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Valve Positioner

Valve Positioner
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Valve Positioner

Product catalog summary
General Information
The SP400/405 is a pneumatic valve positioner designed for input signals of 20–100 kPa (3–15 psi), featuring an exchangeable cam disc for different valve characteristics and split ranges. The SPE400/405 is an electropneumatic version with an I/P-converter. Both models are adaptable to various valve types with a rotation of 60°–90°.
Function
The SP400/405 uses a pneumatic control signal to adjust the diaphragm and balance arm, controlling the pilot valve. The SPE400/405 uses an I/P-converter to convert electric signals to pneumatic signals.
Installation
Ensure the positioner is undamaged and connect clean, dry air at 4–8 bar (60–120 psi). All connections are G 1/4˝ female thread. Adjust zero-point and range using specified screws.
Maintenance
The positioner requires minimal maintenance. Ensure supply air is clean and at constant pressure. Clean the pilot valve and replace filters as needed. Specific instructions are provided for cleaning and replacing components.
Replacement of Cam Disc
Cam discs can be replaced to accommodate different signal ranges and valve characteristics. Follow detailed steps for replacement and adjustment.
Change-over Function
To switch from direct to reverse action, adjust the cam disc and connections as specified.
Spare Parts
Lists of spare parts for both SP400/405 and I/P-converter E400 are provided, including recommended parts for maintenance and replacement.
Technical Specifications
Specifications include details on screws made of brass, nickel-plated, and stainless steel, adhering to ISO standards. Control signal specifications are provided for standard and split range signals, with air consumption and capacity details at specified supply pressures. Other specifications include maximum voltage drop, cam disc references, connection types, supply pressure range, ambient temperature range, hysteresis, repeatability, input resistance, weight, and protection class.
Material Specifications
Materials used include aluminium, polycarbonate, stainless steel, chromated steel, silicone rubber, and nitrile. Specific parts such as the housing, cover, balance arm, feedback arm, cam disc, feedback spring, pilot valve, and diaphragm are detailed with their respective materials.
Spare Parts List
A comprehensive list of spare parts for the pneumatic type SP405 VIB is provided, including item numbers, descriptions, and materials. Key components include housing, screws, diaphragm cover, locking rings, adjustment screws, washers, ball bearings, O-rings, bushings, shafts, and various other parts. Recommended spare parts kits and complete assemblies are also listed with their respective article numbers.
Contact Information
Contact details for SOMAS are provided, including their address in Säffle, Sweden, phone and fax numbers, and email address. It also notes that SOMAS reserves the right to make improvements without prior notice.
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Catalog excerpts

Valve Positioner-1

General information SP400/405 2Function SP400/405 2 General information SPE400/405 3 Function SPE400/405 3 Installation 4 Zero-point and range adjustment 4 Maintenance 5 Replacement of cam disc 6 Table cam discs 6 Change-over function 7 Spare parts list SP400/405 8 Detailed drawing SP400/405 9 Spare parts list I/P-converter E400 10 Detailed drawing I/P-converter E400 11 Technical speci cation 12Material speci cation 12 >

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Valve Positioner-2

General SP400/405 is a pneumatic valve positioner for an input signal of 20100 kPa (3֖15 psi). The easily exchange- able cam disc is available in various types for diffe- rent valve characteristics, opening angles, as well as for split range 2060 or 60֖100 kPa (39 or 9֖15 psi). See table on page 6.The positioner is mainly designed to fit the SOMAS range of valves and actuators but can easily be adap- ted to other valve types with a rotation of 60Ж90.A yellow indicator under the transparent cover in-dicates the opening angle of the valve. The indicator shows open valve when parallel to the pipeline....

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Valve Positioner-3

General The electropneumatic valve positioner type SPE400/405 is built on a concept where the pneumatic version type SP400/405 is completed with an I/P-con- verter.This I/P-converter is located in a separate housing, attached to the pneumatic version SP400/405. Zero-point and range adjustments are done on the pneumatic side. See page 4. > Function The function of the SPE400/405 is identical to that of the SP400/405. The difference is that the pneumatic input signal comes from the attached I/P-converter.The function of the I/P-converter is as follows: When the electric input signal increases or...

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Valve Positioner-4

Make sure the positioner has not been damaged during transportation or installation.֖ NOTE! The supply air must be clean and dry instru- ment air and have a constant pressure within the range of 48 bar (60֖120 psi). Connect the supply air to connection marked ֓SUPPLY.Ԗ All pneumatic connections are G 1/4, female thread. Connect air signal to actuator at connections marked ֓A and ԓB. > 1. At initial position (closed valve), make sure that there is a clearance of about 0.5 mm between the ball bearing (16) and the cam disc (32) at an input signal of 20 kPa (3 psi). 2. To adjust the basic position...

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Valve Positioner-5

The positioner is in principle maintenance-free.The supply air for positioners must be mechanically clean and free from oil and water and have a constant pressure. Faulty operation is mostly due to contamina- tion of the supply air. The supply air must have a con- stant pressure within the range of 4-6 bar (60-90 psi). > Cleaning of pilot valve 1. Loosen the screws (39) and carefully remove the pilot valve. Remove the screw (74) that keeps the pilot valve together.2. Handle the components with care and pull out the slide (40). Wash housing and slide with solvent and blow clean.3. Remove the filter...

