Allen-Bradley 1756-A4 – ControlLogix chassis

The Allen-Bradley 1756-A4 is a 4-slot chassis designed for the ControlLogix automation platform. It provides the physical mounting structure and backplane communication for ControlLogix processors, communication modules and I/O modules used in industrial automation systems.

The chassis distributes power and enables high-speed communication between installed modules through the ControlLogix backplane. Its compact design makes it suitable for smaller automation systems while maintaining the flexibility and performance of the ControlLogix architecture.

Technical overview:
• Product type: PLC chassis
• Series: ControlLogix
• Model: 1756-A4
• Number of slots: 4 module slots
• Backplane communication: high-speed ControlLogix backplane bus
• Compatible modules: ControlLogix processors, I/O modules and communication modules
• Power supply: requires ControlLogix power supply module (e.g. 1756-PA / PB series)
• Mounting: panel or DIN rail mounting
• Operating temperature: approx. 0°C to +60°C
• Designed for industrial environments

Typical applications:
• PLC automation control systems
• Industrial production lines
• Machine control systems
• Process automation installations
• Distributed industrial control systems

About the manufacturer:
Allen-Bradley, a brand of Rockwell Automation, is one of the world’s leading manufacturers of industrial automation equipment. The company develops PLC platforms, motion control systems, industrial communication networks and integrated automation technologies widely used across manufacturing industries.