{"product_id":"di820-3bse008512r1-abb-s800-i-o-digital-input-module-120v-ac-dc","title":"DI820 3BSE008512R1 ABB S800 I\/O Digital Input Module - 120V AC\/DC","description":"\u003ch3\u003e\u003cb\u003eProduct Overview\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003eDI820\u003c\/strong\u003e (Article Number \u003cstrong style=\"color: #0056b3;\"\u003e3BSE008512R1\u003c\/strong\u003e) is a high-voltage, channel-isolated Digital Input Module designed by \u003cstrong style=\"color: #0056b3;\"\u003eABB\u003c\/strong\u003e for the \u003cstrong style=\"color: #0056b3;\"\u003eS800 I\/O\u003c\/strong\u003e expansion family. Engineered for harsh industrial environments, this 8-channel current-sinking module handles wide-spectrum high-voltage inputs spanning 77 to 130 V a.c. and 75 to 145 V d.c. without external dropping resistors.\u003c\/p\u003e\n\n\u003cp\u003eEvery individual input channel features galvanic optical isolation, current-limiting circuitry, transient EMC suppression, and a hardware analog filter (6 ms). Crucially, channels 1 and 8 can be configured as field process voltage supervision inputs for their respective channel groups (2–4 and 5–7), broadcasting system-level warning status across the backplane ModuleBus and illuminating front-panel fault LEDs upon line voltage drop.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eSystem Architecture \u0026amp; Channel Engineering\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eGalvanic Channel-to-Channel Isolation\u003c\/b\u003e\n    \u003cul\u003e\n      \u003cli\u003eIndividually isolated input channels rated for 250V insulation voltage and tested up to 2000V a.c. dielectric withstand voltage.\u003c\/li\u003e\n      \u003cli\u003ePrevents cross-channel noise propagation and ground loops between disparate field power sources.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eIntegrated Field Voltage Supervision\u003c\/b\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cb\u003eGroup 1 Supervision:\u003c\/b\u003e Channel 1 continuously monitors field input power for channels 2 through 4.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eGroup 2 Supervision:\u003c\/b\u003e Channel 8 continuously monitors field input power for channels 5 through 7.\u003c\/li\u003e\n      \u003cli\u003eIn the event of supply voltage loss, internal error flags activate, lighting the front Warning LED and reporting telemetry over ModuleBus.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eAdvanced Filtering \u0026amp; Cable Capabilities\u003c\/b\u003e\n    \u003cul\u003e\n      \u003cli\u003eHardware analog filter providing fixed 5 ms ON delay and 18 ms OFF delay.\u003c\/li\u003e\n      \u003cli\u003eSelectable digital filtering configurable for 2, 4, 8, or 16 ms scan intervals.\u003c\/li\u003e\n      \u003cli\u003eExtended field wiring limits supporting up to 200 meters (a.c. runs @ 100 pF\/m) and 600 meters (d.c. runs).\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003ePart Number\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003e\n\u003cstrong style=\"color: #0056b3;\"\u003eDI820\u003c\/strong\u003e (Article No: \u003cstrong style=\"color: #0056b3;\"\u003e3BSE008512R1\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 Series\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003eModule Type\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003eHigh-Voltage Digital Input Module\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\u003e8 Individually Isolated Channels\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 (120 V a.c. \/ 110 V d.c.)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003eAC Input Range (State '1')\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003e77 to 130 V a.c. (10 mA @ 120 V a.c., 47–63 Hz)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003eDC Input Range (State '1')\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003e75 to 145 V d.c. (2.8 mA @ 110 V d.c.)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003eInput State '0' Voltage\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003e0 to 30 V a.c. \/ 0 to 20 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\u003e12 kΩ (a.c.) \/ 39 kΩ (d.c.)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cb\u003ePower Dissipation\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd\u003eTypically 2.8 W Total Internal Dissipation\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\u003e50 mA @ +5 VDC (0 mA @ +24 VDC \/ Ext)\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\u003eTU811, TU811V1, TU813, TU831, TU839, TU851\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\u003eAB\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 | 0.18 kg\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cb\u003eDiagnostic Capabilities \u0026amp; Front Panel Telemetry\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eFront Panel LED Array:\u003c\/b\u003e Features individual status LEDs for Fault (F), Run (R), Warning (W), and individual input channels for instant visual verification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eModuleBus Error Messaging:\u003c\/b\u003e Distinguishes between Module Error, Module Warning, and individual Channel Errors directly to the 800xA \/ Compact Products 800 controller.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eProcess Voltage Drop Alert:\u003c\/b\u003e Triggers automatic software alerts when auxiliary field power supplies drop below minimum operating thresholds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eTarget Application Scenarios \u0026amp; Systems\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eSubstation Control \u0026amp; MCC Feedback:\u003c\/b\u003e Monitors 110 V d.c. trip coil status, breaker auxiliary contacts, and disconnect switches in power utility installations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eHigh-Voltage Plant Interlocks:\u003c\/b\u003e Direct connection to 120 V a.c. motor starters, safety limit switches, and control relays without interposing isolation relays.