{"product_id":"triconex-3502en2-digital-input-module","title":"Triconex 3502EN2 Digital Input Module","description":"\u003ch3 class=\"\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe Triconex 3502EN2 is a high-availability Digital Input (DI) module engineered for the Triple Modular Redundant (TMR) architecture of the Tricon safety system.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThis module serves as the primary interface for detecting the status of field-mounted dry contacts and discrete switches,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003esuch as pushbuttons,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003elimit switches,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand pressure contacts.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eOperating with a 48 VDC threshold,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ethe 3502EN2 provides superior noise immunity and signal integrity compared to lower voltage variants.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eAs a critical component of a Safety Instrumented System (SIS),\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eit utilizes a triplicated internal processing path to ensure that every input signal is cross-verified via 2-out-of-three (2oo3) voting logic,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eeffectively eliminating single points of failure and ensuring SIL 3 compliance in high-risk environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"\"\u003eTechnical Hardware Profiles and Input Parameters\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe 3502EN2 is characterized by its high-density channel count and its ability to maintain deterministic performance in electrically volatile industrial settings.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eInput Channels:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e32 isolated points,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003etriplicated for TMR logic.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eOperating Voltage:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e48 VDC nominal (Commoned or Isolated configurations depending on the baseplate).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eLogic Architecture:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eTriple Modular Redundancy (TMR) with continuous hardware-based voting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eSelf-Diagnostics:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eContinuous background testing for stuck-at conditions,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ecircuit health,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand input discrepancies.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eHot-Swap Capability:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eSupports online replacement without process interruption or safety logic degradation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003ePower Optimization:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eEngineered for high efficiency with ultra-low thermal dissipation per point.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eEngineering Attribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Detail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3502EN2\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.02 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.2 x 40.5 x 40 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnvironmental Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40°C to +70°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Integrity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSIL 3 Capable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSystem Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 class=\"\"\u003eIndustrial Process Utility and Safety Roles\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe 3502EN2 is a foundational element in facilities where accurate discrete sensing is required to trigger safety interlocks and emergency procedures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eHigh-Integrity Emergency Shutdown (ESD)\u003c\/strong\u003e\u003cspan class=\"\"\u003eIn refineries and chemical reactors,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ethe 3502EN2 monitors manual ESD pushbuttons and automated pressure switches.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eIts 48V logic ensures that the signal reaches the controller without interference from nearby high-voltage cabling,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eensuring that the plant can transition to a \"fail-safe\" state instantly when a hazard is detected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eTurbine and Compressor Protection\u003c\/strong\u003e\u003cspan class=\"\"\u003eFor rotating machinery,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ethis module tracks vibration switches and overspeed contacts.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThe high-speed response of the 3502EN2 ensures that mechanical failures are caught within milliseconds,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003epreventing catastrophic damage to expensive turbine blades and shafts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eBurner Management System (BMS) Interlocks\u003c\/strong\u003e\u003cspan class=\"\"\u003eThe module is utilized to verify the status of fuel gas valves and flame scanners in utility boilers.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eIts triplicated design prevents \"nuisance trips\" that cause unnecessary power outages,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ewhile guaranteeing that a true loss-of-flame condition results in an immediate fuel cutoff.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eFire and Gas (F\u0026amp;G) Monitoring\u003c\/strong\u003e\u003cspan class=\"\"\u003eIntegrated into site-wide safety networks,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ethe 3502EN2 processes inputs from smoke detectors and manual pull stations.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThe module's continuous internal diagnostics provide the operator with a high level of confidence that the fire protection system is always ready to actuate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":45519035236525,"sku":"3502EN2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/triconex-3502en2-digital-input-module-nzoqyueor1h.jpg?v=1766985373","url":"https:\/\/www.maxwellplc.com\/products\/triconex-3502en2-digital-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}