{"product_id":"allen-bradley-1746-ow8-output-module","title":"Allen-Bradley 1746-OW8 SLC 500 Relay Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1746-OW8 is a high-performance discrete output module designed for the SLC 500 programmable logic controller system. This module features eight (8) normally open (N.O.) electromechanical relay contacts, providing robust \"dry contact\" switching capabilities. By utilizing mechanical relays, the 1746-OW8 allows for the control of both AC and DC loads within a single module, making it an essential interface component for applications requiring the integration of disparate voltage levels, such as 120V AC motor starters and 24V DC pilot lights.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEight (8) normally open (N.O.) relay output points.\u003c\/li\u003e\n\u003cli\u003eOrganized into two (2) isolated groups of four outputs each, allowing for independent power source selection per group.\u003c\/li\u003e\n\u003cli\u003eZero off-state leakage current, ideal for high-impedance loads sensitive to leakage.\u003c\/li\u003e\n\u003cli\u003eCompatible with a wide range of AC and DC operating voltages.\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration into the SLC 500 chassis backplane.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is widely utilized in industrial automation environments for interfacing the SLC 500 controller with field devices. Common applications include controlling motor starters, solenoid valves, contactors, and indicating lamps where galvanic isolation or the ability to switch mixed voltage types is required.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\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\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Relay Output (Normally Open)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 (2 groups of 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage (AC)\u003c\/td\u003e\n\u003ctd\u003e5 to 265V AC (47 to 63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage (DC)\u003c\/td\u003e\n\u003ctd\u003e5 to 125V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V DC)\u003c\/td\u003e\n\u003ctd\u003e85 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V DC)\u003c\/td\u003e\n\u003ctd\u003e90 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay (On\/Off)\u003c\/td\u003e\n\u003ctd\u003e10.0 ms (max resistive load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Heat Dissipation\u003c\/td\u003e\n\u003ctd\u003e3.7 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Dissipation per Point\u003c\/td\u003e\n\u003ctd\u003e0.138 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the SLC 500 system power is disconnected before inserting or removing the module from the chassis.\u003c\/li\u003e\n\u003cli\u003eThe module should be seated firmly into the chassis slot to ensure proper backplane connection.\u003c\/li\u003e\n\u003cli\u003eUse appropriate wire gauges and ensure all terminal screws are tightened to the specified torque to prevent loose connections.\u003c\/li\u003e\n\u003cli\u003eMaintain proper cable routing to minimize electromagnetic interference (EMI) from high-voltage lines.\u003c\/li\u003e\n\u003cli\u003eEnsure the environment is within the specified temperature and humidity ratings for the SLC 500 system.\u003c\/li\u003e\n\u003cli\u003eHandle with care to prevent electrostatic discharge (ESD) damage to the module circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eDoes the 1746-OW8 allow for mixing AC and DC loads?\u003c\/h3\u003e\u003cp\u003eYes, because the module is organized into two isolated groups of four outputs, you can connect different voltage sources to each group, allowing for the simultaneous control of AC and DC loads.\u003c\/p\u003e\u003ch3\u003eIs there any leakage current with this module?\u003c\/h3\u003e\u003cp\u003eNo, the 1746-OW8 uses electromechanical relays, which provide a physical air gap when open, resulting in zero off-state leakage current.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50739871842556,"sku":"1746-OW8","price":78.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_0f5f2fea-abb7-45c6-8b4d-9985d7fc0208.jpg?v=1785397207","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-1746-ow8-output-module","provider":"Electronic PLC","version":"1.0","type":"link"}