{"product_id":"nfai141-s00-s1-yokogawa-16-channel-analog-input-module","title":"NFAI141-S00 S1 Yokogawa 16-Channel Analog Input Module","description":"\u003ch2\u003eYokogawa NFAI141-S00 S1 Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for multi-channel analog signal evaluation in Yokogawa STARDOM autonomous controller platforms, the \u003cstrong\u003eYokogawa NFAI141-S00 S1\u003c\/strong\u003e (\u003cstrong\u003eNFAI141-S00\u003c\/strong\u003e Analog Input Module) provides direct physical\/electrical execution. This 16-channel non-isolated module digitizes 4-20 mA DC and 1-5 V DC instrumentation loops, updating controller memory registers over the backplane bus every 10 ms. The unit supplies 22.8 to 26.4 V DC loop power directly to field transmitters while protecting internal electronics via an integrated 27 mA current limiter.\u003c\/p\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\u003eNFAI141-S00 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\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 channels, non-isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Types\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC, 1-5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\/Voltage\u003c\/td\u003e\n\u003ctd\u003e27 mA DC \/ +\/-7.5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003e250 ohm (Power ON), 500 kohm or more (Power OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Refresh Cycle\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Step Response Time\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Power Supply Output\u003c\/td\u003e\n\u003ctd\u003e22.8 V DC to 26.4 V DC (Output current limit: 27 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003eMaximum +\/-0.01% per deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e310 mA at 5 V DC, 450 mA at 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard STARDOM module form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Fieldbus Integration\u003c\/h3\u003e\n\u003cp\u003eThe NFAI141-S00 S1 integrates 4-20 mA HART loop protocol pass-through capability, allowing the module to overlay digital bi-directional communication onto analog measurement signals. By maintaining an internal input resistance of 250 ohm during powered operation, the circuit preserves signal integrity for digital frequency-shift keying (FSK) HART signals while maintaining a 100 ms step response time for process variables. The non-isolated channel architecture routes 16 process loops into a single high-density node, reducing backplane footprint while providing stable cold junction compensation (CJC) references and signal conversion metrics across process control networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module input impedance react when backplane power is removed?\u003c\/p\u003e\n\u003cp\u003eA: When system power is ON, the channel input resistance maintains a 250 ohm load to process the current loop. When backplane power is turned OFF, internal switching raises the channel input resistance to 500 kohm or more, preventing current drain on connected transmitter loops during system shutdown.\u003c\/p\u003e\n\u003cp\u003eQ: Can the internal transmitter power supply drive 2-wire field transmitters directly?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module delivers an integrated auxiliary transmitter power supply ranging from 22.8 to 26.4 V DC per channel. The internal circuit features a hardware current limit set to 27 mA to safeguard the module during field wiring shorts or transmitter fault conditions.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module support hot-swapping during active controller operation?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping depends on the field terminal block configuration. When mounted with compatible pressure-clamp or MIL-connector terminal units, field technicians can remove the module without disconnecting field wiring, provided system installation rules for STARDOM backplanes are observed.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Board Wiring:\u003c\/strong\u003e Route all 4-20 mA and 1-5 V DC field cables through pressure-clamp terminals or pre-assembled MIL-connector assemblies. Ensure tight screw torque on terminal clamps to avoid high-resistance signal drift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding:\u003c\/strong\u003e Terminate overall cable shields at a single ground bar near the base of the control cabinet. Keep shield drains floating at the transmitter end to eliminate ground loop currents across the non-isolated channel banks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparation of Signal Lines:\u003c\/strong\u003e Maintain a minimum clear distance of 200 mm between 24 V DC signal cables and high-voltage AC power distribution or drive output cables to prevent inductive interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Integrity:\u003c\/strong\u003e Verify that the incoming 24 V DC field power supply stays strictly within the 22.8 to 26.4 V DC window under full 16-channel load conditions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43796188528730,"sku":"NFAI141-S00 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/747.jpg?v=1786064154","url":"https:\/\/www.spareoil.com\/es\/products\/nfai141-s00-s1-yokogawa-16-channel-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}