{"product_id":"allen-bradley-1794-oa8-flex-i-o-digital-output-module","title":"Allen-Bradley 1794-OA8 FLEX I\/O Digital Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-OA8\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-OA8\u003c\/strong\u003e Digital Output Module, operates as a dedicated hardware component for alternating current discrete signal switching within FLEX I\/O platforms.\u003c\/p\u003e\n\u003ch3\u003eModel Nomenclature \u0026amp; Array Structure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1794\u003c\/strong\u003e: Designates the distributed modular hardware platform architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOA\u003c\/strong\u003e: Specifies the alternating current (AC) solid-state triac switching electronic circuit variant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8\u003c\/strong\u003e: Defines the availability of exactly 8 discrete output points on the mating block face.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e: Identifies the specific hardware production series revision line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Parameters\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1794-OA8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e15.2 x 10.2 x 15.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e120 VAC nominal voltage (50\/60 Hz frequency rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e4 A total module maximum capacity (0.5 A per channel max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eTriac discrete outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint Density\u003c\/td\u003e\n\u003ctd\u003e8 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Subsystems and Backplane Scaling\u003c\/h3\u003e\n\u003cp\u003eThe output circuit routes switching states over local backplane networks while matching baseline requirements for I\/O density scaling. When combined with EtherNet\/IP or ControlNet interface adapters, the hardware executes discrete command arrays while keeping backplane bus communication velocity stable across multi-chassis industrial control drops.\u003c\/p\u003e\n\u003ch3\u003eShipping Box Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1794-OA8 FLEX I\/O Digital Output Module\u003c\/li\u003e\n\u003cli\u003e1 x Printed Technical Installation Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Mounting and Wiring Layout\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Positioning\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRotate the structural key switch on the target terminal base unit to position 2 before trying to insert the hardware housing.\u003c\/li\u003e\n\u003cli\u003ePush the module straight down into the base tracking block until the physical snap locks click fully.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Separation Rules\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate the 120 VAC field power lines away from low-voltage DC communication bus lines inside the panel wiring channels.\u003c\/li\u003e\n\u003cli\u003eKeep alternating current switching legs segregated from nearby analog sensor cables to maintain optimal signal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Maintenance FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this solid-state module support hot-swap removal and insertion under power (RIUP)?\u003c\/p\u003e\n\u003cp\u003eYes, RIUP capability can be safely utilized when the device is deployed inside a non-hazardous field enclosure environment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum logic current load drawn from the internal backplane bus?\u003c\/p\u003e\n\u003cp\u003eThe internal processing logic requires a current maximum of 80 mA drawn directly from the 5 VDC backplane power rail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to the switching status of the triac circuits if the master processor loses connection?\u003c\/p\u003e\n\u003cp\u003eThe output states drop down to their default off position or follow predefined safe state controller parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs it possible to switch direct current loads using this triac module?\u003c\/p\u003e\n\u003cp\u003eNo, the solid-state triac component configuration is designed strictly for alternating current voltage waveforms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the minimum holding current required to keep the triac output channel in an active on state?\u003c\/p\u003e\n\u003cp\u003eThe connected field coil or inductive device must draw a baseline holding current of at least 10 mA to prevent premature circuit dropouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the peak electrical isolation value between the 120 VAC field pins and the logic backplane?\u003c\/p\u003e\n\u003cp\u003eThe integrated electrical isolation layer is tested and rated to withstand up to 1500 VAC continuous protection between fields.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the electronic module layout manage short-duration surge currents from heavy inductive loads?\u003c\/p\u003e\n\u003cp\u003eThe internal circuit allows for a brief surge current rating up to 7 A for a maximum duration of 10 ms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this hardware assembly operate correctly in sub-zero industrial storage settings?\u003c\/p\u003e\n\u003cp\u003eUnpowered storage parameters allow for temperature extremes ranging from -40 to +85 deg C without risking board failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066457510061,"sku":"1794-OA8","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1794-OA8_24.jpg?v=1784212002","url":"https:\/\/www.maxwellplc.com\/products\/allen-bradley-1794-oa8-flex-i-o-digital-output-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}