Page 1: Table Of Contents
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Types 3710 and 3720 Valve Positioners and Type 3722 Converter Contents Introduction ....... Scope of Manual .
Page 2: Introduction
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Contents (cont’d) about these instructions, contact your Fisher sales office. Disassembling the Spool Valve, Action Block, and Gasket ......Disassembling the Input Module and Summing Beam Assembly .
Page 3 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Table 1. Specifications (1,5) Available Configurations Supply Pressure Type 3710: J Single- or J double-acting Recommended: 0.3 bar (5 psig) above actuator pneumatic rotary valve positioner requirement Type 3720: J Single- or J double-acting Maximum: 10.3 bar (150 psig) or maximum electro-pneumatic rotary valve positioner pressure rating of the actuator, whichever is lower...
Page 4 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Table 1. Specifications (Continued) Operating Influences Electrical Classifications for Type 3722 Converter Supply Pressure Sensitivity: A 10% change in supply pressure changes the valve shaft position Intrinsically Safe, Explosion proof, less than the following percentages of valve Dust-Ignition proof, rotation:...
Page 5 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 MOUNTING SCREW FEEDBACK SHAFT TIE BAR POSITIONER EXTENSION MOUNTING MOUNTING (KEY 44) PLATE (KEY 43) SCREWS W6059-1*/IL Figure 2. Mounting the Positioner Base Plate Table 3. Input Signal Range INPUT SIGNAL RANGE POSITIONER TYPE POSITIONER TYPE Pneumatic...
Page 6 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Table 5. Type 3722—Hazardous Area Classifications for North America CERTIFICATION CERTIFICATION OBTAINED ENTITY RATING TEMPERATURE CODE ENCLOSURE RATING BODY (Intrinsic Safety) Class/Division t 82°C) − − − T5 (T SClass I,II,III Division 1 GP A,B,C,D,E,F,G per drawing 24B0238 (Explosion Proof) t 82°C)
Page 7: Educational Services
WARNING electro-pneumatics positioners, as well as a variety of other products, contact: Avoid personal injury from sudden Emerson Process Management release of process pressure. Before Educational Services, Registration mounting the Type 3720 electro- P.O. Box 190; 301 S. 1st Ave.
Page 8: Mounting The Positioner
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 D Use lock-out procedures to be Mounting the Positioner sure that the above measures stay in effect while you work on the WARNING equipment. D Check with your process or safety Refer to the Installation WARNING at the beginning of the Installing the engineer for any additional measures...
Page 9 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 42B8466-A/DOC TYPE 3710 POSITIONER MOUNTED ON A TYPE 1061 SIZE 30 ACTUATOR 42B8466-A/DOC TYPE 3720 POSITIONER MOUNTED ON A TYPE 1061 SIZE 30 ACTUATOR NOTES: FIGURE 33 SHOWS ADDITIONAL POSITIONER/ACTUATOR COMBINATIONS ACTUATOR COVER PLATE REQUIRED WHEN REPLACING AN INSTALLED TYPE 3610 POSITIONER Figure 4.
Page 10 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 W6147-1/IL TIE BAR, MOUNTING PLATE REMOVED W6146-1/IL REAR VIEW, POSITIONER BASE PLATE, AND MOUNTING AREA Figure 5. Typical Piston Actuator (Type 1061)
Page 11 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 W5916/IL Figure 6. Loosening the Cam Locknut Note Actuator cover alignment on the Type 1052 actuator can be aided by moving When removing the actuator cover the actuator slightly away from its plate, take care not to change the “up”...
Page 12: Installing The Type 3710 Or 3720 Pneumatic Positioner On Size 25 Or
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 mounting drawings (figures 4, 33). b. Refer to figure 9. Attach the drive stud (with Properly align the positioner mounting roller bearing) to the drive stud bracket (key 98) plate before attaching the mounting with 1/4-inch hex nut (key 96), lock washer (key plate to the actuator cover plate.
Page 13 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 SPACER (KEY 61) CAP SCREW (KEY 99) MOUNTING PLATE (KEY 43) LOCK WASHER (KEY 100) DRIVE STUD BRACKET (KEY 98) CAP SCREW (KEY 93) HEX NUT (KEY 96) MOUNTING BEARING (KEY 97) CAP SCREW (KEY 46)
Page 14: Connections
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 FEEDBACK LEVER DRIVE STUD BRACKET (KEY 98) (KEY 94) LOCK DRIVE STUD WASHER AND ROLLER BEARING (KEY 100) FLAT WASHER DRIVE STUD (KEY 1103) AND ROLLER BEARING HEX NUT (KEY 96) Figure 11.
