealonthehousingboresandscrewtight.Therestrictionmustbeseatedinthesealabovetherightinnerbore.
4. Replacethecablegland(5)withthepneumaticscrewfitting(1).
5. Connectthesiliconehose(2)andinserttheguardplate(4)intothehousing.
6. Remounttheholderwithterminalblock.7. Change type designation (model num-
ber)onthenameplatetoType 3766Pneumatic Positioner.
Note:For details on Type 3766 Positioners, refer to Mounting and Operating In-structions u EB 8355-1.
1 2 3 4
5 6 7 8
Fig. 16:Converting the positioner
48 EB8355-2EN
Convertingandretrofittingthepositioner
6.2 Installingthelimitcontacts
Accessories: Limit switch retrofit kit depend-ing on model index 3767-xxxxxxxxxx.04Order no. 1400-8810 for index .06 or higherOrder no. 1400-7573 for index .04/.05Order no. 1400-6389 for index .03
1. Unscrewthebracketwithplate(1).2. Removethescrews (2)andreplacethe
entiresetpointcalibrator (3)withacali-bratorincludinglimitcontacts.MakesuretheO-ringisinsertedintothehousing.
3. Attachtheterminalblockforthelimitsig-nals41/42and51/52intheterminalbase.
4. Guidetheconnectingcabletothetermi-nals and fasten.(brown=+,blue=–)
5. Refastenthebracketwithplate(1)andsticktheadhesivelabelforthelimitswitches on the housing cover.
6. Screwadditionalcableglandontothehousing.
6.3 Installingasolenoidvalve
Accessories: Solenoid valve retrofit kitOrder no. 1400-7712 for index .05 or lowerOrder no. 1400-8808 for index .06
1. Pushtheplate(5)tooneside.2. Unscrewthefourscrews(7).Liftoffthe
blackcoverwiththerubbergasketandinsertthesolenoidvalve(6).Therubbergasket with the restriction is located in the rear of the solenoid valve.
3. Unscrewtheplate(1).
1 2 23
4
5
6789
10
Fig. 17:Installing the limit switches and solenoid valve
EB8355-2EN 49
Servicingexplosion-protecteddevices
4. Attachtheterminalblock(10)fortheso-lenoidvalveintheterminalbase.
5. Insertthepanel (9)attherearofthepo-sitioner and attach it to the set point cali-bratorusingtwoscrews.
6. Guidetheconnectingcabledownbehindthe mounted panel of the set point cali-bratorandupagaintoterminals81/82and fasten.(brown=+,blue=–)
7. Screwonthebracketwithplate(1).8. Screwadditionalcableglandontothe
housing.
6.4 Removingthesolenoidvalve
Accessories: Retrofit kit containing cover for solenoid valve opening: order no. 1400-6949
1. Unscrewbracketwithplate(1).Removetheconnectingcableofthesolenoidvalve from terminals 81/82.
2. Unscrewthetwoscrews(7)thatarenotsealed with paint and remove the sole-noidvalvewithitsconnectingcable.
3. Placetherubbergasketonthespigotofthe cover and screw it into the housing.
4. Screwonthebracketwithplate(1).
7 Servicingexplosion-protecteddevices
If a part of the device on which the explosion protectionisbasedneedstobeserviced,thedevicemustnotbeputbackintooperationuntilaqualifiedinspectorhasassesseditac-cording to explosion protection require-ments,hasissuedaninspectioncertificateorgiven the device a mark of conformity.Inspectionbyaqualifiedinspectorisnotre-quired if the manufacturer performs a rou-tinetestonthedevicebeforeputtingitbackinto operation. Document the passing of the routinetestbyattachingamarkofconformi-ty to the device.Inspectionbyaqualifiedinspectorisnotre-quired if the manufacturer performs a rou-tinetestonthedevicebeforeputtingitbackinto operation. Document the passing of the routinetestbyattachingamarkofconformi-tytothedevice.Replaceexplosion-protectedcomponentsonlywithoriginal,routine-testedcomponentsbythemanufacturer.Devicesthathavealreadybeenusedout-sidehazardousareasandareintendedforfutureuseinsidehazardousareasmustcomplywiththesafetyrequirementsplacedonserviceddevices.Beforebeingoperatedinsidehazardousareas,testthedevicesac-cordingtothespecificationsforservicingexplosion-protecteddevices.ObserveEN 60079-17duringservicing.
50 EB8355-2EN
Dimensionsinmm
8 Dimensionsinmm
44
19.5
3539
164
4676 50
36N
1=11
3 N
2=20
0
5856
68
28
1429
150
16419.5
37
6818
5
76
Ø110
82
5666
50
M20 x 1.5
28.5
28.5
Output 1 (A1)
Output 2 (A2) Supply (Z)
50
Output (38)
Supply (9)
Pneumatic connectionsG ¼or¼ NPT
Reversingamplifier(optional)
Attachment with intermediate piece for rotary actuators
AttachmentIEC 60534-6(NAMUR)withadapterhousing
Fulcrum of actuator shaft
Pneumatic connection reversingamplifier
52 EB8355-2EN
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EB8355-2EN 55
56 EB8355-2EN
EB8355-2EN 57
58 EB8355-2EN
EB8355-2EN 59
60 EB8355-2EN
EB8355-2EN 61
62 EB8355-2EN
EB8355-2EN 63
64 EB8355-2EN
EB8355-2EN 65
66 EB8355-2EN
EB8355-2EN 67
SAMSON AG · MESS- UND REGELTECHNIKWeismüllerstraße 3 · 60314 Frankfurt am Main, GermanyPhone: +49 69 4009-0 · Fax: +49 69 [email protected] · www.samson.de EB 8355-2 EN 20
17-06-29·English