1769-L33ER Allen-Bradley CompactLogix Processor Module

Product Overview

The Allen-Bradley 1769-L33ER is a high-performance CompactLogix 5370 L3 controller designed to meet the growing demands of mid-range application scales. As a core processor module in the Integrated Architecture, it provides a scalable solution for motion, safety, and standard control. Featuring dual Ethernet/IP ports for linear and Device Level Ring (DLR) topologies, this controller enables seamless integration and high-speed communication across industrial networks.

Technical Configuration

• Manufacturer: Allen-Bradley / Rockwell Automation
• Model Series: CompactLogix 5370
• Module Type: Processor / Controller Module
• Communication Ports: 1 USB Port (Console); 2 Ethernet Ports (Integrated Switch)
• Network Support: EtherNet/IP (DLR, Linear, and Star Topologies)
• I/O Capacity: Supports up to 32 Local I/O Modules
• Expansion Capability: Up to 3 I/O Banks

Technical Specifications

Installation & Programming

1. Mounting and Power: The 1769-L33ER installs directly onto a standard DIN rail or can be panel-mounted. Ensure that the power supply distance rating is observed; the controller must be within 4 modules of the 1769 power supply to ensure voltage stability and peak performance of the internal 4.5 W dissipation circuit.

2. Network Topology: Utilize the dual Ethernet ports to create a Device Level Ring (DLR) for high availability. This allows the system to remain operational even if a single point in the network cable is severed. The USB port is intended solely for local programming, firmware updates, and configuration via Studio 5000 Logix Designer® software.

3. I/O Management: This processor supports a massive local I/O footprint of up to 32 modules across 3 banks. When expanding to multiple banks, use 1769-CRR1/CRR3 or 1769-CRL1/CRL3 expansion cables to maintain backplane communication integrity.

Engineering Advantages

The Allen-Bradley CompactLogix 5370 series brings the benefits of the Common Control Engine to a smaller form factor. The 1769-L33ER eliminates the need for a battery by utilizing internal non-volatile memory for storage, significantly reducing maintenance requirements. With the ability to manage 32 tasks and 100 programs per task, it offers the multitasking power usually reserved for larger ControlLogix systems, making it the premier choice for complex machine control and high-speed material handling.

Technical FAQs

Q1: Does the 1769-L33ER require a battery?
A1: No, the CompactLogix 5370 controllers use an internal energy storage module to write data to the onboard non-volatile memory during a power loss, eliminating the need for lithium batteries.

Q2: Can I use this controller for Integrated Motion on EtherNet/IP?
A2: Yes, the L33ER supports Integrated Motion on EtherNet/IP for up to 8 axes, providing a synchronized control solution for servo drives.

Q3: What software is required for configuration?
A3: You will need Studio 5000 Logix Designer® (formerly RSLogix 5000) software, typically Version 20 or higher, depending on your firmware revision.