{"product_id":"allen-bradley-1794-oe8h-flex-i-o-8-channel-analog-hart-output-module","title":"Allen Bradley 1794-OE8H FLEX I\/O 8-Channel Analog HART Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1794-OE8H\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-density analog output interface within the modular FLEX I\/O platform. This module converts digital controller data into 8 precise analog signals to drive actuators, valves, and positioners in complex process loops. Crucially, it supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHART (Highway Addressable Remote Transducer) protocol\u003c\/strong\u003e, enabling bidirectional communication with smart field devices. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Factory Original\u003c\/strong\u003e, guaranteeing compatibility with your high-availability control systems.\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\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification 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 Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Single-ended Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtocol Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHART Pass-through\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Style\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOpen-style (IP20 rated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFLEX I\/O Backplane\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eChannel-to-Backplane Electrical Isolation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHorizontal or Vertical DIN Rail\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIndicators\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePower and I\/O Status LEDs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.44 lbs (0.20 kg)\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\u003eAdvanced HART Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1794-OE8H facilitates HART pass-through, allowing maintenance teams to access device calibration data and diagnostics remotely. This eliminates the need for technicians to physically access field instruments in hazardous areas, significantly reducing maintenance downtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpace-Efficient Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module packs 8 high-resolution analog outputs into the compact FLEX I\/O footprint. By maximizing channel density, it reduces the number of terminal bases and I\/O racks required, lowering overall hardware costs and cabinet space requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Signal Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features comprehensive channel-to-backplane electrical isolation. This architecture protects the sensitive controller logic from field-side electrical surges and ground loops, ensuring long-term system stability in electrically noisy industrial environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Wiring and Installation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe open-style design snaps directly onto standard DIN rails. It utilizes a separate terminal base (sold separately) which allows you to pre-wire the system before installing the module, preventing damage to the electronics during the heavy construction phase of a project.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1764-OE8H require a specific terminal base?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, you must install the 1794-OE8H on a compatible FLEX I\/O terminal base, such as the 1794-TB3G or 1794-TB3GS. These bases provide the necessary connection points for the 24V DC power and the 8 analog output loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the HART pass-through feature benefit process diagnostics?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HART pass-through allows the control system to \"see through\" the analog signal to read the digital metadata from the field device. You can monitor device health, secondary variables, and configuration status without interrupting the 4-20mA control signal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a standard 1794-OE8 module with the 1794-OE8H?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the physical footprint remains the same, the 1794-OE8H adds HART functionality. You may need to update your I\/O configuration in RSLogix 5000 \/ Studio 5000 and ensure your communication adapter (such as an Ethernet\/IP or ControlNet adapter) supports the additional HART data packets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the condition of this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee this product is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein its original Allen Bradley factory packaging. We do not deal in refurbished or used surplus; you receive a factory-fresh unit with full technical integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53446861390008,"sku":"1794-OE8H","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1794-OE8H.jpg?v=1778227471","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1794-oe8h-flex-i-o-8-channel-analog-hart-output-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}