Table of Contents
Advertisement
Instruction Manual
D101728X012
Fisher
3710 and 3720 Valve Positioners and
™
3722 Electro-Pneumatic Converter
Contents
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Educational Services
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
585 and 585R Actuators
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(To Increase Positioner Output Capacity)
www.Fisher.com
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . .
. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Positioners
2
2
2
5
6
6
6
7
7
8
8
10
11
11
W6144
16
18
19
20
20
20
22
22
23
25
25
26
27
28
29
29
30
30
W6058-1
32
33
3710 and 3720 Positioners
3720 POSITIONER MOUNTED
ON 1052 ACTUATOR
3710 POSITIONER MOUNTED
ON 1066 ACTUATOR
September 2017
SUPPLY
CONNECTION
Advertisement
Table of Contents
Related Manuals for Emerson Fisher 3710
Summary of Contents for Emerson Fisher 3710
-
Page 1: Table Of Contents
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Fisher 3710 and 3720 Valve Positioners and ™ 3722 Electro-Pneumatic Converter Contents Figure 1. Positioners Introduction ....... . . Scope of Manual . - Page 2 Scope of Manual This instruction manual includes installation, operation, calibration, maintenance, and parts ordering information for the Fisher 3710 pneumatic positioner and 3720 electro‐pneumatic positioner. This manual also provides field installation and maintenance information for the Fisher 3722 electro‐pneumatic converter. Refer to separate instruction manuals for information on the actuator, control valve, and other accessories.
- Page 3 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Table 1. Specifications Available Configurations Per ISO 8573-1 Maximum particle density size: Class 7 3710: J Single‐ or J double‐acting pneumatic Oil content: Class 3 rotary valve positioner Pressure Dew Point: Class 3 or at least 10_C less than 3720: J Single‐...
- Page 4 3710 pneumatic positioners comply with the KGS— Korea Gas Safety Corporation (South Korea) requirements of ATEX Group II Category 2 Gas and Dust Contact your Emerson sales office or Local Business Partner for classification/certification specific Electrical Classifications for 3722 Converter information CSA—...
-
Page 5: Positioner To Actuator Mountings List
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Table 3. Input Signal Range INPUT SIGNAL RANGE POSITIONER Pneumatic Electronic J 0.2 to 1.0 bar (3 to 15 psig) 3710 J 0.2 to 0.6 bar (3 to 9 psig) and w/3 to 15 psig span adj. -
Page 6: Installing The 3722 Converter
S2052, size 1, 2, and 3 SNAMUR Mounting 1. Includes purge tube option. 2. The size 30 actuator is no longer manufactured by Emerson. 3710 and 3720 positioners are available for field installation on existing size 30 actuators. Specifications Specifications are shown in table 1. -
Page 7: Hazardous Area Classifications And Special Instructions For "Safe Use" And Installation In Hazardous Areas For 3722 Converter
Special instructions are listed by approval. Note This information supplements the nameplate markings affixed to the product. Always refer to the nameplate itself to identify the appropriate certification. Contact your Emerson sales office or Local Business Partner for approval/certification information not listed here. WARNING Failure to follow these conditions of “safe use”... -
Page 8: Atex
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Refer to table 5 for approval information. Table 5. Hazardous Area Classifications for Fisher 3722 Converter —CSA (Canada) Certification Body Certification Obtained Entity Rating Temperature Code Intrinsically Safe Vmax = 30 VDC T4 (Tamb ≤... - Page 9 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Special Conditions for Safe Use Intrinsically Safe 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 one of these following values: U ≤...
-
Page 10: Iecex
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 IECEx Conditions of Certification Intrinsically Safe WARNING Substitution of components may impair intrinsic safety. -40_C ≤ Ta ≤ +82_C; T6 (Ta ≤ +47_C); T5 (Ta ≤ +62_C); T4 (Ta ≤ +82_C) Entity Parameters: Ui 30 V, li = 150 mA, Pi = 1.25 W, Ci = 0 nF, Li = 0 mH Flameproof... -
Page 11: Installation
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Installation To change an existing 3710 positioner into a 3720 positioner, install a 3722 electro‐pneumatic converter (figure 3). The 3722 electro‐pneumatic converter mounts over the input and supply connections of the 3710 positioner. Figure 3. - Page 12 To mount the positioner to an actuator with an existing Fisher 3610 positioner, remove the 3610 positioner and replace it with an appropriate metal cover plate and four cap screws. For assistance, contact your Emerson sales office or Local Business Partner.
