{"product_id":"pepperl-fuchs-kfd2-stc4-ex1-h-k-system-smart-transmitter-power-supply","title":"Alimentation transmetteur intelligente K-System Pepperl+Fuchs KFD2-STC4-Ex1.H","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eKFD2-STC4-Ex1.H\u003c\/strong\u003e is a 1-channel isolated barrier designed for intrinsic safety applications. This device supplies 2-wire and 3-wire \u003cstrong\u003eSMART transmitters\u003c\/strong\u003e with a higher output voltage in hazardous areas, and it can also be configured for use with 2-wire \u003cstrong\u003eSMART current sources\u003c\/strong\u003e. It transfers the \u003cstrong\u003eanalog input signal\u003c\/strong\u003e to the safe area as an isolated current value. Digital signals can be superimposed on the loop in either the hazardous or safe area to enable robust \u003cstrong\u003ebi-directional communication\u003c\/strong\u003e. The module maintains galvanic isolation across the system to preserve loop integrity in demanding industrial process control networks.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntrinsic Safety Isolation:\u003c\/strong\u003e Provides reliable signal transfer between hazardous zone field devices and safe area control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Field Voltage Support:\u003c\/strong\u003e Delivers an available voltage of \u0026gt;= 17.6 V DC at 20 mA to adequately power field instrumentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Protocol SMART Support:\u003c\/strong\u003e Fully compatible with digital communication protocols, including \u003cstrong\u003eHART\u003c\/strong\u003e, \u003cstrong\u003eBRAIN\u003c\/strong\u003e, and \u003cstrong\u003eFoxboro\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Loop Resistance:\u003c\/strong\u003e Features an internal 250 Ohm resistor between terminals 8 and 9 that can be selected if the loop's HART communication resistance is insufficient.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Test Points:\u003c\/strong\u003e Built-in test sockets are directly integrated into the terminals to simplify connection of \u003cstrong\u003eHART communicators\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional Safety Rating:\u003c\/strong\u003e Certified up to \u003cstrong\u003eSIL2\u003c\/strong\u003e compliance according to IEC 61508 standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetrochemical and Refining:\u003c\/strong\u003e Powering and isolating field transmitters located in explosive atmospheres like Zone 0, Zone 1, and Zone 2 environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Processing:\u003c\/strong\u003e Bi-directional data extraction from smart field instrumentation back to a distributed control system (DCS) or safety instrumented system (SIS).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and Wastewater:\u003c\/strong\u003e Interfacing with liquid and level measurement transmitters over long-distance cable runs utilizing standard 4-20 mA control loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePepperl+Fuchs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 ... 35 V DC via Power Rail or terminals 14+, 15-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0\/4 ... 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 2.4 V at 20 mA (terminals 5, 6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 64 Ohm terminals 2-, 3; \u0026lt;= 500 Ohm terminals 1+, 3 (250 Ohm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;= 17.6 V at 20 mA terminals 1+, 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0\/4 ... 20 mA (overload \u0026gt; 25 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoad\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 ... 800 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRipple\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin supply tolerance (Supply) | \u0026lt;= 50 uA_rms (Output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransfer Deviation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 10 uA incl. calibration, linearity, hysteresis, loads and supply fluctuations at +20 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Influence\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.25 uA\/K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField to control: 0 ... 7.5 kHz (-3 dB) | Control to field: 0.3 ... 7.5 kHz (-3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSettling \/ Rise Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSettling time: 200 us | Rise\/fall time: 20 us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 ... 60 degC (-4 ... 140 Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDegree of Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 200 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 x 124 x 115 mm (0.8 x 4.9 x 4.5 in), housing type B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOn 35 mm DIN mounting rail acc. to EN 60715:2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTerminal Connection\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 1+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHazardous Area Input (Positive Connection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 2-\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHazardous Area Input (Negative Connection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHazardous Area Input (Common\/Return Reference)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 5-\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHazardous Area Current Source Input (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 6+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHazardous Area Current Source Input (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 7-\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafe Area Output (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 8+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafe Area Output (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 9\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafe Area Output (Internal 250 Ohm Resistor Connection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 14+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDevice Power Supply 24 V DC (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal 