{"product_id":"allen-bradley-1794-tb3t-flex-i-o-terminal-base-unit","title":"Allen-Bradley 1794-TB3T Flex I\/O Terminal Base Unit","description":"\u003cp\u003eConfigured for high-density signal distribution in Flex I\/O platforms, the \u003cstrong\u003eAllen-Bradley 1794-TB3T\u003c\/strong\u003e (\u003cstrong\u003e1794-TB3T\u003c\/strong\u003e Terminal Base Unit) provides direct physical mounting and electrical termination for up to 16 I\/O points within the Flex I\/O architecture.\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\u003e1794-TB3T\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\u003eSubject to manufacturing batch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.26 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Flex I\/O base profile\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 pass-through (10 A max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Capacity\u003c\/td\u003e\n\u003ctd\u003e16 I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround Terminals\u003c\/td\u003e\n\u003ctd\u003e8 chassis ground terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003eUp to 125 VAC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eI\/O Density Scaling and Backplane Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3T facilitates I\/O density scaling by providing a modular foundation for 1794 series modules. The base unit serves as a passive pass-through interface, connecting field-side wiring directly to the mounted I\/O module and the internal Flex I\/O backplane bus. Its physical construction supports consistent communication velocity across the I\/O rack, provided that all modules are seated with the locking mechanism fully engaged to maintain signal integrity across the bus interface.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1794-TB3T provide electrical isolation for the I\/O signals?\u003c\/p\u003e\n\u003cp\u003eA: No. The 1794-TB3T is a passive terminal base. Electrical isolation characteristics are determined solely by the specific 1794 I\/O module installed on the base, not by the base unit itself.\u003c\/p\u003e\n\u003cp\u003eQ: Is this terminal base compatible with all 1794 series modules?\u003c\/p\u003e\n\u003cp\u003eA: The 1794-TB3T is compatible with most 1794 Flex I\/O modules; however, users must verify the specific pin-out and wiring requirements of the I\/O module to ensure compatibility with the terminal base’s wiring configuration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Mounting:\u003c\/strong\u003e Ensure the unit is installed on a 35 mm DIN rail. Secure the base to the rail using the integrated locking tab to maintain stability in environments subjected to the specified 5 g vibration resistance limit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Utilize the 8 chassis ground terminals to terminate cable shields. A solid, low-impedance connection to the cabinet's main ground bus is required to mitigate electromagnetic interference in signal lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Limitations:\u003c\/strong\u003e The terminal base supports up to 125 VAC\/DC. Ensure that wire gauges used for field termination comply with local electrical codes and the 10 A current rating limit of the terminal base unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Sealing:\u003c\/strong\u003e While the unit operates between 5% and 95% relative humidity (non-condensing), ensure the control cabinet is rated appropriately for the operating environment to prevent moisture accumulation on the exposed terminal screws.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53548959531192,"sku":"1794-TB3T","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1794-TB3T.jpg?v=1780622804","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1794-tb3t-flex-i-o-terminal-base-unit","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}