Allen-Bradley 1756-L73 ControlLogix 8 MB Controller

SKU 1756-L73

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-L73
Country of origin:United States
Product Type: Programmable Controllers
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 350g
Dimensions: 35 x 145 x 140 mm (W x H x D)
Shipping port: Xiamen
Warranty: 12 months

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

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Model	1756-L73
Series	ControlLogix 5570 Controller
User Memory	8 MB
I/O Memory	0.98 MB
Non-Volatile Memory	1 GB Secure Digital (SD) card (1784-SD1)
Digital I/O Capacity	128,000 max
Analog I/O Capacity	4,000 max
Total I/O Capacity	128,000 max
Current Draw at 1.2V DC	5 mA
Current Draw at 5.1V DC	800 mA
Power Dissipation	2.5 W
Thermal Dissipation	8.5 BTU/hr
Operating Temperature	0 degC to 60 degC
Storage Temperature	-40 degC to 85 degC
Relative Humidity	5% to 95% noncondensing
USB Port	USB 2.0 full-speed (12 Mbps), Type B connector

Connections/Interfaces

Connector Pin	Function
USB Port	USB 2.0 full-speed programming/configuration port (Type B)
Backplane Interface	ControlLogix 1756 backplane connector

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

FAQ

What memory capacity does the controller provide?

The controller features 8 MB of user memory and 0.98 MB of dedicated I/O memory.

Does the device require a lithium battery for memory backup?

No, it utilizes a removable capacitor-based energy storage module (1756-ESMCAP) to eliminate battery maintenance.

What type of non-volatile memory is supplied with the unit?

It comes pre-installed with a 1 GB Secure Digital (SD) card (1784-SD1) for non-volatile storage.

What is the operating temperature range for this controller?

The recommended operating temperature range is 0 degC to 60 degC.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Allen-Bradley 1756-L73 ControlLogix 8 MB Controller

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30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	Black
Country of origin	United States
Power source	AC-powered