{"product_id":"smart-transmitter-power-supply-yokogawa-kfd2-stc4-1","title":"SMART Transmitter Power Supply Yokogawa KFD2-STC4-1","description":"\u003cp\u003eConfigured for signal conditioning in industrial networks, the \u003cstrong\u003eYokogawa KFD2-STC4-1\u003c\/strong\u003e (\u003cstrong\u003eKFD2-STC4-1\u003c\/strong\u003e SMART Transmitter Power Supply) provides direct physical\/electrical execution of signal isolation and transmitter power distribution.\u003c\/p\u003e\n\u003ch3\u003eHardware 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\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eKFD2-STC4-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20 mm x 119 mm x 115 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC (via Power Rail)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e2-wire \/ 3-wire SMART transmitters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e0\/4-20 mA current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Rating\u003c\/td\u003e\n\u003ctd\u003eSIL2 acc. to IEC 61508\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIntrinsic Safety and Network Signal Conditioning\u003c\/h3\u003e\n\u003cp\u003eThe KFD2-STC4-1 incorporates intrinsic safety (Ex i) barriers to ensure safe operation in hazardous area loops. These barriers limit the electrical energy transmitted to the field instrumentation, preventing ignition sources in volatile atmospheres. The module provides galvanic isolation between the input and output circuits, eliminating ground loops that often degrade signal accuracy in long-run industrial cabling. Furthermore, the unit facilitates protocol transparency for SMART transmitters, allowing bidirectional digital communication to pass through the 4-20 mA loop without attenuation or loss of HART data packets.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the KFD2-STC4-1 support DIN-rail mounting stability?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The housing is designed for snap-on mounting onto a 35 mm DIN mounting rail. For high-vibration applications, ensure the unit is fully seated and locked into the rail profile to maintain electrical connectivity via the Power Rail system.\u003c\/p\u003e\n\u003cp\u003eQ: Is the output signal capable of driving external loads while maintaining HART transparency?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The output is a standard 0\/4-20 mA active or passive current source. It is designed to accommodate the typical load impedance requirements of DCS or PLC analog input cards while preserving the integrity of the superimposed HART communication frequency.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Ensure the module is installed in a vertical orientation to facilitate proper convective airflow. Use the integrated Power Rail connector for simplified 24 VDC power distribution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring\u003c\/strong\u003e: Use shielded twisted-pair cables for input and output connections to mitigate electromagnetic interference. Ground the cable shield at one point only—typically at the control system side—to prevent circulating ground currents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination\u003c\/strong\u003e: Utilize the provided test points on the front terminal block for loop current verification without disconnecting field wires. Ensure terminal screw torque is maintained at manufacturer-specified levels (typically 0.5 Nm) to prevent loose connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSegregation\u003c\/strong\u003e: Maintain strict physical separation between intrinsically safe (blue) terminal wiring and non-intrinsically safe wiring to prevent fault propagation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49516224184572,"sku":"KFD2-STC4-1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/KFD2-STC4-12.jpg?v=1783906475","url":"https:\/\/www.electronicplc.com\/es\/products\/smart-transmitter-power-supply-yokogawa-kfd2-stc4-1","provider":"Electronic PLC","version":"1.0","type":"link"}