{"product_id":"allen-bradley-1794-tb3t-i-o-temperature-terminal-base-unit","title":"Allen-Bradley 1794-TB3T I\/O Temperature Terminal Base Unit","description":"\u003cp\u003eConfigured for high-density signal termination and thermocouple interfacing in Allen-Bradley Flex I\/O networks, the \u003cstrong\u003eAllen-Bradley 1794-TB3T\u003c\/strong\u003e (\u003cstrong\u003e1794-TB3T\u003c\/strong\u003e Flex I\/O Terminal Base Unit) provides direct physical\/electrical execution. This 16-point terminal interface incorporates internal temperature sensing and eight dedicated chassis ground terminals to process 125 VAC\/DC signals across distributed control architectures.\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.56 lbs (0.26 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Flex I\/O Base Dimensions\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 Component \/ Rated up to 125 VAC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Rating\u003c\/td\u003e\n\u003ctd\u003e10 A total base current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 16 input\/output points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Ground Terminals\u003c\/td\u003e\n\u003ctd\u003e8 dedicated chassis ground terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency Range\u003c\/td\u003e\n\u003ctd\u003e50 Hz to 60 Hz\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\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e5 g at 10 Hz to 150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Module Types\u003c\/td\u003e\n\u003ctd\u003eThermocouple and high-density 1794 Flex I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP Deterministic Networks \u0026amp; Backplane Bus Velocity\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3T terminal base unit establishes the physical connection layer for the Flexbus backplane, enabling high-velocity data transfer between inserted functional modules and network adapters on EtherNet\/IP control networks. The board includes continuous signal route trace shielding and low-impedance bus connections, maintaining deterministic transmission times across high-density I\/O clusters. Designed for extended environmental conditions (-20 to +70 deg C), the unit preserves backplane signal integrity even when subjected to 5 g mechanical vibration across the 10 Hz to 150 Hz frequency band.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum voltage and current capacity supported by the 1794-TB3T terminal base?\u003c\/p\u003e\n\u003cp\u003eA: The terminal base is rated for operation up to 125 VAC\/DC with a maximum continuous current capacity of 10 A across the terminal array.\u003c\/p\u003e\n\u003cp\u003eQ: How many dedicated ground terminals are integrated into the 1794-TB3T chassis?\u003c\/p\u003e\n\u003cp\u003eA: The base unit provides eight dedicated chassis ground terminals to facilitate single-point drain wire grounding for shielded instrument cables.\u003c\/p\u003e\n\u003cp\u003eQ: What operating temperature range can the 1794-TB3T withstand in field enclosures?\u003c\/p\u003e\n\u003cp\u003eA: The hardware operates within an extended ambient temperature range of -20 to +70 deg C (-4 to +158 deg F).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSnap the 1794-TB3T base unit firmly onto a grounded TS35 DIN rail, ensuring the locking latch fully engages the rail.\u003c\/li\u003e\n\u003cli\u003eInterlock adjacent Flex I\/O bases by sliding them laterally to complete the internal Flexbus backplane connection.\u003c\/li\u003e\n\u003cli\u003eWire field instrumentation to the cage-clamp or screw terminals, connecting cable drain shields directly to the eight chassis ground points.\u003c\/li\u003e\n\u003cli\u003eRotate the module mechanical keyswitch on the terminal base to match the keying position required by the specific 1794 functional module.\u003c\/li\u003e\n\u003cli\u003eVerify field power supply voltages do not exceed the 125 VAC\/DC voltage limit or 10 A total terminal bus current rating.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52786934808856,"sku":"1794-TB3T","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1794-TB2_Cocoai.jpg?v=1790650395","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1794-tb3t-i-o-temperature-terminal-base-unit","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}