Page 15: Supply Connection
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 The positioner does not have a remote vent For diaphragm rotary actuators (single-action connection. Refer to the section on vent opening, output from the positioner): Plug OUTPUT A. purge option, and actuator vent connection for Connect OUTPUT B to the diaphragm casing instructions about a remote vent connection.
Page 16 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 OUTPUT CONNECTIONS TOP VIEW INPUT CONNECTIONS INPUT (SUPPLY) CONNECTION VENT RIGHT SIDE VIEW M20 CABLE GLAND RIGHT SIDE VIEW TYPE 3720 VENT OPENING REAR VIEW 34B0693-A B2386-1/IL TYPE 3710 Figure 12. Connections See figure 13.
Page 17: Connecting The Purge Tube
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 PURGE TUBE (KEY 58) O-RINGS (KEY 59) LONG-BLADED SCREW DRIVER THROUGH VENT W6073/IL Figure 13. Mounting the Positioner Base Plate with Purge Tube installs in the vent opening in the positioner base When using the purge option, remember: The plate.
Page 18: Positioner
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 4−20 mA CONVERTER MODULE TERMINAL BLOCK FIELD WIRING 60 OHMS 5.6 V 5.6 V 5.6 V INDICATING DEVICE 60 OHMS GROUNDING SCREW Figure 15. Circuit Schematic EARTH SCREW 4. Secure the positioner to the mounting plate using NOTES: FOR TROUBLESHOOTING OR MONITORING OPERATION THE the (hex) socket head cap screws (key 46).
Page 19 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 GAUGE STEM PROVIDED WHEN GAUGE IS SPECIFIED PIPE NIPPLE OUTPUT “A” PIPE NIPPLE OUTPUT “B” BODY PROTECTOR TYPE 3710 BODY TYPE 3722 PIPE BUSHING PIPE NIPPLE SUPPLY PIPE TEE CONNECTOR BODY TO INSTRUMENT NOTE: REMOVE PIPE PLUG,...
Page 20: Diagnostic Connections
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Diagnostic Connections See figure 16. For diagnostic testing of control valve packages (valve, actuator, positioner, and accessories), special connectors and hardware are available. The hardware required for diagnostic connections includes 3/4-inch NPT pipe nipples and pipe tees with a 1/8-inch NPT pipe bushing for the connector.
Page 21: Zero And Span Adjustments
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 W5916/IL Figure 18. Loosening the Cam Locknut increasing input signal. Tighten the cam locknut, Note leaving a gap of approximately 0.80 mm (0.031 inches) between the cam and roller. Tighten the cam The zero adjustment locknut and zero nut to 3.8 to 9.1 nSm (30 to 75 lbfSin).
Page 22 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 ACTION BLOCK SPAN ADJ ASSY MOUNTING SCREW HOLE NAMEPLATE AREA SPOOL VALVE SCREENED VENT OPENING ZERO ADJ PIVOT INPUT MODULE SPAN ADJ SHAFT (THREADED ROD) ZERO ADJUSTER LOCK NUT SUMMING BEAM ZERO ADJUSTER ASSEMBLY SUMMING BEAM...
Page 23: Standard Or Beacon Indicator Alignment
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 FEEDBACK SHAFT INDICATOR SCALE (KEY 14) INDICATOR (KEY 15) (CAM SHAFT) (KEY 38) NOTES: RETAINING RING (E-CLIP) (KEY 12) IS NOT SHOWN. THE SHAFT OF THE INDICATOR (KEY 15) PASSES THROUGH THE POSITIONER COVER AND FITS OVER THE END OF THE FEEDBACK SHAFT (CAM SHAFT) (KEY 38).
Page 24: Changing Positioner Action
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Single-Acting/Double-Acting OUTPUT CONNECTIONS See figure 21 for positioner output connections. See figure 23 for the positioner schematic. Use 3/8-inch tubing between the positioner and actuator. D For single-acting output, plug positioner OUTPUT A.
