{"product_id":"a2h254-16-p0973bk-foxboro-i-a-series-datasheet-technical-manual","title":"A2H254-16 P0973BK Foxboro I\/A Series Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eFoxboro A2H254-16 P0973BK Termination Assembly\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro A2H254-16 P0973BK\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eA2H254-16\u003c\/strong\u003e Termination Assembly, operates as a dedicated hardware component for field device signal termination within Foxboro I\/A Series platforms. Configured for physical wiring convergence, the hardware provides direct physical\/electrical execution for 16-channel I\/O distribution blocks, routing field instrumentation signals straight into matching modular backplane slots.\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\u003eA2H254-16 P0973BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45 x 102 x 104 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (determined by connected FBM load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eFoxboro I\/A Series FBM modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eProvides wiring interface between FBMs and field devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Terminals\u003c\/td\u003e\n\u003ctd\u003e16-channel terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types Supported\u003c\/td\u003e\n\u003ctd\u003eAnalog input\/output, digital input\/output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Method\u003c\/td\u003e\n\u003ctd\u003eScrew-clamp or spring-clamp terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-ground (via FBM design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003eUp to 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA, IEC 61131-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; DCS Terminal Properties\u003c\/h3\u003e\n\u003cp\u003eThe assembly incorporates separate channel tracks supporting native 4-20 mA HART loop protocol routing and high-density discrete point configurations. It utilizes independent terminal allocations per channel to complement the galvanic channel-to-channel isolation architecture built into the companion Fieldbus Modules (FBMs). The rugged physical trace layout resists high-frequency industrial electrical noise and common-mode current loops, maintaining signal verification limits across continuous analog and digital process loops without passive drift.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hardware asset contain active power-limiting circuits or processors?\u003c\/strong\u003e A: No, this termination assembly is a passive electrical interface component. It does not contain an independent microprocessing unit or internal firmware flash blocks; all operating limits and electrical requirements are dictated by the hosting FBM architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this assembly affect hot-swappable installation routines of upstream FBM cards?\u003c\/strong\u003e A: The terminal block connects via permanent carrier cables to the module baseplate, meaning field instrumentation wiring remains undisturbed. This specific physical segregation allows operators to perform hot-swappable replacement of active FBM cards without opening any field loop switches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this terminal block configuration mix different signal classifications simultaneously?\u003c\/strong\u003e A: The physical terminal blocks accept both voltage and current ranges for analog or digital configurations. However, the exact deployment is strictly limited by the specific companion FBM module variety; mixed signaling across one board requires an explicit matching split-signal module mapping.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaseplate and Rail Securement:\u003c\/strong\u003e Fit the terminal track assembly tightly onto a standard symmetric DIN rail or specialized mounting frame. Verify that the chassis-ground spring clips make solid metal-to-metal contact with the zinc-plated or steel rail to guarantee transient voltage draining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminal Integrity:\u003c\/strong\u003e Strip all field conductor ends back exactly 8 mm before placing them inside the screw-clamp mechanisms. Tighten every terminal screw according to standard industrial torque levels to eliminate localized micro-arcing and signal attenuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Topology:\u003c\/strong\u003e Connect all individual 4-20 mA sensor signal shield wires directly to the common instrumentation bus bar at the panel entry base. Avoid ground loops by keeping sensor fields ungrounded at the terminal junction point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparation Matrix:\u003c\/strong\u003e Segregate field cables inside the terminal enclosure. Separate the low-voltage analog signal cables from inductive AC power supply links or high-current mechanical motor relay paths by at least 30 cm.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43462537052250,"sku":"A2H254-16 P0973BK","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/427._94d58cf4-c721-40cd-a59a-cf1a58f06001.jpg?v=1780890030","url":"https:\/\/www.spareoil.com\/products\/a2h254-16-p0973bk-foxboro-i-a-series-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}