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T 8384-3 ENType 3730-3 Electropneumatic Positionerwith HART communication · Series 3730AnwendungSingle-acting or double-acting positioner for attachment to pneumatic control valves. Self-calibrating, automatic adaptation to valve and actuator.Set pointValve travelOpening angle4 to 20 mA3.6 to 300 mm24 to 100 The positioner ensures a predetermined assignment of the valve position (controlled variable x) to the input signal (set pointw). It compares the input signal received from a control systemto the travel or rotational angle of the control valve and issuesa corresponding output signal pressure (output variable y).Fig. 1: Type 3730, direct attachment to Type 3277Pneumatic Actuator(new design)Special features Simple attachment to all common linear and rotary actuators– SAMSON direct attachment (Fig. 1)– NAMUR rib (Fig. 2)– Attachment to rod-type yokes acc. to IEC 60534-6-1– Attachment according to VDI/VDE 3847– Rotary actuator attachment according to VDI/VDE 3845 (Fig. 3)Fig. 2: Type 3730, attachmentto NAMUR rib Any desired mounting position of the positioner (but notsuspended) Simple single-knob, menu-driven operation LCD easy to read in any mounted position due to selectable reading direction Configurable with a PC over the SSP interface using theTROVIS-VIEW software Variable, automatic start-up with four different initialization modesFig. 3: Type 3730, attachmentaccording to VDI/VDE 3845 Preset parameters - only values deviating from the standard need to be adjusted Calibrated travel sensor without gears susceptible to wear Sub initialization mode (substitution) allows the positionerto be started up in case of emergency whilst the plant isrunning without the valve moving through the whole travelrange. Permanent storage of all parameters in EEPROM (protected against power failure) Two-wire system with a small electrical load of 410 Ω Adjustable output pressure limitationFig. 4: Type 3730 · External position sensor with Type 3510Micro-flow ValveSAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, GermanyPhone: 49 69 4009-0 · Fax: 49 69 4009-1507 · [email protected] · www.samsongroup.comEdition April 2021

angle of the control valve and issues a signal pressure (outputvariable y) for the pneumatic actuator.The positioner mainly consists of an electric travel sensor system (2), an analog i/p module with a downstream air capacity booster and the electronics with the microcontroller (5).When a set point deviation occurs, the actuator is either vented or filled with air. If necessary, the signal pressure changecan be slowed down with a volume restriction that can beconnected as necessary. The signal pressure to the actuatorcan be limited by software to 1.4, 2.4 or 3.7 bar.A constant air stream with a fixed set point to the atmosphereis created by flow regulator (9) with a fixed set point. The i/pmodule (6) is supplied with a constant upstream pressure bythe pressure regulator (8) to compensate for any fluctuationsin the supply pressure. Activatable tight-closing function Continuous monitoring of zero point Integrated temperature sensor and operating hours counter Two standard programmable position alarms Self-diagnostics; alarms as condensed state conforming toNAMUR Recommendation NE 107, issued over a faultalarm contact or optional analog position transmitter Integrated EXPERTplus diagnostics for control valves(u T 8389)Versions–Type 3730-3 · Electropneumatic positioner for control valves, on-site operation, local communication with SSP interface, EXPERTplus diagnostics, HART communication–Type 3730-6 · Electropneumatic positioner for control valves, HART communication, on-site operation, local communication with SSP interface, EXPERTplus diagnostics,pressure sensors to monitor the supply air and signal pressure u T 8384-6OperationThe positioner is operated with a user-friendly rotary pushbutton. The parameters are selected by turning the knob, pushingit activates the required setting. In the menu, all parametersare listed in one level, eliminating the need to search in submenus. All parameters can be checked and changed on site.All values are displayed on the LCD. The reading direction ofthe LCD can be rotated by 180 .The closing direction of the control valve is indicated to thepositioner by setting the slide switch "Air to open/Air to close". It assigns the CLOSED position of the control valve to the0 % reading.The INIT key activates initialization which is started accordingto the ready adjusted parameters (autotune). After initialization is completed, the positioner immediately starts closed-loopoperation.To configure the positioner with SAMSON’s TROVIS-VIEWsoftware, the positioner is equipped with an additional digitalinterface to be connected to the RS-232 or USB interface of aPC.All parameters can be accessed using HART communication.Additional options– Inductive limit contact with proximity switches– Analog position transmitter with two-wire transmitter– Forced venting function with solenoid valve– Binary input– External position sensor (Fig. 4)– Analog input x– Stainless steel housing– Leakage sensor to monitor the seat leakagePrinciple of operationThe positioner is mounted on pneumatic control valves and isused to assign the valve position (controlled variable x) to thecontrol signal (set point w). The positioner compares the electric control signal of a control system to the travel or rotational22Serial20Interface161321 FSKmmSwBE4A3%15519A214A114w24V 171819202122Control valveTravel sensorControllerA/D converterMicrocontrolleri/p moduleBoosterPressure regulatorFlow regulatorVolume restrictionInductive limit contact (option)Solenoid valve (option)Position transmitter or binary input (option)Software limit contactsFault alarm outputDisplayActuation of solenoid valveGalvanic isolation (option)D/A converterCommunication interfaceHART connectionBinary input BE (option)Fig. 5: Functional diagram of Type 3730-3 Positioner2T 8384-3 EN