Page 25: Split-Range Operation
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 cam locknut (key 37). Remove the cam, turn it over, outputs for the standard and high-capacity spool and reinstall it, making sure the cam is positioned for valves. the proper input signal range. 1.
Page 26: Changing The Span Adjuster Assembly (To Change Positioner Input Range)
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Note SPOOL VALVE ASSY SPOOL RELIEF The zero adjustment locknut and zero SPOOL adjustment knob are identical parts, HEAD key 35. 2. Loosen the zero adjustment locknut and turn the zero adjustment knob (key 35) until the range spring is free from the summing beam.
Page 27: Principle Of Operation
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Principle of Operation INPUT SIGNAL PRESSURE INPUT MODULE See figure 23. SUMMING BEAM PIVOT The Type 3710 pneumatic positioner accepts a SPOOL VALVE pneumatic input signal and the Type 3720 FEEDBACK SPRING electro-pneumatic positioner accepts a milliampere...
Page 28: Positioner Maintenance
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 accessories. Be sure the actuator removing the external scale, remove cannot suddenly open or close the the internal retaining ring to free the valve. indicator. D Use bypass valves or completely The optional beacon indicator uses a retaining ring (e-clip) (key 12) on the shut off the process to isolate the...
Page 29 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 W6149/IL REMOVING ONE OF THE TWO MOUNTING SCREWS SEPARATING THE CONVERTER FROM THE W6148/IL POSITIONER BASE PLATE Figure 24. Removing the Converter Mounting Screws...
Page 30: Removing The Positioner
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Removing the Feedback Arm Assembly WARNING Refer to the WARNING at the beginning of the Maintenance section of this manual. 1. Unscrew the cam locknut (key 37) and remove the cam (key 36). Note The zero adjustment locknut and zero W6062/IL...
Page 31: Disassembling The Feedback Arm Assembly And Span Adjuster Assembly
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Disassembling the Feedback Arm 4. After removing the retaining ring, washer, and pivot, inspect the needle bearing (key 25). The Assembly and Span Adjuster Assembly needle bearing is pressed into the feedback arm. If the needle bearing must be replaced, replace the feedback arm assembly (key 21).
Page 32 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 SPOOL VALVE BODY SPOOL HEAD SPOOL W5917*/IL Figure 26. Spool Valve Body and Spool W5913/IL Figure 27. Separating the Summing Beam Assembly from the Input Module...
Page 33: Disassembling The Spool Valve, Action Block, And Gasket
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Disassembling the Spool Valve, Action Disassembling the Input Module and Block, and Gasket Summing Beam Assembly WARNING WARNING Refer to the WARNING at the beginning of the Maintenance section of this manual. Refer to the WARNING at the beginning of the Maintenance section 1.
Page 34: Replacing The Input Module Diaphragm
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 W5915/IL Figure 28. Input Module Diaphragm and Diaphragm Housing Replacing the Input Module Diaphragm WARNING Refer to the WARNING at the beginning of the Maintenance section of this manual. See figure 28. 1.
Page 35: Assembling The Input Module And Summing Beam Assembly
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Assembling the Input Module and Summing Beam Assembly SPOOL VALVE ASSY SPOOL RELIEF WARNING SPOOL HEAD Refer to the WARNING at the beginning of the Maintenance section of this manual. 1.
Page 36: Assembling The Spool Valve, Action Block, And Gasket
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 5. Secure the assembly with the four machine 6. Be sure the spool head and summing beam screws (key 3). remain engaged, but do not bind up, over the entire operating range of the input module.
Page 37: Type 3722 Converter Maintenance
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 D If an external grounding wire is used, before installation into the zero adjustment pivot. Install the span adjustment assembly by sliding the disconnect the grounding wire from the external threaded rod through the zero adjustment pivot on ground screw (key 81).
Page 38: Testing The Type 3722 Converter Module
Calibration section of this Note manual. Do not attempt to calibrate the converter module. There are no converter module Neither Emerson, Emerson Process adjustments. Management, Fisher, nor any of their affiliated entities assumes Testing the Type 3722 Converter Module responsibility for the selection, use, and maintenance of any product.
Page 39: Parts List
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Parts List Description Part Number Screw (metric), slot-head/cross-recessed, Description Part Number S18800 (18-8 SST) For indicator cover (4 req’d) 12B7267X012 For positioner cover (captive) (4 req’d) 12B7267X012 Hex nut, S18800 (18-8 SST) (4 req’d) For indicator cover screws (key 8) 12B7269X012 Beacon indicator...
