Mounting and Operating Instructions EB 8384-0 EN
Contents
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3. G EEx nA nL IIC T6 II 3 D IP 65 T 80 C Degree of protection IP 65 Materials Die cast aluminum GD 2 acc to DIN 1725 3 2582 chromated and plastic coated External parts Stainless steel 1 4571 and 1 4301 Weight Approx 1 kg 6 8384 0 EN Attachment to the control valve Mounting parts and accessories 2 Attachment to the control valve Mounting parts and accessories The positioner can be attached either di rectly to SAMSON 3277 Actuator or according to IEC 60534 6 NAMUR to con trol valves with cast yokes or rod type yoke For attachment to the various actuators cor responding mounting parts and accessories are required These are listed with their or der numbers in Tables 1 to 4 On attaching the positioner it is important to observe the assignment between lever and pin position according to the travels listed in the travel tables The travel that can be implemented at the valve is restricted by the pin position used and additionally by the selected fail safe ac tion and the actuator spring compression re quired The positioner is standard equipped with the lever M pin position 35 Note If the standard mounted lever M pin posi tion 35 is replaced the newly mounted le ver must be moved once all the way as far as it will go in both directions to adapt it to the internal measuring lever Travel table for direct attac
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7. 20 0 mA and S10 to ensure a tight volve shut off Correct deviation at the ZERO adjuster AIR TO OPEN 59 510 Actuator stem extends ON OFF AIR TO CLOSE 59 510 Actuator stem retracts OFF ON 59 510 ree way valve ON ON 8384 0 EN 27 Maintenance 6 Maintenance The positioner does not require any mainte nance There are filters with a 100 mesh size in the pneumatic connections for supply and output which can be removed and cleaned if required The maintenance instructions of any up stream supply air pressure reducing stations must be observed 28 8384 0 EN 7 Servicing explosion protected devices If a part of the positioner on which the ex plosion protection is based needs to be ser viced the positioner must not be put back into operation until an expert has inspected the device according to explosion protection requirements has issued a certificate stating this or given the device a mark of confor mily Inspection by an expert is not required if the manufacturer performs a routine check on the device prior to putting it back into oper ation The passing of the routine check must be documented by attaching a mark of con formity to the device Explosion protected components may only be replaced by original checked compo nents from the manufacturer Devices that have already been used outside of hazardous areas and are intended for use in hazardous areas in future must com
8. Gasket Formed seal R 15 amp N 9 1 gt E 2 Ate Ll 3 Y 4 11 N GF 1 2 NA Cut out of cover plate Supply 9 Output 38 7 4 lt M Important Always use the connecting plate 6 included in the accessories to connect 7 supply and output Never screw threaded parts directly M 8 into the housing 7 uet Fig 3 Direct attachment Signal pressure connection for Type 3277 5 Actuator with 120 cm 8384 0 11 Attachment to the control valve Mounting parts and accessories 2 1 2 Type 3277 Actuator Refer to Table 2 on page 8 for the required mounting parts as well as the accessories with their order numbers Note the travel table on page 7 Actuators with 240 to 700 cm2 The positioner can be mounted either on the left or on the right side of the yoke The sig nal pressure is routed to the actuator over the connection block 12 for actuators with fail safe action Actuator stem extends in ternally through a bore in the valve yoke and for Actuator stem retracts through ex ternal piping 1 Place follower clamp 3 on the actuator stem align and screw tight so that the mounting screw is located in the groove of the actuator stem 2 Mount co
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10. ply with the safety demands placed on re paired devices Prior to operation they must be tested according to the specifications stipulated for Repairing explosion pro tected devices 8 Dimensions in mm Dimensions in mm 210 Pressure gauge bracket or connecting plate Lever mm 8 17 50 L 100 Output A1 34 a XL 200 m Output 38 Supply 9 Reversing amplifier option A Supply Z Output 8384 0 EN 29 001 lles pung 9LL8E Q 001 jersunsepung ui Jo paosddo joys JO oscuddo o spospg ejapauos sa amp unu paypa ut eq paypay 441 sui sa amp unu paypa Aaus u peanpouds eq ad L 23 oos noui 2441 23 095 s