Table 1: Technical data for Type 3730-3 PositionerType 3730-3 PositionerThe technical data for the explosion-protected devices may be restricted by the limits specified in thetest certificates.Valve travelDirect attachment to Type 3277 Actuator3.6 to 30 mmAttachment according to IEC 60534-6 (NAMUR)3.6 to 300 mmAttachment according to VDI/VDE 38473.6 to 300 mmAttachment to rotary actuators (VDI/VDE 3845)24 to 100 opening angleTravel rangeSet point wAdjustableAdjustableAdjustable within the initialized travel/angle of rotation of the valve; travel can be restricted to 1/5 atthe maximum.Signal range4 to 20 mA · Two-wire device, reverse polarity protection Minimum span 4 mAStatic destruction limit100 mAMinimum current3.6 mA for display · 3.8 mA for operationLoad impedanceSupply air 8.2 V (corresponds to 410 Ω at 20 mA)Supply pressure1.4 to 7 bar (20 to 105 psi)Air quality acc. toISO 8573-1Max. particle size and density: Class 4 · Oil content: Class 3 · Pressure dew point: Class 3 or at least 10K below the lowest ambient temperature to be expectedSignal pressure (output)Characteristic0 bar up to the capacity of the supply pressure · Can be limited to 1.4 bar/2.4 bar/3.7 bar 0.2 barby softwareAdjustableLinear/equal percentage/reverse equal percentageUser-defined (over operating software and communication)Butterfly valve, rotary plug valve and segmented ball valve: linear/equal percentageDeviation 1 %Hysteresis 0.3 %Sensitivity 0.1 %Transit timeVenting or filling with air adjustable separately up to 240 s by softwareDirection of actionReversibleAir consumption, steady stateIndependent of supply air approx. 110 ln/hAir output ca- to fill actuator with airpacityto vent actuatorAt Δp 6 bar: 8.5 mn³/h· At Δp 1.4 bar: 3.0 mn³/h·KVmax (20 C) 0.09At Δp 6 bar: 14.0 mn³/h· At Δp 1.4 bar: 4.5 mn³/h·KVmax(20 C) 0.15Permissible ambient temperatureInfluences–20 to 80 C (all versions)–45 to 80 C with metal cable gland–55 to 80 C Special version for low temperatures with metal cable gland (on request)The temperature limits for the explosion-protected devices may be further restricted by the limits specified in the test certificates.Temperature 0.15 %/10 KSupply airNoneEffect of vibration 0.25 % up to 2000 Hz and 4 g according to IEC 770Electromagnetic compatibilityComplying with EN 61000-6-2, EN 61000-6-3, EN 61326-1 and NAMUR Recommendation NE 21Electrical connectionsOne M20x1.5 cable gland for 6 to 12 mm clamping rangeSecond M20x1.5 threaded connection additionally availableScrew terminals for 0.2 to 2.5 mm² wire cross-sectionDegree of protectionIP 66/NEMA 4XUse in safety-instrumented systems(SIL)Emergency venting at 0 mA set pointand using optional solenoid valveObserving the requirements of IEC 61508, the systematic capability of the pilot valve for emergencyventing as a component in safety-instrumented systems is given.Explosion protectionSee Table 3Communication (local)SAMSON SSP interface and serial interface adapterUse is possible on observing the requirements of IEC 61511 and the required hardware fault tolerancein safety-instrumented systems up to SIL 2 (single device/HFT 0) and SIL 3 (redundant configuration/HFT 1).Software requirements (SSP)TROVIS-VIEW with database module 3730-3Communication (HART )HART field communication protocolImpedance in HART frequency range: Receiving 350 to 450 Ω · Sending approx. 115 Ω Software requirements(HART )ComplianceT 8384-3 ENFor handheld communiDevice description for Type 3730-3catorFor PCDTM file according to specification 1.2, suitable for integrating the device into frame applications thatsupport the use of FDT/DTM (e.g. PACTware); other integrations (e.g. AMS, PDM) available·3

