{"product_id":"pulse-input-module-yokogawa-nfap135-s50","title":"Pulse Input Module | Yokogawa NFAP135-S50","description":"\u003ch2\u003eYokogawa NFAP135-S50 Pulse Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for pulse signal acquisition in STARDOM FCN\/FCJ controller networks, the \u003cstrong\u003eYokogawa NFAP135-S50\u003c\/strong\u003e (\u003cstrong\u003eNFAP135-S50\u003c\/strong\u003e Pulse Input Module) provides direct electrical execution of isolated pulse counting and event capture across distributed I\/O architectures. The module processes contact, voltage, and current pulse inputs via fully isolated channels with high-speed digital sampling.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eNFAP135-S50 is a fixed configuration model identifier. No formal suffix segmentation or functional matrix decomposition is defined by the manufacturer for variant derivation.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eYokogawa NFAP135-S50\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003e8-Channel Pulse Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8 channels, electrically isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Types\u003c\/td\u003e\n\u003ctd\u003eContact ON\/OFF, voltage pulse, current pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency Range\u003c\/td\u003e\n\u003ctd\u003eUp to 50 MHz per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Pulse Width\u003c\/td\u003e\n\u003ctd\u003e40 us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-system galvanic isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Input Resistance\u003c\/td\u003e\n\u003ctd\u003eOpen \u0026gt;= 100 kOhm \/ Close \u0026lt;= 200 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePull-up Resistance\u003c\/td\u003e\n\u003ctd\u003e68 kOhm (12 VDC \/ 24 VDC operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShunt Resistance\u003c\/td\u003e\n\u003ctd\u003eOFF \/ 200 \/ 500 \/ 1000 ohm selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Refresh Cycle\u003c\/td\u003e\n\u003ctd\u003e2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply\u003c\/td\u003e\n\u003ctd\u003e12 VDC +\/-10% or 24 VDC +\/-10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC: 300 mA \/ 24 VDC: 400 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degC to +60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482 mm (W) x 210 mm (H) x 220 mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003ePressure clamp terminal block \/ 40-pin MIL connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eChannel Isolation and Pulse Integrity Architecture\u003c\/h2\u003e\n\u003cp\u003eThe NFAP135-S50 implements independent galvanic isolation barriers per channel, eliminating inter-channel ground coupling under high-density switching conditions. In Yokogawa process I\/O architectures, this isolation layer is aligned with distributed signal conditioning practice similar to FOUNDATION Fieldbus segment separation principles, ensuring that pulse edge distortion, loop interference, and return-path modulation are contained at channel level. The input stage supports high-speed edge detection while maintaining deterministic sampling stability under electrically noisy field wiring conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the NFAP135-S50 operate with hot-swapped field wiring under live backplane power?\u003c\/strong\u003e\u003cbr\u003eA: The module supports system-side hot insertion depending on STARDOM base unit configuration, but field terminals must not be re-wired under energized input conditions due to pulse integrity risk.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does channel-to-channel isolation eliminate cross-talk at high frequency operation?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Each input channel is galvanically separated, reducing capacitive coupling and suppressing cross-channel pulse interference under high-density switching loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the limiting factor for maximum pulse frequency per channel?\u003c\/strong\u003e\u003cbr\u003eA: The limiting factor is internal sampling resolution and input conditioning circuitry rather than field wiring, with stated support up to 50 MHz per channel.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eShielded twisted pair wiring is required for all pulse input lines. Cable shields shall be terminated at a single-point ground on the control cabinet side to prevent ground loop formation. Input cables must be separated from high-voltage and VFD output lines by a minimum segregation distance defined by IEC industrial wiring practice. Terminal torque shall follow Yokogawa terminal block mechanical limits to ensure stable contact pressure on pressure clamp interfaces. Avoid parallel routing with power conductors exceeding 24 VDC switching levels over extended distances.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44163806101592,"sku":"NFAP135-S50","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/NFAP135-S50-3.jpg?v=1780304525","url":"https:\/\/www.industriaxplc.com\/products\/pulse-input-module-yokogawa-nfap135-s50","provider":"IndustriaX Limited","version":"1.0","type":"link"}