11. to ON to reduce the gain of the control loop It is recommended to check zero when this switch position has been changed 8384 0 25 Start up and settings 5 10 Reference variable Use switches 57 and 58 to adjust the input signal i e the range of the reference vari able Switches 57 58 57 58 57 S8 OFF OFF ON OFF OFF ON Input mA AS NR 40 In split range operation Fig 10 right the control valves work with smaller reference variable ranges The signal to control two control valves is divided such that both valves move through their full travel range at 50 of the input signal e g first valve set to 4 to 11 9 mA and second valve adjusted to 12 1 to 20 mA To avoid overlapping a dead band of 0 1 mA is to be observed 5 11 Adjusting zero Upon adjustment at the control valve the travel must be adapted to the reference vari able For example with a reference variable of 4 to 20 mA the valve must also move through its full travel range from 0 to 100 Fig 10 left The starting point zero always refers to the closed position of the control valve De pending on the fail safe position of the valve Actuator stem extends AIR TO OPEN or Actuator stem retracts AIR TO CLOSE and the direction of action of the positioner gt gt or lt gt zero can either be the lower or upper range value 4 12 or 20 mA of the reference variable range For Actuator stem ex
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13. Electropneumatic Positioner Type 3730 0 Fig 1 Type 3730 0 Mounting and Operating Instructions EB 8384 0 EN Edition February 2005 Contents Contents RR NNNNNNN OON O Q E GQ N N Naa N 5 10 5 11 5 12 5 13 2 EB 8384 0 EN Page Design and principle of operation 4 Technical data 3552 2 e su he eR SE 6 Attachment to the control valve Mounting parts and accessories 7 Direct attachment a are ser 10 Type 3277 5 Actuator 2 2 10 Type 347 7 u eee bee os W W un ex e S ES 12 Attachment according to 6053446 14 Reversing amplifier for double acting actuators 16 Attachment to Type 3510 Micro flow Valve 18 Connections eke Gana ee eda Be Pe Se S 20 Pneumatic connections 20 Signal pressure gauges 20 Supply pressure 20 Electrical connections 21 z s D Be eae bee eno we 23 Operator controls 2 s 2 S NOG S S PMN 23 Start up and settings 24 Default switch 24 Fail safe position 24 Volume restriction Q 24 Pr
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15. e down are not valid For valves with actuator version Actua tor stem extends AIR TO OPEN actua tor on top pneumatic connections point to right ST left 51 OFF For valves with actuator version Actua tor stem retracts AIR TO CLOSE actu ator on top pneumatic connections point to right SI OFF left 51 ON 24 8384 0 EN 5 3 Volume restriction Q For actuators smaller than 240 cm2 with a loading pressure connection at the side Type 3271 5 set restriction to MIN SIDE For a connection at the back Type 3277 5 set restriction to MIN BACK For actuators 240 cm and larger set to MAX SIDE for a side connection and to MAX BACK for a connection at the back 5 4 Presetting the travel At switches S2 and S3 the travel which co mes closest to the rated valve travel is to be adjusted taking into account the pin posi tion If necessary the final adjustment is to be made as described in section 5 12 Pin Travel posi when span adjuster is at 0 e 52 5352 sals2 53 52 53 OFF OFF ON OFF OFF ON ON ON 17 5 7 5 10 6 25 5 3 Us 10 6 15 35 78 10 6 15 21 2 50 10 6 19 21 2 30 70 15 21 2 30 42 4 100 212 30 42 4 60 200 42 4 60 84 8 120 5 5 Direction of action At switch S4 the direction of action w x is to be adjusted gt gt The valve travel x increases when the reference variable w increases or the valve travel decreases wh
16. e restriction Q switches which allow you to set the most im NUM portant functions The volume restriction is used to adapt the air supply to the actuator size Depending on the air passage at the actuator two fixed settings are available DIP switches and their functions S5 Limit output signal pressure to 2 4 bar 51 Fail safe action of the actuator S Chonge gain foctor S2 S3 Rated travel of the control valve 57 58 _ Set range of reference variable 54 Direction of action w x S9 S10 Activate tight closing function Actuator symbols for pneumatic connections on the right 2 e BATZETZT DIP switches gi Zero adjuster Span adjuster Actuator symbols for pneumatic connections on the left Fig 9 Operator controls 8384 0EN 23 Start up and settings 5 Start up and settings 5 1 Default switch positions After the positioner has been mounted on the valve all switches 51 to 510 must be set to OFF 5 2 Fail safe position At switch S1 the fail safe action of the actu ator Actuator stem extends AIR TO OPEN signal pressure opens the valve or Actua tor stem retracts AIR TO CLOSE signal pressure closes the valve must be adjusted To do so read the associated switch posi tion 1 ON or OFF from the cover plate The symbols that can be read properly when the valve is mounted with the actua tor upright on top apply the ones written upsid