- Page 13 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 4. Typical Positioner/Actuator Combinations 42B8466‐A 3710 POSITIONER MOUNTED ON A 1061 SIZE 30 ACTUATOR 42B8466‐A 3720 POSITIONER MOUNTED ON A 1061 SIZE 30 ACTUATOR NOTES: FIGURE 33 SHOWS ADDITIONAL POSITIONER/ACTUATOR COMBINATIONS ACTUATOR COVER PLATE REQUIRED WHEN REPLACING AN INSTALLED 3610 POSITIONER...
- Page 14 Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 1. See figure 5 for a typical actuator. Remove the actuator travel indicator machine screws, travel indicator, and actuator cover cap screws. Note When removing the actuator cover plate, take care not to change the position of the rod end bearing on the end of the turnbuckle inside the actuator housing.
- Page 15 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 5. Typical Piston Actuator (Fisher 1061) W6146‐1 W6147‐1 TIE BAR, MOUNTING PLATE REMOVED REAR VIEW, POSITIONER BASE PLATE, AND MOUNTING AREA Figure 6. Loosening the Cam Locknut W5916...
-
Page 16: Installing The 3710 Or 3720 Pneumatic Positioner On Size 25 Or
Installing the 3710 or 3720 Pneumatic Positioner on Size 25 or 50 585 and 585R Actuators Refer to figures 7, 8, and 9 for key number locations unless noted otherwise. Figure 7. Typical Fisher 3710 Positioner Mounted on a 585 Actuator SPACER (KEY 61) - Page 17 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 8. Drive Stud and Roller Bearing Assembly Figure 9. Drive Stud Bracket with Drive Stud and Roller Bearing Assembly DRIVE STUD BRACKET (KEY 98) LOCK ROLLER BEARING WASHER (KEY 101) (KEY 100) DRIVE STUD E‐RING...
-
Page 18: Connections
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 15. Make sure the cam locknut (key 37, figure 31) is loose, then stroke the valve/actuator to mid‐travel. Adjust the drive stud location vertically so that the feedback lever is perpendicular to the stem. Tighten the hex nut attached to the drive stud. -
Page 19: Supply Connection
40 micrometers in diameter will suffice in most applications, check with an Emerson field office and industry instrument air quality standards for use with corrosive gas or if you are unsure about the proper amount or method of air filtration or filter maintenance. -
Page 20: Output Connections
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Supply pressure must not exceed the following limits: D For the positioner, do not exceed the maximum pressure rating of 10.3 bar (150 psig). D For actuator pressure, refer to the appropriate actuator instruction manual for maximum allowable pressures. D For the valve body assembly, do not exceed the maximum allowable torque or thrust of the specific valve. - Page 21 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 13. Mounting the Positioner Base Plate with Purge Tube PURGE TUBE (KEY 58) O‐RINGS (KEY 59) LONG‐BLADED SCREW DRIVER THROUGH VENT W6073 The positioner does not have an external vent connection. A unit exhausts actuator pressure through a screened hole (vent opening, figure 12) located in the positioner base plate.
-
Page 22: Connecting The Purge Tube
If the 1/4 NPT vent connection is available, a vent line can be installed from the actuator. However, the valve/actuator/positioner assembly is not airtight. Maintain adequate ventilation and observe other safety measures. For help in selecting the purge option for positioner/ actuator combinations, contact your Emerson sales office Local Business Partner Connecting the Purge Tube The positioner mounts directly to the actuator cover plate of 1051, 1052, and 1061 actuators. -
Page 23: Diagnostic Connections
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Use the 1/2‐14 NPT conduit connection for field wiring installation. Refer to figures 14 and 15 when connecting field wiring from the control device to the converter. Connect the positive wire from the control device to the converter's positive ( + ) terminal and the negative wire from the control device to the converter's negative ( ‐... - Page 24 Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 16. Diagnostic Connections GAUGE STEM PROVIDED WHEN GAUGE IS SPECIFIED PIPE NIPPLE OUTPUT “A” PIPE NIPPLE OUTPUT “B” BODY PROTECTOR 3710 BODY 3722 PIPE NIPPLE PIPE BUSHING SUPPLY PIPE TEE CONNECTOR BODY TO INSTRUMENT NOTE:...
