Fisher 3710 and 3720 Valve Positioners and 3722 Electro ...

1 3710 and 3720 Valve Positioners and3722 Electro -Pneumatic of to Actuator Mountings the 3722 Area Classifications and Special Instructions for Safe Use andInstallation in Hazardous Areas for 3722 the the 3710 or 3720 Pneumatic positioner on Size 25 or 50 585 and 585R Opening, Purge Option, and ActuatorVent the Purge Connection for the the Initial Cam and Span or Beacon Indicator positioner Action/Double Action/Reverse Range the Spool Valve (To Increase positioner Output Capacity) the Span Adjuster Assembly(To Change positioner Input Range) of 1. PositionersW6144W6058 1 SUPPLYCONNECTION3720 positioner MOUNTEDON 1052 ACTUATOR3710 positioner MOUNTED ON 1066 ACTUATORI nstruction ManualD101728X0123710 and 3720 PositionersOctober 2018 Instruction ManualD101728X0123710 and 3720 PositionersOctober 20182 Contents (cont'd) the Standard or Beacon the 3722 the the Feedback Arm the Feedback Arm Assembly and Span Adjuster the Feedback Shaft (Cam Shaft) the Spool Valve , Action Block, and the Input Module and Summing Beam the Input Module the Input Module and Summing Beam the Spool Valve , Action Block,and the Feedback Shaft (Cam Shaft)

2 The Feedback Arm Assembly and Span Adjuster Converter the Converter Primary O Ringand the 3722 the 3722 the 3722 Converter Common Electro Pneumatic Mounting Parts for Mounting positioner on 585 and 585R of ManualThis instruction manual includes installation, operation, calibration, maintenance, and parts ordering information forthe Fisher 3710 pneumatic positioner and 3720 Electro pneumatic manual also provides field installation and maintenance information for the Fisher 3722 Electro pneumaticconverter. Refer to separate instruction manuals for information on the actuator, control Valve , and other not install, operate, or maintain a 3710 pneumatic positioner , a 3720 Electro pneumatic positioner or a 3722electro pneumatic converter without being fully trained and qualified in Valve , actuator and accessory installation,operation and maintenance.

3 To avoid personal injury or property damage it is important to carefully read, understand,and follow all of the contents of this manual, including all safety cautions and warnings. If you have any questionsabout these instructions, contact your Emerson sales office before 3710 pneumatic positioner and 3720 Electro pneumatic positioner are used with either diaphragm actuators(spring return) or piston rotary actuators (spring return or double action) as shown in figure 1. These positionersprovide a Valve ball or disk position for a specific input signal. These Positioners can easily be configured to providesingle or double action output for rotary 3710 pneumatic positioner accepts a pneumatic input signal. The 3720 Electro pneumatic positioner accepts amilliampere (mA), direct current (DC), input signal.

4 Refer to table 1 for an explanation of type 3710 pneumatic positioner provides a Valve position for a standard pneumatic input signal. The positioner mayalso be split ranged. See table 3 for input signal 3720 Electro pneumatic positioner provides a Valve position for a milliampere (mA), direct current (DC), inputsignal. The positioner may also be split ranged. See table ManualD101728X0123710 and 3720 PositionersOctober 20183 Table 1. SpecificationsAvailable ConfigurationsThe Fisher 3700 series of Positioners include thefollowing models:3710: JSingle or Jdouble acting pneumaticrotary Valve positioner3720: JSingle or Jdouble actingelectro pneumatic rotary Valve positionerconsisting of a 3710 with a 3722 attached3722: An Electro pneumatic converter thatconverts a 4-20 mA DC input signal to a to bar (3 to 15 psig) signal for the pneumaticpositionerInput Signal3710:Standard: to bar (3 to 15 psig)or bar (6 to 30 psig)Split Range: to bar (3 to 9 psig) and bar (9 to 15 psig) or to bar (6 to 18psig) and to bar (18 to 30 psig)3720:Standard: J4-20 mA DC constant current with30 VDC maximum compliance voltageSplit Range.

5 J4-12 mA DC or 12-20 mA DCEquivalent Circuit3720: 120 ohms shunted by three V zenerdiodes. See figure SignalPneumatic pressure as required by the actuator upto full supply pressureAction(1): Field reversible between Jdirect andJreverse within the pneumatic positionerSupply Pressure(2)Recommended: bar (5 psig) above actuatorrequirementMaximum: bar (150 psig) or maximumpressure rating of the actuator, whichever is lowerSupply Medium3710: Air or Natural Gas3720: AirSupply medium must be clean, dry, and noncorrosivePer ISA Standard maximum 40 micrometer particle size in the airsystem is acceptable. Further filtration down to 5micrometer particle size is recommended. Lubricantcontent is not to exceed 1 ppm weight (w/w) orvolume (v/v) basis.