17. en the reference variable decreases lt gt The valve travel decreases when the reference variable increases or the valve travel increases when the reference variable decreases Fail safe action AIR TO OPEN S4 ON Actuator stem extends OFF Fail safe action AIR TO CLOSE gt SA OFF Actuator stem retracts lt gt 5 6 Connecting the positioner Apply the supply air to the pneumatic con nection Supply 9 Make sure to use the ap propriate pressure as specified in section 3 1 2 Apply the electric reference variable amme ter at terminals 11 and 12 Caution Upon connection of the electric refe rence variable the signal pressure may cause the plug stem to move risk of injury Start up and settings 5 7 limiting the output signal pressure Set switch S5 to ON to limit the output sig nal pressure to 2 4 bar if required by the actuator 5 8 Presetting zero Set SPAN adjuster to O For fail safe action Actuator stem ex tends AIR TO OPEN Adjust the input signal to 4 mA using an ammeter Turn ZERO adjuster until the plug stem just starts to move from its initial position For fail safe action Actuator stem retracts AIR TO CLOSE Adjust the input signal to 20 mA using an ammeter Turn ZERO adjuster until the plug stem just starts to move from its initial position 5 9 Gain factor When the control response is unstable set switch 6
18. ers and Type 3271 with 1400 7455 1400 cm2 Actuators from other manufacturers and Type 3271 with rn A 2800 cm2 120 mm travel 1290 7495 30 or 60 L Type 3271 Actuator with 2800 cm and 30 or 60 mm travel 1400 7466 Mounting brackets for Emerson and Masoneilan linear actuators 1400 6771 In addition a mounting kit acc to IEC 60534 6 is required depending on the travel See row above Accessories Connecting plate 1400 7461 1 4 NPT 1400 7462 or pressure gauge bracket 7 1400 7458 1 4 NPT 1400 7459 Pressure gauge mounting kit output supply St steel Brass 1400 6950 St steel St steel 1400 6951 Table 4 General accessories Accessories Pneumatic reversing amplifier for double acting G 1 4 1079 1118 actuators Va NPT 1079 1119 Cable gland M20 x 1 5 Nickel plated brass 1890 4875 Adapter M 20 x 1 5 to 1 2 NPT aluminum 0310 2149 Sons German English standard 1990 3528 ss dici with js parameters English Sponish 1990 5769 u Sua English French 1990 5768 8384 0EN 9 Attachment to the control valve Mounting parts and accessories 2 1 Direct attachment 2 1 1 Type 3277 5 Actuator Refer to Table 1 on page 8 for the required mounting parts as well as the accessories with their order numbers Note the travel table on page 7 Actuator with 120 cm2 Depending on the type of positioner attach ment the signal pres
19. esetting travel 24 Direclipix al acon sam eee 25 Connecting the 25 Limiting the output signal pressure 25 Presetlingizel XR ER hE SOEUR 25 P eee to Geb od ORE ee eS SS 25 Reference variable 26 Adjusting zero 26 Adapting the 27 Activate the tight closing function 27 Maintenance lt oss fie iu 28 Servicing explosion protected 5 28 Dimensions 29 Safety instructions General safety instructions The positioner may only be assembled started up or operated by trained and experienced personnel familiar with the product According to these mounting and operating instructions trained personnel is referred to as individuals who are able to judge the work they are assigned to and recognize possible dangers due to their specialized training their knowledge and experience as well as their knowledge of the relevant standards Explosion protected versions of this positioner may only be operated by personnel who have undergone special training or instructions or who are authorized to work on explosion protected devices in hazardous areas Refer to section 7 on Servicing explosion protected versions Any hazards that could be caused by
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21. gauge bracket 8 Pressure gauge mounting kit 10 Bracket Important Always use the connecting plate 6 included in the accessories to connect supply and output Never screw threaded parts directly into the housing Fig 7 Attachment to Type 3510 Micro flow Valve 8384 0 19 Connections 3 Connections 3 1 Pneumatic connections Caution The threads in the positioner housing are not designed for direct air connection The screw glands must be screwed into the connecting plate the pressure gauge mount ing block or the connection block from the accessories The air connections are option ally designed as a bore with 1 4 NPT or G 1 4 thread The customary fittings for metal and copper pipes or plastic hoses can be used Note The 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 tubes and hoses thor oughly prior to connecting them If the positioner is attached directly to the Type 3277 Actuator the connection of the positioner s output pressure to the actuator is fixed For attachment according to IEC 60534 6 NAMUR the signal pressure can be routed to either the top or bottom di aphragm chamber of the actuator depend ing on the actuator s fail safe action Actua tor stem extends or Actuator stem re tracts 20 8384 0 EN 3 1 1 Signal pressu
