Description

Product Description

The Allen-Bradley 1756-L61 serves as a high-performance central processing unit within the ControlLogix 5561 hardware family. This module executes complex control logic for industrial automation, bridging the gap between high-speed discrete operations and sophisticated process management. By utilizing a scalable architecture, the processor allows engineers to design systems that range from localized machine control to expansive, plant-wide distributed architectures.

Reliability remains a cornerstone of the 1756-L61 design. The module incorporates a 2 MB user memory capacity to store extensive application code and data tables. Furthermore, it features a built-in battery backup system that safeguards critical volatile memory during power disruptions. Because industrial uptime is paramount, the controller supports a wide array of communication interfaces—including EtherNet/IP, ControlNet, and DeviceNet—enabling seamless data exchange across diverse network topologies.

Installation occurs within any standard 1756 ControlLogix chassis, where the processor occupies a single slot. Its multitasking operating system efficiently prioritizes tasks, ensuring that time-critical safety and motion functions receive the necessary computational resources without delay. Consequently, the 1756-L61 remains a preferred choice for professionals looking to enhance system diagnostics and maintain long-term operational stability in rigorous manufacturing environments.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model Designation: 1756-L61
• Controller Revision: Logix5561
• User Memory: 2 MB
• I/O Memory: 478 KB
• Communication Support: EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O
• Chassis Compatibility: Any 1756 ControlLogix Chassis
• Current Draw: 1.2A @ 5.1V DC; 14mA @ 24V DC
• Power Dissipation: 3.5 Watts
• Operational Temperature: 0 to 60 °C (32 to 140 °F)
• Dimensions: 3.5 x 14 x 14.5 cm
• Weight: 0.4 kg