Allen-Bradley 1756-L73 ControlLogix 8 MB Controller

Description

The Allen-Bradley 1756-L73 is a ControlLogix 5570 programmable automation controller designed to deliver high-performance control and data processing for demanding industrial automation applications. Equipped with 8 MB of user memory and 0.98 MB of dedicated I/O memory, the 1756-L73 provides real-time control, high-speed data execution, and seamless integration across complex architectures. Featuring an integrated USB programming port and pre-installed Secure Digital (SD) non-volatile memory storage, it provides robust, flexible controller performance within the ControlLogix 1756 platform.

Features

• Provides 8 MB of user memory and 0.98 MB of dedicated I/O memory
• Supports up to 32 controller tasks with up to 1000 programs per task
• Includes 1 GB Secure Digital (SD) card (1784-SD1) for non-volatile memory storage
• Equipped with a USB 2.0 full-speed front port for local programming and configuration
• Utilizes capacitor-based energy storage modules (1756-ESMCAP) eliminating the need for lithium batteries
• Supports up to 128,000 digital I/O and 4,000 analog I/O points

Applications

• High-speed batch processing and discrete manufacturing control
• Plant-wide process control and complex motion management
• Water and wastewater treatment facility automation
• Oil, gas, and energy generation control systems
• Automated material handling and packaging machinery

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Turn off chassis power or verify area non-hazardous status before inserting or removing the module.
• Align the controller module with the top and bottom guides of any available chassis slot.
• Slide the module firmly into the slot until the top and bottom levers snap into position.
• Ensure the energy storage module (1756-ESMCAP) is securely seated in the controller unit.
• Connect the USB programming cable only for temporary local configuration and maintenance access.
• Maintain clear ventilation paths above and below the chassis to prevent thermal buildup.

Compliance and Certifications

• c-UL-us Listed Industrial Control Equipment (UL File E65584)
• UL Listed for Class I, Division 2 Group A, B, C, D Hazardous Locations (UL File E194810)
• CE Marked for European Union EMC Directives (EN 61326-1, EN 61000-6-2, EN 61000-6-4)
• RCM Australian Radiocommunications Compliance
• KC Korean Class A EMC Certification