22. hment to Type 3277 Actuator Actuator size Rated travel Adjustment range at positioner Required Assigned Type cm mm Min Travel Max lever pin position 3277 5 120 7 5 5 3 20 M 25 3277 120 240 350 15 5 3 35 4 M 35 Actuators 700 30 95 50 M 50 Travel table for attachment according to IEC 60534 6 NAMUR SAMSON valves Other valves actuators Required Assigned i iti cm Rated travel mm Min Travel Max EN 60 and 120 with 3510 Valve 7 5 5 3 17 6 S 17 120 7 5 5 3 17 6 M 25 3271 120 240 350 15 7 5 354 M 35 Actuator 700 1400 2800 15 and 30 30 10 50 M 50 1400 2800 60 14 70 8 L 70 1400 2800 60 20 100 L 100 2800 120 40 200 XL 200 8384 0 EN 7 Attachment to the control valve Mounting parts and accessories Table 1 Direct attachment to Type 3277 5 Actuator Order no Mounting parts For actuators with 120 cm effective diaphragm area see Fig 3 1400 7452 Switchover plate old for Actuator Type 3277 5xxxxxx 00 old 1400 6819 Switchover plate new for Actuator Type3277 5xxxxxx 01 new 1400 6822 Accessories Connecting plate for additional attachment of a solenoid valve G 1 8 1400 6820 for the Connecting plate old for Actuator Type 3277 5xxxxxx 00 old 1 8 NPT 1400 6821 en Connecting plate new for Actuator Type 3277 5xxxxxx 01 new 1400 6823 Note Only new switchover and connecting plates can be
23. hnical regulations and the accident prevention regulations that apply in the country of use In Ger many these are the VDE regulations and the accident prevention regula tions of the employers liability insur ance association The following standards apply for assembly and installation in hazardous areas EN 60079 14 2003 VDE 0165 Part 1 8 98 Electrical apparatus for explosive gas atmospheres and EN 50281 1 2 1999 VDE 0165 Part 2 11 99 Electrical appa ratus for use in the presence of combustible dust For the interconnection of intrinsically safe electrical equipment the permissible maxi mum values specified in the EC type exami nation certificate apply or Ug 1 or lo P or Po C or Co and L or Lo The following applies for equipment with type of protection EEx nA non sparking ap paratus according to the standard EN 50021 1999 Connecting interrupting or switching circuits while energized is only al lowed during installation maintenance or repair work The following applies for equipment con nected to energy limited circuits with type of protection EEx nl energy limited apparatus according to the standard EN 50021 1999 This type of equipment may be switched under normal operating conditions 8384 0 21 Connections For the interconnection of equipment to ergy limited circuits with type of protection EEx the permissible maximum values specified in the state
24. itching point of 4 32 0 16 mA is not reached The actuator is vented and a globe valve is closed tightly by the force of the actuator springs In the case of a three way valve port B is closed in mixing valves and port A is closed in diverting valves Fail safe action Actuator stem retracts AIR TO CLOSE Activation when switching point of 19 68 0 16 mA is exceeded The actuator is filled with air and a globe valve is closed tightly by the signal pressure In three way valves port B mixing service is closed and port A diverting service is closed Design and principle of operation Control valve Travel sensor PD controller DIP switches i p converter Air capacity booster Pressure regulator Flow regulator Volume restriction Fig 2 Functional diagram EB 8384 0EN 5 Design and principle of operation 1 1 Technical data Positioner Nominal travel adjustable Direct attachment to Type 3277 5 3 to 30 mm Attachment acc to IEC 60534 6 5 3 to 200 mm Travel range Adjustable within the rated travel max ratio 1 5 Reference variable w Signal range 4 to 20 mA split range range 4 to 12 mA 12 to 20 mA selectable at DIP switches 2 wire device reverse polarity protection static destruction limit 100 mA Minimum current gt 3 6mA Load impedance Version without explosion protection
25. lt V corresponding to 300 Q at 20 mA explosion protected version lt 6 V Supply air Supply pressure from 1 4 to 6 bar 20 to 90 psi Air quality acc to ISO 8573 1 Max particle size and density Class 4 Oil content Class 3 pressure dew point Class 3 or at least 10 K below the lowest am bient temperature to be expected Signal pressure output 0 bar up to supply pressure can be limited to approx 2 4 bar over DIP switch Characteristic Linear Deviation from terminal based conformity lt 1 Hysteresis lt 1 Sensitivity 0 1 Direction of action Selectable over DIP switch Air consumption st state Independent of supply pressure approx 120 Air delivery Actuator pressurized Actuator vented At Ap gt 8 5 m 3 h at Ap 1 4 bar 3 0 m 3 h Kymox 20 0 09 at Ap bar lt 14 0 m 3 h at Ap 1 4 bar 4 5 m 3 h Kymax 20 0 1 Permissible ambient temperature 20 to 80 C with metal cable gland 40 to 80 C The limits specified in the EC Type Examination Certificate additionally apply for explosion protected devices Influences Temperature 0 15 10 Supply air None Vibration lt 0 25 up to 2000 Hz and 4 g acc to IEC 770 Electromagnetic compatibility Complying with requirements specified in EN 61000 6 2 EN 61000 6 3 and NAMUR Recommendation NE 21 Explosion protection Il 2 G EEx ia IIC T 12 D IP 65 T 80 C
