{"product_id":"allen-bradley-1794-tb32-terminal-base-unit","title":"Allen-Bradley 1794-TB32 Terminal Base Unit","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-TB32\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-TB32\u003c\/strong\u003e Terminal Base Unit, operates as a dedicated hardware component for high-density field signal termination and backplane power distribution within Flex I\/O 1794 control platforms.\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-TB32\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\u003e0.75 lbs (0.34 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Flex I\/O Terminal Base Footprint\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\u003e640 mA max (Flexbus output power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e19.2 to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Current Rating\u003c\/td\u003e\n\u003ctd\u003e10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\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\u003eField Connections\u003c\/td\u003e\n\u003ctd\u003e32 I\/O, 8 Common, 8 +V Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Rate\u003c\/td\u003e\n\u003ctd\u003e57.6 kbps to 230 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network Communication \u0026amp; I\/O Density\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB32 provides a high-density 32-channel signal interface supporting high I\/O density scaling across distributed EtherNet\/IP and ControlNet topologies. Integrated internal backplane routing ensures stable backplane bus communication velocity and continuous Flexbus current delivery up to 640 mA to mounted I\/O modules. Firmware flash compatibility across standard 1794 series network adapters allows deterministic parameter pass-through and communication rates up to 230 kbps, maintaining channel-to-channel signal integrity and fast update execution across all 32 cage-clamp termination points.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How are power and ground distributed across the field terminals on the 1794-TB32?\u003c\/p\u003e\n\u003cp\u003eA: The terminal base unit features 32 distinct I\/O termination points alongside 8 common terminals and 8 +V power distribution terminals, allowing direct cage-clamp termination for 32-point 24 VDC I\/O modules without requiring external terminal strips.\u003c\/p\u003e\n\u003cp\u003eQ: Can 1794 series modules be replaced on the 1794-TB32 while the backplane is energized?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 1794-TB32 supports Removal and Insertion Under Power (RIUP), allowing technicians to replace faulty 32-point I\/O modules without removing field wiring or interrupting backplane communication to adjacent base units.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum continuous isolation voltage rating for the 1794-TB32 base?\u003c\/p\u003e\n\u003cp\u003eA: The 1794-TB32 is rated for 50 V continuous isolation between field-side circuits and the internal Flexbus backplane logic system.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the 1794-TB32 securely onto a standard 35 mm DIN rail or panel surface using the integrated mounting latches.\u003c\/li\u003e\n\u003cli\u003eAlign and interconnect adjacent terminal base units using the side-locking keyways to guarantee solid physical engagement of the internal Flexbus connectors.\u003c\/li\u003e\n\u003cli\u003eStrip field conductors to recommended lengths and insert into the cage-clamp terminals, ensuring 24 VDC positive feeds connect to +V terminals and returns to common points.\u003c\/li\u003e\n\u003cli\u003eVerify that external 24 VDC field power supplies remain strictly within the 19.2 to 31.2 VDC operating window under all load conditions.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate enclosure airflow to keep ambient operating temperatures within the specified -20 to 70 deg C range.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52653103284504,"sku":"1794-TB32","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1794-TBN1_Cocoai_cf9d9719-3485-4791-9545-997aa9510407.jpg?v=1789092172","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1794-tb32-terminal-base-unit","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}