{"product_id":"kfu8-sr-ex2-w-pepperl-fuchs-switch-amplifier-k-system","title":"KFU8-SR-Ex2.W Pepperl+Fuchs Switch Amplifier K-System","description":"\u003cp\u003eConfigured for discrete NAMUR sensor signal isolation and relay switching in hazardous area interface loops, the \u003cstrong\u003ePepperl+Fuchs KFU8-SR-Ex2.W\u003c\/strong\u003e (\u003cstrong\u003eKFU8-SR\u003c\/strong\u003e Switch Amplifier) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eFunctional Suffix Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKFU8\u003c\/strong\u003e: Wide-range universal power supply housing designator (115\/230 VAC or 24 VDC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSR\u003c\/strong\u003e: Switch amplifier relay output module classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEx2\u003c\/strong\u003e: Galvanically isolated intrinsically safe interface for 2 field channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.W\u003c\/strong\u003e: Changeover relay output contacts (SPDT execution per channel).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical \u0026amp; Environmental Specs\u003c\/h3\u003e\n\u003cfigure\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\u003eKFU8-SR-Ex2.W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePepperl+Fuchs\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\u003eApprox. 150 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\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 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2 W max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e2 NAMUR Proximity Sensors or Dry Contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003e2 SPDT Relay Contacts (1 per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e3-way galvanic isolation (input\/output\/power)\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 Barrier Protection\u003c\/h3\u003e\n\u003cp\u003eBuilt-in intrinsic safety (Ex i) barriers enforce energy limitation to prevent ignition in explosive gas or dust atmospheres. The enclosure maintains DIN-rail mounting stability under mechanical vibration, suppressing voltage transients and line fault conditions (LFD) while keeping protocol conversion latencies near zero during discrete signal transmission across safety loops.\u003c\/p\u003e\n\u003ch3\u003ePackage Component Set\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Pepperl+Fuchs KFU8-SR-Ex2.W Switch Amplifier\u003c\/li\u003e\n\u003cli\u003e1 x Removable Screw Terminal Block Set\u003c\/li\u003e\n\u003cli\u003e1 x Housing Side Cover Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCabinet Installation \u0026amp; Field Wiring\u003c\/h3\u003e\n\u003ch4\u003eMounting Track Assembly\u003c\/h4\u003e\n\u003cp\u003eLatch the barrier unit onto a standard 35 mm DIN rail inside a safe area enclosure or Zone 2 local cabinet. Ensure minimum 6 mm clearance between intrinsically safe and non-intrinsically safe field wiring terminals.\u003c\/p\u003e\n\u003ch4\u003eSensor Loop Termination\u003c\/h4\u003e\n\u003cp\u003eConnect Field NAMUR proximity switches or dry contacts to blue intrinsically safe terminals 1-2 (Channel 1) and 4-5 (Channel 2). Enable internal fault detection via DIP switches if line fault monitoring is required.\u003c\/p\u003e\n\u003ch4\u003ePower Supply and Output Wiring\u003c\/h4\u003e\n\u003cp\u003eWire supply voltage (20 to 90 VDC or 90 to 253 VAC) to power terminals 14 and 15. Connect control system digital inputs or alarm circuits to the SPDT relay contacts at terminals 7-8-9 and 10-11-12.\u003c\/p\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCan line fault detection be configured for dry contact input signals?\u003c\/p\u003e\n\u003cp\u003eLine fault detection requires external resistors wired across and in series with dry contacts to distinguish normal open\/close states from short\/open circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat voltage range does the universal power supply input support?\u003c\/p\u003e\n\u003cp\u003eThe universal power interface accepts either 20 to 90 VDC or 90 to 253 VAC without requiring manual voltage selection jumpers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs hot-swapping allowed for terminals located in hazardous areas?\u003c\/p\u003e\n\u003cp\u003eBlue intrinsically safe field terminals may be disconnected under power, but power input terminals must be de-energized before removal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow are the SPDT relay outputs affected by a detected line fault?\u003c\/p\u003e\n\u003cp\u003eWhen line fault detection is enabled, a broken or shorted field wire de-energizes the corresponding channel relay and lights the red diagnostic LED.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat galvanic isolation level is maintained between input circuits and supply power?\u003c\/p\u003e\n\u003cp\u003eThe module provides complete 3-way galvanic isolation rated for reinforced insulation up to 253 VAC between input, output, and power supply.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum switching frequency supported by the internal output relays?\u003c\/p\u003e\n\u003cp\u003eThe mechanical relay outputs support a maximum switching frequency of 10 Hz under resistive load conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow are direction of operation and fault detection mode configured on the module?\u003c\/p\u003e\n\u003cp\u003eDIP switches located on the front panel set normal\/inverted output logic and enable\/disable line fault detection for each channel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat grounding procedure applies to the field sensor cable shielding?\u003c\/p\u003e\n\u003cp\u003eGround cable shields at the safe area side only; do not ground shields inside hazardous areas to prevent ground loop currents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pepperl+Fuchs","offers":[{"title":"Default Title","offer_id":47508770685101,"sku":"KFU8SREX2W","price":128.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/kfu8-uft-2dfa_1.jpg?v=1789090644","url":"https:\/\/www.maxwellplc.com\/ga\/products\/kfu8-sr-ex2-w-pepperl-fuchs-switch-amplifier-k-system","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}