26. ment of conformity or the addenda to the statement of conformity apply Caution The terminal assignment specified in the cer tificate must be adhered to Reversing the assignment of the electrical terminals may cause the explosion protec tion to become ineffective Do not tamper with enameled screws inside or on the housing Cable entries left unused must be sealed with blanking plugs Devices used at ambient temperatures below 20 C must have metal cable entries The wires for the reference variable must be connected to the terminals 11 and 12 lo cated in the housing In general it is not necessary to connect the positioner to a bonding conductor Should this be required however this conductor can be connected inside the device Input control signal Fig 8 Electrical connection 22 8384 0 EN Note The minimum permissible reference variable should not fall below 3 6 mA Accessories Plastic cable gland M20 x 1 5 Black Order no 1400 6985 Blue Order no 1400 6986 Nickel plated brass Order no 1890 4875 Adapter M20 x 1 5 to Vo NPT Aluminum powder coated Order no 0310 2149 Operation 4 Operation ZERO and SPAN adjusters The ZERO and SPAN potentiometers are 4 1 Operator controls used to adjust the starting point zero and the upper range value span of the refer DIP switches 51 to 10 ence variable The positioner is mainly operated via the DIP volum
27. ment to the control valve Mounting parts and accessories 2 4 Attachment to 3510 Micro flow Valve The positioner is attached to the valve yoke using a bracket Refer to Table 3 on page 9 for the required mounting parts as well as the accessories with their order numbers Note the travel table on page 7 1 Place clamp 3 on the valve stem con nector align at a right angle and screw tight 2 Screw bracket 10 to the valve yoke us ing two screws 11 3 Mount connecting plate 6 or pressure gauge bracket 7 with pressure gauges to the positioner making sure both seal rings 6 1 are seated properly 4 Unscrew the standard installed lever M 1 including follower pin 2 from the positioner shaft 5 Take lever S 1 and screw follower pin 2 in the bore for pin position 17 6 Place lever on the positioner shaft and screw tight using the disk spring 1 2 and nut 1 1 Move lever once all the way as far as it will go in both directions 7 Place positioner on the bracket 10 in such a manner that the follower pin slides into the groove of the clamp 3 Adjust the lever 1 correspondingly Screw the positioner to the bracket 10 using both its hexagon screws 18 8384 0 EN Attachment to the control valve Mounting parts and accessories 1 Lever 11 Nut 1 2 Disk spring 2 Follower pin 3 Clamp 6 Connecting plate 6 1 Seal rings 7 Pressure
28. n position 35 with the standard in stalled lever M or require a lever size L or XL proceed as follows 5 Screw the follower pin 2 in the as signed lever bore pin position as listed in the table Only use the longer follower pin 2 included in the mounting kit 6 Place lever 1 on the positioner shaft and screw tight using the disk spring 1 2 and nut 1 1 Note If you have mounted a new lever 1 you must move it once all the way as far as it will go in both directions 7 Place positioner on the NAMUR bracket in such a manner that the follower pin 2 rests in the slot of the follower plate 3 3 1 Adjust the lever 1 correspond ingly Screw the positioner to the NAMUR bracket using both its fixing screws Attachment to the control valve Mounting parts and accessories Attachment to rod type yoke Rods with max 35 mm N Attachment to NAMUR rib 58 5 3 1 1 Additional bracket for actuators with 2800 cm BEN S and travel 2 60 mm i Vw 14 1 Lever Lever XL and L 1 1 Nut 1 2 Disk spring 2 Follower pin 3 Follower plate 3 1 Follower plate 6 Connecting plate 6 1 Seal rings 7 Pressure gauge bracket 8 Pressure gauge mounting kit 9 Stem connector 9 1 Bracket 10 NAMUR bracket ll Screw 14 14 1 Scre
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30. oner is attached to the control valve with a NAMUR bracket 10 Refer to Table 3 on page 9 for the required mounting parts as well as the accessories with their order numbers Note the travel table on page 7 1 Screw the two bolts 14 to the bracket 9 1 of the stem connector 9 place the follower plate 3 on top and use the screws 14 1 to tighten Actuator size 2800 cm2 For a travel of 60 mm or smaller screw the longer follower plate 3 1 directly to the stem connector 9 For a travel exceeding 60 mm mount the bracket 16 first and then the follower plate 3 to the bracket to gether with the bolts 14 and screws 14 1 2 Mount NAMUR bracket 10 to the con trol valve as follows For attachment to the NAMUR rib use an M8 screw 11 and toothed lock washer directly in the yoke bore For attachment to valves with rod type yokes use two U bolts 15 around the yoke Align the NAMUR bracket 10 accord ing to the embossed scale so that the slot of the follower plate 3 is centrally aligned with the NAMUR bracket at mid valve travel 14 EB 8384 0 EN 3 Mount connecting plate 6 or pressure gauge bracket 7 with pressure gauges 8 on the positioner making sure both seal rings 6 1 are seated properly A Select required lever size 1 M L or XL and pin position according to the actua tor size and valve travels listed at the bottom of the table Should you require a pin position other tha