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Valve Positioner-6

6 Replacement of cam disc > A number of different cam discs are available to cover various signal ranges, angles of rotation and valve characteristics. See table below.Replacement of cam disc is done as follows: 1. Remove the cover (5) and the indicator (10). Note the correct positions for these two details.2. Loosen the screw (33) and remove the cam disc (32). 3. Put in a new cam disc and tighten. 4. Make zero-point and range adjustment. See page 4. 5. Put back the indicator and the cover.For cam discs type split range, proceed as follows:1. Remove the cover (5) and the indicator (10). Note...

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Valve Positioner-7

7 Change-over function > If not particularly specified, the positioner is moun-ted to the actuator and connected for direct action. I.e. increased input signal opens the valve, AO.For change-over to reverse function, AC, proceed as follows:1. Remove the cover (5) and the indicator (10). 2. Loosen the screws (33 + 73). 3. Remove the cam disc (32). 4. Lift up the plate (8). 5. Turn the plate (8) and put it back according to the figures below.6. Re-assemble the cam disc in upside down position. (The cam disc will now have a rising slope at clock- wise rotation).7. Change connections to the actuator....

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Valve Positioner-8

61a Key, SP400, SS 2350 61b Driver, SP405, SS2331-43 62 Diaphragm, Hypalone CSM1 63 Screw, M5x10, Steel, Z.Pl., SS-ISO 1580 64 Washer, dia. 5x16, Steel, Z.Pl. 66 Screw, M5x6, Brass, Nickel Pl. 68 Rivet, 2.5x9, Steel, DIN 660 69 Washer, 8.4x16x1.5, Steel, Z.Pl. 72 O-ring, dia. 4.1x1.6, Nitrile 73 Screw, M5x8, Steel, Z.Pl., SS-ISO 1580 74 Screw, M3x10, Steel, Z.Pl., SS-ISO 2009 75 Washer, dia. 5.3x10, Nylon, DIN 125 76 Nut, M4, Steel, Z.Pl., SS-ISO 4032 77 Silencer 78 Elastic pin, dia. 2.5x10, Stainless steel > Item No. Description 1 Housing, Aluminium, SP400 Housing, Aluminium, SP405 2 Screw,...

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Valve Positioner-10

Item No. Description 101 Housing, Aluminium 102 Cover, Polycarbonate 103 Block, Aluminium 104 Relay angle, Wacoperm 100 106 Flapper, Wacoperm 100 107 Adapter, Aluminium 108 Tube, Copper 109 Counter weight, Brass 110 Plate spring, Brass 113 Nozzle, Delrin 114 Holder for nozzle, Delrin 115 Bracket, Brass 117 Relay coil 118 Printed circuit card 119 Terminal board 120 Zero spring, Stainless steel 121 Nut, M6, Brass, Nickel Pl., SS-ISO 4032 122 Screw, M4x8, Brass, Nickel Pl., SS-ISO 1207 123 Screw, M3x40, Brass, Nickel Pl., SS-ISO 1207 124 Screw, M3x3, Stainless steel, SS-ISO 1207 125 Screw, M5x10,...

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Valve Positioner-12

Control signal : Standard 20-100 kPa 4 - 20 mA Split range 20-60 kPa 4 - 12 mA 60-100 kPa 12 - 20 mA Air consumption : max 10 Nl/min. max 15 Nl/min. (at balance and 6 bar supply pressure) Air capacity : 450 Nl/min. approx. 450 Nl/min. approx. (at 6 bar supply pressure) Max voltage drop : ח 8.6 V at 20mA Cam discs : See table, page 6 Connections : G 1/4 (BSP) G 1/4Ԕ (BSP) Supply pressure : 4-8 bar 4-8 bar Ambient temperature : -40 to +100аC -40 to +100аC Hysteresis : 0.5 % 1 ѱ 0.5 % Repeatability : < 0.5 % 1 < 0.5 % ٹ Input resistance : ח 430 Ohm Weight : 1.5 kg 2.3 kg Supply air : Dry and clean...

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Valve Positioner-13

61a Key, SP400, SS 2350 61b Driver, SP405, SS2331-43 62 Diaphragm, Hypalone CSM1 63 Screw, M5x10, Steel, Z.Pl., SS-ISO 1580 64 Washer, dia. 5x16, Steel, Z.Pl. 66 Screw, M5x6, Brass, Nickel Pl. 68 Rivet, 2.5x9, Steel, DIN 660 69 Washer, 8.4x16x1.5, Steel, Z.Pl. 73 Screw, M5x8, Steel, Z.Pl., SS-ISO 1580 74 Screw, M3x10, Steel, Z.Pl., SS-ISO 2009 75 Washer, dia. 5.3x10, Nylon, DIN 125 76 Nut, M4, Steel, Z.Pl., SS-ISO 4032 78 Elastic pin, dia. 2.5x10, Stainless steel > Item No. Description 1 Housing, Aluminium, SP405 > 1 2 Screw, M5x10, Brass, Nickel Pl. SS-ISO 1580 3 Diaphragm cover, Aluminium 4...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.