Binary contactsFor connection toBinary input of a PLC acc. to IEC 61131-2Pmax 400 mW or for connection to NAMUR switchingamplifier acc. to EN 60947-5-6NAMUR switching amplifier acc. toEN 60947-5-6Two software limit contacts, reverse polarity protection, floating, configurable switching characteristics (default settings in table below)Signal stateVersionNo explosion protectionExNo responseEffectively non-conducting 1.0 mAResponseConductive (R 348 Ω) 2.2 mAVersionNo explosion protectionExNo fault alarmConductive (R 348 Ω) 2.2 mAFault alarmEffectively non-conducting 1.0 mAOne fault alarm contactSignal stateMaterialsHousingDie-cast aluminum EN AC-AlSi12(Fe) (EN AC-44300) acc. to DIN EN 1706 · Chromated and powderpaint coated · Special version: stainless steel 1.4408External partsStainless steel 1.4404/316LCable glandM20 x 1.5, black polyamideWeightDie-cast aluminum housing: approx. 1.0 kgStainless steel housing: approx. 2.2 kgTable 2: Options for Type 3730-3 PositionerSolenoid valve · Approval acc. to IEC 61508/SILInput24 V DC · Galvanically isolated and reverse polarity protection · Static destruction limit 40 VCurrent consumption I U – 5.7 V3840 Ω(corresponding to 4.8 mA at 24 V/114 mW)Signal '0' (no response) 12 V (emergency venting at 0 V)Signal '1' (response) 19 VService life 5 x 106 switching cyclesKV coefficient0.15Analog position transmitterTwo-wire transmitter · Galvanically isolatedAuxiliary power12 to 30 V DC · Reverse polarity protection · Static destruction limit 40 VOutput signal4 to 20 mAOperating directionReversibleOperating range–10 to 114 %CharacteristicLinearHysteresisSame as positionerHigh-frequency influenceSame as positionerOther influencesSame as positionerFault alarmIssued as status current 2.4 0.1 mA or 21.6 0.1 mAPepperl Fuchs inductive limit contactFor connection to switching amplifier according to EN 60947-5-6.Can be used in combination with a software limit contact.SJ2-SN proximity switchMeasuring plate not detected: 3 mA · Measuring plate detected: 1 mAExternal position sensorValve travelSame as positionerCable10 m · Flexible and durable · With M12x1 connector · Flame-retardant acc. to VDE 0472Resistant to oils, lubricants and coolants as well as other aggressive mediaPermissible ambient temperature–40 to 90 C with a fixed connection between positioner and position sensor · The limits in the testcertificate additionally apply for explosion-protected versionsImmunity to vibrationUp to 10 g in the range of 10 to 2000 HzDegree of protectionIP 67Leakage sensor · Suitable for operation in hazardous areasTemperature range–40 to 130 CTightening torque20 5 Nm4T 8384-3 EN