15-\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDevice Power Supply 24 V DC (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Rail\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlternative 24 V DC continuous supply rail connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN Rail Installation:\u003c\/strong\u003e Snap the module vertically onto a standard 35 mm DIN mounting rail ensuring the locking tabs engage securely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Rail Integration:\u003c\/strong\u003e When using the optional Power Rail system, align the module's bottom contacts with the rail insert before clicking it down; do not wire power to individual terminals if the rail is energized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolarity Verification:\u003c\/strong\u003e Double-check terminal wiring configuration diagrams for 1+, 2-, 14+, and 15- prior to switching on the loop power source to prevent hardware faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Area Precautions:\u003c\/strong\u003e Maintain safe physical separation between the blue hazardous intrinsically safe terminal connections and the green safe area connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Termination:\u003c\/strong\u003e Bridge terminals 8 and 9 if the target system requires the insertion of the internal 250 Ohm resistor to stabilize HART protocol interactions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC-Type Examination Certificate:\u003c\/strong\u003e BAS 99 ATEX 7060 \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATEX Group, Category, Protection Type:\u003c\/strong\u003e II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 2 Conformity Statement:\u003c\/strong\u003e TÜV 99 ATEX 1499 X; II 3G Ex nA II T4 [device in zone 2] \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMining Certification:\u003c\/strong\u003e DMT 01 ATEX E 133; (M1) [Ex ia] I \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIECEx Approval:\u003c\/strong\u003e IECEx BAS 04.0016; [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL Approval:\u003c\/strong\u003e 116-0173 (cULus) \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional Safety Standards:\u003c\/strong\u003e Up to SIL2 according to IEC 61508 \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectromagnetic Compatibility:\u003c\/strong\u003e EN 61326-1:2006, NE 21:2006 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe device functions as an isolated barrier that provides power to transmitters in hazardous zones and transfers isolated analog signals back to a safe area control system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this barrier be used with non-HART devices?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it functions perfectly with standard 0\/4 to 20 mA analog instruments even if digital modulation protocols are not deployed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the internal 250 Ohm resistor assist with communication?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf the loop impedance of the safe area control system is too low for a HART communicator to decode data, using terminal 9 adds the integrated resistor into the circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power supply range does the device accept?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module operates reliably on any input supply voltage between 20 V DC and 35 V DC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this isolated barrier require a direct terminal connection for power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePower can be supplied either directly through terminals 14+ and 15- or smoothly via a compatible Power Rail unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it support a 3-wire transmitter configuration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the hardware accommodates both 2-wire and 3-wire SMART transmitters as well as 2-wire current sources.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do the green and blue terminals signify?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe blue terminals are dedicated to fields located within hazardous, intrinsically safe zones, while the green terminals are intended for safe area or control-side wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the response speed of the analog transmission channel?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe device features a settling time of 200 microseconds along with a rise and fall time specification of 20 microseconds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many channels does this module support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis model is a dedicated single-channel interface unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should I check if the front panel LED is off?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn unlit green LED indicates a power supply failure, requiring verification of the 24 V DC power rail or terminal connections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum allowed load resistance on the output side?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe safe area current loop supports load impedances ranging from 0 Ohm up to a maximum limit of 800 Ohm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre there integrated testing connections available on the unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, specialized test sockets designed to fit standard HART communicator leads are constructed right into the removable terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this device pass digital parameters backwards and forwards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe circuit layout allows digital communication signals to superimpose on the analog current loop and pass bi-directionally.\u003c\/p\u003e","brand":"Pepperl + Fuchs","offers":[{"title":"Default Title","offer_id":53240106025323,"sku":"KFD2-STC4-EX1.H","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/KFD2-STC4-EX1.H_2.png?v=1779882065","url":"https:\/\/www.plcprotech.com\/fr\/products\/pepperl-fuchs-kfd2-stc4-ex1-h-k-system-smart-transmitter-power-supply","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}