SMART VALVE POSITIONER to ma + HART Digital Communication B87
DESCRIPTION The FY microprocessor based positioner provides fast and accurate positioning of diaphragm or cylinder actuators. The FY produces a pressure output as required to position a control valve according to a to ma input signal supplied by a controller. The FY is compact and easy to maintain and adjust. Remote communication based on the HART protocol enables an easy interface between the field and the control room and several interesting features that considerably reduce installation, operation and maintenance costs. The FY is part of Smar s complete series of t devices. Local calibration and parameter setting may also be done without external devices. Reliable and Flexible Elimination of many mechanical parts seen in other positioners has a number of advantages. Higher reliability since there are less parts that wear, safer since there are less moving parts, more accurate since there is less deadband from mechanical imprecision. Position sensing is done without any mechanical contact virtually eliminating wear and tear and subsequent degradation. FY directly senses longitudinal or rotary movement based on the Hall effect. Valve characteristics, action, damping, etc. are altered in software instead of changing mechanical cam and spring. Changing damping, action or characteristics between linear, equal percentage, hyperbolic (quick opening) makes the FY extremely flexible. Compact and modular design. Low air consumption. Easy installation. Direct non-contact position sensing. Operate with rotary or linear motion, single or double acting pneumatic actuators. Easy adjustment and parameter settings with remote HART communication or local adjustment and display Weather proof, explosion proof and intrinsically safe. Flow Characteristics change with software cams. B88
OPERATION Output Module The main parts of the output module are the pilot, servo, Hall Effect sensor and the output control circuit. The FY CPU produces an electronic setpoint signal for the control circuit. The control circuit receives an actual valve position feedback signal from a Hall Effect sensor. The pneumatic part is based on the well known and widely used pilot tube and spool valve technology. A piezoelectric disk is used as flapper in the pilot stage. The flapper is deflected when a voltage is applied by the control circuit. If a change in position is demanded, the flapper deflects. A small stream of air flowing through the nozzle is changed, causing a change in pressure in the pilot chamber. This is called the pilot pressure. For a certain section used for the operation, the pilot pressure response is linear with the flapper deflection. The pilot pressure is far too low, and has no flow capacity and must therefore be boosted. This is done in the servo section, which acts as a transducer. The servo section has one diaphragm on the pilot chamber side, and another smaller diaphragm on the spool chamber side. The pilot pressure applies a force to the pilot side diaphragm which at steady state will be equal to the force that the spool valve applies on the smaller diaphragm. On-Board Parameters Convenient remote communication with HHT also allows easy configuration. Local adjustment allows operator easy calibration and parameter setting without external devices. Calibration of the open and close position of the actuator is automatic. If another position is required the fine calibration of zero point and travel is possible using a hand held terminal or a magnetic tool. Gain and travel time are adjustable allowing optimization for the process conditions. FY has combined all these functions in a single unit: Direct or reverse action. Single or double acting actuators. Linear and rotary motion actuators. Split range. Flow characterization: - Linear. - Equal percentage :5 - :5. - Hyperbolic :5 - :5. - 6 freely selectable points. When a change in position is demanded, pilot pressure increases or decreases as explained for the pilot stage. A change in pilot pressure forces the spool valve up or down changing the output and output pressures until the desired position is reached. The mounting set for rotary actuators complies with VDI/VDE 85. Rotary Magnet FLOW RESTRICTION PIEO FLAPPER NOLE PILOT DIAPHRAGM PILOT CHAMBER The mounting set for linear actuators complies with IEC5-6 (NAMUR). SPOOL DIAPHRAGM AIR SUPPLY SPOOL VENT OUTPUT OUTPUT VENT ø...5 (.79...8) CLAMPS Linear Magnet 65 (.56) SPRING B89
