{"product_id":"allen-bradley-1794-ib16xt-flex-i-o-extended-temperature-digital-sinking-input-module","title":"Allen-Bradley 1794-IB16XT FLEX I\/O Extended Temperature Digital Sinking Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1794-IB16XT\u003c\/strong\u003e is a ruggedized high-density discrete input module engineered for the \u003cstrong\u003eFLEX I\/O\u003c\/strong\u003e distributed network terminal platform. This specialized module functions as a 24V DC binary status processor, designed to monitor and translate digital signals from field sensing devices under extreme environmental conditions. Operating within a sinking current configuration, the internal electronics channel current from sourcing field-side switches through its sensing nodes to a centralized common return rail, maintaining clean status register processing across open control network systems.\u003c\/p\u003e\n\u003cp\u003eAs an \u003cstrong\u003eXT\u003c\/strong\u003e (Extended Temperature) variant, this industrial hardware block incorporates resilient component architectures and factory conformal coating to withstand thermal shifts ranging from \u003cstrong\u003e-20 to 70 Celsius\u003c\/strong\u003e. Armed with sixteen non-isolated channels, the device scales installation densities inside compact distributed control enclosures. The \u003cstrong\u003e1794-IB16XT\u003c\/strong\u003e executes data data routing back to master programmable logic controllers by communicating through standard network adapters over \u003cstrong\u003eEtherNet\/IP\u003c\/strong\u003e, \u003cstrong\u003eControlNet\u003c\/strong\u003e, or \u003cstrong\u003eDeviceNet\u003c\/strong\u003e system buses. It is standard across oil and gas upstream stations, marine propulsion engine rooms, pipeline telemetry systems, and heavy mineral milling installations requiring continuous uptime in unconditioned environments.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExtreme thermal performance scaling safely from -20 to 70 Celsius.\u003c\/li\u003e\n\u003cli\u003eFactory applied conformal coating protecting internal substrates from moisture and airborne chemical agents.\u003c\/li\u003e\n\u003cli\u003eSixteen high-density discrete sinking inputs for maximum I\/O count optimization per rail segment.\u003c\/li\u003e\n\u003cli\u003eRemoval and Insertion Under Power (RIUP) allowing live replacement without halting adjacent bus traffic.\u003c\/li\u003e\n\u003cli\u003eMulti-point front-panel LED indicators providing visual diagnostic logging of individual channel logic states.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMidstream pipeline pumping station switch monitoring in unconditioned field cabinets.\u003c\/li\u003e\n\u003cli\u003eOffshore drilling infrastructure emergency status and valve position tracking.\u003c\/li\u003e\n\u003cli\u003eHeavy machinery mining excavations subject to high ambient thermal fluctuations.\u003c\/li\u003e\n\u003cli\u003eOutdoor water treatment wastewater aeration station control loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation \/ Allen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O XT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1794-IB16XT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eExtended Temperature Digital Sinking Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 Channels, Non-Isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10V DC to 31.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Current Range\u003c\/td\u003e\n\u003ctd\u003e2.0 mA minimum to 12.0 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal On-State Current\u003c\/td\u003e\n\u003ctd\u003e8.0 mA at 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage Maximum\u003c\/td\u003e\n\u003ctd\u003e5.0V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current Maximum\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Impedance\u003c\/td\u003e\n\u003ctd\u003e4.6 kilohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Current Draw\u003c\/td\u003e\n\u003ctd\u003e30 mA at 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Isolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50V (Basic Insulation Type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Filter Time (On to Off)\u003c\/td\u003e\n\u003ctd\u003eProgrammable (0.25 ms nominal to 8.0 ms maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Protection\u003c\/td\u003e\n\u003ctd\u003eFactory Conformal Coated PCB Assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.09 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e46 mm x 94 mm x 53 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTerminal Connection Block Node\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction \/ Signal Path Allocation\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal 0 to Terminal 15\u003c\/td\u003e\n\u003ctd\u003eExtended Temperature Sinking Input Channels 0 through 15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e+V (External Supply Node)\u003c\/td\u003e\n\u003ctd\u003e24V DC Sourcing Sensor Operational Power Distribution Path\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCOM (External Supply Return)\u003c\/td\u003e\n\u003ctd\u003eCommon Direct Current System Ground Reference Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003ch3\u003eDIN Rail Installation\u003c\/h3\u003e\n\u003cp\u003eEngage the upper retention hooks of the rear module housing onto the top track flange of standard 35 mm DIN rail lines. Push down and pivot the bottom portion of the enclosure inward until the embedded steel latch assembly locks around the lower tracking rail lip.\u003c\/p\u003e\n\u003ch3\u003eTerminal Base Seating\u003c\/h3\u003e\n\u003cp\u003eAlign the integrated physical guide tracks located on the bottom face of the operational module with the receiving key slots on the pre-installed conformal coated terminal base unit. Slide the hardware firmly into the interface socket matrix until the dual side latches click outwards to lock it in place.\u003c\/p\u003e\n\u003ch3\u003eSinking Configuration Wiring\u003c\/h3\u003e\n\u003cp\u003eWire external sourcing components directly to input points 0 through 15. Run the primary positive 24V DC distribution leg through the matching power tier of the terminal base block to keep standard potential profiles common across all connected sensor nodes.\u003c\/p\u003e\n\u003ch3\u003eThermal Integrity Management\u003c\/h3\u003e\n\u003cp\u003eEnsure ambient air circulation pathways are completely free of structural debris within the enclosure. Maintain the factory minimum 50 mm clearance boundaries above and below the terminal assembly rail to enable convective cooling under high ambient operating profiles.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes this module different from the standard 1794-IB16 model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit features an extended operating temperature threshold (-20 to 70 Celsius) and integrated conformal coating on the internal circuit structures for hazardous environment deployment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this hardware module require a specific terminal base assembly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it should be paired with extended temperature or conformal coated terminal base units like the 1794-TB3K or 1794-TB3SK to maintain system environmental compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the sinking circuit designation require from physical field components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sinking input path requires external devices to function as current sourcing components, supplying 24V DC into the input terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this component be pulled from the rail during system runtime?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it supports removal and insertion under power, enabling live replacement without interrupting power or communication data blocks on the remainder of the rail.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the input channels protected against high-frequency electrical contact bounce?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the input filter time constant can be adjusted via the master system programming software to filter out noise from noisy mechanical switch elements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat parameters determine a true off-state logic condition?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe channel registers an off-state when the voltage drops below 5.0V DC or the incoming input current drops under 1.5 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs separate external power required to drive the field sensory loops?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, a nominal 24V DC external operational loop must be connected directly to the terminal base block to drive the field-side input tracking mechanisms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do the front-facing light-emitting diode indicators communicate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe individual yellow lights illuminate when the corresponding input channel senses an active on-state voltage parameter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this specific assembly process input data from alternating current circuits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, this unit is engineered exclusively to track low-voltage direct current values within a 10V DC to 31.2V DC window.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does this module map its data bits back to a ControlLogix rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe hardware passes binary status values across the local FlexBus backplane to a communication adapter, which then transmits the data registers across the factory network.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695173726571,"sku":"1794-IB16XT","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1794-ib16xt-flex-i-o-xt-24vdc-digital-input-module-gi3sego2sib_4c438712-275d-4378-9367-8330f7f420cb.jpg?v=1766114144","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1794-ib16xt-flex-i-o-extended-temperature-digital-sinking-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}