Description:

The Allen-Bradley 1756-A4 ControlLogix Chassis is a modular rack designed to house ControlLogix controllers, communication modules, and I/O modules within industrial automation systems. Featuring four available module slots, this chassis provides the backplane infrastructure required for high-speed communication and power distribution between installed ControlLogix modules. Maintenance teams, OEM machine builders, and system integrators use this chassis for building compact PLC systems, expanding automation architectures, and replacing existing ControlLogix racks in industrial control environments.

Applications:

The Allen-Bradley 1756-A4 chassis is commonly used in industrial automation systems that require compact PLC architectures and reliable module integration. Typical installations include machine control panels, packaging equipment, conveyor systems, material handling machinery, and process control systems where multiple controllers, communication modules, and I/O modules must operate within a single ControlLogix platform. Its modular design allows flexible system expansion and efficient integration into modern automation networks.

Technical Specifications:

• Manufacturer: Allen-Bradley
• Part Number: 1756-A4
• Series: ControlLogix
• Chassis Type: Modular PLC chassis
• Number of Slots: 4 module slots
• Backplane Type: ControlLogix high-speed backplane
• Compatible Modules: ControlLogix controllers, I/O modules, and communication modules
• Mounting Type: Panel mount
• Power Supply: Requires external ControlLogix power supply module
• Operating Temperature: 0°C to 60°C
• System Compatibility: ControlLogix automation platform

Common Replacements:

• Allen-Bradley 1756-A7
• Allen-Bradley 1756-A10
• Allen-Bradley 1756-A13