{"product_id":"yokogawa-nfaf135-s00-prosafe-rs-frequency-input-module","title":"Yokogawa NFAF135-S00 ProSafe-RS Frequency Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa NFAF135-S00\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-precision frequency acquisition interface for the ProSafe-RS safety instrumented system. This module captures and processes frequency signals from field devices such as turbine flowmeters, speed sensors, and pulse generators. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, ensuring absolute signal integrity and compliance with rigorous safety standards for critical process monitoring.\u003c\/p\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\u003eNumber of Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 isolated channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Frequency Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.1 Hz to 10 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Accuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.1% of reading\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Signal Types\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eContact ON\/OFF, Voltage Pulse (rectangular)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMin. Pulse Width\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40 \u003cspan class=\"math-inline\"\u003e$\\mu$\u003c\/span\u003es\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 (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\u003eInternal Power Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e300 mA (5 V DC) \/ 400 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\u003eSuperior Galvanic Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe NFAF135-S00 provides 500 V AC isolation between individual channels and between the field inputs and the system bus. This architecture prevents ground loops and protects the internal safety logic from high-voltage transients common in industrial motor control centers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Response Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA 10 ms data refresh cycle ensures the safety station reacts instantly to speed fluctuations or flow surges. This high-speed processing allows for the implementation of precise overspeed protection and emergency shutdown (ESD) triggers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Input Signal Conditioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module accepts both dry contact and voltage pulse inputs. Internal selectable shunt (1000\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\Omega$\u003c\/span\u003e) and pull-up (68 k$\\Omega$) resistors allow engineers to interface directly with various sensor types without requiring external signal conditioning hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Noise Rejection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy utilizing a 40\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\mu$\u003c\/span\u003es minimum input pulse width filter, the hardware effectively ignores high-frequency electromagnetic interference (EMI). This ensures the PLC counts only legitimate process pulses, maintaining accuracy even in proximity to high-power variable frequency drives (VFDs).\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\u003eWhat type of field power supply does this module require?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe NFAF135-S00 allows you to select between 12 V DC and 24 V DC for the field power supply. Ensure your configuration matches the voltage requirements of your connected transmitters to avoid signal clipping or hardware damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this module for high-speed turbine speed sensing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 10 kHz input limit and 0.1% accuracy make it ideal for monitoring turbine rotation speeds. For safety-critical overspeed protection, we recommend utilizing the module within a redundant ProSafe-RS architecture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module support MIL-standard cabling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module offers two connection options: pressure clamp terminals for direct field wiring and MIL connector cables for rapid, centralized marshalling cabinet integration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle signal loss?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ProSafe-RS system diagnostics monitor the NFAF135-S00 continuously. If a signal falls outside the 0.1 Hz to 10 kHz range or the field power supply fails, the module immediately flags a diagnostic error to the safety controller for programmed fail-safe action.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52777681486133,"sku":"NFAF135-S00","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/NFDV151-P10_034e3b40-5dc0-439b-b160-8941aa9f17c0.png?v=1776927842","url":"https:\/\/www.5gplc.com\/products\/yokogawa-nfaf135-s00-prosafe-rs-frequency-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}