{"product_id":"abb-s800-i-o-3bse020838r1-do840-digital-output-module","title":"ABB S800 I\/O 3BSE020838R1 DO840 Digital Output Module","description":"\u003ch3\u003eS800 I\/O Digital Output Module Overview\u003c\/h3\u003e\n\n\u003cp\u003e\nThe \u003cstrong\u003e3BSE020838R1 (DO840)\u003c\/strong\u003e is a high-reliability digital output module within ABB’s S800 I\/O system, designed for industrial automation and process control applications.\nIt provides 16 channel 24V DC transistor outputs with advanced diagnostics and flexible redundancy options.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe module is engineered for demanding control environments where stable switching performance, channel isolation, and system diagnostics are critical. \nIt is widely used in ABB 800xA and Compact Product Suite architectures to drive actuators, solenoids, and interlocking systems in continuous industrial operations.\n\u003c\/p\u003e\n\n\u003ch3\u003eSystem Architecture \u0026amp; Function Design\u003c\/h3\u003e\n\n\u003cp\u003e\nThe DO840 is designed with a focus on channel isolation, modular redundancy, and diagnostic transparency:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Configuration:\u003c\/strong\u003e 16 digital outputs divided into 2 isolated groups of 8 channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy Support:\u003c\/strong\u003e Supports both single and redundant system configurations for high availability applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Rating:\u003c\/strong\u003e 0.5A per channel for reliable switching of field devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-board Diagnostics:\u003c\/strong\u003e Advanced diagnostics enable real-time fault detection and channel-level monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Integration:\u003c\/strong\u003e Designed for S800 I\/O racks and compatible with ABB 800xA and Compact Product Suite systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Mechanical Data\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3BSE020838R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eABB Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDO840\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 (2 isolated groups)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V DC Digital Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 A per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGroup Isolated (2 × 8 channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e102 × 119 × 45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoHS Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompliant (EU Directive 2011\/65\/EU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication \u0026amp; Operational Notes\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the DO840 operate in redundant configurations?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\nYes. The module supports redundant setup when used with compatible S800 I\/O system architecture, ensuring high system availability in critical process control applications.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat type of loads can the outputs drive?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\nEach channel supports 24V DC loads up to 0.5A, typically used for solenoids, relays, indicators, and small actuator devices in automation systems.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow is diagnostic information provided?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\nThe module includes advanced on-board diagnostics that report channel faults, communication status, and power supply conditions directly to the control system.\n\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Engineering Guidelines\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eMTU Compatibility:\u003c\/strong\u003e\u003cbr\u003e\nThe DO840 must be installed with compatible Module Termination Units (TU810, TU812, TU814, TU830, TU833, TU842, TU843, TU852). \nProper MTU selection ensures correct wiring density and system reliability.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWiring Isolation:\u003c\/strong\u003e\u003cbr\u003e\nThe outputs are divided into two isolated groups. Maintain proper separation to avoid cross-coupling and ensure signal integrity in high-density cabinets.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cbr\u003e\nAlthough the module has low power dissipation, ensure proper cabinet ventilation when multiple I\/O modules are installed in close proximity.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e\u003cbr\u003e\nWhen used in 800xA systems, ensure correct I\/O configuration in controller software to enable full diagnostic and redundancy features.\n\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52701959782763,"sku":"3BSE020838R1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/3bse020838r1-vprkccjumrg_a3901b93-cbb8-4578-9972-b342a76e0e19.jpg?v=1766478195","url":"https:\/\/www.plcprotech.com\/products\/abb-s800-i-o-3bse020838r1-do840-digital-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}