{"product_id":"yokogawa-aap149-s50-pulse-input-module","title":"YOKOGAWA AAP149-S50 Pulse Input Module","description":"\u003cp\u003eConfigured for high-speed pulse acquisition in distributed control system (DCS) platforms, the \u003cstrong\u003eYOKOGAWA AAP149-S50\u003c\/strong\u003e (\u003cstrong\u003eAAP149\u003c\/strong\u003e Pulse Input Module) provides direct physical pulse counting and frequency measurement execution.\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\u003eAAP149-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\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e400 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e16 non-isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003eTransistor contact (open collector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e0 to 6 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Period\u003c\/td\u003e\n\u003ctd\u003e2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eDCS Process Control and Pulse Detection\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA AAP149-S50\u003c\/strong\u003e functions as the primary \u003cstrong\u003eAAP149\u003c\/strong\u003e Pulse Input Module utilized to execute high-speed pulse counting and frequency signal conversion across \u003cstrong\u003eCENTUM VP\u003c\/strong\u003e and \u003cstrong\u003eCENTUM CS 3000\u003c\/strong\u003e platforms. The module architecture features 16 non-isolated input channels designed to process transistor contact or open collector signals. Data acquisition is performed with a 2 ms update period, and the input logic is configured specifically for trailing-edge pulse detection. This direct physical interface allows the DCS to monitor rapid field device activity with deterministic timing, ensuring that pulse-based measurements are synchronized with the overall control loop execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the AAP149-S50 require external signal conditioning for open collector sensors? A: No, the module is designed to accept open collector transistor contact signals directly. Ensure the field device switching voltage is compatible with the module's input circuitry requirements.\u003c\/p\u003e\n\u003cp\u003eQ: Are the 16 input channels galvanically isolated? A: No, the AAP149-S50 utilizes a non-isolated architecture. All connected field devices must share a common reference ground to maintain measurement integrity and prevent potential electrical damage.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that all field wiring is routed independently from high-voltage power lines to prevent induced noise on the pulse input channels.\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for all signal connections; the shield must be grounded at the field junction or the designated cabinet ground bus to mitigate electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eEnsure the module is firmly seated into the backplane connector before power-up to establish a stable communication link with the DCS controller.\u003c\/li\u003e\n\u003cli\u003eCheck that the total current draw for external sensor excitation does not exceed the power supply limits of the module or the associated backplane segment.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49221425955068,"sku":"AAP149-S50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/AAI543-H50.jpg?v=1779933630","url":"https:\/\/www.electronicplc.com\/products\/yokogawa-aap149-s50-pulse-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}