{"product_id":"foxboro-ad205mb-i-a-series-high-density-analog-input-module","title":"Foxboro AD205MB I\/A Series High-Density Analog Input Module","description":"\u003ch2\u003eFoxboro AD205MB I\/A Series High-Density Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro AD205MB\u003c\/strong\u003e serves as the primary \u003cstrong\u003eAD205MB\u003c\/strong\u003e Analog Input Module utilized to execute high-density analog signal acquisition and conditioning across Foxboro I\/A Series DCS platforms.\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\u003eAD205MB\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\u003e0.27 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Foxboro I\/A Series Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMax approx 8.5 W per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003eUp to 32 analog inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Signal Types\u003c\/td\u003e\n\u003ctd\u003eVoltage (-32 V to +32 V), Current (-20 mA to +20 mA), RTDs, Thermocouples\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Resolution\u003c\/td\u003e\n\u003ctd\u003e16-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Scan Rate\u003c\/td\u003e\n\u003ctd\u003eApprox 250 ms per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB SDRAM, 32 MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Input\u003c\/td\u003e\n\u003ctd\u003e24 VDC (supports redundant supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eSingle processor; fault-tolerant requires dual modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eCold Junction Compensation and 4-20 mA HART Loop Protocol\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro AD205MB\u003c\/strong\u003e executes high-density analog signal digitization across 32 individual channels, converting voltage, current, RTD, and thermocouple field inputs into 16-bit digital values. Built-in cold junction compensation (CJC) circuits stabilize millivolt-level thermocouple readings against local ambient terminal temperature shifts. Robust channel-to-channel isolation prevents ground loop potential differences between field field transmitters, maintaining 4-20 mA HART loop protocol signal resolution across high-noise industrial enclosures before forwarding process parameters over the system backplane.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the AD205MB execute fault-tolerant operation in a Foxboro I\/A Series baseplate?\u003c\/p\u003e\n\u003cp\u003eA: Fault tolerance requires installing two AD205MB modules side-by-side in a dedicated redundant baseplate slot, allowing the active module to execute real-time mirror processing with the backup unit.\u003c\/p\u003e\n\u003cp\u003eQ: What mechanisms protect signal accuracy when measuring thermocouple inputs?\u003c\/p\u003e\n\u003cp\u003eA: Integrated cold junction compensation sensors on the terminal assembly continuously monitor reference point thermal drift, allowing the onboard processor to adjust 16-bit conversion matrices automatically.\u003c\/p\u003e\n\u003cp\u003eQ: Can the module draw operating power from dual independent 24 VDC supply buses?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The unit incorporates internal diode-ORing logic that accepts primary and secondary 24 VDC power feeds simultaneously to maintain uninterrupted circuit operation during feed line failures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Power Disconnection\u003c\/strong\u003e: Turn off all 24 VDC power sources to the cabinet before mounting or pulling modules from the system baseplate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Frame Grounding\u003c\/strong\u003e: Route a thick copper grounding wire from the panel ground stud directly to the main system earth bus bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cable Shield Termination\u003c\/strong\u003e: Strip analog cable shields and clamp drain wires securely to the designated panel grounding bar to drain high-frequency electrical noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate Cable Runs\u003c\/strong\u003e: Place sensitive thermocouple and analog input lines in distinct wiring ducts separated from AC motor power cables and high-voltage switching circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaseplate Slot Insertion\u003c\/strong\u003e: Guide the module card edges smoothly into the mounting rack until the backplane connector locks into the baseplate receptacle.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43841667268707,"sku":"AD205MB","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/173_c1159bb5-5943-4e24-8492-aaa708fd98f2.jpg?v=1763435426","url":"https:\/\/www.autocontrolglobal.com\/products\/foxboro-ad205mb-i-a-series-high-density-analog-input-module","provider":"AutoControl Global","version":"1.0","type":"link"}