{"product_id":"1794-ow8-allen-bradley-flex-i-o-8-channel-isolated-relay-output-module","title":"1794-OW8 | Allen-Bradley | FLEX I\/O 8-Channel Isolated Relay Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1794-OW8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-density relay output interface within the FLEX I\/O modular platform. This module provides eight individually isolated Form A (normally open) relay contacts, allowing the PLC to control diverse AC and DC loads from a single distributed node. It bridges the gap between low-level logic and high-power field devices like motor starters, solenoid valves, and indicators. We provide this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, ensuring your control architecture utilizes factory-fresh contacts with zero mechanical wear.\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1794-OW8\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\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 Isolated Relay Outputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRelay Contact Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V AC \/ 30V DC, 2 A (Resistive)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMinimum Contact Load\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100 μA @ 100 mV DC\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\u003e5V DC, 35 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eExternal Supply Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC, 125 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBounce Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.2 Milliseconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSwitching Frequency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 operation per 3 seconds (max at rated load)\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\u003eVibration Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5g @ 10 to 500 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShock Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30g\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\u003cp\u003eThe 1794-OW8 addresses critical isolation and load-switching challenges in distributed control environments through specialized hardware design:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Channel Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module provides individual isolation for all eight relay outputs. This architecture prevents electrical noise or faults on one circuit from propagating to adjacent channels or the central FLEX I\/O backplane, significantly increasing overall system availability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Voltage Handling:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe relay contacts manage a wide spectrum from 5V DC up to 250V AC. This allows engineers to mix different voltage levels and load types (Resistive or Pilot Duty R150) on the same module, reducing the need for multiple specialized output cards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Level Signal Switching:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a minimum contact load of 100 μA at 100 mV DC, the 1794-OW8 reliably switches very low-power signals. This capability overcomes the \"contact wetting\" issues often found in standard industrial relays when used with high-impedance electronic inputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Diagnostic Visibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEight dedicated yellow status indicators provide instantaneous visual feedback for each output state. This feature simplifies field troubleshooting by allowing technicians to verify PLC command execution at a glance without utilizing a programming terminal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact DIN Rail Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module snaps directly onto compatible terminal bases (1794-TB2, TB3, TBN, etc.). This modular approach minimizes enclosure wiring and permits high-density I\/O packing in restricted spaces, common in remote marshalling cabinets.\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\u003eWhich terminal bases are compatible with the 1794-OW8?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module interfaces with several FLEX I\/O bases, including the 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, and the fused 1794-TBNF. Select the base that best fits your field wiring and fusing requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1794-OW8 require external 24V DC power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module requires an external 24V DC power source (125 mA) to energize the internal relay coils. It also draws 35 mA from the Flexbus to power the logic side of the interface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 9-position keyswitch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe keyswitch ensures that the 1794-OW8 only seats into a terminal base configured for its specific electrical profile. This mechanical interlock prevents accidental insertion of the wrong module type, protecting your field wiring and hardware from voltage mismatches.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I ensure the \"Brand New\" condition of the unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee every 1794-OW8 arrives in its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoriginal Allen-Bradley factory box with intact security seals\u003c\/strong\u003e. Every unit carries a unique GTIN (10662468112298) for traceability, ensuring the hardware has never experienced previous electrical cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53197380354232,"sku":"1794-OW8","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1794-OW81.jpg?v=1774946055","url":"https:\/\/www.globalpetroparts.com\/products\/1794-ow8-allen-bradley-flex-i-o-8-channel-isolated-relay-output-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}