Unpacking WARNING: Indicates that death, severe personal injury and/or substantial property damage can occur if proper precautions 1. While unpacking the Logix 3400MD positioner, check the packing are not taken. list against the materials received. Lists describing the system and accessories are included in each shipping container.
Fieldbus oundation compliant digital valve positioner. The positioner is configurable through the local user interface. The Logix 3400MD utilizes the FF protocol to allow two-way remote communications with the positioner. The Logix 3400MD positioner can control both double- and single- acting actuators with linear or rotary mountings.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Figure 1: Logix 3400MD Digital Positioner Schematic (air-to-open configuration) Main PCB Digital Position Algorithm FF Input Signal Air Supply Spool Valve Pressure Sensor Board Flame Exhaust Arrestor Output 1 Flame Arrestor Output 2...
II 2 D, Ex tD A21 T95 C IP65 Ui=24V, Ii=250mA, Pi=1.2W, Ci=3300pF, *Note: The Logix 3400MD is designed to operate with clean, dry, oil-free Ta=-40 C to 55 instrument grade air per ISA 7.0.01-1996 or with dry nitrogen, sweet natural Li=10uH gas.
The Logix 3400MD positioner is an electric feedback instrument. features, Soft Limits and Final Value Cutoff, may affect the final input Figure 1 shows a Logix 3400MD positioner installed on a double- signal. The actual command being used to position the stem, after any acting linear actuator for air-to-open action.
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 off against a nozzle causing the pressure under the diaphragm to • Write to Final_Value to change command. increase. As the pressure under the diaphragm increases or decreases, • Actuator is tubed and positioner is configured air-to-open. the spool valve moves up or down respectively. The hall effect sensor...
Reposition the feedback linkage or rotate the position sensor to correct the error. To mount a Logix 3400MD positioner to a Valtek linear Mark One valve, refer to Figure 3 and proceed as outlined below. The following tools are...
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Orienting the Take-off Arm for Final Lock Down If calibration failed, as indicated by a YRYR or YRRY blink code, the 1. Tube the Logix 3400MD positioner to the actuator according to the A/D feedback values were exceeded and the arm must be adjusted instructions given in Section 5.5, “Tubing Positioner to Actuator.”...
Mounting Procedure (See Figure 5) diagnostic features of the Logix 3400MD but is not required. In applica- tions where the supply pressure is higher than the maximum actuator The optional rotary mounting applies to Valtek valve/actuator assem- pressure rating a supply regulator is required to lower the pressure blies that are equipped with mounted volume tanks or handwheels.
FF Signal FF Command Input Wiring The Logix 3400MD is non-polarity sensitive. Wire FF source to the input terminals (see Figure 6). Minimum operating voltage is 9 VDC. The FF signal to the Logix 3400MD digital positioner should be in shielded cable.
DD Support Voltage = Compliance Voltage (@ 23 mA) – Equation 1 The DD for the Logix 3400MD can be downloaded from either the 23 mA • (R barrier wire flowserve website: www.valvesight.com or the F...
Control_Flags parameter in the transducer block. Operation Optional Pos. Characterization The Logix 3400MD local user interface (Figure 8) allows the user to If the Pos. Characterization switch is set to Other then the CURVE_ configure the basic operation of the positioner, tune the response, and SELECT parameter is active with the following options: calibrate the positioner without additional tools or configurators.
If the adjustable GAIN selector switch is set to “E” with the auto tune Jog Select Jog if the valve/actuator assembly has no physical switch on, a Flowserve standard response tuning set will be calculated calibration stop in the open position. In the Jog mode the positioner will...
The positioner adapts to the actuator performance and begins each calibration where the The blink codes used to convey the status of the Logix 3400MD digital posi- last attempt ended. On an initial installation it is recommended that after tioner are described in the table below.
7.12 Device Description (DD) Files Feeback no motion time RGYY No Motion Time Out The DD files for the Logix 3400 can be downloaded from the Flowserve out alarm** website, http://www.valvesight.com, or the Foundation Fieldbus Factory reset state. RGRR Factory Reset State website, www.fieldbus.org.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Table VII: Status and Conditions Meaning Sticker Text GGGG Normal Operation Normal Operation Tight shutoff (MPC) GGGY MPC Active active* Local Interface GGYG Local Interface Disabled Disabled* Digital Command GGYY Digital Command Mode...
Position Span error (no supply pressure, malfunctioning spool valve). Integration Summer: The integral summer within the Logix 3400MD digital positioner is clamped at +20 percent and -20 percent. If the 7.13.2 Control and Tuning...
6 percent (remember the 1 percent hysteresis value These tuning sets can be used to obtain initial values for Flowserve added by the positioner). At this point, the stem position will follow the products and comparable actuator sizes.
7.15 Characterization Retention Stroke length is used by the travel accumulator. When the stroke Once a custom curve has been loaded into the Logix 3400MD digital length and units are set, the length is used to determine the total travel positioner’s memory it is retained in the EPROM until it is either edited...
7.15.1 Initiating a Valve Signature Notice that the valve will move and FINAL_POSITION_VALUE will change. A feature of the Logix 3400MD positioner is the ability to capture and store a valve diagnostic signature. A signature is the collected data 12. SIG_FLAGS indicates SIG COMPLETE.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Microprocessor Semiconductor device capable of performing calculations, data transfer, and logic decisions. Also referred to as CPU (Central Processing Unit). Protocol A set of rules governing how communications messages are sent and received.
