{"product_id":"abb-s800-i-o-di821-3bse008550r1-s800-digital-input-module","title":"ABB S800 I\/O DI821 3BSE008550R1 S800 Digital Input Module","description":"\u003ch2\u003eABB DI821 3BSE008550R1 S800 Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB DI821 3BSE008550R1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDI821\u003c\/strong\u003e Digital Input Module, operates as a dedicated hardware component for 230 V AC\/DC discrete signal acquisition within the ABB S800 I\/O system. It provides 8 individually isolated input channels with voltage supervision functions, optical isolation barriers, EMC protection, and configurable input filtering.\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\u003eDI821 3BSE008550R1\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\u003eDigital Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS800 I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.18 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45 mm W x 102 mm D x 119 mm H\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eTypical 2.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003eCurrent sinking\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\u003eSignal Specification\u003c\/td\u003e\n\u003ctd\u003e230 V AC, 220 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input Voltage Range\u003c\/td\u003e\n\u003ctd\u003e164 to 264 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Input Voltage Range\u003c\/td\u003e\n\u003ctd\u003e175 to 275 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e11 mA at 230 V AC; 1.6 mA at 220 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e21 kOhm AC \/ 134 kOhm DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eIndividually isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Filter Time\u003c\/td\u003e\n\u003ctd\u003e2, 4, 8, 16 ms selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Filter Delay\u003c\/td\u003e\n\u003ctd\u003e5 \/ 28 ms On\/Off delay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency Range\u003c\/td\u003e\n\u003ctd\u003e47 to 63 Hz\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\u003eModuleBus Current Consumption\u003c\/td\u003e\n\u003ctd\u003e+5 V ModuleBus: 50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e+24 V ModuleBus Consumption\u003c\/td\u003e\n\u003ctd\u003e0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e+24 V External Consumption\u003c\/td\u003e\n\u003ctd\u003e0 mA\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 Function\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Support\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\u003eCompatible MTU\u003c\/td\u003e\n\u003ctd\u003eTU811, TU813, TU831, TU839, TU851\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeying Code\u003c\/td\u003e\n\u003ctd\u003eAC\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\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95 %, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMC Compliance\u003c\/td\u003e\n\u003ctd\u003eEN 61000-6-4 and EN 61000-6-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Standards\u003c\/td\u003e\n\u003ctd\u003eEN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Certification\u003c\/td\u003e\n\u003ctd\u003eABS, BV, DNV, LR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoHS Compliance\u003c\/td\u003e\n\u003ctd\u003eEU RoHS, UAE RoHS, CN RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eABB S800 I\/O Industrial Signal Processing\u003c\/h3\u003e\n\u003cp\u003eThe ABB DI821 integrates with the S800 I\/O architecture through ModuleBus communication and supports high-voltage discrete signal monitoring. Each input channel includes current limiting components, EMC protection components, LED status indication, optical isolation, and a 6 ms analog filter.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the module provides process voltage supervision through dedicated channel monitoring. Channel 1 supervises channels 2 to 4, while channel 8 supervises channels 5 to 7. When the monitored supply voltage disappears, the module activates the corresponding error input and Warning LED indication. The diagnostic information is transferred through the ModuleBus interface.\u003c\/p\u003e\n\u003cp\u003eThe DI821 supports ABB industrial control installations requiring dense digital I\/O scaling, S800 backplane communication, and firmware-compatible module integration. Its isolated channel design separates field voltage signals from internal electronics to maintain electrical separation between process circuits and control hardware.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the DI821 provide electrical isolation between input channels?\u003cbr\u003eA: The DI821 uses individually isolated input channels. Each channel contains an optical isolation barrier together with EMC protection and current limiting components.\u003c\/p\u003e\n\u003cp\u003eQ: Can the DI821 monitor loss of field supply voltage?\u003cbr\u003eA: Yes. Channel 1 and Channel 8 can operate as voltage supervision inputs for separate channel groups. The module reports supervision errors through the ModuleBus interface.\u003c\/p\u003e\n\u003cp\u003eQ: What MTU units are compatible with the DI821 module?\u003cbr\u003eA: The DI821 supports TU811, TU813, TU831, TU839, and TU851 MTU configurations with AC keying code.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the DI821 module only in compatible ABB S800 I\/O assemblies with the correct AC keying configuration. Verify that the selected MTU matches the module specification before wiring field circuits.\u003c\/p\u003e\n\u003cp\u003eConnect field wiring according to ABB installation documentation. Maintain separation between high-voltage AC\/DC signal wiring and low-level communication or instrumentation wiring to reduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eUse proper grounding methods for cabinet assemblies and ensure cable shields follow the site grounding practice. Confirm input polarity, voltage level, and channel assignment before energizing the module.\u003c\/p\u003e\n\u003cp\u003eCheck front LED indicators after installation. Verify Run, Fault, Warning, and channel status indications through the controller diagnostic interface before placing the I\/O point into service.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44619857231960,"sku":"DI821 3BSE008550R1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/DI821-3BSE008550R1-3_1200x1200_940d0ad5-7891-488e-96ce-fce57f0af10b.jpg?v=1787046883","url":"https:\/\/www.industriaxplc.com\/products\/abb-s800-i-o-di821-3bse008550r1-s800-digital-input-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}