-
Page 25: Calibration
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Calibration The following calibration procedures are for the 3710 pneumatic positioner adjustment. For the 3720 electro‐pneumatic positioner, there are no adjustments within the 3722 converter portion of the positioner. All adjustments are accomplished within the pneumatic portion of the positioner. WARNING During calibration the valve will move. -
Page 26: Zero And Span Adjustments
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Zero and Span Adjustments See figure 19. Figure 19. Features and Adjustments 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... -
Page 27: Standard Or Beacon Indicator Alignment
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Tighten the zero adjustment locknut before proceeding to step 5. 5. Slowly increase the input signal until the input reaches the maximum input signal. Observe the actuator travel and valve position as the input increases. Determine the actuator/valve position at the maximum input signal. 6. -
Page 28: Changing Positioner Action
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 20. Standard Indicator FEEDBACK SHAFT INDICATOR SCALE (KEY 14) INDICATOR (KEY 15) (CAM SHAFT) (KEY 38) NOTES: 1 RETAINING RING (E‐CLIP) (KEY 12) IS NOT SHOWN. 2 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). W6061 3. -
Page 29: Single-Action/Double-Action
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 D Vent the actuator loading pressure. D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment. D Check with your process or safety engineer for any additional measures that must be taken to prevent against process media. -
Page 30: Split-Range Operation
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 See figure 21. 1. Turn off supply pressure. Reverse the piping connections between the actuator and the positioner output connections (OUTPUT A and OUTPUT B). D For single‐acting output, disconnect piping from OUTPUT B. Unplug OUTPUT A and connect the piping to it. Plug OUTPUT B. -
Page 31: September
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 D Vent the actuator loading pressure. D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment. D Check with your process or safety engineer for any additional measures that must be taken to prevent against process media. -
Page 32: Changing The Span Adjuster Assembly (To Change Positioner Input Range)
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 22. Spool Valve and Summing Beam SPOOL VALVE ASSY SPOOL RELIEF SPOOL SPOOL HEAD HEAD SPOOL FLEXURE SPOOL LARGER VIEW OF SPOOL HEAD FLEXURE SUMMING BEAM ASSY A6044 Changing the Span Adjuster Assembly (To Change Positioner Input Range) The span adjuster assembly (key 4) consists of the span adjustment knob, span adjustment shaft (threaded rod), range spring, and washer. -
Page 33: Principle Of Operation
9. Install the cam and cam locknut. Be sure the cam roller on the feedback arm assembly is properly positioned in contact with the cam. 10. Perform the calibration procedures in this manual. Principle of Operation See figure 23. Figure 23. Fisher 3710 Positioner Schematic INPUT SIGNAL PRESSURE INPUT MODULE SUMMING BEAM PIVOT... -
Page 34: Maintenance
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 determined by the location or rise of the cam which is attached to the feedback shaft. When the two opposing forces are equal or at a steady state, the summing beam holds the spool in a neutral position. At steady state, a small flow of air passes from supply through both outputs of the spool valve to the actuator, holding the actuator at a constant position. -
Page 35: Removing The 3722 Converter
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 The optional beacon indicator uses a retaining ring (e‐clip) (key 12) on the outside of the positioner cover. The retaining ring holds the extension shaft. After removing the beacon indicator, remove the external retaining ring to free the extension shaft. 3. -
Page 36: Removing The Feedback Arm Assembly
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 4. Inspect the feedback tie bar (key 42) attached to the actuator hub. If necessary, unscrew the machine screws (key 47) and remove the tie bar. Removing the Feedback Arm Assembly 1. -
Page 37: Disassembling The Feedback Arm Assembly And Span Adjuster Assembly
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Disassembling the Feedback Arm Assembly and Span Adjuster Assembly Note The zero adjustment locknut and zero adjustment knob are identical parts, key 35. Note To identify the span adjuster assembly for 0.4 to 2.0 bar (6 to 30 psig) input range, red color coding appears on the range spring. 1. -
Page 38: Disassembling The Input Module And Summing Beam Assembly
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 26. Spool Valve Body and Spool SPOOL VALVE BODY SPOOL HEAD W5917 SPOOL 1. Unscrew the two machine screws (key 3) that hold the spool valve (key 1) onto the action block (key 28). Remove the spool valve, taking care when separating the spool from the flexure on the summing beam. -
Page 39: Replacing The Input Module Diaphragm
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 4. See figure 27. Separate the summing beam assembly from the input module by removing one of the two machine screws (key 20) that hold the flexure retainers which join the summing beam flexure to the input module housing. Figure 27. -
Page 40: Assembling The Input Module And Summing Beam Assembly
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 28. Input Module Diaphragm and Diaphragm Figure 29. Assembly of Input Module Housing A6043 W5915 Assembling the Input Module and Summing Beam Assembly 1. Position the summing beam on the input module housing. Place the flexure over the alignment pins extending from the summing beam and input module. -
Page 41: Assembling The Spool Valve, Action Block, And Gasket
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 4. See figure 30. Properly position the input module and summing beam assembly on the positioner base plate using the alignment pins on the input module. If the spool valve (key 1) has not been removed, use care when positioning the input module and summing beam assembly. -
Page 42: Assembling The Feedback Shaft (Cam Shaft)
Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 5. Before tightening the machine screws holding the spool valve, make sure the end of the summing beam does not contact the spool. Rather, the summing beam should contact the spool head. If necessary, adjust the position of the spool valve on top of the action block, making sure the summing beam does not bind on the spool throughout the full travel of the summing beam. -
Page 43: Disassembling The 3722 Converter
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Disassembling the 3722 Converter See figure 31 for key number locations. 1. Turn off electrical power to the converter. Release all supply pressure from the positioner. 2. Remove the cap (key 72) and disconnect the field wiring from the terminal block. D If a grounding wire is used inside the housing compartment, disconnect the wire from the internal housing ground screw (key 81). -
Page 44: Testing The 3722 Converter Module
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should not, under any circumstances, be used in any Fisher instrument. Use of components not supplied by Emerson may void your warranty, might adversely affect the performance of the instrument, and could cause personal injury or property damage. -
Page 45: Positioner Common Parts
The needle bearing (key 25) is pressed into the feedback arm (key 21). beacon indicator To install a new needle bearing, the existing bearing must be pressed out. Consult your Emerson sales office or Local Business Partner. Retaining ring (E‐clip) (metric) Used to secure the indicator. - Page 46 Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 31. Fisher 3710 Components and Subassemblies SECTION A‐A 42B7272 SHT 1 OF 3 SECTION C‐C 3710 WITH BEACON INDICATOR ADD LUBE 42B7272 SHT 2 OF 3 SECTION D‐D ADD LUBE REAR VIEW SECTION B‐B...
