{"product_id":"1794-tb2-allen-bradley-1794-tb2-terminal-base-unit-flex-i-o","title":"1794-TB2 Allen-Bradley 1794-TB2 Terminal Base Unit Flex I\/O","description":"\u003cp\u003eConfigured for terminal signal routing and physical loop termination in industrial control networks, the \u003cstrong\u003eAllen-Bradley 1794-TB2\u003c\/strong\u003e (\u003cstrong\u003e1794-TB2\u003c\/strong\u003e FLEX I\/O Terminal Base Unit) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eNomenclature and Suffix Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform Identifier:\u003c\/strong\u003e 1794\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Series:\u003c\/strong\u003e FLEX I\/O Terminal Base Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariant Code:\u003c\/strong\u003e TB2 (2-wire cage clamp connection layout)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specification Matrix\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\u003e1794-TB2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e10.2 cm x 7.6 cm x 10.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot applicable (passive terminal base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Type\u003c\/td\u003e\n\u003ctd\u003eCage clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size Range\u003c\/td\u003e\n\u003ctd\u003e24 - 16 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e125 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eAllen-Bradley Industrial Control and Drive Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity:\u003c\/strong\u003e Maintains low-latency passive signal pass-through for high-speed deterministic network backplanes across modular rack assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfinet and EtherNet\/IP Deterministic Networks:\u003c\/strong\u003e Accommodates high-speed fieldbus node communication protocols by ensuring stable physical terminal interfaces without signal degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling:\u003c\/strong\u003e Supports modular point distribution by housing multi-channel wire connection points within a compact physical footprint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility:\u003c\/strong\u003e Acts as a transparent physical intermediary hardware base that permits system control and module firmware updates without rewiring requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDelivery Package Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1794-TB2 FLEX I\/O Terminal Base Unit\u003c\/li\u003e\n\u003cli\u003e1 x Integrated Terminal Label Sheet\u003c\/li\u003e\n\u003cli\u003e2 x Mechanical Mounting Retention Clips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Mounting and Hardware Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Fastening:\u003c\/strong\u003e Mount the terminal base securely onto a standard 35 mm DIN rail inside the enclosure before snapping on the corresponding I\/O module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Insertion Rules:\u003c\/strong\u003e Strip wire insulation to the required length and insert conductors directly into the cage clamp terminals, verifying secure mechanical grip for 24 to 16 AWG sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation Rules:\u003c\/strong\u003e Route low-level analog or digital signal wires away from high-voltage power conduits to minimize electromagnetic noise coupling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Operation Queries\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum voltage rating supported by this terminal base?\u003c\/p\u003e\n\u003cp\u003eThe unit is rated for operational circuits up to 125 V AC\/DC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the terminal base actively consume power from the rack?\u003c\/p\u003e\n\u003cp\u003eNo, the 1794-TB2 is a passive hardware component and does not draw internal operating power from the backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat wire gauge sizes are compatible with the cage clamp terminals?\u003c\/p\u003e\n\u003cp\u003eThe terminal block accepts solid or stranded copper wires ranging from 24 AWG to 16 AWG.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow should field wiring be secured into the terminal blocks?\u003c\/p\u003e\n\u003cp\u003eField wires are secured using built-in cage clamp technology designed for rapid and reliable tool-assisted insertion without screw torque requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this terminal base support hot-swapping of I\/O modules?\u003c\/p\u003e\n\u003cp\u003eYes, the mechanical base design allows compatible FLEX I\/O modules to be removed or inserted under power when system architecture permits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat are the physical dimensions of the unit for cabinet layout planning?\u003c\/p\u003e\n\u003cp\u003eThe estimated shipping and physical size dimensions are 10.2 cm x 7.6 cm x 10.2 cm with a mass of 0.2 kg.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat country is designated as the manufacturing origin?\u003c\/p\u003e\n\u003cp\u003eThe unit originates from the United States, with standard dispatch processed through Xiamen, China.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the primary function of the 2-wire configuration?\u003c\/p\u003e\n\u003cp\u003eThe 2-wire arrangement provides dedicated connection channels for standard field sensor and actuator loops mapped directly to compatible I\/O modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066459345069,"sku":"1794-TB2","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1794-TB2_24.jpg?v=1784025602","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1794-tb2-allen-bradley-1794-tb2-terminal-base-unit-flex-i-o","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}