{"product_id":"yokogawa-sdv144-s53-b4s00-safety-digital-input-module","title":"Yokogawa SDV144-S53\/B4S00 Safety Digital Input Module","description":"\u003ch3\u003e\n\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSDV144-S53\/B4S00\u003c\/strong\u003e is a high-reliability digital input module developed by Yokogawa for use in Safety Instrumented Systems and critical process control architectures. Designed to monitor dry contact signals with precision, this module ensures stable and noise-resistant signal acquisition in demanding industrial environments.\u003c\/p\u003e\n\u003cp\u003eAs part of Yokogawa’s safety I\/O portfolio, the \u003cstrong\u003eSDV144-S53\/B4S00\u003c\/strong\u003e supports redundant system configurations and channel-level electrical isolation, making it suitable for applications where operational continuity and fault tolerance are mandatory.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFunctional Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThis module processes up to sixteen independent digital input signals sourced from no-voltage contacts. Each channel is electrically isolated to minimize cross-interference and to protect the control system from field-side disturbances.\u003c\/p\u003e\n\u003cp\u003eThe module operates with an external 24 V DC power supply and maintains consistent input detection even under fluctuating supply conditions. Its response behavior is optimized for safety logic processing rather than high-speed counting, ensuring reliable state recognition for interlocks, shutdowns, and permissive logic.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\nParameter\n\u003c\/th\u003e\n\u003cth\u003e\nDescription\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nModel\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eSDV144-S53\/B4S00\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nModule Category\n\u003c\/td\u003e\n\u003ctd\u003e\nSafety Digital Input\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nInput Channels\n\u003c\/td\u003e\n\u003ctd\u003e\n16 isolated inputs\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nSupported Signal Type\n\u003c\/td\u003e\n\u003ctd\u003e\nDry \/ no-voltage contact\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nON State Resistance\n\u003c\/td\u003e\n\u003ctd\u003e\n≤ 1 kΩ\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nOFF State Resistance\n\u003c\/td\u003e\n\u003ctd\u003e\n≥ 100 kΩ\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nInput Current\n\u003c\/td\u003e\n\u003ctd\u003e\nApprox. 6 mA at 24 V DC\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nRated Contact Voltage\n\u003c\/td\u003e\n\u003ctd\u003e\n24 V DC (+20% \/ −10%)\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nExternal Supply Requirement\n\u003c\/td\u003e\n\u003ctd\u003e\n24 V DC, approx. 200 mA\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nMaximum Allowable Input Voltage\n\u003c\/td\u003e\n\u003ctd\u003e\n30 V DC (instantaneous)\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nInput Processing Delay\n\u003c\/td\u003e\n\u003ctd\u003e\nMaximum 40 ms\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nIsolation Strength\n\u003c\/td\u003e\n\u003ctd\u003e\n2 kV AC for 1 minute (input to system)\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nMechanical Dimensions\n\u003c\/td\u003e\n\u003ctd\u003e\n130 × 32.8 × 107.5 mm\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nModule Weight\n\u003c\/td\u003e\n\u003ctd\u003e\n​360 g\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\n\u003cstrong\u003eSystem Integration and Reliability\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSDV144-S53\/B4S00\u003c\/strong\u003e is engineered for deployment in redundant safety controller architectures, allowing seamless integration into dual or fault-tolerant SIS designs. Channel isolation and robust insulation ratings contribute to improved system availability and reduced risk of false triggering caused by electrical noise or grounding issues.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThis digital input module is commonly used in environments where safety logic integrity is critical, including emergency shutdown systems, burner management systems, and plant interlocking functions.\u003c\/p\u003e\n\u003cp\u003eCommon industries include oil and gas processing, petrochemical facilities, power generation plants, and large-scale chemical manufacturing.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the SDV144-S53\/B4S00 suitable for Safety Instrumented Systems?\u003c\/strong\u003e\r\nA: Yes. The module is specifically designed for SIS applications and supports redundant configurations and isolated input processing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What type of field signals can be connected?\u003c\/strong\u003e\r\nA: The module accepts dry or no-voltage contact inputs such as limit switches, relay contacts, and safety device outputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module be used in non-safety DCS systems?\u003c\/strong\u003e\r\nA: While optimized for safety systems, it may also be used in standard control architectures where high-reliability digital input monitoring is required, subject to system compatibility.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52761971982621,"sku":"SDV144-S53\/B4S00","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/SDV144-S53-B4S00-2_1000.jpg?v=1787216366","url":"https:\/\/www.6gcontrols.com\/pl\/products\/yokogawa-sdv144-s53-b4s00-safety-digital-input-module","provider":"6G Controls","version":"1.0","type":"link"}