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eChemical \u0026amp; Refining Facilities:\u003c\/b\u003e Installed in severe atmospheric conditions with G3 harsh environment coating (ISA-S71.04) compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eInstallation \u0026amp; Module Termination Guidelines\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eMechanical Mounting Orientation:\u003c\/b\u003e Operates up to 55°C in horizontal configurations; maximum ambient rating is 40°C when vertically mounted in compact MTUs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eKeying Pin Alignment:\u003c\/b\u003e Align the mechanical keying switches on the target Module Termination Unit (MTU) to position 'AB' prior to insertion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSupervision Wiring Configuration:\u003c\/b\u003e Connect group field power feeds to channel 1 (for channels 2–4) and channel 8 (for channels 5–7) to leverage automatic voltage monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 original factory inventory dispatched within 24 to 48 hours.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003ePriority Global Logistics:\u003c\/b\u003e Rapid air express shipping via FedEx, UPS, and DHL.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eFactory Sealed Quality:\u003c\/b\u003e Delivered 100% Brand New and Original in protective industrial packaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003e12-Month Coverage:\u003c\/b\u003e Fully supported by a 12-month quality replacement warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eEngineering Procurement Guide\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eConfirm Field Voltage Levels:\u003c\/b\u003e Ensure field signals fall strictly within 77–130 V a.c. or 75–145 V d.c. to guarantee proper logic state transitions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eVerify Baseplate Selection:\u003c\/b\u003e Pair with the TU811V1 or compatible MTUs based on field wiring type and terminal screw requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eCalculate Thermal Loading:\u003c\/b\u003e Budget for a maximum module dissipation of 2.8 W per card when calculating cabinet heat load and ventilation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions (FAQ)\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: What happens if field power to channel 1 drops while channels 2 through 4 remain active?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The supervision circuit flags a process voltage error, lights the front Warning LED, and sends a warning telemetry packet over the ModuleBus.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Is an external interposing relay required to connect 120V AC limit switches to this card?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the input channels natively accept up to 130V AC signals directly due to built-in optical isolation barriers and voltage limiters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Can this module be installed onto a standard compact MTU in vertical orientation?\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003eA: Yes, but the maximum allowable operating ambient temperature decreases from 55°C down to 40°C due to vertical convection flow limits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What is the main functional difference between the digital filter and the analog filter settings?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The hardware analog filter provides fixed physical signal smoothing (5ms\/18ms), whereas the selectable digital filter offers configurable software scan delays (2 to 16ms).\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: How does individual channel isolation protect the main host controller?\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003eA: Each input channel maintains galvanic isolation up to 2000V AC, preventing field surges or short circuits from damaging adjacent channels or the backplane.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eGlobal PLC Spare HUB's Insight\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eIn a thermal power station retrofit, engineers were experiencing intermittent control faults caused by ground potential differences between far-apart motor control centers and the central DCS. Standard non-isolated digital input cards were frequently damaged by high-voltage field spikes originating from 110 V d.c. trip circuits.\u003c\/p\u003e\n\n\u003cp\u003eOur technical team advised replacing the legacy input cards with the \u003cstrong style=\"color: #0056b3;\"\u003eDI820 3BSE008512R1\u003c\/strong\u003e module. Featuring 2000V dielectric channel-to-channel isolation and integrated process voltage supervision on channels 1 and 8, the module instantly eliminated ground loop issues. Field technicians were also able to pinpoint blown field fuses immediately thanks to the front Warning LED and ModuleBus alerts, reducing diagnostic downtime by more than 80%.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45435152761014,"sku":"DI820","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/DI820.jpg?v=1789023017","url":"https:\/\/www.plcsparehub.com\/products\/di820-3bse008512r1-abb-s800-i-o-digital-input-module-120v-ac-dc","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}