{"product_id":"kfd2-stc4-1-pepperl-fuchs-smart-transmitter-power-supply","title":"KFD2-STC4-1 Pepperl+Fuchs SMART Transmitter Power Supply","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePepperl+Fuchs KFD2-STC4-1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-performance 1-channel signal isolator and power source for SMART transmitters. This module energizes 2-wire and 3-wire field devices while accurately transferring 0\/4–20 mA analog signals to the control system. Designed for high-integrity industrial loops, it supports bidirectional\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHART digital communication\u003c\/strong\u003e, allowing engineers to extract diagnostic data and configure field instruments remotely. It serves as a critical interface in process automation, ensuring signal purity and electrical separation between field instrumentation and the PLC\/DCS.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe KFD2-STC4-1 utilizes advanced circuitry to maintain signal accuracy in demanding environments:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Channels:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1-channel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2-wire\/3-wire SMART transmitters; 2-wire SMART current sources\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0\/4 mA to 20 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Communication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBidirectional HART protocol support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Rating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSIL 2 (compliant with IEC\/EN 61508)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24 V DC via Power Rail or terminals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.4 W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInsulation Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e50 V AC (functional)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConnection Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eScrew terminals with integrated test points\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e35 mm DIN rail (EN 60715)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e20 mm x 119 mm x 115 mm (W x H x D)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e200 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHART Transparency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe KFD2-STC4-1 allows HART signals to pass through the isolation barrier without attenuation. This enables seamless use of handheld communicators or Asset Management Systems (AMS) to monitor device health.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFunctional Safety Compliance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSIL 2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erating, this module integrates directly into Safety Instrumented Systems (SIS). It provides the calculated reliability data required for risk reduction in hazardous processes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEfficient Power Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module draws power directly from the Pepperl+Fuchs\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePower Rail\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esystem. This eliminates point-to-point daisy-chain wiring, reduces cabinet clutter, and simplifies hardware hot-swapping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance-Friendly Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated test points allow technicians to measure current loops without disconnecting wires. This minimizes process downtime and prevents accidental loop breaks during routine calibration checks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSmall Footprint:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 20 mm slim housing maximizes rail space, allowing for higher I\/O density in crowded control rooms and field junction boxes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Does the KFD2-STC4-1 support 3-wire transmitters?\u003c\/strong\u003e\u003cstrong\u003eA1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes. The module provides the necessary terminals to power and receive signals from both 2-wire (loop-powered) and 3-wire SMART transmitters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I use this module in a SIL 3 safety loop?\u003c\/strong\u003e\u003cstrong\u003eA2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the KFD2-STC4-1 is rated for SIL 2, you may achieve SIL 3 levels through redundant architectural configurations (such as 1oo2) depending on your specific safety manual calculations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Is this product original Pepperl+Fuchs?\u003c\/strong\u003e\u003cstrong\u003eA3:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWe supply only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePepperl+Fuchs hardware. Each unit ships in factory packaging and includes the manufacturer's standard quality assurance documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How does the \"Power Rail\" feature work?\u003c\/strong\u003e\u003cstrong\u003eA4:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Power Rail is an insert for the DIN rail that provides power and collective error messaging. The KFD2-STC4-1 snaps onto the rail and draws its 24 V DC supply instantly, significantly reducing wiring time for large-scale installations.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43802067664995,"sku":"KFD2-STC4-1","price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/248_4a984d94-4521-48f1-929c-95e09cdb82b0.jpg?v=1761807622","url":"https:\/\/www.autocontrolglobal.com\/products\/kfd2-stc4-1-pepperl-fuchs-smart-transmitter-power-supply","provider":"AutoControl Global","version":"1.0","type":"link"}