{"product_id":"allen-bradley-1769-l31-compactlogix-controller-512kb","title":"Allen-Bradley 1769-L31 CompactLogix Controller 512KB","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1769-L31 CompactLogix Programmable Automation Controller\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications and Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1769-L31\u003c\/strong\u003e controller features 512 kilobytes of user memory, providing sufficient space for medium-complexity control programs. This memory capacity supports efficient data handling and logic execution for various automation tasks, ensuring smooth operational flow.\u003c\/li\u003e\n\u003cli\u003eThis CompactLogix model includes \u003cstrong\u003etwo (2) RS232 communication ports\u003c\/strong\u003e for versatile connectivity. Channel 0 is a fully isolated port supporting DF1, DH-485, and ASCII protocols, while Channel 1 is a non-isolated port supporting DF1 and DH-485 protocols.\u003c\/li\u003e\n\u003cli\u003eBoth communication channels on the \u003cstrong\u003e1769-L31\u003c\/strong\u003e support transmission speeds up to 38.4 kbps. This allows for reliable data exchange with operator interfaces, drives, and other serial devices, making it a central communication hub in your control system.\u003c\/li\u003e\n\u003cli\u003eThe controller supports a maximum of \u003cstrong\u003efour (4) tasks\u003c\/strong\u003e, allowing users to prioritize and organize different sections of their application code effectively. This feature enhances program structure and execution efficiency for complex machinery.\u003c\/li\u003e\n\u003cli\u003eFor environmental tolerance, the \u003cstrong\u003e1769-L31\u003c\/strong\u003e operates reliably in temperatures ranging from \u003cspan style=\"color: #cc3300;\"\u003e0° to +60°C (+32° to +140°F)\u003c\/span\u003e. It also withstands vibration from 10 to 500 Hz at 5G, ensuring stable performance in demanding industrial floor conditions.\u003c\/li\u003e\n\u003cli\u003eThis PAC provides robust \u003cstrong\u003eI\/O forcing\u003c\/strong\u003e capabilities for rapid engineering and commissioning. Technicians can easily override inputs or outputs during testing and troubleshooting, significantly reducing system startup time.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e1769-L31\u003c\/strong\u003e requires \u003cspan style=\"color: #cc3300;\"\u003e330mA at 5V DC and 40mA at 24V DC\u003c\/span\u003e from the system power supply. This current draw is a key consideration when designing your power budget for the CompactLogix chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSystem Expansion and I\/O Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUsers can install up to \u003cstrong\u003esixteen (16) local I\/O modules\u003c\/strong\u003e directly onto the same DIN rail as the \u003cstrong\u003e1769-L31\u003c\/strong\u003e. This allows for significant signal aggregation in a single, compact panel location.\u003c\/li\u003e\n\u003cli\u003eFor larger applications, the system supports expansion up to \u003cstrong\u003ethree (3) banks of I\/O modules\u003c\/strong\u003e. This flexibility lets you scale the system by adding remote banks to accommodate more field devices without changing the main controller.\u003c\/li\u003e\n\u003cli\u003eProper installation requires the \u003cstrong\u003e1769-L31\u003c\/strong\u003e to be the leftmost module in the system. It must also reside within \u003cspan style=\"color: #cc3300;\"\u003efour (4) modules of the system power supply\u003c\/span\u003e to meet the power supply distance rating and ensure stable operation.\u003c\/li\u003e\n\u003cli\u003eInstallation methods include DIN-rail mounting or direct panel mounting, offering flexibility for different enclosure designs. The controller has an open-style enclosure rating (IP20), meaning it requires installation inside a protective cabinet.\u003c\/li\u003e\n\u003cli\u003eThe controller uses copper wiring rated for 90 degrees Celsius with a wire size of \u003cspan style=\"color: #cc3300;\"\u003e22-14 AWG (solid)\u003c\/span\u003e. These specifications ensure safe and reliable connections for all field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMemory, Backup, and Indicators\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProgram backup and non-volatile memory storage utilize the \u003cstrong\u003e1784-CF64 or 1784-CF128 Industrial CompactFlash card\u003c\/strong\u003e. This feature allows for easy program transfers and secure data retention without requiring a laptop on-site.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e1769-BA battery\u003c\/strong\u003e maintains the contents of user memory when the controller powers down. The \u003cspan style=\"color: #cc3300;\"\u003eBAT status LED\u003c\/span\u003e on the front panel provides a clear visual indication of battery health, alerting maintenance staff before data loss occurs.\u003c\/li\u003e\n\u003cli\u003eClear LED indicators on the front panel display real-time status. The \u003cstrong\u003e1769-L31\u003c\/strong\u003e includes \u003cspan style=\"color: #cc3300;\"\u003eRUN, FORCE, BAT, OK, I\/O, DHC0, and dedicated LEDs for Channel 0 and Channel 1\u003c\/span\u003e, enabling immediate diagnostic feedback.\u003c\/li\u003e\n\u003cli\u003eFor physical dimensions, the unit weighs approximately 2 lbs. and has shipping dimensions of \u003cspan style=\"color: #cc3300;\"\u003e8 x 8 x 5 inches\u003c\/span\u003e. This compact size facilitates easy handling and integration into crowded electrical panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs the Allen-Bradley 1769-L31 a new original product?\u003c\/strong\u003e\u003cbr\u003eYes, we supply the \u003cstrong\u003e1769-L31\u003c\/strong\u003e as a brand new, original Allen-Bradley unit, sourced directly from reliable channels to ensure authenticity and quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat battery does the 1769-L31 use?\u003c\/strong\u003e\u003cbr\u003eThis controller uses the \u003cstrong\u003e1769-BA\u003c\/strong\u003e battery. It is a replaceable unit that preserves the program in user memory, and the controller's BAT LED will indicate when replacement is necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many I\/O modules can I connect to the 1769-L31?\u003c\/strong\u003e\u003cbr\u003eYou can connect up to 16 local I\/O modules. For further expansion, you can extend the system using up to 3 banks of I\/O modules for additional capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat are the communication protocol options for this controller?\u003c\/strong\u003e\u003cbr\u003eChannel 0 supports DF1, DH-485, and ASCII. Channel 1 supports DF1 and DH-485. Both are RS232 serial ports, with Channel 0 being fully isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo you have the 1769-L31 in stock, and how fast can you ship it?\u003c\/strong\u003e\u003cbr\u003eYes, we currently have stock available for the \u003cstrong\u003e1769-L31\u003c\/strong\u003e. We process and dispatch orders within 5 days, using trusted carriers like FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the return policy for this CompactLogix controller?\u003c\/strong\u003e\u003cbr\u003eWe offer a 30-day return window for this item, provided it is in its original condition and packaging, giving you peace of mind with your purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information Inquiries:\u003c\/strong\u003e \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e , \u003ca rel=\"noopener\" href=\"https:\/\/wa.me\/8615392429628\" target=\"_blank\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003ePartner \u003cstrong\u003eNexAuto Technology Limited\u003c\/strong\u003e : \u003ca rel=\"noopener\" href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45754917585057,"sku":"1769-L31","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/1769-L31.jpg?v=1771922015","url":"https:\/\/www.autonexcontrol.com\/uk\/products\/allen-bradley-1769-l31-compactlogix-controller-512kb","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}