{"product_id":"abb-dp840-pulse-counter-module","title":"ABB DP840 Pulse Counter Module","description":"\u003cp\u003eThe \u003cstrong\u003eABB DP840\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDP840\u003c\/strong\u003e Pulse Counter Module, operates as a dedicated hardware component for high-accuracy frequency processing and pulse-train accumulation within S800 I\/O automation platforms. This 8-channel specialized instrumentation assembly, under article number \u003cstrong\u003e3BSE028926R1\u003c\/strong\u003e, reads 24 VDC discrete signal transitions directly from field-side sensors and encoders to update upstream controller logic banks with precise speed, position, or flow data.\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\u003eDP840\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFactory Standard European Site\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 kg (0.33 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e45 mm x 119 mm x 102 mm (111 mm depth including connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eFactory standard industrial ambient window\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e4 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e115 mA (+5 V Modulebus internal draw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal 24V Current Draw\u003c\/td\u003e\n\u003ctd\u003e97 mA + external load (Base variations for NAMUR\/12V modes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e8 independent processing channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Specification\u003c\/td\u003e\n\u003ctd\u003e24 VDC (19.2 to 32 VDC operational limits)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Support\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Isolation\u003c\/td\u003e\n\u003ctd\u003eGroupwise isolated from mechanical ground planes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Absolute Error\u003c\/td\u003e\n\u003ctd\u003e500 ppm (0.05% threshold, PRIT = 10 ms, age \u0026lt; 16 years)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Field Cable Length\u003c\/td\u003e\n\u003ctd\u003e200 meters (218 yards)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Insulation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Test Voltage\u003c\/td\u003e\n\u003ctd\u003e500 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanics \/ Form Factor\u003c\/td\u003e\n\u003ctd\u003eS800 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control and Drives Dedicated I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe DP840 manages real-time frequency calculation tables and hardware-gated pulse accumulation matrices directly over the system's distribution backplane. To resolve high-speed edge transitions across all 8 channels concurrently without processing cycle bottlenecks, the internal hardware counter circuitry optimizes backplane bus communication velocity across the S800 Modulebus line. This decentralized calculation structure offloads high-frequency interrupt processing from the main CPU, directly supporting deterministic loop timing rules and expanding localized physical I\/O density scaling options within central marshalling cubicles. Because the internal crystal oscillator updates time-stamp intervals down to 10 ms windows with precision tolerances, the module maintains absolute firmware flash compatibility with upstream engineering masters, ensuring that pulse filtering constants, frequency scaling curves, and preset rollover values download over the bus lines without causing signal transit noise or communication timeouts.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":47594978246846,"sku":"DP840","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/98d64504d8995ee2aa0707e19788490d_0228312f-6c93-4884-bde2-eb6db3e5a4d1.png?v=1780284798","url":"https:\/\/www.autooiltech.com\/products\/abb-dp840-pulse-counter-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}