TECHNICAL CHARACTERISTICS Functional Specifications Travel Linear Motion: - mm. Rotary Motion: - Rotation Angle. Extended Linear Motion: - mm. Input Signal - ma, -wire. Power Supplied by the - ma current. No external supply required. Voltage drop Vdc max / ma (equivalent to 55 ). Minimum current.8 ma. Communication Protocol HART (is superimposed on the current signal). Reverse Polarity Protection No damage occurs from reversal of normal supply current (- ma) or from misapplication of up 5 ma. Output Output to actuator % supply air pressure. Single or double-action. Pressure Supply. - 7 bar (- psi). Free of oil, dust and water. Indication ½-digit LCD indicator. Hazardous Location Certification Explosion proof, weather proof and intrinsically safe from CEPEL, FM, CSA, NEMKO and DMT (pending). Temperature Limits Operation: - to 85 C (- to 85 F). Storage: - to 9 C (- to 9 F). Display: - to 6 C ( to F) operation. - to 85 C (- to 85 F) without damage. Humidity Limits to % RH. Flow Characterization Linear, Equal Percentage, Quick Opening, 6 freely selectable points. Gain Through software. Locally adjustable. Performance Specifications Sensitivity.% F.S. Repeatibility.% F.S. Hysteresis.% F.S. Consumption.5 Nm/h³ (.5 SCFM) at. bar ( psi) supply..7 Nm/h³ (. SCFM) at 5.6 bar (8 psi) supply. Output Capacity 6.7 Nm/h³ (8 SCFM) at 5.6 bar (8 psi) supply. Ambient Temperature Effect.8%/ C of span. Supply Pressure Effect Negligible. Vibration Effect ±. % /g of span during the following conditions: 5-5 Hz at mm constant displacement. 5-5 Hz at g. 5- Hz at g. Reference SAMA PMC. 98, Sec. 5., Condition, Steady State. Electro-Magnet Interference Effect Designed to comply with IEC 8 and European Standards EN58 and EN58. Physical Specifications Electrical Connection ½ - NPT, Pg,5 or M x,5. Pneumatic Connections Supply and output: ¼ -8 NPT. Gage: /8-7 NPT. Material of Construction Injected low copper aluminum with polyester painting or 6 Stainless Steel housing, with Buna N O-Rings on cover (NEMA X, IP 67). Weight Without display and mounting bracket:.7 kg. Add for digital display:.kg. Hart is a trademark of HART Communication Foundation. Travel Time Through software. Locally adjustable. Actual Position Sensing Magnet (Non-contact). Hall Effect. B9
ORDERING MODEL FY SMART VALVE POSITIONER - to ma + HART Digital Communication Local Indicator Without Digital Indicator With Digital Indicator Mounting Bracket Without Bracket With Bracket A B Electrical Connections ½ - NPT M X,5 Pg,5 DIN 5 6 7 8 Type of Actuator (Not Included) Rotary-Single Action Rotary Double Action Linear Stroke Up to 5 mm - Single Action Linear Stroke Up to 5 mm - Double Action Linear Stroke Up to 5 mm - Single Action Linear Stroke Up to 5 mm - Double Action Linear Stroke Up to mm - Single Action Linear Stroke Up to mm - Double Action Others Specify Indication Gage 5 Without Gage With Gage - Input With Gage - Output With Gages - Input and Output With Gages - Output and With Gages Others Specify Optional Items* Special Options - Specify FY - - / * TYPICAL MODEL NUMBER * Leave it blank for no optional items BFY BRACKET Positioner Mounting Bracket Without Positioner Bracket Universal Rotary Universal Linear (Yoke and Pillar) Linear - Yoke Type Linear - Pillar Type Others - Specify Magnet Mounting Bracket Without Magnet Mounting Bracket Rotary Linear up to 5 mm Linear up to 5 mm Linear up to mm Others - Specify Mounting Bracket Material C I 7 Carbon Steel Bracket 6 SST Bracket Carbon Steel Bracket and Accessories in SST Others Specify Optional Items* Specify Actuador Model / Company BFY - C / * TYPICAL MODEL NUMBER * Leave it blank for no optional items B9
DIMENSIONS Dimensions are mm (in) Valve Positioner Rotary Magnet OUTPUT /8-7 NPT OUTPUT /8-7 NPT SUPPLY /8-7 NPT MOUNTING HOLES FOR M6x SCREWS ( PLACES) 6,5 (.5) 55 (.6) 8 (.7) 9 5 5 (.5) (.77) (.77) OUTPUT / - 8 NPT 9 (.5) SUPPLY / - 8 NPT 6 (.) OUTPUT / - 8 NPT ø8 (.7) (.5) 6,5 (.8) 5, (.) (.9) (.9) (.9) ø69 (.7) ø (.8) ø (.95) ø5 (.97) (.87) 9 (.5) (.5) Linear Magnet HOLE 6. (.5) ( PLACES) 68 (.68) 8 (.7) 9,5 (.95) 55 (.7).5 5 (.89) (.59) A (.) TRAVEL UP TO 5 mm (.59) UP TO 5 mm (.97) UP TO mm (.9) DIMENSION A mm (.7) 9 mm (.9) 85 mm (7.8) B9