{"product_id":"3503e","title":"Module d'entrée numérique 24 VAC\/VDC Triconex 3503E TMR","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E (3503E)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability, Triple Modular Redundant (TMR)\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDigital Input Module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned for the Triconex Tricon safety system. Operating at a nominal\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e24 VAC\/VDC\u003c\/strong\u003e, this module provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e32 input points\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eorganized in four commoned groups of eight. Engineered for safety-instrumented functions (SIF) in demanding sectors like mining, petrochemicals, and automated manufacturing, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures maximum process availability. By utilizing three independent internal channels and 2-out-of-3 voting logic, the module eliminates single points of failure. The integrated self-test feature continuously monitors the circuitry for \"stuck-on\" conditions, providing the critical diagnostic coverage required for de-energize-to-trip safety applications.\u003c\/p\u003e\n\u003ch3\u003eArchitectural Logic \u0026amp; Diagnostics\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTriconex 3503E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003earchitecture prioritizes signal integrity through opto-isolation, providing 1,000 VAC minimum point isolation to protect the sensitive TMR backplane from field-side electrical noise. Each input point features an individual status indicator for rapid local troubleshooting. A key technical advantage is the module's sophisticated diagnostic suite, which includes a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e20 ms typical diagnostic glitch\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eduration to verify circuit transitions without interrupting the safety logic. With an input impedance of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u0026gt; 1.25 kΩ\u003c\/strong\u003e, the module maintains low power dissipation while ensuring highly accurate switching levels—typically transitioning from Off to On at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e15 VAC\/VDC\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e3503E Digital Input Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth align=\"left\"\u003eFeature\u003c\/th\u003e\n\u003cth align=\"left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eColor code\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eDark red\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eNumber of input points\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e32, commoned in groups of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput frequency range\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eDC or 47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eRecommended input range\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e20–42.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eMaximum voltage\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e42.5 VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eSwitching level: Off to On\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e15 VAC\/VDC typical, 18 VAC\/VDC worst-case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eSwitching level: On to Off\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e8 VAC\/VDC typical, 6 VAC\/VDC worst-case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eTypical hysteresis\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e4 VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eNominal turn-on\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e6 mA to 9 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput impedance\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026gt; 1.25 kΩ nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput delay: Off to On\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026lt; 8 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput delay: On to Off\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026lt; 15 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003ePoint isolation, opto-isolated\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1,000 VAC minimum, 1,500 VDC minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eStatus indicator: On or Off State\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1 per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eStatus indicator: Module status\u003c\/td\u003e\n\u003ctd align=\"left\"\u003ePass, Fault, Active\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eLogic power\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026lt; 10 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eNominal field power load\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e0.5 watts per On pointᵃ1.5 watts @ maximum field voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eLeakage current to chassis @ 60 Hz\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e0.25 mA maximum per On point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cspan\u003eInput diagnostic fault coverage:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eMaximum input toggle rateᵇ\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eEvery 100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eMinimum input toggle rate, On state\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eMinimum input toggle rate, Off state\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eEvery 24 months (manually toggled by the user)ᶜ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eDiagnostic glitch durationᵈ\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e20 ms typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eOutput voltage\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026lt; 1\/2 V\u0026lt;sub\u0026gt;IN\u0026lt;\/sub\u0026gt;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eOutput impedance\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u0026lt; 1.87 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the \"Commoned in Groups of 8\" configuration affect wiring?\u003c\/strong\u003eIn the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E\u003c\/strong\u003e, eight input points share a single return path (common). While this simplifies wiring for high-density applications, engineers must ensure that all eight devices in a group share the same power source potential to avoid cross-talk or ground loops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is the 3503E not recommended for use with shunt-diode intrinsic safety barriers?\u003c\/strong\u003eShunt-diode barriers can interfere with the module's self-test pulse (diagnostic glitch). For intrinsic safety applications requiring such barriers, Invensys recommends the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eModel 3505E\u003c\/strong\u003e, which is specifically designed to handle the impedance characteristics of IS barriers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the \"Diagnostic Glitch\"?\u003c\/strong\u003eThe glitch is a momentary output voltage (\u0026lt; 1\/2 VIN) used by the TMR controller to verify the input circuit's health. While it is essential for safety diagnostics, users should ensure that parallel-connected high-impedance equipment is not falsely energized by this 20 ms pulse.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edissipates approximately 0.5 watts per \"On\" point. In a fully loaded 32-point configuration at maximum field voltage, the thermal load can reach 1.5 watts. Ensure the cabinet has adequate airflow to prevent heat buildup, which can affect the lifespan of the opto-isolators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eToggling Requirements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo maintain peak diagnostic coverage, the TMR system requires that inputs are toggled periodically. If a point is in a \"normally energized\" state for a prolonged period, it must be manually toggled at least once every 24 months to verify it can still transition to the \"Off\" (safe) state.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChassis Keying:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlways verify that the slot in the Tricon chassis is keyed for the \"Dark Red\" color code. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis mechanically keyed to prevent accidental insertion into a high-voltage slot, which could cause immediate hardware damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3503E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estands out for its high-speed response, boasting an \"Off to On\" delay of less than\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8 ms\u003c\/strong\u003e. This makes it an excellent choice for high-speed shutdown sequences where every millisecond counts toward preventing mechanical equipment damage. Its robust mechanical build, weighing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 kg\u003c\/strong\u003e, provides excellent vibration resistance, ensuring that the module remains seated and functional in the high-frequency environments of turbine control and heavy industrial processing.\u003c\/p\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":53102420787563,"sku":"3503E","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/3503E-ooo30p0g4qy.png?v=1776137103","url":"https:\/\/www.plcprotech.com\/fr\/products\/3503e","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}