{"product_id":"abb-di840-industrial-automation-module-reliable-industrial","title":"ABB DI840 Industrial Automation Module - Reliable Industrial","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe ABB DI840 is a 16-channel 24 V d.c. digital input module engineered for single or redundant applications in demanding industrial environments. It delivers reliable signal acquisition with advanced diagnostics and sequence-of-events (SOE) capabilities, making it a cornerstone for modern control systems.\u003c\/p\u003e\u003cp\u003eEach input channel integrates current limiting, EMC protection, an input status LED, and an optical isolation barrier—ensuring robust performance and clear visual feedback. The module supports current sinking inputs, offers groupwise isolation from ground, and provides supervised, current-limited transducer power (one output per two channels).\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe table below summarizes key parameters for the ABB DI840. All values are sourced from the official product data.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eArticle number\u003c\/td\u003e\n\u003ctd\u003e3BSE020836R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDigital Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of channels\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput voltage range, \"0\"\u003c\/td\u003e\n\u003ctd\u003e-30..+5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput voltage range, \"1\"\u003c\/td\u003e\n\u003ctd\u003e11..30 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e3.3 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput current at 24 V d.c.\u003c\/td\u003e\n\u003ctd\u003e7 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eGroupwise isolated from ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter times (digital, selectable)\u003c\/td\u003e\n\u003ctd\u003e0 to 127 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvent recording resolution\u003c\/td\u003e\n\u003ctd\u003e1 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvent queue capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 257 events\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum field cable length\u003c\/td\u003e\n\u003ctd\u003e600 meters (656 yards)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated insulation voltage\u003c\/td\u003e\n\u003ctd\u003e50 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric test voltage\u003c\/td\u003e\n\u003ctd\u003e500 V a.c.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower dissipation\u003c\/td\u003e\n\u003ctd\u003eTyp. 2.7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent consumption +5 V Modulebus\u003c\/td\u003e\n\u003ctd\u003e100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent consumption +24 V external\u003c\/td\u003e\n\u003ctd\u003e15 mA + transducer power, max 335 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e0 to +55 °C (+32 to +131 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 °C (-40 to +158 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection class\u003c\/td\u003e\n\u003ctd\u003eIP20 (IEC 60529)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e45 x 119 x 102 mm (1.77\" x 4.7\" x 4.01\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 kg (0.33 lbs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 channels\u003c\/strong\u003e for 24 V d.c. inputs with current sinking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence of Events (SOE)\u003c\/strong\u003e with 1 ms resolution and 257-event queue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy support\u003c\/strong\u003e for single or redundant applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced on-board diagnostics\u003c\/strong\u003e with front LEDs and supervision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer power distribution\u003c\/strong\u003e with built-in current limiting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroupwise isolation\u003c\/strong\u003e from ground (1 group of 16)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with multiple MTUs\u003c\/strong\u003e (TU810, TU812, TU814, TU818, TU830, TU833, TU838, TU842, TU843, TU852)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe ABB DI840 excels in applications where high-speed event capture and reliable input monitoring are critical. Typical use cases include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess control systems\u003c\/strong\u003e in chemical plants, where SOE helps analyze sequence-of-events during alarms or trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower generation\u003c\/strong\u003e and distribution, where redundant configurations ensure uninterrupted monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing lines\u003c\/strong\u003e requiring precise digital input sensing with groupwise isolation to prevent ground loops.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIts wide input voltage range (18–30 V d.c.) and robust EMC protection make it suitable for harsh industrial environments.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eMount the ABB DI840 onto a standard S800 I\/O rail. Connect the field wiring to the appropriate MTU (e.g., TU810V1) using the recommended cable lengths (up to 600 meters). Ensure the input voltage stays within the specified range (18–30 V d.c.) to avoid false readings. For redundant applications, configure the module accordingly in the control system software.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe DI840 is designed for long-term reliability. Its built-in current limiting protects against overcurrent conditions, and the optical isolation barrier reduces wear on internal components. Periodically inspect the front LEDs for fault or warning indications. Keep the module within operating temperature limits (0 to +55 °C) and avoid condensation (relative humidity 5–95%, non-condensing). The module is CE marked and certified for hazardous locations (C1 Div 2, Zone 2, ATEX) and marine applications (BV, DNV, LR).\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe ABB DI840 integrates seamlessly with ABB's S800 I\/O system. It pairs with MTUs TU810, TU812, TU814, TU818, TU830, TU833, TU838, TU842, TU843, and TU852. The keying code is CD, ensuring correct insertion. The module supports both single and redundant configurations, making it versatile for various DCS architectures.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore ordering, verify your system's compatibility with the DI840's specifications. Confirm the required number of channels, input voltage, and whether you need SOE functionality. If you are replacing an existing module, check the article number (3BSE020836R1) to ensure exact match. For bulk or project-based purchases, contact PLC Source PRO for availability and pricing. We are a trusted supplier of genuine ABB industrial automation parts.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default","offer_id":44443607760995,"sku":"DI840","price":247.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/DI840.jpg?v=1785929655","url":"https:\/\/www.plcsourcepro.com\/products\/abb-di840-industrial-automation-module-reliable-industrial","provider":"PLC Source PRO","version":"1.0","type":"link"}