{"product_id":"nfai835-s50-yokogawa-prosafe-rs-analog-input-output-module","title":"NFAI835-S50 | Yokogawa| ProSafe-RS Analog Input\/Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa NFAI835-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-performance, combined analog interface for the ProSafe-RS safety instrumented system. This versatile module integrates 4-channel inputs and 4-channel outputs within a single hardware footprint, managing critical 4 to 20 mA signals for both monitoring and control loops. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, ensuring absolute signal fidelity and compliance with the stringent safety requirements of global industrial process facilities.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eCode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\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\u003eNFAI835\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eModel Series\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIsolated 4-channel Input \/ 4-channel Output Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-S\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard type for ProSafe-RS configurations\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStyle Code\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStyle 5 hardware revision for enhanced bus stability\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e0\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConfiguration\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBasic specification with standard terminal options\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\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\u003eI\/O Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4-Channel Input \/ 4-Channel Output (Isolated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA DC (Input \u0026amp; Output)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Accuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cspan class=\"math-inline\"\u003e$\\pm 0.1\\%$\u003c\/span\u003e of full scale\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Accuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cspan class=\"math-inline\"\u003e$\\pm 0.3\\%$\u003c\/span\u003e of full scale\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eData Refresh Cycle\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 ms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWithstanding Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500 V AC for 1 minute (Channel-to-System\/Channel-to-Channel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eLoad Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 750 \u003cspan class=\"math-inline\"\u003e$\\Omega$\u003c\/span\u003e (Outputs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStep Response Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100 ms (Input \u0026amp; Output)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Current Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e360 mA (5 V DC) \/ 450 mA (24 V DC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.3 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Hardware Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy combining four inputs and four outputs on a single module, the NFAI835-S50 effectively halves the required rack space for standard control loops. This high-density architecture simplifies cabinet layouts and reduces the overall system footprint in crowded technical rooms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Galvanic Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module provides 500 V AC isolation between all channels and between the I\/O circuitry and the system backplane. This protects the safety controller from ground loops and prevents electrical noise from propagating across the bus, a critical requirement for maintaining SIL3 integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComprehensive Diagnostic Coverage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated circuit-open detection triggers at 0.65 mA or less, allowing the system to identify broken wire faults immediately. Furthermore, overcurrent protection safeguards the hardware against field wiring errors or transmitter failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Response Timing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA 10 ms data refresh cycle combined with 100 ms step response times ensures the ProSafe-RS system reacts to process deviations with the speed required for emergency shutdown (ESD) and fire and gas (F\u0026amp;G) applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the NFAI835-S50 provide power to field transmitters?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes. The module includes a transmitter power supply ranging from 20.2 to 29.3 V DC. It effectively powers 2-wire transmitters directly, eliminating the need for external power distribution blocks for these channels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle a processor failure?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe \"Output Fallback\" feature allows engineers to pre-set a safe state for each output channel. In the event of a communication loss or processor fault, each channel independently reverts to its designated fallback value (e.g., 4mA or 0mA) to ensure process safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of field connection hardware does it support?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module supports both pressure clamp terminals for direct field wiring and MIL connector cables for centralized marshalling. This flexibility allows for rapid deployment in both new builds and legacy system upgrades.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module suitable for high-temperature environments?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe NFAI835-S50 features a maximum temperature drift of only\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\pm 0.01\\%\/^\\circ\\text{C}$\u003c\/span\u003e. This stability ensures high accuracy across the standard operating temperature range, even in cabinets subject to minor thermal fluctuations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52777691775285,"sku":"NFAI835-S50","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/NFAI135-S00_5bb2d899-dbbf-477e-a76a-5b4106c21527.png?v=1776928045","url":"https:\/\/www.5gplc.com\/products\/nfai835-s50-yokogawa-prosafe-rs-analog-input-output-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}