Allen-Bradley 1756-L73 ControlLogix 8 MB Controller

Description 

The Allen-Bradley 1756-L73 is a ControlLogix 5570 programmable automation controller (PAC) with 8 MB user memory and 0.98 MB I/O memory. It is designed for medium-to-large automation applications, offering high-speed processing, motion control, and flexible communication. This controller is widely used in process industries, manufacturing, and high-availability systems requiring reliability and scalability.

Technical Specifications 

Information About 1756-L73

The 1756-L73 belongs to the ControlLogix 5570 series of controllers from Allen-Bradley, developed to deliver robust control performance and integrated communications. With capacity for 32 controller tasks and 100 programs per task, it provides the processing power needed for complex applications. The unit supports up to 128,000 digital I/O points and 4000 analog I/O points, ensuring compatibility with both local and distributed architectures. Communication flexibility is a key feature, with built-in support for Ethernet/IP, ControlNet, DeviceNet, Synchlink, DH+, RIO, and third-party networks. Integrated motion is supported through SERCOS interface, analog sensors, and Ethernet/IP motion control. It offers up to 500 controller connections, making it suitable for interconnected systems. Equipped with 8 MB of user memory, USB 2.0 port for programming (up to 12 Mbps), and energy storage technology (no battery required), the 1756-L73 is designed for convenience and reduced maintenance. With a compact one-slot footprint, 2.5 W power dissipation, and rugged environmental ratings (0–60 °C, 5–95% non-condensing humidity, 30 g operating shock), it ensures reliable operation in demanding automation environments.

Key Features:

• Design: Compact, one-slot ControlLogix PAC with 8 MB user memory and 0.98 MB I/O memory.
• Performance: Handles 32 tasks and up to 100 programs per task; supports 500 controller connections.
• Connectivity: Supports Ethernet/IP, ControlNet, DeviceNet, Synchlink, DH+, RIO, and third-party protocols.
• Motion Integration: Compatible with SERCOS, Ethernet/IP motion, and analog motion sensors.
• Programming: USB 2.0 interface with multiple IEC 61131-3 languages (ladder, FBD, ST, SFC).
• Energy Storage: Built-in energy storage eliminates the need for backup batteries.
• Environmental Ratings: Operates at 0–60 °C with vibration up to 2 g and 30 g operating shock.
• Compatibility: Fully integrates with ControlLogix chassis and modules across the Logix platform.

The 1756-L73 delivers the reliability, performance, and scalability required for modern industrial automation and high-availability control applications.

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.