{"product_id":"1769-ob8-compactlogix-digital-dc-output-module-by-allen-bradley","title":"1769-OB8 CompactLogix Digital DC Output Module by Allen-Bradley","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1769-OB8\u003c\/strong\u003e is an 8-channel solid-state 24V DC digital sourcing output module designed specifically for the Allen-Bradley CompactLogix and MicroLogix expansion ecosystem. Engineered to handle high-current inductive loads, this module delivers reliable switching performance across compact automation panels. Automation professionals depend on the \u003cstrong\u003e1769-OB8\u003c\/strong\u003e for its robust surge handling, flexible expansion compatibility via local racks or communication adapters, and dependable performance in rigorous industrial environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Allen-Bradley \/ Rockwell Automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1769-compactlogix\"\u003eCompactLogix\u003c\/a\u003e \/ Compact I\/O (Series A and B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e \u003cstrong\u003e1769-OB8\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e 8-Point Digital DC Sourcing Output Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage Range:\u003c\/strong\u003e 20.4 to 26.4 VDC (24 VDC nominal source)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Channels:\u003c\/strong\u003e 8 points total, divided into two (2) groups of 4 points each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Current Rating:\u003c\/strong\u003e 4 Amps for 10 ms (repeatable every 2 seconds per output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current Draw:\u003c\/strong\u003e 145 mA at 5.1 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Size Compatibility:\u003c\/strong\u003e 22 to 16 AWG stranded copper wiring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Accessories:\u003c\/strong\u003e 1769-RTBN18 terminal block and 1769-RD replacement door\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Mounting:\u003c\/strong\u003e DIN rail or direct panel mount installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Integration Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Assembly:\u003c\/strong\u003e Mount the \u003cstrong\u003e1769-OB8\u003c\/strong\u003e securely onto a standard DIN rail or backplane panel. Lock adjacent bus connectors tightly together to guarantee clean electrical communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Flexibility:\u003c\/strong\u003e Compatible with CompactLogix controllers, MicroLogix expansion assemblies, or distributed nodes utilizing EtherNet (1769-AENTR) and DeviceNet adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Termination:\u003c\/strong\u003e Connect field load lines using 22 to 16 AWG stranded wire terminated neatly into the 1769-RTBN18 removable terminal block housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Ease\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration States:\u003c\/strong\u003e Program read\/writable configuration data to maintain user-defined conditions or safe last-state behaviors during controller mode transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Data Echo:\u003c\/strong\u003e Utilize the controller input data file to monitor output data echo status, ensuring software-commanded states match system logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Upkeep:\u003c\/strong\u003e Replace damaged doors or terminal blocks easily using designated replacement part kits (1769-RD and 1769-RTBN18) without rewiring the entire panel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eController Compatibility:\u003c\/strong\u003e Fully compatible with Allen-Bradley CompactLogix controllers and modular expansion backplanes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Standards:\u003c\/strong\u003e Built to meet strict Rockwell Automation electrical and mechanical performance standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePacking List \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacking List:\u003c\/strong\u003e One (1) \u003cstrong\u003e1769-OB8\u003c\/strong\u003e DC Output Module, 1769-RTBN18 terminal block, protective casing, and documentation sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e Protected by a comprehensive 12-month warranty covering structural integrity and functional performance from the date of purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCourier Network:\u003c\/strong\u003e Secure, expedited international delivery managed through premier global carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Window:\u003c\/strong\u003e Orders are verified, securely packaged, and dispatched within 24-48 hours to minimize unexpected plant downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Application Scenes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscrete Manufacturing:\u003c\/strong\u003e Driving high-current solenoid valves, small DC motors, and indicator stack lights on automated assembly lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Handling Systems:\u003c\/strong\u003e Switching high-frequency pneumatic actuators and sorting gates on high-speed conveyor networks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Machine Skids:\u003c\/strong\u003e Consolidating digital output control within compact, space-constrained CompactLogix control cabinets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight \u0026amp; Field Experience\u003c\/h3\u003e\n\u003cp\u003eWhen driving heavy inductive loads with solid-state source modules like the \u003cstrong\u003e1769-OB8\u003c\/strong\u003e, back-EMF spikes can cause premature output transistor degradation if proper suppression is omitted. Based on field installation experience, our engineering team strongly recommends installing flyback diodes across DC inductive loads (such as relay coils and solenoids) and respecting the 4A surge current timing window to prevent thermal overloads during repetitive high-frequency switching cycles.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the input data file of the 1769-OB8 reflect the physical electrical state of the output terminals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the module's input data file reflects the output data echo (what the controller commands) rather than detecting open or shorted field wiring conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow are the 8 output channels grouped on this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 8 output points are arranged into two (2) distinct groups of 4 points each, allowing for independent power common grouping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used for expansion with MicroLogix controllers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 1769-OB8 can be deployed as an expansion I\/O module in MicroLogix controller assemblies utilizing compatible 1769 communication and bus interfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat wire sizes are recommended for the terminal block connections?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eField wiring should utilize stranded copper wire sized between 22 AWG and 16 AWG to ensure secure clamping inside the 1769-RTBN18 terminal block.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat key criteria should I evaluate when replacing a CompactLogix output card?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVerify your controller platform series, voltage requirements (24 VDC sourcing), total point count (8 points), and backplane current consumption limits before ordering.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013910028470,"sku":"1769-OB8","price":174.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1769-OB8_93e3b4df-f682-4eae-b4eb-ce6fa945249b.jpg?v=1786523348","url":"https:\/\/www.plcsparehub.com\/products\/1769-ob8-compactlogix-digital-dc-output-module-by-allen-bradley","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}