Binary input · Galvanically isolated · Switching behavior configured over software (e.g. TROVIS-VIEW, DTM)Active switching behavior (default setting)ConnectionFor external switch (floating contact) or relay contactElectric dataOpen-circuit voltage when contact is open: max. 10 VPulsed DC current reaching peak value of 100 mA and RMS value of 0.01 mA when contact is closedContactClosed, R 20 Ω ON switching state (default setting)Open, R 400 Ω OFF switching state (default setting)Passive switching behaviorConnectionFor externally applied DC voltage, reverse polarity protectionElectric data3 to 30 V · Static destruction limit 40 V · Current consumption 3.7 mA at 24 VVoltage 6 VON switching state (default setting) 1 VOFF switching state (default setting)Analog input x · Galvanically isolated · Input for externally measured valve positionInput signal4 to 20 mA · Reverse polarity protection · Minimum span 6.4 mAElectric dataLoad impedance at 20 mA: 6.0 V · Impedance at 20 mA: 300 Ω · Overload capacity: 24 V AC/DCTable 3: Explosion protection certificatesTypeCertification1)CCC Ex-31CCoEIECExINMETROKCSNEPSISTCCT 8384-3 ENType of protection/commentsNumberPTB 02 ATEX 2174Date2017-02-14NumberRU C-DE.AA87.B.01278Date2018-11-30Valid 4Valid -23Valid until2021-07-22NumberIECEx PTB 05.0008XDate2016-11-30NumberIEx 13.0161XDate2019-08-28Valid lid d id until2021-04-26II 2 G Ex ia IIC GbII 2 D Ex ia IIIC T80 C Db1Ex ia IIC T6.T4 GbEx ia IIIC T80 C DbEx tb IIIC T80 C DbEx ia IIC T4 T6 Gb, Ex iaD 21 T80Ex ia IIC T6Ex ia IIC T6.T4 GbEx ia IIIC T80 C DbEx ia IIC T* GbEx ia IIIC T80 C Db, or Ex tb IIIC T80 C Db, or Ex nA IIC T6 GcEx tc IIIC T80 C Dc-55 C Tamb 80 CIP66Ex ia IIC T6/T5/T4Ex ia IIC T4 T6 GbEx iaD 21 T80II 2G Ex ia IIC T6 GbII 2D Ex ia IIIC T80 C Db5

3012394Date2011-08-11NumberPTB 02 ATEX 2174Date2017-02-14NumberIECEx PTB 20-09-04Valid id until2021-04-26-33CSAType of protection/commentsFM1)-35IECExCCC Ex3730STCC2)-38IECExCCC ExNEPSISTCC1)2)NumberPTB 03 ATEX 2180 XDate2016-06-30NumberRU C-DE.AA87.B.01278Date2018-11-30Valid until2023-11-29NumberIECEx PTB 20-09-04Valid d id until2021-04-26Ex ia IIC T6;Class I, Zone 0; Class I, Groups A, B, C, D;Class II, Groups E, F, G;Class I, Zone 2; Class I, Div.2, Groups A, B, C, D;Class II, Div.2, Groups E, F, GClass I, Zone 0 AEx ia IIC;Class I, II, III; Div. 1, Groups A, B, C, D, E, F, G;Class I, Div. 2, Groups A, B, C, D; Class II, III. Div. 2, Groups F, GII 2 D Ex tb IIIC T80 C DbEx tb IIIC T80 C DbEx tD A21 IP66 T80 CII 2D Ex tb IIIC T80 C DbII 3G Ex nA II T6 GcII 3D Ex tc IIIC T80 C Db2Ex ic IIC T6.T4 Gc2Ex nA IIC T6.T4 Gc XEx tc IIIC T80 C Dc XEx nA IIC T6 GcEx tc IIIC T80 C DcEx nA IIC T4 T6 GcEx tD A22 IP66 T80 CEx ic IIC T4 T6 GcEx nA IIC T4 T6 GcEx tD A22 IP66 T80 CII 3G Ex nA IIC T6 GcII 3D Ex tc IIIC T80 C DcEC type examination certificateStatement of conformityRefer to Data Sheet u T 8379 for Ex d approvals of Type 3770 Field Barrier6T 8384-3 EN

