{"product_id":"tu841-abb-3bse020848r1-redundant-module-termination-unit","title":"TU841 ABB 3BSE020848R1 Redundant Module Termination Unit","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB TU841 3BSE020848R1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a specialized Module Termination Unit (MTU) designed for redundant configurations within the System 800xA and AC 800M controller platforms. This unit provides the physical and electrical interface for redundant I\/O modules, ensuring that process data remains accessible even during individual module failures. We supply this component as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal equipment to ensure the highest level of system integrity for your critical control loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe TU841 provides the mechanical housing and electrical pathways necessary for high-availability redundant operations.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eABB\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTU841\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct ID\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3BSE020848R1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePlatform\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSystem 800xA \/ S800 I\/O\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRedundancy Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDual I\/O Module Slots\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDIN Rail Mounting (Vertical\/Horizontal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTermination for Process Wiring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.55 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe TU841 3BSE020848R1 eliminates single points of failure in the I\/O subsystem by facilitating precise synchronization between active and secondary modules.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Redundancy Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis MTU supports four distinct synchronization states. It manages the transition from the \"Secondary CPU Present\" state (loading OS\/Programs) to the \"Synchronized\" state, where cyclic data mirroring between modules occurs in real-time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFault Detection and Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit identifies version disparities between active stations and assigned resources. It displays these errors independently of the resource's run state, allowing engineers to troubleshoot software mismatches even while the station remains stopped.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSynchronization Recovery Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIf a module enters a \"Sync Failure\" state after repeated start\/stop attempts, the TU841 interface allows for rapid diagnostics of unsuccessful user program loads without disturbing the active process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHot-Swap Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe design permits the replacement of a faulty module without interrupting the field wiring or the operation of the primary redundant partner, maintaining 100% process uptime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Wiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy consolidating redundant connections into a single MTU footprint, this unit reduces cabinet complexity and decreases the risk of cross-wiring during commissioning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the active and secondary modules have different program versions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe TU841 architecture detects version disparities immediately. The system displays this status regardless of the resource state (Running or Stopped), alerting the user that synchronization cannot conclude until versions match.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a module while the process is running?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The TU841 supports hot-swapping for redundant pairs. When the primary module is in the \"Synchronized\" state, you can safely remove or replace the secondary module without affecting the live process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the unit signal that synchronization is complete?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOnce the secondary CPU module loads the operating system and user program, the TU841 facilitates \"Cyclic Data Mirroring.\" At this stage, the system reaches a normal redundant state, ready for an immediate switchover if the primary fails.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should I check if the CPU module cannot achieve a \"Sync\" state?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA failure to reach the \"Sync\" state typically points to an unsuccessful user program load. Verify the software version and communication integrity between the resource and the secondary module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":42974855135347,"sku":"TU841 3BSE020848R1","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/472._210fc092-79e1-4213-8ecc-3ed578e0be4f.jpg?v=1775023380","url":"https:\/\/www.dcssupplier.com\/products\/tu841-abb-3bse020848r1-redundant-module-termination-unit","provider":"DcsSupplier Limited","version":"1.0","type":"link"}