{"product_id":"di840-3bse020836r1-abb-s800-i-o-digital-input-module-24v-dc-soe","title":"DI840 3BSE020836R1 ABB S800 I\/O Digital Input Module 24V DC SOE","description":"\u003ch3\u003e\u003cb\u003eProduct Overview\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003eDI840\u003c\/strong\u003e (Article Number \u003cstrong style=\"color: #0056b3;\"\u003e3BSE020836R1\u003c\/strong\u003e) is a 16-channel, 24 V d.c. Digital Input Module designed by \u003cstrong style=\"color: #0056b3;\"\u003eABB\u003c\/strong\u003e for the \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/s800-i-o\"\u003e\u003cstrong style=\"color: #0056b3;\"\u003eS800 I\/O\u003c\/strong\u003e\u003c\/a\u003e system. Engineered for high-availability process automation, this current-sinking module supports both single and redundant backplane configurations, delivering millisecond-accurate event capture across mission-critical plant architectures.\u003c\/p\u003e\n\u003cp\u003eOperating within an input range of 18 to 30 V d.c., the \u003cstrong style=\"color: #0056b3;\"\u003eDI840\u003c\/strong\u003e features high-precision Sequence of Events (SOE) timestamping with 1 ms resolution and an integrated 257-event queue. Each pair of channels provides current-limited transducer power distribution and internal shutter filtering to eliminate spurious signal chatter, offloading diagnostic and timing loads from the host controller.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSystem Architecture \u0026amp; Advanced Telemetry Features\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Precision Sequence of Events (SOE)\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eCaptures state changes with 1 ms resolution and an accuracy window of 0 ms \/ +1.3 ms.\u003c\/li\u003e\n\u003cli\u003eOnboard event buffer stores up to 257 timestamped events to prevent data loss during network traffic spikes.\u003c\/li\u003e\n\u003cli\u003eIntegrated shutter filter suppresses contact bounce and signal noise before event logging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSupervised Transducer Power Distribution\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eIndividual short-circuit protected sensor power outputs allocated per two input channels.\u003c\/li\u003e\n\u003cli\u003eMonitors transducer current draw and field voltage levels continuously to report sensor line faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Hardware Redundancy\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eFully compatible with dual-channel redundant MTUs (e.g., TU842, TU843) for hot-standby I\/O configurations.\u003c\/li\u003e\n\u003cli\u003eOptical isolation barrier rated for 50 V insulation and 500 V a.c. dielectric testing protects backplane electronics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePart Number\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong style=\"color: #0056b3;\"\u003eDI840\u003c\/strong\u003e (Article No: \u003cstrong style=\"color: #0056b3;\"\u003e3BSE020836R1\u003c\/strong\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eManufacturer \u0026amp; Family\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong style=\"color: #0056b3;\"\u003eABB\u003c\/strong\u003e \/ \u003cstrong style=\"color: #0056b3;\"\u003eS800 I\/O\u003c\/strong\u003e Platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eModule Type\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V d.c. Redundant Digital Input Card with SOE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eNumber of Channels\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e16 Channels (1 Group Isolated from Ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSignal Type\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent Sinking (7 mA @ 24 V d.c.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eState '1' Voltage Range\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e11 to 30 V d.c.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eState '0' Voltage Range\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 to +5 V d.c.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eInput Impedance\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eDigital Filter Settings\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eSelectable Software Delays from 0 to 127 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eModuleBus Power Draw\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e100 mA @ +5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eExternal Power Draw\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e15 mA + Transducer Power (Max 335 mA @ +24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eHeat Dissipation\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eTypically 2.7 W Internal Load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eCompatible Terminal Units (MTUs)\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eTU810, TU810V1, TU812, TU814, TU818, TU830, TU833, TU838, TU842, TU843, TU852\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eMechanical Keying Code\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eDimensions \u0026amp; Weight\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e45 mm W x 102 mm D x 119 mm H | 0.15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cb\u003eDiagnostic Capabilities \u0026amp; Status Indication\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFront LED Telemetry Panel:\u003c\/b\u003e Dedicated status LEDs for Fault (F), Run (R), Warning (W), and individual channel states (1–16).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eField \u0026amp; Internal Supervision:\u003c\/b\u003e Continuous real-time detection of process voltage loss, internal logic failures, and sensor circuit overload.