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 7.18 Transducer Block Parameters Table X: Transducer Block Parameters Logix Positioner Fieldbus Fieldbus Variable Transducer Fieldbus Block Description Name Block Datatypes Register Type Variable Name Index Fieldbus Standard Parameters BLK_DATA RECORD Foundation Fieldbus Defined...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Logix Positioner Fieldbus Fieldbus Variable Transducer Fieldbus Description Block Name Block Datatypes Register Type Variable Name Index BACKOFF_EFFORT XDTB_TECH FLOAT S_LONG Hall_Sum Status, memory Backoff, Control Term Value SPOOL_POSITION XDTB_TECH FLOAT S_INT...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Logix Positioner Fieldbus Fieldbus Variable Transducer Fieldbus Description Block Name Block Datatypes Register Type Variable Name Index PRESS_CTRL_ XDTB_MAIN FLOAT S_INT /100 PS_Window Setup, Pressure Control, Window WINDOW Size FINAL_VALUE_ XDTB_MAIN FLOAT...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name HOURS_SINCE_RESET XDTB_MAIN FLOAT U_LONG Reset_Hours Status, System, Time Elapsed, Mem Reset HOURS_LIFETIME XDTB_MAIN FLOAT U_LONG...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name MAIN_BLOCK_TEST XDTB_MAIN ARRAY Diagnostic Use Only MAIN_EXEC_DELAY XDTB_MAIN UNSIGNED 16 Diagnostic Use Only MD_BLOCK_TEST XDTB_MD...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name VALVE_TRIMNO XDTB_MAIN UNSIGNED 8 U_CHAR VALVEtrimno User Info, Valve, Trim Diameter VALVE_SN XDTB_MAIN VISIBLE_ STRING...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name CALIBRATION_STATUS XDTB_MAIN BIT_STRING U_CHAR Calibration_ Status, Alarm, Calibration Flags Status ELECTRONIC_STATUS XDTB_TECH BIT_STRING U_CHAR Electronic_...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name SPOOL_END_LIMIT XDTB_MD FLOAT U_INT SS_highLimit Spool End Limit SPOOL_PERCENT XDTB_MD FLOAT U_INT /100 SS_pctYellow Spool Percent Yellow...
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name DEVIATION_TIMES_ XDTB_MD INTEGER 16 S_INT Dev_Sum Sumation of Deviation EFFECTIVE_GAIN PNEUMATIC_LEAK XDTB_MD FLOAT FLOAT Leak...
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Fieldbus Fieldbus Variable Transducer Fieldbus Logix Positioner Block Name Block Datatypes Description Index Register Type Variable Name U_CHAR P2IN_ Test, Direct I/O, Port 2 U_CHAR P3IN_ Test, Direct I/O, Port 3 U_CHAR...
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Figure 14: Spool and Block Figure 12: Driver Module Assembly WARNING: Spool (extending from the driver module assembly) is easily damaged. Use extreme caution when handling spool and spool valve block. Do not handle the spool by the machined portions of spool.
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Figure 16: Main PCB Assembly Plastic Cover Retaining Screws Plastic Board Cover Main PCB Retaining Screw Main PCB Assembly Regulator Fieldbus PCB Pressure Sensor Board 13. Feed the two wires on the driver module back into the driver flat on the driver module and the flat on the housing are aligned.
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Older models contain regulators with different settings 27. Install two spool-valve screws and tighten securely with a Phillips that will not work in the Logix 3400MD model. The regulator screwdriver (see Figure 14). pressure setting is printed on the top of the regulator. The Logix 28.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 3. Remove the spool valve cover by removing the screw and sliding the cover assembly backwards until the tab is clear of the slot. It is not necessary to remove the sheet metal cap, hydrophobic filter, or 1.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 Figure 19: Stem Position Sensor Orientation sheet metal cover may be removed and cleaned with a brush or by Figure 18: Spool Valve Cover Assembly blowing out with compressed air (Figure 13).
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Older models contain sensors with different ranges that a Phillips screwdriver. Do not over tighten. will not work in the Logix 3400MD model. The wires on the Logix 9. Install the plastic board cover. Insert the three retaining screws 3400MD position sensor are red, white and black.
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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 calibrated. The actuator pressure sensor calibration is performed using 5. Remove the two screws holding the pressure sensor plug plate to a 375 Handheld Communicator or Host configuration software. the housing. Lift the metal stiffener plate off the pressure sensor plug plate and set aside for future use.
(from the actuator). Back pressure limitations are described below. sensitive devices. Two chambers must be vented on the Logix 3400MD positioners: the 1. Make sure the valve is bypassed or in a safe condition. main housing chamber and the spool valve chamber (Figures 20 and 21).
6 percent (there is a 1 percent hysteresis value added by the positioner). At this point, the stem position will follow the command signal. While in Final Value Cutoff, the Logix 3400MD LEDs will blink GGGY. Q: I have Final Value Cutoff set to 3 percent but the valve will not go below 10 percent.
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 14 How to Order Table XVII: How to Order Selection Code Protocol Fieldbus* oundation Standard Diagnostics* Diagnostics Advanced Diagnostics Pro Diagnostics Aluminum, White Paint (Valtek)* Stainless Steel, No Paint (Valtek) Aluminum, Black Paint (Automax) Housing &...
Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09 15 Troubleshooting Table XVIII: Troubleshooting Failure Probable Cause Corrective Action Voltage of supply source is not high enough Verify that voltage source can supply at least 9 V No LED is blinking...
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Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions.
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