{"product_id":"do840-3bse020838r1-abb-s800-i-o-redundant-digital-output-module","title":"DO840 3BSE020838R1 | ABB S800 I\/O Redundant Digital Output Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB DO840 (3BSE020838R1)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacts as a high-integrity 16-channel Digital Output (DO) module within the S800 I\/O system. This module manages discrete signals for solenoids, relays, and motor starters with advanced precision. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, featuring built-in support for both single and redundant configurations. It provides the essential interface for AC 800M controllers to execute critical commands while maintaining continuous system availability through sophisticated internal monitoring.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003eThe DO840 organizes 16 independent channels into two isolated groups to ensure signal purity and electrical safety:\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\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\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDO840 \/ 3BSE020838R1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDigital Output (DO)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChannel Grouping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIsolated in two groups of 8 channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 A per channel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRedundancy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSupports Single or Redundant pairing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAdvanced on-board loop\/module diagnostics\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions (WxHxD)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e45 mm x 119 mm x 102 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.2 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRoHS Directive 2011\/65\/EU\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNative Hardware Redundancy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe DO840 supports full hardware redundancy when paired on a compatible Module Termination Unit (MTU). If the primary module detects an internal failure, the standby module takes over the output state instantly. This eliminates process interruptions in mission-critical applications like Emergency Shutdown (ESD) or continuous chemical dosing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Group Electrical Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe architecture isolates the 16 channels into two distinct groups of eight. This separation prevents a localized electrical fault in one field segment from propagating across the entire module, significantly improving fault tolerance in complex wiring environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced On-Board Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated sensors monitor the health of each output circuit in real-time. The module detects open circuits, short circuits, and over-temperature conditions, reporting these specific errors to the DCS. This allows maintenance teams to pinpoint field issues without manual point-to-point testing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact High-Density Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 45 mm slim profile maximizes the utilization of DIN-rail space. This design allows for high-density I\/O clusters, reducing the required number of control cabinets and lowering the overall installation cost of the distributed control system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Termination Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module interfaces with a broad range of MTUs, including the TU810, TU812, TU842, and TU852. This flexibility allows engineers to implement various termination styles—from simple screw terminals to fully redundant, fused configurations—to match specific project standards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is required to implement redundancy with the DO840?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo utilize redundancy, you must install two DO840 modules onto a redundant Module Termination Unit, such as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTU842\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTU843\u003c\/strong\u003e. The S800 system then manages the module pairing and switchover logic automatically.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module protect against short circuits in the field?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The DO840 includes intelligent short-circuit protection. It limits the output current and triggers a diagnostic alarm if it detects a shorted load, protecting the internal transistors and the 24V DC power supply.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a refurbished or surplus unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsolutely not. We guarantee this DO840 (3BSE020838R1) is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal hardware. It arrives in the original ABB factory-sealed packaging with all security labels, serial numbers, and technical documentation intact.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a DO840 without shutting down the controller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. When mounted on a compatible MTU, the DO840 supports \"Hot-Swap\" functionality (Removal and Insertion Under Power). You can replace a faulty module while the rest of the I\/O cluster remains fully operational.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53096066613432,"sku":"DO840 3BSE020838R1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/DO8403BSE020838R1.jpg?v=1774431188","url":"https:\/\/www.globalpetroparts.com\/products\/do840-3bse020838r1-abb-s800-i-o-redundant-digital-output-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}