{"product_id":"allen-bradley-1794-tb3s-flex-i-o-terminal-base-unit","title":"Allen Bradley 1794-TB3S Flex I\/O Terminal Base Unit","description":"\u003ch2\u003eAllen Bradley 1794-TB3S Flex I\/O Terminal Base Unit\u003c\/h2\u003e\n\u003cp\u003eConfigured for field wiring termination and I\/O point connection in Flex I\/O 1794 control systems, the \u003cstrong\u003eAllen Bradley 1794-TB3S\u003c\/strong\u003e (\u003cstrong\u003e1794-TB3S\u003c\/strong\u003e Flex I\/O Terminal Base Unit) provides direct physical\/electrical execution between field conductors and installed I\/O modules.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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-TB3S\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\u003e0.50 lbs\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\u003eNot specified; terminal base unit passive connection component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O Terminal Base Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamp Type\u003c\/td\u003e\n\u003ctd\u003eSpring Clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\/Outputs\u003c\/td\u003e\n\u003ctd\u003e16 I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e22 to 12 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz to 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 85 deg C\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 from 10 Hz to 150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet-IP Deterministic Networks and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3S is designed as a terminal base interface within the Allen Bradley Flex I\/O 1794 platform. The unit provides mechanical retention and electrical termination for Flex I\/O modules, supporting up to 16 connected I\/O points through spring clamp field wiring connections. The terminal base maintains the I\/O module mounting arrangement and enables distributed I\/O installation across industrial control architectures.\u003c\/p\u003e\n\u003cp\u003eThe spring clamp termination method supports consistent conductor fixation without additional tightening hardware. Wiring installation must follow the specified conductor size range and applicable control cabinet wiring practices to maintain signal integrity and mechanical stability.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1794-TB3S contain active electronic processing functions?\u003cbr\u003eA: No. The 1794-TB3S is a passive terminal base unit providing field wiring termination and module connection functions. Processing and communication functions are performed by the installed Flex I\/O module and adapter components.\u003c\/p\u003e\n\u003cp\u003eQ: What type of field wiring connection is supported by the 1794-TB3S?\u003cbr\u003eA: The unit uses spring clamp terminals and supports wire sizes from 22 to 12 AWG for field conductor connection.\u003c\/p\u003e\n\u003cp\u003eQ: Can the terminal base be replaced while the system is powered?\u003cbr\u003eA: Replacement procedures depend on the installed Flex I\/O module configuration and system operating rules. Power isolation and manufacturer-defined maintenance procedures should be followed before physical replacement.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the terminal base on the Flex I\/O mounting assembly according to the mechanical alignment requirements of the 1794 series platform.\u003c\/li\u003e\n\u003cli\u003eVerify conductor size compatibility before inserting field wiring into the spring clamp terminals.\u003c\/li\u003e\n\u003cli\u003eSeparate field signal wiring from high-voltage power conductors to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eConnect cable shields according to the control system grounding design and avoid creating unintended ground loops.\u003c\/li\u003e\n\u003cli\u003eConfirm terminal seating and module engagement before applying system power.\u003c\/li\u003e\n\u003cli\u003eMaintain environmental conditions within the specified operating temperature and humidity limits during operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43784050901082,"sku":"1794-TB3S","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-TB3S2.jpg?v=1785837176","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-tb3s-flex-i-o-terminal-base-unit","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}