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eModuleBus Error Flags:\u003c\/b\u003e Transmits explicit Module Error, Module Warning, and Channel Error telemetry packets directly to System 800xA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTarget Application Scenarios \u0026amp; Industrial Systems\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eEmergency Shutdown (ESD) Systems:\u003c\/b\u003e Tracks critical trip pushbuttons and safety interlocks where 1 ms SOE logging is mandatory for root-cause analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Availability Redundant Loops:\u003c\/b\u003e Paired with redundant MTUs on turbine control and offshore production platforms to allow non-disruptive card replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHazardous Location Automation:\u003c\/b\u003e Certified for Class 1 Div 2, ATEX Zone 2, and C1 Zone 2 installations with G3 harsh environment coating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eInstallation \u0026amp; Module Configuration Guidelines\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMechanical Keying Alignment:\u003c\/b\u003e Set mechanical keying pins on the target MTU baseplate to position 'CD' prior to card insertion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThermal Operating Limits:\u003c\/b\u003e Supports up to 55°C in standard horizontal configurations; limit ambient temperature to 40°C when installed vertically in compact baseplates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eField Wiring Distances:\u003c\/b\u003e Accommodates field cabling runs up to 600 meters (656 yards) while retaining pulse recognition accuracy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003ePackaging, Logistics \u0026amp; Warranty Terms\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDispatch Lead Time:\u003c\/b\u003e In-stock factory original units processed and ready for shipment within 24 to 48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eExpress International Shipping:\u003c\/b\u003e Global delivery provided via priority carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePackaging Quality:\u003c\/b\u003e Ships 100% Brand New and Original in sealed anti-static protective packaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e12-Month Coverage:\u003c\/b\u003e Backed by a full 12-month quality replacement warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eEngineering Procurement Guide\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eEvaluate SOE Requirements:\u003c\/b\u003e Verify if your DCS software license supports millisecond Sequence of Events timestamping before deploying SOE features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSelect Matching MTU Baseplate:\u003c\/b\u003e Choose a redundant baseplate (e.g., TU842 or TU843) for high-availability loops, or standard baseplates (e.g., TU810V1) for single configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCalculate Total 24VDC Power Budget:\u003c\/b\u003e Account for the maximum 335 mA current draw per card when sizing external field power supplies powering field transducers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions (FAQ)\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: How does the 257-event queue handle event overflow during a major plant trip?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The onboard memory buffers incoming state changes sequentially at 1 ms resolution, holding events until the ModuleBus controller completes polling execution.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the main operational purpose of the built-in shutter filter?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The shutter filter suppresses transient chatter and rapid contact bounce from field switches, preventing the event queue from filling with junk data.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Can this input card be hot-swapped while installed on a redundant baseplate?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, in redundant baseplate setups, replacing one card leaves the companion card active and processing field signals without interrupting plant operations.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: How does the module react if a short circuit occurs on a field sensor cable?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The internal transducer power current limiter caps the short-circuit current, isolates the affected channel pair, and triggers a front panel Warning LED.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the functional difference between an SOE input module and a standard digital input card?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Standard cards register inputs based on PLC scan cycle frequency, while SOE modules append hardware time tags (1 ms) directly at the input hardware level.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eGlobal PLC Spare HUB's Insight\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eDuring a post-trip investigation at an offshore gas compression platform, plant engineers struggled to identify the primary root cause of a sudden compressor shutdown. The standard digital input modules logged all safety interlocks within the same 50 ms controller scan window, making it impossible to determine which field switch tripped first.\u003c\/p\u003e\n\u003cp\u003eOur technical team recommended upgrading the critical safety loops to the \u003cstrong style=\"color: #0056b3;\"\u003eDI840 3BSE020836R1\u003c\/strong\u003e sequence-of-events module. Utilizing its 1 ms hardware timestamping and 257-event onboard buffer, the engineering team gained precise sequence tracking for all ESD field contacts. During the next trip event, technicians pinpointed a failing lube oil pressure switch within minutes, preventing hours of unnecessary diagnostic downtime.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45435162984630,"sku":"DI840","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/DI840-3.jpg?v=1789021694","url":"https:\/\/www.plcsparehub.com\/products\/di840-3bse020836r1-abb-s800-i-o-digital-input-module-24v-dc-soe","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}