1756-L55M24 Allen-Bradley ControlLogix Controller Module

Product Summary

The Allen-Bradley 1756-L55M24 is a high-performance ControlLogix processor designed for demanding industrial automation tasks. It provides flexible, scalable control for complex manufacturing and process applications.

Technical Overview

The 1756-L55M24 serves as a central intelligence unit within the Allen-Bradley ControlLogix platform. This module manages diverse automation requirements, including discrete, motion, and drive control, while maintaining high-speed communication across the I/O bus. By utilizing a modular design, engineers integrate this controller into existing ControlLogix chassis architectures to streamline system assembly and simplify future expansion.

Key Performance Characteristics

• Memory Capacity: 3.5 MB non-volatile user memory
• Communication Interfaces: Integrated RS-232 serial port
• Supported Languages: Relay Ladder, Function Block, SFC, and Structured Text
• Power Requirements: 1.25 A at 5.1 V DC
• Thermal Dissipation: 5.7 W (19.4 BTU/hour)
• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Compatibility: Supports ControlNet, DeviceNet, and Ethernet modules

System Integration and Application

Automation professionals deploy the 1756-L55M24 in environments requiring precise process timing and reliable data handling. The controller supports hot-swapping within the chassis, which minimizes system downtime during maintenance. However, technicians must ensure power is removed in hazardous locations to maintain safety standards. The module offers versatile connectivity through various communication adapters, allowing for seamless data exchange with supervisory systems. Its robust construction ensures consistent operation in demanding industrial climates with up to 95% non-condensing humidity.