{"product_id":"nfaf135-s50-stardom-yokogawa-frequency-input-module","title":"NFAF135-S50 STARDOM Yokogawa Frequency Input Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa NFAF135-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-precision frequency measurement gateway within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSTARDOM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eautonomous controller architecture. This module captures complex pulse signals from turbine flowmeters, speed sensors, and various industrial transducers with exceptional accuracy. By converting raw frequency data into actionable digital intelligence, it enables real-time monitoring of critical rotating equipment and fluid dynamics. Engineers rely on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNFAF135-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor its robust signal conditioning capabilities, ensuring that high-speed transients are captured without loss of data integrity. Its seamless integration into the modular FCN\/FCJ controllers provides a scalable solution for demanding process environments where millisecond precision determines operational safety and efficiency.\u003c\/p\u003e\n\u003ch2\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNFAF135-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efollows a specific functional suffix logic within the Yokogawa STARDOM I\/O ecosystem. Understanding these designations ensures correct hardware matching for your control cabinet.\u003c\/p\u003e\n\u003ch3\u003eModel Suffix Analysis: NFAF135-S50\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNFAF135\u003c\/strong\u003e: This designates the core Frequency Input Module series, specifically engineered for the FCN (Field Control Node) modular stations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e-S\u003c\/strong\u003e: Indicates a Standard Type module, optimized for general industrial environmental conditions and standard mounting configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e5\u003c\/strong\u003e: Represents the specific hardware revision or internal performance tier, optimized for a frequency range up to 100 kHz.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e0\u003c\/strong\u003e: Denotes the basic functional style without specialized conformal coating or extreme-environment hardening.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003eSpecification\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYokogawa\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNFAF135-S50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8-Channel (isolated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.1 Hz to 100 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e±0.01% of full scale\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Signal Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVoltage pulses, contact signals, or NAMUR\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1500V AC between input and internal logic\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20°C to +70°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 VDC (within module bus limits)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions (W x H x D)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e33 mm x 130 mm x 128 mm\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\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNFAF135-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexcels in environments where standard PLC counters fail. Its onboard microprocessor handles signal filtering independently, offloading intensive calculation tasks from the main CPU. This architecture ensures that frequency-to-velocity conversions remain accurate even during rapid machine acceleration.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the module features advanced diagnostic capabilities. It detects open circuits and short circuits in the field wiring immediately, reporting faults through the STARDOM software environment. Its ruggedized internal circuitry resists the thermal stresses typical of power generation and petrochemical control rooms, providing a MTBF (Mean Time Between Failure) that exceeds industry standards.\u003c\/p\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003cp\u003eSuccessful deployment of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNFAF135-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequires strict adherence to signal integrity protocols to prevent EMI interference.\u003c\/p\u003e\n\u003ch3\u003eSignal Wiring and Grounding\u003c\/h3\u003e\n\u003cp\u003eAlways utilize shielded twisted-pair (STP) cabling for frequency inputs. Connect the shield at the module end to the functional ground terminal to mitigate high-frequency noise. Maintain a minimum bending radius of 50mm for signal cables to prevent internal conductor fatigue.\u003c\/p\u003e\n\u003ch3\u003eInput Level Calibration\u003c\/h3\u003e\n\u003cp\u003eEnsure the input pulse voltage aligns with the module's threshold settings. If using magnetic pickup sensors, verify that the signal amplitude remains above 0.5V peak-to-peak during low-speed rotations to prevent signal dropout.\u003c\/p\u003e\n\u003ch3\u003eHot-Swapping Protocols\u003c\/h3\u003e\n\u003cp\u003eThe STARDOM FCN backplane supports hot-swapping; however, engineers should ensure the \"Ready\" LED is inactive before physical extraction to prevent bus communication errors.\u003c\/p\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Does the NFAF135-S50 support NAMUR sensor inputs directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: Yes. The module hardware supports direct connection to NAMUR-compliant proximity sensors, providing the necessary current sensing to detect both pulses and wiring faults.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What is the maximum cable length supported for high-frequency signals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: For frequencies approaching 100 kHz, we recommend limiting cable runs to 100 meters using high-quality low-capacitance shielded cable to avoid signal attenuation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can this module be used for totalization and flow measurement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: Absolutely. While it functions as a frequency input, the STARDOM logic handles high-speed pulse integration, making it ideal for turbine flowmeter applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How does the NFAF135-S50 handle signal noise in high-voltage environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: The module incorporates programmable digital filters and high-grade optoisolators, effectively stripping away 50\/60 Hz interference and high-frequency spikes from the measurement path.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":45897929916589,"sku":"NFAF135-S50","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/yokogawa_nfaf135-s50_12.jpg?v=1775701463","url":"https:\/\/www.maxwellplc.com\/products\/nfaf135-s50-stardom-yokogawa-frequency-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}