{"product_id":"abb-di825-8-channel-125-v-dc-digital-input-module-for-s800-i-o","title":"ABB DI825 8-Channel 125 V DC Digital Input Module for S800 I\/O","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe ABB DI825 is an 8-channel, 125 V DC digital input module engineered for the S800 I\/O system. It accepts input voltages from 71 to 156 V for logic \"1\" and 0 to 20 V for logic \"0\", with a typical input current of 3.0 mA at 125 V. Each channel is individually isolated, providing robust performance in electrically noisy industrial environments.\u003c\/p\u003e\u003cp\u003eEvery input channel integrates current limiting, EMC protection, an input status LED, and an optical isolation barrier. Channels 1 and 8 can serve as voltage supervision inputs for their respective groups (channels 2–4 and 5–7). If the supervised voltage disappears, the module sets a channel error and activates the Warning LED, readable via the ModuleBus.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003e3BSE036373R1\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\u003eSignal Specification\u003c\/td\u003e\n\u003ctd\u003e125 V d.c.\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 Type\u003c\/td\u003e\n\u003ctd\u003eCurrent sinking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range (\"0\")\u003c\/td\u003e\n\u003ctd\u003e0 – 20 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range (\"1\")\u003c\/td\u003e\n\u003ctd\u003e71 – 156 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e41.5 kΩ\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\u003eFilter Times (digital, selectable)\u003c\/td\u003e\n\u003ctd\u003e0 – 100 ms\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\u003eEvent Recording Accuracy\u003c\/td\u003e\n\u003ctd\u003e-0.25 ms...1.0 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvent Recording Resolution\u003c\/td\u003e\n\u003ctd\u003e0.4 ms\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\u003e2300 V a.c. Ch–Ground, 1350 V a.c. Ch–Ch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eMax. 4.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption +5 V Modulebus\u003c\/td\u003e\n\u003ctd\u003eMax. 90 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption +24 V Modulebus\u003c\/td\u003e\n\u003ctd\u003e0\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\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd\u003e45 mm x 102 mm (111 mm with connector) x 119 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.14 kg (0.31 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\u003e8 channels for 125 V d.c. inputs\u003c\/li\u003e\n\u003cli\u003eIndividually isolated channels for superior noise immunity\u003c\/li\u003e\n\u003cli\u003eInput status indicators for quick diagnostics\u003c\/li\u003e\n\u003cli\u003eSequence of Event (SOE) functionality with high-resolution timestamping\u003c\/li\u003e\n\u003cli\u003eSelectable digital filtering to suppress transients\u003c\/li\u003e\n\u003cli\u003eProcess voltage supervision via channels 1 and 8\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple MTUs: TU811, TU813, TU831, TU839, TU851\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe ABB DI825 excels in high-voltage sensing applications across process industries. Its 125 V DC input range and individual isolation make it ideal for monitoring relay contacts, limit switches, and control signals in power distribution, chemical processing, and water treatment plants. The SOE capability allows precise event logging for post-incident analysis, reducing downtime and improving system reliability.\u003c\/p\u003e\u003cp\u003eIn a typical power substation, the DI825 can supervise breaker status and alarm signals. The voltage supervision feature ensures that even if a sensor supply fails, the module flags the affected channels immediately, enabling rapid response.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eMount the ABB DI825 onto a standard S800 I\/O rail and connect it via the appropriate MTU (e.g., TU811V1). Ensure the field wiring is terminated correctly: current sinking inputs require a common positive supply. Use shielded cables for long runs (up to 600 meters) to minimize electromagnetic interference. Configure the digital filter times via the control system to match your signal characteristics.\u003c\/p\u003e\u003cp\u003eFor voltage supervision, connect the process voltage to channel 1 or 8 and set the corresponding group supervision in the configuration software. Verify the ModuleBus connection and power supply (+5 V, max 90 mA) before energizing the field inputs.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRoutine maintenance is minimal. Periodically inspect the module for dust accumulation and ensure the ambient temperature stays within 0 to +55 °C (32 to +131 °F). The module's EMC protection (EN 61000-6-4 and EN 61000-6-2) and dielectric isolation (2300 V a.c.) ensure long-term reliability in harsh environments. Check the front LEDs (Fault, Run, Warning, and channel status) during startup to confirm proper operation.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe ABB DI825 is part of the ABB S800 I\/O family, seamlessly integrating with ABB AC 800M controllers and other systems via the ModuleBus. It works with MTUs TU811, TU813, TU831, TU839, and TU851. The module supports HART (No) and is not redundant, high-integrity, or intrinsically safe, making it suitable for general-purpose industrial automation.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing, verify the DI825's compatibility with your existing MTU and controller. Confirm the power supply specifications (5 V Modulebus, max 90 mA) and the environmental requirements (IP20, pollution degree 2). For high-voltage applications, ensure the field wiring meets the rated insulation voltage of 250 V. PLC Source PRO offers genuine ABB DI825 modules with fast worldwide shipping.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default","offer_id":44443604287587,"sku":"DI825","price":271.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/DI825__E5_89_AF_E6_9C_AC-c1.jpg?v=1785929303","url":"https:\/\/www.plcsourcepro.com\/ar\/products\/abb-di825-8-channel-125-v-dc-digital-input-module-for-s800-i-o","provider":"PLC Source PRO","version":"1.0","type":"link"}