{"product_id":"1794-of8ih-industrial-automation-module-by-allen-bradley","title":"1794-OF8IH Industrial Automation Module by Allen-Bradley","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1794-OF8IH is a Flex I\/O module that functions as an Isolated Output HART Analog Module within the 1794 Flex I\/O system. This industrial automation module provides eight (8) single-ended, isolated outputs configurable for 0-20 mA and 4-20 mA with 16-bit resolution. Manufactured by Rockwell Automation, the 1794-OF8IH is designed for precise analog control in demanding process environments.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1794-OF8IH delivers reliable performance with the following key parameters:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1794-OF8IH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eOutput Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 isolated outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signals\u003c\/td\u003e\n\u003ctd\u003e0-20 mA; 4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Resolution\u003c\/td\u003e\n\u003ctd\u003e16-Bit; Unipolar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Method\u003c\/td\u003e\n\u003ctd\u003e16-bit digital-to-analog converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Rate\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eEngineering Units; Percent of Full Scale; RAW\/Proportional Count\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Base\u003c\/td\u003e\n\u003ctd\u003e1794-TB3, 1794-TB3S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eFactory Calibrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Current\u003c\/td\u003e\n\u003ctd\u003e80 mA @ 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (max)\u003c\/td\u003e\n\u003ctd\u003e5.0 W @ 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation (max)\u003c\/td\u003e\n\u003ctd\u003e17.06 BTU\/hr @ 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e32 to 131 degrees Fahrenheit\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\u003eHART Capability:\u003c\/strong\u003e The 1794-OF8IH supports pass-through messages with 1 or 2 connections, each handling 8 queues, enabling seamless communication with HART devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Output Configuration:\u003c\/strong\u003e Each channel can be independently programmed for 0-20 mA or 4-20 mA ranges, accommodating diverse application requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Alarms:\u003c\/strong\u003e The module detects lead breakages and provides alarms for overrange and underrange current conditions, enhancing system reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Jumper or Switch Settings:\u003c\/strong\u003e Simplifies installation and reduces setup errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Power Supply:\u003c\/strong\u003e Operates without an external power supply, drawing power from the FlexBus at 80 mA @ 5V DC.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1794-OF8IH is ideal for applications requiring precise analog output control with HART communication. Typical use cases include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Control:\u003c\/strong\u003e Regulating valve positioners or variable speed drives in chemical and petrochemical plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil \u0026amp; Gas:\u003c\/strong\u003e Controlling flow and pressure loops in remote terminal units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Treatment:\u003c\/strong\u003e Managing chemical dosing pumps and filtration systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eInstall the Allen-Bradley 1794-OF8IH onto a compatible terminal base (1794-TB3 or 1794-TB3S). Rotate the keyswitch to position 4 to lock the module securely. The module is factory calibrated, so no manual calibration is required. Ensure the FlexBus current does not exceed 80 mA @ 5V DC and that the ambient temperature remains within 32 to 131 degrees Fahrenheit.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe 1794-OF8IH is designed for long-term reliability. Regularly inspect the terminal base connections and verify that the module remains firmly seated. Monitor the ambient temperature to prevent overheating, as the module dissipates up to 5.0 W @ 24V DC. The built-in diagnostic alarms help identify wiring issues early, minimizing downtime.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThis module is part of the Flex I\/O 1794 series and integrates seamlessly with Allen-Bradley control systems. It supports pass-through messaging for HART devices, allowing direct communication with smart field instruments. The module works with standard Flex I\/O terminal bases and is compatible with various Rockwell Automation controllers that support Flex I\/O adapters.\u003c\/p\u003e\u003ch2\u003eBuying Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Allen-Bradley 1794-OF8IH, verify that your existing system includes a compatible Flex I\/O adapter and terminal base. Confirm the required output range (0-20 mA or 4-20 mA) and ensure the ambient temperature meets the operating limits. For genuine parts and reliable service, choose PLC Source PRO as your supplier.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44454095323235,"sku":"1794-OF8IH","price":278.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1794-ACN15_202_a05992f1-6ccb-41d1-b130-6d2d40f1ae18.jpg?v=1786122122","url":"https:\/\/www.plcsourcepro.com\/products\/1794-of8ih-industrial-automation-module-by-allen-bradley","provider":"PLC Source PRO","version":"1.0","type":"link"}