6 Condensation in the air supplyshould be minimizedPer ISO 8573-1 Maximum particle density size: Class 7 Oil content: Class 3 Pressure Dew Point: Class 3 or at least 10_C less thanthe lowest ambient temperature expected3720 Positioners are not approved for use withnatural gas as the supply mediumSteady State Air Consumption(3)3710:6 mm Standard Spool Valve : normal m3/hr (29 scfh) at bar (60 psig) supply pressure3720:6 mm Spool Valve : normal m3/hr (36 scfh) at bar (60 psig) supply pressureMaximum Supply Air Demand(3) (Double Acting Output)6 mm Spool Valve : 20 normal m3/hr (700 scfh) bar (60 psig) supply pressureTypical Performance(4)3710:Independent Linearity: of output spanHysteresis: of output spanDeadband: of input span3720:Independent Linearity: of output spanHysteresis: of output spanDeadband: of input spanElectromagnetic Compatibility for 3722 Meets EN 61326 1:2013 Immunity Industrial locations per Table 2 of the EN 61326 1 standard.

7 Performance is shown in table 2 below. Emissions Class A ISM equipment rating: Group 1, Class ANote: Electromagnetic Interference (EMI)specifications also apply to 3720 positionersOperating InfluencesSupply Pressure Sensitivity: A 10% change in supplypressure changes the Valve shaft position less thanthe following percentages of Valve rotation:3710: at bar (60 psig) supply pressure3720: at bar (60 psig) supply pressure continued Instruction ManualD101728X0123710 and 3720 PositionersOctober 20184 Table 1. Specifications (Continued)Operative Temperature Limits(2)J-40 to 80_C (-40 to 180_F), J-50 to 107_C (-58 to 225_F)Hazardous Area Classification for 3710 Positioner3710 pneumatic Positioners comply with therequirements of ATEX Group II Category 2 Gas andDustElectrical Classifications for 3722 ConverterCSA Intrinsically Safe, Explosion-proof, Type n,Dust Ignition-proofFM Intrinsically Safe, Explosion-proof, Type n, Dust Ignition-proof, Non incendiveATEX Intrinsically Safe, Flameproof, Type n IECEx Intrinsically Safe, Flameproof, Type nNote.

8 These classifications also apply to the 3720positionerHousing Classification for 3722 ConverterCSA Type 3 IP64FM NEMA 3, IP54 IECEx IP54 Mount instrument with vent on side or bottom ifweatherproofing is a : These classifications also apply to the 3720positionerOther Classifications/Certifications for 3722 ConverterCUTR Customs Union Technical Regulations (Russia,Kazakhstan, Belarus, and Armenia)INMETRO National Institute of Metrology, Qualityand Technology (Brazil)KGS Korea Gas Safety Corporation (South Korea)Contact your Emerson sales office for classification/certification specific informationPressure Connections1/4 NPT internalElectrical Connection for 3720 Positioner1/2 14 NPT conduit connectionRotary Valve RotationJ90 degrees (standard) J60 degrees (optional)Approximate Weight3710: kg ( pounds) 3720.

9 Kg ( pounds)Declaration of SEPF isher Controls International LLC declares thisproduct to be in compliance with Article 4paragraph 3 of the PED Directive 2014/68/EU. It wasdesigned and manufactured in accordance withSound Engineering Practice (SEP) and cannot bearthe CE marking related to PED , the product may bear the CE marking toindicate compliance with other applicable EuropeanCommunity : Specialized instrument terms are defined in ANSI/ISA Standard Process Instrument For direct action, an increasing input signal extends actuator rod. For reverse action, an increasing input signal retracts actuator The pressure and temperature limits in this document, and any applicable code or standard limitation should not be Normal cubic meters per hour (0 C and bar absolute).

10 Scfh standard cubic feet per hour (60 F and psia).4. Typical values tested using a 1061 size 30 actuator at bar (60 psig) supply pressure. Performance may vary with other actuator types and supply 2. Fisher 3722 Electro Converter(1) EMC Summary Results ImmunityPortPhenomenonBasic StandardTest LevelPerformanceCriteria(2)EnclosureElec trostatic Discharge (ESD)IEC 61000 4 24 kV contact8 kV airARadiated EM fieldIEC 61000 4 380 to 1000 MHz @ 10V/m with 1 kHz AM at 80%14000 to 2000 MHz @ 3V/m with 1 kHz AM at 80%2000 to 2700 MHz @ 1V/m with 1 kHz AM at 80%ARated power frequency magneticfieldIEC 61000 4 860 A/m at 50 HzAI/O signal/controlBurst (fast transients)IEC 61000 4 41 kVASurgeIEC 61000 4 51 kV (line to ground only, each)BConducted RFIEC 61000 4 6150 kHz to 80 MHz at 3 VrmsASpecification limit = 1% of span1.