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32. re gauges To monitor the supply air Supply and sig nal pressure Output we recommend that pressure gauges be attached see accesso ries in Tables 1 to 4 3 1 2 Supply pressure The required supply air pressure depends on the bench range and the actuator s oper ating direction fail safe action The bench range is registered on the nameplate either as spring range or signal pressure range The direction of action is marked FA or FE or by a symbol Actuator stem extends FA Air to open ATO Fail safe position Valve Closed for globe and angle valves Required supply pressure Upper bench range value 0 2 bar minimum 1 4 bar Actuator stem retracts FE Air to close ATC Fail safe position Valve Open for globe and angle valves For tight closing valves the maximum signal pressure pstmax is roughly estimated as fol lows d x Ap pstmox F 4 A d Seat diameter cm Ap Differential pressure across the valve bar A Actuator diaphragm oreo cm2 Upper bench range of the actuator bar If there are no specifications calculate as follows Required supply pressure Upper bench range value 1 bar Note The signal pressure at the output Out put 38 of the positioner can be limited to approx 2 4 bar by setting the DIP switch 55 Connections 3 2 Electrical connections For electrical installation you are re quired to observe the relevant electrotec
33. reholes Ai and Z 16 8384 0 EN Note The sealing plug 1 5 should not be un screwed out of the reversing amplifier The rubber seal 1 4 is not required and can be removed when the sealing plug is used Signal pressure connections Output A1 leading to the signal pressure connection at the actuator which opens the valve when the pressure increases Aa Output A2 leading to the signal pressure connection at the actuator which closes the valve when the pressure increases Position the DIP switch 1 according to the symbols AIR TO OPEN or AIR TO CLOSE as described in section 5 2 Attachment to the control valve Mounting parts and accessories From the positioner Output 38 Supply 9 Control signals to the actuator A2 1 3 14 12 14 1 5 1 6 1 Reversing amplifier 6 Connecting ring 1 1 Special screws 6 1 O rings 1 2 Gasket 6 2 Screws 1 3 Special nuts 1 4 Rubber seal 1 5 Sealing plug Fig 6 Mounting a reversing amplifier a UN 1 6 Filter lt A r3 TO aj tty 2 U a f 2 je H Ay A t Sr x E 1 3 12 1 1 1 1 6 EB 8384 0 17 Attach
34. sically consists of a travel sensor system which is proportional to resis tance an analog i p converter with down stream air capacity booster and an analog controller electronics The position of the valve is transmitted as linear travel motion via pick up lever and travel sensor 2 to an analog PD controller 3 The PD controller compares this actual position to the 4 to 20 mA DC control signal received from a control unit In case of a system deviation the operation of the i p converter 6 is changed so that the actuator 1 is filled or vented via the downstream air capacity booster 7 This causes the valve plug to move to the position determined by the reference variable The pneumatic air capacity booster 7 and the pressure regulator 8 are provided with supply air An intermediate flow regulator 9 with fixed settings is used to purge the positioner and also guarantees trouble free operation of the pneumatic booster EB8384 0 EN The output signal pressure supplied by the booster can be limited over the DIP switch S5 The volume restriction Q 10 and the switch S are used to optimize the positioner by adapting it to the actuator size and chang ing the gain factor Tight closing function The pneumatic actuator is completely filled with air or vented as soon as the reference variable falls below or exceeds a preset value Fail safe action Actuator stem extends AIR TO OPEN Deactivation when sw
35. sure is routed either left or right of the yoke through a bore to the actuator diaphragm Depending on the fail safe action of the actuator Actuator stem extends or Actuator stem retracts valve closes or opens if the supply air fails the switchover plate 9 must first be at tached to the actuator yoke Align the switchover plate with the corresponding symbol for left or right attachment according to the marking view looking onto the switchover plate 1 Mount connecting plate 6 or pressure gauge bracket 7 with pressure gauges onto the positioner making sure both seal rings 6 1 are seated properly 2 Remove vent plug 4 on the back of the positioner and close the signal pressure output Output 38 on the connecting plate 6 or on the pressure gauge bracket 7 with the stopper 5 included in the accessories 3 Place follower clamp 3 on the actuator stem align and screw tight so that the mounting screw is located in the groove of the actuator stem 10 EB 8384 0 EN 4 Mount cover plate 10 with narrow side of the cut out opening Fig 3 on the left pointing towards the signal pressure connection Make sure that the bonded gasket 14 points towards the actuator yoke 5 15 mm travel Keep the follower pin 2 at lever M 1 on the back of the positioner in the pin position 35 deliv ered state 7 5 mm travel Remove the follower pin 2 from the pin position 35 reposition it in the bore for pin posi
