{"product_id":"tb840-3bse021456r1-abb-communication-modules","title":"TB840 3BSE021456R1 ABB Communication Modules","description":"\u003ch2\u003eABB TB840 Modulebus Cluster Modem\u003c\/h2\u003e\n\u003cp\u003eConfigured for optical cluster modem operation in the ABB Modulebus network, the \u003cstrong\u003eABB 3BSE021456R1\u003c\/strong\u003e (\u003cstrong\u003eTB840\u003c\/strong\u003e Modulebus Cluster Modem) provides optical communication for 1+1 redundant operation. The hardware supports the specified TB840 functionality and uses a pin-compatible successor, TB840A, where hardware changes do not alter the stated functionality.\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\u003eTB840\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Product ID\u003c\/td\u003e\n\u003ctd\u003e3BSE021456R1\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eModulebus Cluster Modem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eOptical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003e1+1 redundant operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003ePin-compatible with TB840A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Status\u003c\/td\u003e\n\u003ctd\u003eReplaced by TB840A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.272 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e16 cm D x 15.7 cm H x 8 cm W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eOptical Modulebus Communication and Redundancy\u003c\/h3\u003e\n\u003cp\u003eTB840 operates as an optical cluster modem within the Modulebus architecture. It supports 1+1 redundant operation, allowing the hardware arrangement to maintain the specified cluster communication function across a redundant configuration.\u003c\/p\u003e\n\u003cp\u003eThe supplied ABB data identifies TB840A as the pin-compatible replacement. ABB states that hardware changes were implemented without changing the functionality specified for TB840.\u003c\/p\u003e\n\u003cp\u003eTherefore, installation and replacement work should verify the exact hardware revision and system compatibility before commissioning. The optical communication path should also remain physically protected from excessive bending, contamination, and mechanical stress.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary function of ABB TB840 3BSE021456R1?\u003cbr\u003eA: TB840 is an optical Modulebus Cluster Modem designed for 1+1 redundant operation.\u003c\/p\u003e\n\u003cp\u003eQ: Can TB840 be replaced by TB840A?\u003cbr\u003eA: ABB identifies TB840A as the pin-compatible replacement and states that hardware changes did not change the specified functionality.\u003c\/p\u003e\n\u003cp\u003eQ: What operating temperature and power consumption does TB840 support?\u003cbr\u003eA: The supplied product data does not specify operating temperature or power consumption. These values should therefore be taken from the applicable ABB hardware documentation for the installation revision.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the complete product identification as \u003cstrong\u003e3BSE021456R1\u003c\/strong\u003e before installation.\u003c\/li\u003e\n\u003cli\u003eConfirm the Modulebus architecture and required 1+1 redundant configuration before connecting the modem.\u003c\/li\u003e\n\u003cli\u003eInspect optical connectors and interfaces for contamination or mechanical damage before connection.\u003c\/li\u003e\n\u003cli\u003eRoute optical communication cables separately from high-energy power wiring where practical.\u003c\/li\u003e\n\u003cli\u003eAvoid excessive cable bending, tensile loading, or repeated mechanical movement at optical connections.\u003c\/li\u003e\n\u003cli\u003eConfirm connector engagement and mechanical retention before energizing the system.\u003c\/li\u003e\n\u003cli\u003eCheck module seating and physical mounting before applying system power.\u003c\/li\u003e\n\u003cli\u003eWhen replacing TB840 with TB840A, verify pin compatibility and the applicable ABB hardware revision.\u003c\/li\u003e\n\u003cli\u003eDo not apply undocumented voltage or signal connections to the communication interface.\u003c\/li\u003e\n\u003cli\u003eComplete communication and redundancy checks after installation before returning the Modulebus network to service.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44650523492440,"sku":"TB840 3BSE021456R1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/TB840-3BSE021456R1-3_1200x1200_ce05f038-b7bf-4176-97a2-f2ca15b99b3c.jpg?v=1787563025","url":"https:\/\/www.industriaxplc.com\/products\/tb840-3bse021456r1-abb-communication-modules","provider":"IndustriaX Limited","version":"1.0","type":"link"}