Allen-Bradley

Allen-Bradley 1756-L74 ControlLogix 16 MB Controller

SKU 1756-L74

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: Allen-Bradley

  • Product No.: 1756-L74

  • Country of origin:United States

  • Product Type: ControlLogix 16 MB Controller

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 350g

  • Dimensions: 3.5 x 14.5 x 14.5 cm (W x H x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Allen-Bradley 1756-L74 is a ControlLogix programmable automation controller designed for demanding industrial automation and process control applications. Installed in a ControlLogix chassis, the 1756-L74 manages system I/O modules across the backplane and over network links to provide real-time control, high-speed data processing, and integrated motion capabilities. Featuring 16 MB of user memory and 0.98 MB of dedicated I/O memory, the module offers flexible programming options and communication interfaces for factory automation, process systems, and heavy industrial machinery.

Features

  • 16 MB user memory and 0.98 MB I/O memory
  • Integrated 1-port USB local programming interface
  • Support for non-volatile storage via Secure Digital (SD) card
  • Uses 1756-ESMCAP energy storage capacitor module
  • Low power consumption at 5 mA @ 1.2V DC and 800 mA @ 5.1V DC

Applications

  • Factory automation and assembly lines
  • Industrial process control systems
  • Motion and drive control architectures
  • Distributed I/O systems and plant-wide control networks

Technical Specifications

Parameter Value
Manufacturer Allen-Bradley / Rockwell Automation
Catalog Number 1756-L74
UPC 612598876044
User Memory 16 MB
I/O Memory 0.98 MB
Local Programming Port 1 USB
Embedded Network Port False
Non-Volatile Memory Option Secure Digital
Replacement Energy Storage 1756-ESMCAP
Current Draw @ 1.2V DC 5 mA
Current Draw @ 5.1V DC 800 mA

Installation Guidelines

  • Chassis Mounting: Ensure the controller is fully seated into any available slot of a compatible ControlLogix chassis before applying power.
  • Energy Storage Module: Install the required 1756-ESMCAP energy storage capacitor module to maintain memory backup functionality without traditional batteries.
  • Local USB Port Connection: The front panel USB port is provided for temporary local programming, configuration, and firmware updates only.
  • Grounding & Power: Verify that the chassis and power supply are properly grounded according to standard industrial wiring and grounding guidelines to mitigate EMI/RFI noise.

FAQ

What is the memory capacity of the module?
The device features 16 MB of user memory and 0.98 MB of I/O memory.

What local programming port is available on the controller?
The device includes 1 USB port designed for temporary local programming and configuration.

What energy storage option is used as a replacement battery?
The controller uses the 1756-ESMCAP capacitor module for energy storage.

Does the device have an embedded network port?
No, the device does not feature an embedded network port.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1756-L74 ControlLogix 16 MB Controller

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1756-L74
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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 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

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