Allen-Bradley | 1756-L72 | ControlLogix 5570

Product Description: Allen-Bradley 1756-L72

The Allen-Bradley 1756-L72 is a high-performance programmable automation controller from the ControlLogix 5570 series. With 4 MB of user memory, it is suitable for mid- to large-scale control systems requiring discrete, process, motion, and safety integration. It operates within the 1756 chassis platform and supports modular configuration, providing flexibility for scalable industrial control. The controller is programmed using Studio 5000 Logix Designer software.

Key Features

• 4 MB user memory for logic and data
• Up to 250 controller connections
• Built-in USB programming port
• Supports redundancy, motion, and safety control
• Slot for nonvolatile SD memory card
• High-speed task execution for real-time performance
• Supports add-on instructions and user-defined data types
• Compatible with ControlLogix I/O and communication modules
• Requires 1756 chassis and power supply

Technical Specifications

• User Memory: 4 MB
• Communication Ports: 1 x USB (device); additional via separate communication modules (EtherNet/IP, ControlNet, etc.)
• Controller Connections: Up to 250
• SD Memory Slot: Supports 1784-SD1 (1 GB) or 1784-SD2 (2 GB)
• Input Power: Supplied via 1756 backplane
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Relative Humidity: 5% to 95% non-condensing
• Dimensions (H x W x D): Approx. 145 mm x 35 mm x 140 mm
• Certifications: UL, CE, CSA, ATEX, IECEx, Class I Div 2

Application Areas

• Factory automation and process control
• Machine control systems
• Oil and gas processing
• Material handling and packaging
• Power and energy systems
• Water and wastewater treatment plants

Advantages

• Delivers reliable and deterministic control in demanding applications
• Supports multi-discipline control including discrete, motion, and process
• High-speed communication and task scheduling
• Easy to expand and maintain within ControlLogix platform
• Long-term investment protection through scalable architecture