36. tends AIR TO OPEN Starting point e g 4 mA Adjust the input signal to 4 mA using an ammeter Turn ZERO adjuster until the plug stem just starts to move from its closed posi tion 100 100 lt gt lt lt OPEN OPEN Travel Travel CLOSED CLOSED Valve 1 Valve 2 0 0 4 12 20 Reference variable Dead band nput signal Fig 10 Standard and split range operation 26 8384 0 EN Start up and settings Interrupt input signal and slowly reapply 5 12 Adapting the travel it Check whether the plug stem starts to move at 4 0 mA In case the rated travel of the control volve does not correspond with the selected travel Correct deviation at the ZERO adjuster according to the table in section 5 4 Adjust the upper range value of the input For Actuator stem retracts AIR TO signal e g 4 12 or 20 mA using the CLOSE ammeter Starting point e g 20 mA Turn the SPAN adjuster until the plug Adjust the input signal to 20 mA using stem comes to a stop in its end position an ammeter Turn ZERO adjuster until plug stem 5 13 Activate the tight closing just starts to move from its closed posi function tion Increase the input signal and slowly de Having adjusted zero and span the crease it back to 20 mA tight closing function description on Check whether the plug stem starts to page 4 must be activated at switches 9 move qt
37. the cor responding actuator symbol points to the marking 7 Place the connection block 12 with the associated seal rings against the positioner and the actuator yoke Screw it tight using the fixing screw 12 1 For actuators with fail safe action Actuator stem retracts additionally remove the stopper 12 2 and fit on the external signal pressure piping 8 Mount cover 11 on the other side Make sure that the vent plug points downwards when the control valve is in stalled to allow any condensed water that collects to drain off Attachment to the control valve Mounting parts and accessories 1 Lever 12 1 1 1 Nut 12 2 1 2 Disk spring 2 Follower pin 13 3 Follower clamp 14 10 Cover plate 15 11 Cover 16 12 Connection block S Actuator stem retracts extends Screw Stopper or connection for external piping Switch plate Gasket Formed sea Gasket 15 1014 3 1 FH 16 Connection block old 13 with switch plate 13 Actuator stem retracts Actuator stem extends Marking Fig 4 Direct attachment Signal pressure connection for Type 3277 Actuator with 240 350 and 700 cm 8384 0 13 Attachment to the control valve Mounting parts and accessories 2 2 Attachment according to IEC 60534 6 The positi
38. the process medium the operating pressure the signal pressure or by moving parts of the control valve are to be prevented by means of the appropriate measures If inadmissible motions or forces are produced in the actuator as a result of the supply pressure level it must be restricted by means of a suitable supply pressure reducing station Proper shipping and appropriate storage are assumed Note The device with a CE marking fulfils the requirements of the Directives 94 9 EC ATEX and 89 336 EEC EMC The declaration of conformity can be viewed and downloaded on the Internet at http www samson de Positioner versions 3730 0 X Explosion Without protection ll 2 G EEx ia IIC T6 Il 2 D IP 65 T 80 C acc to ATEX amp I 3 G EEx nA nL IIC T6 II 3 D IP 65 T 80 C acc to ATEX 0 1 8 8384 0EN 3 Design and principle of operation 1 Design and principle of operation The electropneumatic positioner is mounted to pneumatic control valves and is used to assign the valve position controlled vari able x the control signal reference vari able w The DC control signal received from a control unit is compared to the travel of the control valve and issues a signal pres sure output variable y The positioner is designed depending on the corresponding accessories for direct attach ment to Type 3277 Actuators or for attach ment to actuators according to IEC 60534 6 NAMUR The positioner ba
