Product Overview

The Allen-Bradley 1756-L73 is a high-performance ControlLogix 5570 series processor designed for complex, data-intensive industrial automation environments. This controller provides a robust solution for discrete, motion, process, and safety control applications. By utilizing a common control engine and a multi-discipline development environment, the 1756-L73 streamlines engineering efficiency and enhances system interoperability.

One of the primary advantages of this unit is its high-speed backplane communication and integrated motion capabilities. It is engineered to handle demanding computational tasks while maintaining synchronization across distributed I/O and motion axes. The lack of a battery requirement—utilizing an energy storage module instead—minimizes maintenance overhead and increases long-term reliability in critical infrastructure.

Technical Specifications

• User Memory: 8 MB

• I/O Memory: 0.98 MB

• Optional Non-Volatile Memory: 1 GB (1784-SD1) or 2 GB (1784-SD2) Secure Digital Card

• Digital I/O Max: 128,000 signals

• Analog I/O Max: 4,000 signals

• Total I/O Max: 128,000 signals

• Communication Ports: Built-in USB 2.0 port (programming and configuration)

• Supported Networks: EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink

• Controller Tasks: 32 tasks (1000 programs per task)

• Current Draw: 800mA @ 5.1V DC; 5mA @ 1.2V DC

• Power Dissipation: 2.5 W

• Weight: 0.25 kg (approx. 0.9 kg shipping weight)

• Size: 3.5x13x14.5cm
  

Operational Capabilities

The 1756-L73 serves as a central intelligence hub for the ControlLogix platform. It supports full controller redundancy, ensuring high availability for mission-critical processes. The module is capable of managing up to 100 axes of integrated motion, making it suitable for sophisticated packaging, assembly, and material handling systems.

Communication is facilitated through separate bridge modules, allowing the processor to scale across various topologies. It supports full CIP (Common Industrial Protocol) safety and security standards, providing a secure data layer across the enterprise. Its physical construction is designed to withstand industrial vibration and thermal fluctuations typical of factory floor environments.