Product Details
Product Overview
The Allen-Bradley 1769-L35CR functions as a high-performance controller within the CompactLogix 5335 family, specifically engineered for applications requiring robust ControlNet networking. This processor manages complex automation tasks with 1.5 MB of user memory and supports up to 30 local 1769 I/O modules. We supply this unit as 100% Brand New original factory stock. It provides a reliable solution for scheduled, deterministic data transfer, making it ideal for synchronized machine control and distributed I/O across large-scale industrial facilities.
Technical Specifications
| Feature | Specification |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Line | CompactLogix L3x Series |
| User Memory | 1.5 Megabytes |
| Communication Ports | 1 ControlNet (BNC); 1 RS-232 (9-pin D-shell) |
| Max Local I/O Modules | 30 Modules |
| I/O Bank Support | Up to 3 Banks |
| Power Supply Distance | 4 Modules (Max distance from power supply) |
| Battery Replacement | 1769-BA |
| Programming Software | RSLogix 5000 / Studio 5000 |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Weight | 0.64 lbs (0.29 kg) |
Engineering Advantages
-
Deterministic ControlNet Integration: The integrated ControlNet port enables scheduled, high-speed data transfers. This ensures that critical I/O updates and interlocking signals arrive with microsecond precision, preventing the "jitter" often associated with standard unscheduled Ethernet traffic.
-
Large Memory Capacity: With 1.5 MB of non-volatile memory, the 1769-L35CR handles extensive ladder logic, structured text, and complex data arrays. This capacity supports detailed diagnostic routines and recipe management directly on the controller.
-
Dual-Channel Flexibility: The processor includes an isolated RS-232 port alongside the ControlNet interface. This allows engineers to maintain a local HMI connection or a legacy DF1/Modbus link without sacrificing the primary high-speed network bandwidth.
-
Scalable Hardware Footprint: The module supports up to 30 local 1769 I/O modules across three expansion banks. This high-density capability allows for massive I/O concentration within a single CompactLogix rack, reducing the need for multiple remote nodes.
-
Rugged 1769 Backplane Interface: The 1769-L35CR utilizes the time-tested "tongue-and-groove" interlocking system. This mechanical design ensures a vibration-resistant connection between the CPU and I/O modules, maintaining bus integrity in heavy-duty manufacturing environments.
FAQs
-
What is the difference between the 1769-L35E and the 1769-L35CR?
The "E" version features an EtherNet/IP port, while the "CR" version provides a ControlNet port. Use the 1769-L35CR if your facility standardizes on ControlNet for deterministic I/O and peer-to-peer messaging.
-
How many I/O modules can I place next to the CPU?
The 1769-L35CR has a power supply distance rating of 4. You must place the controller within four slots of a 1769-series power supply (e.g., 1769-PA2 or PB4) to ensure proper current distribution.
-
Does this controller support online editing?
Yes. When using RSLogix 5000 or Studio 5000 software, the 1769-L35CR supports full online programming and tag editing, allowing you to modify logic without stopping the production process.
-
Is the 1769-BA battery included?
The 1769-L35CR requires a 1769-BA battery for memory retention during power-off states. While we supply the hardware as 100% Brand New, we recommend checking the battery date code or installing a fresh 1769-BA during the commissioning phase to ensure maximum backup life.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Navigating Industrial Automation Failures: Types, Causes, and Mitigation Strategies
Modern manufacturing relies heavily on automated control systems to maximize throughput and maintain product quality. However, unplanned downtime in industrial automation can cost facility operators thousands of dollars per hour. Understanding how programmable logic controllers (PLCs), distributed control systems (DCS), and field instrumentation fail empowers engineering teams to implement robust preventive maintenance strategies.
Essential Motion Control Commands: A Practical Guide for Engineers
Automation engineers often rely on precise position and speed control to drive modern factory machinery. Modern industrial systems, such as Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), depend heavily on standardized motion instructions. Mastering these commands ensures operational safety, protects mechanical components, and optimizes cycle times across production lines.
The Role of Intrinsic Safety Barriers in PLC and DCS Architectures
Implementing robust protection in hazardous industrial environments represents a fundamental safety requirement in factory automation. Process facilities often handle volatile gases, dusts, and chemical agents that pose significant combustion risks. Consequently, control system engineers must deploy energy-limiting interfaces to isolate safe-area control cabinets from hazardous-area field instrumentation. This article examines the function, selection, and electrical principles of intrinsic safety barriers within modern PLC and DCS networks.