- Page 47 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 31. Fisher 3710 Components and Subassemblies (continued) 3710 WITH GAUGES 3710 WITH TIRE VALVES ADD LUBE 3710 WITH STANDARD LOW‐PROFILE INDICATOR 42B7272 SHT 3 OF 3 Description Description Retaining ring (E‐clip) (metric) Action block For zero adjustment pivot...
-
Page 48: Diagnostic Connections
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Description Part Number Description Pipe bushing, qty 1, required to attach each Feedback shaft (cam shaft) pipe tee (key 56) to positioner connection Washer (metric) Spacer, installed between the feedback For feedback shaft (cam shaft) (key 38) shaft (key 38) and the positioner base plate Retaining ring (e‐clip) (metric) Screw (metric), slot‐head/cross‐recessed... -
Page 49: 3722 Electro-Pneumatic Converter
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 3722 Electro‐Pneumatic Description Converter (refer to figure 32) O‐ring For use w/nozzle restriction, key 75 Description For use w/converter module, key 89 Housing Vent 1/2‐14 NPT conduit connection O‐ring Used with converter cap, key 72 Screw (not shown) used to secure explosion‐proof cap Machine screw (2 req'd) -
Page 50: Positioner Mounting Parts
For 1066 size 75 (3 req'd) 1061 size 30, 40, 60 For 2052 size 1, 2, 3 *Recommended spare parts 2. The size 30 actuator is no longer manufactured by Emerson. The 3710 positioner is available for field installation on existing size 30 actuators. - Page 51 Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017 Figure 33. Positioner Mountings 3710 POSITIONER MOUNTED ON A 42B8478‐A 1051/1052 SIZE 33 ACTUATOR Description Description O‐ring, purge tube (2 req'd) Machine screw, self‐tapping For attaching the tie bar or tie Coupling bar extension to the actuator hub For 1061 sizes 80, 100...
- Page 52 Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 33. Positioner Mountings (Continued) 3710 POSITIONER MOUNTED ON A 42B8466‐A 1051/1052 SIZE 30 THROUGH 70 OR 1061 ACTUATOR 42B8484‐A 3710 POSITIONER MOUNTED ON A 1066 SIZE 75 ACTUATOR...
-
Page 53: Mounting Parts For Mounting Positioner On 585 And 585R Actuators
8, and 9 unless otherwise noted) Feedback Shaft (see figure 31) Note Mounting Plate Cap Screw Contact your Emerson sales office or Local Business Partner for Cap Screw descriptions of fittings, including materials of construction. Specify Spacer quantity of fittings required. - Page 54 Instruction Manual 3710 and 3720 Positioners September 2017 D101728X012 Figure 35. FM Loop Schematic for Fisher 3722 Converter (Installation Drawing GE28590) NON-HAZARDOUS LOCATION HAZARDOUS LOCATION INTRINSIC SAFETY CLASS I, II, III, DIV 1, GROUPS A,B,C,D,E,F,G CLASS I ZONE 0 AEx ia IIC NON-INCENDIVE CLASS I, DIV 2, GROUPS A,B,C,D FM APPROVED BARRIER...
-
Page 55: D101728X012 September
Instruction Manual 3710 and 3720 Positioners D101728X012 September 2017... - Page 56 Fisher and FlowScanner are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
Need help?
Do you have a question about the Fisher 3710 and is the answer not in the manual?
Questions and answers