{"product_id":"1794-tbnf-allen-bradley-fused-terminal-base-flex-i-o","title":"1794-TBNF Allen-Bradley Fused Terminal Base FLEX I\/O","description":"\u003cp\u003eConfigured for physical wiring termination and overcurrent fuse protection of 16 digital or analog I\/O channels, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1794-TBNF\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1794-TBNF\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFused Terminal Base) provides direct physical\/electrical execution within distributed FLEX I\/O control systems. The hardware acts as the primary mounting infrastructure, routing field electrical currents directly to the active module interface while establishing local circuit protection boundaries.\u003c\/p\u003e\n\u003ch3\u003eFunctional Coding Profile\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1794: Catalog series designation for the modular distributed FLEX I\/O platform.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTB: Terminal Base structural hardware platform.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eN: Narrow\/compact chassis connection geometry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eF: Integrated individual fuse holders for channel protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1794-TBNF\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModule Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFused Terminal Base\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTermination Points\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 Channels (Fused)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWire Gauge Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e22 to 12 AWG\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eContinuous Current Rating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 A max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Voltage Rating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250 VAC \/ VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to +55 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eStorage Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 to +85 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePassive pass-through bus structure\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10.2 cm x 8.9 cm x 6.3 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.2 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBackplane Integration \u0026amp; Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe device features an integrated side-mounted pass-through plug assembly that establishes electrical connections between the host adapter and the distributed network infrastructure. Field measurements are converted locally and broadcast across Profinet \/ EtherNet\/IP deterministic networks without drawing upon additional backplane bus communication velocity licenses. The passive backplane plane architecture ensures seamless I\/O density scaling while maintaining full firmware flash compatibility for all mounted operational processing modules.\u003c\/p\u003e\n\u003ch3\u003eLogistics Packaging Contents\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 Allen-Bradley 1794-TBNF Fused Terminal Base\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Terminal Marker Identification Strip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Base Interlock Protection Insert\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMechanical Rail Alignment\u003c\/p\u003e\n\u003cp\u003eSnap the base assembly horizontally onto a standard 35 mm DIN rail. Slide the unit securely to the left to fully mate the side-locking bus connectors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTerminal Screw Tensioning\u003c\/p\u003e\n\u003cp\u003eStrip conductor wires (22 to 12 AWG) to a standard depth of 10 mm. Secure each conductor within the terminal screw clamps, tightening to the specified torque rating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFuse Socket Allocation\u003c\/p\u003e\n\u003cp\u003eInsert appropriate fast-acting or time-delay industrial fuses into the designated front-facing sockets to match specific field circuit overload parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this passive base assembly require internal logic programming or a firmware flash update?\u003c\/p\u003e\n\u003cp\u003eNo, this component functions as a passive electrical termination unit and does not contain any microprocessor firmware or software logic registers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan active operational modules be safely hot-swapped while this base is powered?\u003c\/p\u003e\n\u003cp\u003eYes, the terminal base design permits the insertion and removal of compatible I\/O modules while the underlying system backplane remains active.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the absolute continuous current rating for each individual fuse circuit terminal path?\u003c\/p\u003e\n\u003cp\u003eThe terminal base is structurally rated to handle a maximum continuous current distribution ceiling of 10 A across its passive bus line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this device consume any data throughput allocations or backplane bus communication velocity licenses?\u003c\/p\u003e\n\u003cp\u003eNo, because it does not contain an active processing chipset, it operates independently of software communication velocity licenses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if a different functional module is inserted into this terminal base slot accidentally?\u003c\/p\u003e\n\u003cp\u003eA physical keyswitch on the base must be turned to match the specific structural coding of the target module to prevent incorrect insertion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the continuous electrical isolation capability between the terminal arrays and backplane connections?\u003c\/p\u003e\n\u003cp\u003eThe internal routing tracks are designed to maintain galvanic and physical isolation parameters up to a maximum rating of 250 VAC \/ VDC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the base accommodate different sizes of stranded wire conductors simultaneously within the same clamp?\u003c\/p\u003e\n\u003cp\u003eThe internal screw clamps are designed to secure single solid or stranded conductors spanning from 22 AWG down to 12 AWG per node.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is electrical ground continuity established for the field instrument shields?\u003c\/p\u003e\n\u003cp\u003eInstrument shield drain wires must be routed to an independent internal copper ground busbar within the primary system cabinet enclosure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066459672749,"sku":"1794-TBNF","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1794-TBNF_13.jpg?v=1784024331","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1794-tbnf-allen-bradley-fused-terminal-base-flex-i-o","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}