{"product_id":"yokogawa-nfaf135-s50-nfaf135-s50-s1-16-channel-analog-input-card","title":"Yokogawa NFAF135-S50 NFAF135-S50 S1 16-Channel Analog Input Card","description":"\u003ch2\u003eYokogawa NFAF135-S50 S1 FIO Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa NFAF135-S50 S1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNFAF135\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for analog signal acquisition from field transmitters within CENTUM VP \/ CS 3000 FIO platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe NFAF135 series utilizes specific suffix configurations to define its hardware protection, environmental ratings, and electrical interface limits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model (NFAF135):\u003c\/strong\u003e Defines a multi-channel analog input module interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType Suffix (-S):\u003c\/strong\u003e Specifies standard signal processing configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Suffix (5):\u003c\/strong\u003e Establishes compliance with ISA G3 corrosion parameters, allowing deployment in harsh atmospheric conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplosion Protection Suffix (0):\u003c\/strong\u003e Identifies a design without intrinsic safety protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eNFAF135-S50 S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Yokogawa FIO module dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e230 mA (at 5 V DC), 540 mA (at 24 V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003ePlus or minus 16 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003ePlus or minus 16 uA per 10 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e1500 V AC between input and system for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Integration and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThis module features a high-density 16-channel architecture with galvanic isolation designed to protect system backplanes from external electrical surges up to 1500 V AC. It supports the 4-20 mA DC loop standard, reading signals with a baseline accuracy of plus or minus 16 uA. By incorporating 250 to 350 Ohm internal input impedance during power-on states, the module accurately converts analog current inputs into digital system parameters. This design limits signal crosstalk and ensures stable transmitter loop execution under transient voltage swings on adjacent field lines.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What happens to the module input impedance if the system backplane experiences a power failure?\u003c\/p\u003e\n\u003cp\u003eA: During normal power-on operations, input impedance registers between 250 and 350 Ohm. If the system undergoes a power-off state, the input impedance automatically shifts to a minimum of 500 kOhm to prevent signal feedback and loop loading.\u003c\/p\u003e\n\u003cp\u003eQ: Can this module provide power to 2-wire transmitters, and what are the power limitations?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the NFAF135-S50 provides a transmitter power supply rated between 19.0 and 25.5 V DC, with a hardware current-limit function set at 25 mA per channel to protect against direct short-circuits.\u003c\/p\u003e\n\u003cp\u003eQ: How does operating this module at high thermal limits affect calibration accuracy?\u003c\/p\u003e\n\u003cp\u003eA: The baseline accuracy of plus or minus 16 uA is verified at standard reference temperatures. For every 10 deg C deviation from the baseline across the -20 to 70 deg C operating window, an additional drift of plus or minus 16 uA must be added to the calculation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding Ground Connection:\u003c\/strong\u003e Connect all instrument cable drain wires to the system cabinet's dedicated ground bar, maintaining a single-point grounding design to prevent common-mode noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosive Gas Protection:\u003c\/strong\u003e Ensure the host cabinet door remains closed and sealed to optimize the protection provided by the ISA G3 conformal coating against atmospheric corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Cable Isolation:\u003c\/strong\u003e Route the KS1 signal cables through separate, grounded metallic wire ways to isolate weak analog input signals from high-current AC motor supply lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screws Torque:\u003c\/strong\u003e Secure the field wire terminations on the pressure clamp block, verifying that terminal screws are tightened to the specified torque limit to prevent loose connections in the 4-20 mA current loops.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43665134288986,"sku":"NFAF135-S50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/561..jpg?v=1784182459","url":"https:\/\/www.spareoil.com\/ar\/products\/yokogawa-nfaf135-s50-nfaf135-s50-s1-16-channel-analog-input-card","provider":"SpareOil Automation","version":"1.0","type":"link"}