Mounting the positionerThe Type 3730 Electropneumatic Positioner can be attacheddirectly to the Type 3277 Actuator (175 to 750 cm²) over aconnection block. In actuators with “actuator stem extends”fail-safe action, the signal pressure is routed over an internalhole in the actuator yoke to the actuator. In actuators with “actuator stem retracts” fail-safe action, the signal pressure is routed to the actuator over ready-made external piping.Using the appropriate bracket, the positioner can also be attached according to IEC 60534-6-1 (NAMUR recommendation). The positioner can be mounted on either side of the control valve.A special version of the positioner allows it to be attached according to VDI/VDE 3847. This type of attachment allows thepositioner to be replaced quickly while the process is runningby blocking the air in the actuator. The positioner can be attached directly to the Type 3277 Actuator using an adapter bracket or adapter block. Alternatively, it can be attached to theNAMUR rib of a control valve using an additional NAMURconnection block.A reversing amplifier is necessary for double-acting, springless actuators for the second opposing signal pressure.A pair of universal brackets is used for the attachment toType 3278 Rotary Actuators or other rotary actuators according to VDI/VDE 3845. The rotary motion of the actuator istransferred to the positioner over a coupling wheel with travelindication.210Dimensions in mm80M 20x1.5402858Output (38)Supply (9)861641434Direct attachmentT 8384-3 EN7

Pressure gauge bracketG ¼ or ¼ NPTor connecting plateNAMUR t accordingto VDI/VDE 3847131642462Attachment to SAMSONType 327738Attachment to NAMUR rib28Schild70Externalposition sensor708T 8384-3 EN

Attachment to rotary actuatorsVDI/VDE 3845 (Sept. 2010)Fixing level 1Size AA1 to AA4Output Y1Output Y1Supply (9)7959498052Connecting plateG ¼ or ¼ NPTOutput Y28050Light version58Output Y2Type 3710 ReversingAmplifier (optional)13015090Mounting unitCrNiMo steel bracket164Output Y1Output Y1Supply (9)805256Connecting plateG ¼ or ¼ NPT86Heavy-duty versionOutput Y2 Type 3710801301663086Ø 101ReversingAmplifier(optional)Output Y2LeverLeverxyzS17 mm25 mm33 mmM25 mm50 mm66 mmL70 mm100 mm116 mmXL100 mm200 mm216 mmT 8384-3 ENzyx1610.179

Ordering textType 3730-3. Positioner–Without pneumatic connecting rail(only when directly attached to Type 3277)–With pneumatic connecting rail ISO 228/1-G ¼–With pneumatic connecting rail ¼-18 NPT–Without/with pressure gauge up to max. 6 bar–Attachment to Type 3277 Actuator (175 to 750 cm²)–Attachment according to IEC 60534-6-1 (NAMUR)Valve travel: . mm, if applicable, rod diameter: mm–Attachment according to VDI/VDE 3847Valve travel: . mm, if applicable, rod diameter: mmAttachment to Type 3278 Rotary Actuator (160/320 cm²),mounting unit with CrNiMo steel bracket or heavy-duty attachment––Attachment to rotary actuators acc. to VDI/VDE 3845,mounting unit with CrNiMo steel bracket or heavy-duty attachment–Pneumatic reversing amplifier for double-acting actuatorswith connection acc. to ISO 228/1-G ¼ or ¼-18 NPT–Adapter M20x1.5 to ½ NPT–Metal cable gland–Special version: housing made of CrNiMo steel10T 8384-3 EN

Article codePositionerType 3730-3xxxxxxx000x0x00x0xxWith LCD and autotune, HART communication, 4 to 20 mAtwo software limit contacts, one fault alarm contactExplosion protectionWithout0ATEXII 2 G Ex ia IIC Gb; II 2 D Ex ia IIIC T80 C Db1CSAEx ia IIC T6; Class I, Zone 0; Class I, Groups A, B, C, D;Class II, Groups E, F, G;Class I, Zone 2; Class I, Div.2, Groups A, B, C, D;Class II, Div.2, Groups E, F, G3FMClass I, Zone 0 AEx ia IIC; Class I, II, III; Div. 1, Groups A, B, C, D, E, F,G; Class I, Div. 2, Groups A, B, C, D; Class II, III. Div. 2, Groups F, GATEXII 2 D Ex tb IIIC T80 C Db5ATEXII 3G Ex nA II T6 Gc, II 3D Ex tc IIIC T80 C Db8Option (additional equipment)Inductive limit contactWithout0SJ2-SN (NC contact)1Solenoid valveWithout0With, 24 V DC4Position transmitterWithout0With1Ex