{"product_id":"do821-3bse013250r1-abb-s800-i-o-digital-output-relay-module","title":"DO821 3BSE013250R1 ABB S800 I\/O Digital Output Relay Module","description":"\u003ch2\u003eABB DO821 Digital Output Relay Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 3BSE013250R1 DO821\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDO821\u003c\/strong\u003e Digital Output Relay Module, provides 230 V AC\/DC relay switching execution within the ABB S800 I\/O system. The module contains 8 individually isolated NC relay output channels with field voltage supervision and ModuleBus diagnostics.\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\u003eDO821\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\u003eArticle Number\u003c\/td\u003e\n\u003ctd\u003e3BSE013250R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital Output Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eABB S800 I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003eRelay (NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Specification\u003c\/td\u003e\n\u003ctd\u003e230 V AC\/DC, 5-250 V AC\/DC, 3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Support\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSOE Support\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Integrity\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntrinsic Safety\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eIndividually isolated channel-to-channel and to circuit common\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output Voltage\u003c\/td\u003e\n\u003ctd\u003e250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Continuous Output Current\u003c\/td\u003e\n\u003ctd\u003e3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003eSupported through MTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Field Cable Length\u003c\/td\u003e\n\u003ctd\u003e600 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Insulation Voltage\u003c\/td\u003e\n\u003ctd\u003e250 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Test Voltage\u003c\/td\u003e\n\u003ctd\u003e2000 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eTypical 2.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption +5 V ModuleBus\u003c\/td\u003e\n\u003ctd\u003e60 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption +24 V ModuleBus\u003c\/td\u003e\n\u003ctd\u003e140 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption +24 V External\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95 %, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20 according to IEC 60529\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45 mm W x 119 mm H x 102 mm D, 111 mm D including connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible MTU\u003c\/td\u003e\n\u003ctd\u003eTU811, TU813, TU831, TU836, TU837, TU851\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeying Code\u003c\/td\u003e\n\u003ctd\u003eCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eABB S800 ModuleBus Relay Output Diagnostics\u003c\/h3\u003e\n\u003cp\u003eThe DO821 uses optical isolation barriers, relay drivers, output status LEDs, relay contacts, and EMC protection components for each output channel. Additionally, the module monitors the relay supply voltage derived from the 24 V ModuleBus distribution.\u003c\/p\u003e\n\u003cp\u003eThe relay power converter supervision generates a module error signal when the supply voltage disappears. Furthermore, the Warning LED indicates the abnormal condition, and the diagnostic information remains available through the ModuleBus communication interface. The supervision function can be enabled or disabled through configuration parameters.\u003c\/p\u003e\n\u003cp\u003eThe S800 I\/O architecture supports high I\/O density scaling through standardized ModuleBus communication. Therefore, the DO821 integrates directly into ABB distributed control environments where deterministic I\/O update behavior and channel-level isolation are required.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the DO821 support redundant output operation?\u003cbr\u003eA: No. The DO821 is a non-redundant digital output module with 8 individually isolated NC relay channels.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module detect relay supply failures?\u003cbr\u003eA: The module monitors the 24 V ModuleBus-derived relay supply voltage and reports faults through ModuleBus diagnostics when the voltage disappears.\u003c\/p\u003e\n\u003cp\u003eQ: Can the DO821 outputs be connected to mixed AC and DC field loads?\u003cbr\u003eA: The module supports 5-250 V AC\/DC relay switching signals within the specified output voltage and current limits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the DO821 on approved ABB S800 I\/O mounting components with the specified compatible MTU. Verify the keying code before module insertion to prevent incorrect hardware installation.\u003c\/p\u003e\n\u003cp\u003eRoute field wiring separately from high-voltage power cables and maintain proper cable segregation according to industrial control cabinet practices. Connect protective earth and shielding according to the cabinet grounding design.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, check relay output wiring, channel status LEDs, ModuleBus communication status, and relay supply supervision parameters. Confirm that connected field devices remain within the rated voltage and current limits.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44619412996184,"sku":"DO821 3BSE013250R1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/DO821-3BSE013250R1_1200x1200_2160dd65-0932-4fb1-840b-be7c6dddde5e.jpg?v=1787038924","url":"https:\/\/www.industriaxplc.com\/id\/products\/do821-3bse013250r1-abb-s800-i-o-digital-output-relay-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}