{"product_id":"contact-input-digital-module-yokogawa-adm51-2-s4","title":"Contact Input Digital Module Yokogawa ADM51-2 S4","description":"\u003ch2\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eADM51-2 S4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003econtact (digital) input module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa industrial automation systems\u003c\/strong\u003e. It monitors\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edry contacts, limit switches, and other discrete field devices\u003c\/strong\u003e, converting physical switch states into real-time digital signals for the control system.\u003c\/p\u003e\n\u003cp\u003eDesigned for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esignal integrity\u003c\/strong\u003e, the module incorporates advanced noise filtering and optical isolation to prevent false triggering in electrically busy environments. Its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eslim, high-density form factor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows efficient installation in standard I\/O nests, making it ideal for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esafety interlocks, status monitoring, and sequence control\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein industrial applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cstrong\u003eItem\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\u003eProduct Model\u003c\/td\u003e\n\u003ctd\u003eADM51-2 S4 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eYokogawa Electric Corporation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eContact Input \/ Digital Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Density\u003c\/td\u003e\n\u003ctd\u003e16 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Signal\u003c\/td\u003e\n\u003ctd\u003eDry contact (voltage-free) \/ discrete digital signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eReal-time logic state detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Protection\u003c\/td\u003e\n\u003ctd\u003eOptical isolation, surge suppression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Revision\u003c\/td\u003e\n\u003ctd\u003eS4 (latest high-stability version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e20.3 cm × 2.5 cm × 12.7 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Scenarios\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSwitch Monitoring\u003c\/strong\u003e\u003cbr\u003eTracking open\/closed states of manual valves, circuit breakers, and emergency stop buttons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSequence Control\u003c\/strong\u003e\u003cbr\u003eProviding feedback from mechanical limit switches for automated production lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAlarm Systems\u003c\/strong\u003e\u003cbr\u003eInterfacing with fire, smoke, or pressure switches to trigger safety protocols.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct FAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the ADM51-2 S4 require external wetting voltage for contacts?\u003c\/strong\u003e\u003cbr\u003eA: No. The module is designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edry (voltage-free) contacts\u003c\/strong\u003e, providing internal sensing voltage. Verify the specific rack’s power configuration before wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What distinguishes the S4 revision from earlier versions?\u003c\/strong\u003e\u003cbr\u003eA: The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS4 revision\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures improved\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecomponent longevity\u003c\/strong\u003e, enhanced\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEMI resistance\u003c\/strong\u003e, and overall hardware stability compared to earlier S1 or S2 versions.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51718442516792,"sku":"ADM51-2 S4","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/ADM51-2_S41.jpg?v=1770344676","url":"https:\/\/www.automodulexpert.com\/bg\/products\/contact-input-digital-module-yokogawa-adm51-2-s4","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}