{"product_id":"ab-1794-im8-220v-ac-digital-input-module-8-channel","title":"AB 1794-IM8 | 220V AC Digital Input Module 8-Channel","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1794-IM8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-density AC input solution for the FLEX I\/O platform. It interfaces eight 220V to 240V AC field signals—such as those from motor starters, pumps, and lighting circuits—directly into your control architecture. Its modular design eliminates the need for interposing relays or voltage transformers, allowing the PLC to monitor high-voltage industrial equipment directly. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein factory packaging, ensuring full compatibility with Series A installations and standard 1794 terminal bases.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 (Non-isolated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNominal Input Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e240V AC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-State Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e79V to 265V AC (47–63 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNominal Input Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 mA @ 240V AC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Off-State Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40V AC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Off-State Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.6 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e22.3 kΩ (Nominal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFlexbus Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30 mA @ 5V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.5 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V Continuous\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 55 °C (32 to 131 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Net Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.06 kg (0.13 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.50 kg (Includes robust protective packaging)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect High-Voltage Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1794-IM8 accepts signals up to 265V AC. This capability allows engineers to monitor the status of mains-powered motors and lighting systems without installing step-down transformers, significantly reducing cabinet complexity and material costs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Panel Footprint:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy integrating 8 high-voltage points into a compact 9.4cm x 9.4cm profile, this module optimizes rail space. The FLEX I\/O architecture allows for distributed placement, moving the I\/O closer to the field devices to shorten sensitive wiring runs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHot-Swappable Functionality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module supports Removal and Insertion Under Power (RIUP). Maintenance teams can replace a faulty module without shutting down the entire 1794 system backplane, preventing costly unplanned production downtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHazardous Location Approved:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCertified for demanding environments (UL, CSA, CE), the 1794-IM8 operates reliably in sectors like oil and gas, chemical processing, and heavy manufacturing where electrical integrity is non-negotiable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich terminal base units are compatible with the 1794-IM8?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor the 1794-IM8, we recommend using the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TBN\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TBNK\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(kote version for corrosion resistance) terminal base units. These bases provide the necessary terminal spacing and electrical ratings required for high-voltage AC wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module provide isolation between individual channels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1794-IM8 provides isolation between the field-side AC inputs and the internal Flexbus system logic (up to 250V continuous). However, the eight input channels themselves are non-isolated from each other, meaning they share a common reference point on the terminal base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 8 yellow status indicators?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach LED on the front panel corresponds to an input channel. A lit LED confirms that the module detects an \"On-state\" voltage (greater than 79V AC) at that specific terminal. This feature allows for rapid visual troubleshooting without requiring a laptop or multimeters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1749-IM8 on a 110V AC system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the module technically switches \"On\" starting at 79V AC, it is optimized for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e220V\/240V AC nominal systems\u003c\/strong\u003e. For dedicated 110V\/120V AC applications, we suggest using the 1794-IA8 or 1794-IA16 modules to ensure the input impedance and current thresholds match your source.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43359229968474,"sku":"1794-IM8","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/11._97f92a02-ce87-4dac-a416-557da5d6696f.jpg?v=1778639182","url":"https:\/\/www.spareoil.com\/products\/ab-1794-im8-220v-ac-digital-input-module-8-channel","provider":"SpareOil Automation","version":"1.0","type":"link"}