{"product_id":"abb-3bse021439r1-tb846-ac-800m-terminal-base","title":"ABB 3BSE021439R1 TB846 AC 800M Terminal Base","description":"\u003ch2\u003eABB TB846 3BSE021439R1 AC 800M CEX Bus Terminal Base\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB TB846 3BSE021439R1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eTB846\u003c\/strong\u003e Module Terminal Base, operates as a dedicated hardware component for mechanical mounting and electrical interface distribution within ABB AC 800M and System 800xA controller platforms. It hosts communication interface modules such as the CI853, CI854, CI860, and CI870, routing 24 VDC operational power and CEX bus signals directly to mounted hardware while enabling dual-redundant interface topologies across the backplane.\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\u003eTB846\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e3BSE021439R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e60 mm x 185 mm x 127 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e+5 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive distribution (24 VDC backplane bus feed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Support\u003c\/td\u003e\n\u003ctd\u003eCEX Bus (Communication Expansion Bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Compatibility\u003c\/td\u003e\n\u003ctd\u003eCI853, CI854, CI860, CI870, CI871, CI873, CI874\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (IEC 60529)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Rating\u003c\/td\u003e\n\u003ctd\u003eISA G3 compliant (ISA 71.04)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Redundant Hardware Execution\u003c\/h3\u003e\n\u003cp\u003eThe TB846 baseplate provides low-latency CEX bus interconnection to maintain backplane bus communication velocity between communication modules and the central AC 800M controller. Designed to support hot-swappable module operations, the internal contact structures allow live insertion and removal of primary or redundant communication cards without interrupting backplane power distribution or corrupting active data packets on adjacent slots. The ISA G3 compliant housing protects signal paths against atmospheric corrosion in harsh electrical panel environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Which ABB communication interface modules are compatible with the TB846 baseplate?\u003c\/p\u003e\n\u003cp\u003eA: The TB846 accommodates AC 800M CEX bus communication modules, including the CI853 (RS-232), CI854 (PROFIBUS-DP), CI860 (FOUNDATION Fieldbus HSE), CI870 (PROFINET), CI871, CI873, and CI874.\u003c\/p\u003e\n\u003cp\u003eQ: Does the TB846 terminal base require independent power wiring for each slot?\u003c\/p\u003e\n\u003cp\u003eA: No. The TB846 routes 24 VDC power directly from the AC 800M processor or adjacent baseplates via internal CEX bus pass-through lines, distributing power automatically to installed communication modules.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the TB846 baseplate onto standard 35 mm DIN rails, ensuring the metal grounding clips on the rear housing make firm, unpainted contact with the metal rail surface. Interlock the unit laterally with adjacent CEX bus baseplates until the internal connector pins fully lock together, forming an unbroken bus structure.\u003c\/p\u003e\n\u003cp\u003eVerify that all module retention latches snap securely when seating interface modules into the TB846 slot. Route incoming communication network cabling away from AC motor conductors, and ensure shielded field wires connect to the system ground bus with short, low-impedance grounding connections.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53012526301496,"sku":"TB846 3BSE021439R1","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/127.jpg?v=1790145018","url":"https:\/\/www.automodulexpert.com\/products\/abb-3bse021439r1-tb846-ac-800m-terminal-base","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}