Page 40 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 SECTION A-A 42B7272 SHT 1 OF 3/DOC SECTION C-C TYPE 3710 WITH BEACON INDICATOR 42B7272 SHT 2 OF 3/DOC SECTION D-D REAR VIEW SECTION B-B 42B7272 SHT 2 OF 3/DOC Figure 31.
Page 41 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 TYPE 3710 WITH GAUGES TYPE 3710 WITH TIRE VALVES TYPE 3710 WITH STANDARD LOW-PROFILE INDICATOR 42B7272 SHT 3 OF 3/DOC Figure 31. Type 3710 Components and Subassemblies (Continued)
Page 42 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Description Part Number Description Part Number Vent screen, S18800 (18-8 SST) 12B7321X012 Shoulder screw (metric), S18800 (18-8 SST) 12B7298X012 Note Note To attach a gauge or tire valve to the positioner or The needle bearing (key 25) is pressed into the converter, use a pipe nipple (key 68) and a street tee feedback arm (key 21).
Page 43: Diagnostic Connections
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Diagnostic Connections (refer to Type 3722 Electro-Pneumatic figure 16) Converter (refer to figure 32) Housing, aluminum FlowScannert valve diagnostics system hook-up 1/2-inch NPT conduit connection standard 24B0625X012 Includes pipe tee, pipe nipple, pipe bushings, explosion-proof 24B0626X012 connector body, and body protector.
Page 44: Positioner Mounting Parts
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 TYPE 3720 WITH SUPPLY GAUGE SECTION A-A 34B0694-A/DOC Figure 32. Type 3722 Components and Subassemblies Description Part Number Positioner Mounting Parts (refer to figure 33) Actuator cover plate, aluminum Note For 1051/1052 size 30 , 40 22B8469X012...
Page 45 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1051/1052 SIZES 33 ACTUATOR 42B8478-A/DOC Figure 33. Positioner Mountings Description Part Number Description Part Number Mounting plate, steel Tie bar, S18800 (18-8 SST) For 1031 sizes 26, 33, 45, 60, 80 32B8487X012 For 1032 size 45...
Page 46 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 42B8466-A/DOC TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1051/1052 SIZES 30 THROUGH 70 OR TYPE 1061 ACTUATOR TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1066 SIZE 75 ACTUATOR 42B8484-A/DOC Figure 33.
Page 47 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1031 SIZES 20 THROUGH 80 ACTUATOR 32B8490-A/DOC TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1032 SIZES 45 THROUGH 680 ACTUATOR 33B0322-B/DOC TYPE 3710 POSITIONER MOUNTED ON A FISHER TYPE 1032 SIZES 1125 THROUGH 4580 ACTUATOR 33B0321-B/DOC...
Page 48: Mounting Parts For Mounting Positioner On Type 585 And 585R Actuators
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Description Part Number Description Part Number Cap screw, hex socket, S18800 (18-8 SST) Mounting Parts for the 67CFR on the For attaching the positioner base Type 1032 Actuator plate to the mounting plate or actuator cover plate For 1031 sizes 26, 33, 45, 60, 80 (3 req’d) 1J591438992...
Page 49: Loop Schematics/Nameplates
Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 Loop Schematics/Nameplates This section includes loop schematics required for wiring of intrinsically safe installations. It also contains the approvals nameplates. If you have any questions, contact your Fisher sales office. 24B0238-A/DOC Figure 34.
Page 50 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 24B0239-A/DOC Figure 35. Type 3722 FM Loop Schematics Figure 36. Type 3722 CSA / FM Approvals Nameplate...
Page 51 Instruction Manual Form 5300 3710 and 3720 Positioners July 2005 SPECIAL CONDITIONS FOR SAFE USE: THIS EQUIPMENT IS INTRINSICALLY SAFE AND CAN BE USED IN POTENTIALLY EXPLOSIVE ATMOSPHERES. THE ELECTRICAL PARAMETERS OF CERTIFIED EQUIPMENT WHICH CAN BE CONNECTED TO THE DEVICE MUST NOT EXCEED THE FOLLOWING VALUES: 30 Vdc ;...
Page 52 FlowScanner and Fisher are marks owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of Emerson Electric Co. Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

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