39. tion 25 and screw tight 6 Insert formed seal 15 in the groove of the positioner casing 7 Place positioner on the cover plate 10 in such a manner that the follower pin 2 rests on the top of the follower clamp 3 Adjust the lever 1 correspondingly and open the positioner cover to hold the positioner shaft in position at the cap or the switch The lever 1 must rest on the follower clamp with spring force Mount the positioner on the cover plate 10 using the two fixing screws During the installation make sure that the seal ring 10 1 is inserted in the bore of the intermediate plate 8 Mount cover 11 on the other side Make sure that the vent plug points downwards when the control valve is in stalled to allow any condensed water that collects to drain off Attachment to the control valve Mounting parts and accessories Symbols Switchover plate 9 Actuator stem 5 21 extends D v v Attachment left Attachment right Actuator stem D Y retracts v Signal pressure input for left Signal pressure attachment Marking input for right II attachment a 1 1 1 2 3 4 5 6 6 1 7 8 9 10 10 1 Lever Nut Disk spring Follower pin Follower clamp Vent plug Stopper Connecting plate Seal rings Pressure gauge bracket Press gauge mounting kit Switchover plate f actuator Cover plate Seal ring Cover
40. used with new actuators Index 01 Old and new plates are not interchangeable Connecting plate 6 1400 7461 1 4 NPT 1400 7462 Accessories or pressure gauge bracket 7 G 1 4 1400 7458 1 4 NPT 1400 7459 for the positioner Pressure gauge mounting kit 8 output and Stainless steel Brass Stainless steel St steel supply 1400 6950 1400 6951 Table 2 Direct attachment to Type 3277 Actuator Mounting parts for actuators with 240 350 and 700 cm see Fig 4 1400 7453 A ome n 2 Steel Stainl steel ean ina wih wren r Ach 350 1400 6446 1400 6447 Accessories namber is tiled with air 700 1400 6448 1400 6449 Connection block with seals and screw G 1 4 1400 8811 1 4 NPT 1400 8812 Pressure gauge mounting kit output and supply Stainless steel Brass 1400 6950 Stainl steel St steel 1400 6951 8 EB8384 0 EN Attachment to the control valve Mounting parts and accessories Attachment to NAMUR ribs or control valves with rod type yokes rod diameter 35 mm or smaller according Wo EC 608926 eig 5 Travel in mm Lever For actuators Order no 75 3271 5 Actuator with 60 120 cm on Type 3510 1400 7457 Valve see Fig 7 5 to 50 Without lever M on Actuators from other manufacturers and Type 3271 with 120 1400 7454 basic model to 700 cm2 14 to 100 L Actuators from other manufactur
41. ver plate 10 with narrow side of the cut out opening Fig 4 on the left pointing towards the signal pressure connection Make sure that the bonded gasket 14 points towards the actuator yoke 3 For actuators with 700 cm2 remove the follower pin 2 at lever M 1 on the back of the positioner from pin position 35 reposition it in the bore for pin posi tion 50 and screw tight For actuators 240 and 350 cm with 15 mm travel the follower pin 2 re mains in pin position 35 4 Insert formed seal 15 in the groove of the positioner casing 12 EB 8384 0 EN 5 Place positioner on the cover plate in such a manner that the follower pin 2 rests on the top of the follower clamp 3 Adjust the lever 1 correspondingly and open the positioner cover to hold the positioner shaft in position at the cap or the switch The lever 1 must rest on the follower clamp with spring force Mount the positioner on the cover plate 10 using the two fixing screws 6 Make sure that the tip of the gasket 16 projecting from the side of the connec tion block 12 is positioned above the actuator symbol that corresponds with the actuator with fail safe action Actua tor stem extends or Actuator stem re tracts If necessary remove the three fixing screws and the cover Then repo sition the gasket 16 turned by 180 The previous version of the connection block Fig 4 bottom requires the switch plate 13 to be turned such that
42. w Important 15 U bolt Always use the connecting plate 6 included in the accessories to T Bracket connect supply and output Never screw threaded parts directly into Fig 5 Attachment according to IEC 60534 6 NAMUR EB 8384 0 15 Attachment to the control valve Mounting parts and accessories 2 3 Reversing amplifier for double acting actuators For the use with double acting actuators the positioner must be fitted with a reversing amplifier The reversing amplifier is listed as an accessory in the Table 4 on page 9 The output signal pressure of the positioner is supplied at the output A of the reversing amplifier An opposing pressure which equals the required supply pressure when added to the pressure at is applied at output 2 The rule A1 A2 Z applies Mounting 1 Mount the connecting plate 6 from the accessories in Table 4 to the positioner Make sure that both O rings 6 1 are seated correctly 2 Thread the special nuts 1 3 from the accessories of the reversing amplifier into the boreholes of the connecting plate 3 Insert the gasket 1 2 into the recess of the reversing amplifier and push both the special hollow screws 1 1 into the connecting boreholes A and Z 4 Place the reversing amplifier onto the connecting plate 6 and screw tight us ing both the special screws 1 1 5 Use a screwdriver 8 mm wide to screw the enclosed filters 1 6 into the con necting bo
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