Allen-Bradley 1769-L31 CompactLogix Controller 512KB

Allen-Bradley 1769-L31 CompactLogix Programmable Automation Controller

Core Technical Specifications and Performance

• The 1769-L31 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.
• This CompactLogix model includes two (2) RS232 communication ports 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.
• Both communication channels on the 1769-L31 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.
• The controller supports a maximum of four (4) tasks, allowing users to prioritize and organize different sections of their application code effectively. This feature enhances program structure and execution efficiency for complex machinery.
• For environmental tolerance, the 1769-L31 operates reliably in temperatures ranging from 0° to +60°C (+32° to +140°F). It also withstands vibration from 10 to 500 Hz at 5G, ensuring stable performance in demanding industrial floor conditions.
• This PAC provides robust I/O forcing capabilities for rapid engineering and commissioning. Technicians can easily override inputs or outputs during testing and troubleshooting, significantly reducing system startup time.
• The 1769-L31 requires 330mA at 5V DC and 40mA at 24V DC from the system power supply. This current draw is a key consideration when designing your power budget for the CompactLogix chassis.

System Expansion and I/O Capabilities

• Users can install up to sixteen (16) local I/O modules directly onto the same DIN rail as the 1769-L31. This allows for significant signal aggregation in a single, compact panel location.
• For larger applications, the system supports expansion up to three (3) banks of I/O modules. This flexibility lets you scale the system by adding remote banks to accommodate more field devices without changing the main controller.
• Proper installation requires the 1769-L31 to be the leftmost module in the system. It must also reside within four (4) modules of the system power supply to meet the power supply distance rating and ensure stable operation.
• Installation 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.
• The controller uses copper wiring rated for 90 degrees Celsius with a wire size of 22-14 AWG (solid). These specifications ensure safe and reliable connections for all field wiring.

Memory, Backup, and Indicators

• Program backup and non-volatile memory storage utilize the 1784-CF64 or 1784-CF128 Industrial CompactFlash card. This feature allows for easy program transfers and secure data retention without requiring a laptop on-site.
• The 1769-BA battery maintains the contents of user memory when the controller powers down. The BAT status LED on the front panel provides a clear visual indication of battery health, alerting maintenance staff before data loss occurs.
• Clear LED indicators on the front panel display real-time status. The 1769-L31 includes RUN, FORCE, BAT, OK, I/O, DHC0, and dedicated LEDs for Channel 0 and Channel 1, enabling immediate diagnostic feedback.
• For physical dimensions, the unit weighs approximately 2 lbs. and has shipping dimensions of 8 x 8 x 5 inches. This compact size facilitates easy handling and integration into crowded electrical panels.

Frequently Asked Questions (FAQ)

• Is the Allen-Bradley 1769-L31 a new original product?
  Yes, we supply the 1769-L31 as a brand new, original Allen-Bradley unit, sourced directly from reliable channels to ensure authenticity and quality.
• What battery does the 1769-L31 use?
  This controller uses the 1769-BA 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.
• How many I/O modules can I connect to the 1769-L31?
  You 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.
• What are the communication protocol options for this controller?
  Channel 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.
• Do you have the 1769-L31 in stock, and how fast can you ship it?
  Yes, we currently have stock available for the 1769-L31. We process and dispatch orders within 5 days, using trusted carriers like FedEx, UPS, and DHL.
• What is the return policy for this CompactLogix controller?
  We 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.

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

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