Home / News / AB 1756-L61 Product Overview

AB 1756-L61 Product Overview

Dec 31, 2025 Allen‑Bradley

1756-L61 is a ControlLogix controller under the Allen-Bradley brand,produced by Rockwell Automation.The following is a detailed introduction to the 1756-L61 controller.

Allen‑Bradley 1756-L61

Basic attributes

Model:1756-L61.

Category:Processor module.

Brand:Allen-Bradley.

Manufacturer:Rockwell Automation.

Technical specifications

Memory

User memory:2MB(otherwise known as fixed memory 2,4 or 8MB,which may vary depending on different configurations).

I/O memory:478KB.

Optional non-volatile storage memory:128MB(using 1784-CF128 CompactFlash memory card).

Communication options

ControlNet.

Data Highway Plus.

EtherNet/IP.

DeviceNet.

SynchLink.

Remote I/O.

Third-party process and device networks.

Serial Communications

Built-in RS-232 serial communications port.

Supported protocols include DF1 full/half duplex,ASCII,DF1 radio modem,Modbus via logic,and DH-485.

I/O Capacity

Maximum digital I/O:128,000 points.

Maximum analog I/O:4,000 points.

Maximum total I/O:128,000 points.

Other Technical Specifications

Controller Tasks:Includes 32 tasks,100 programs per task,and event tasks(all event triggers).

Current Draw:1200mA at 5.1V DC,14mA at 24V DC.

Power Consumption:3.5W.

Heat Dissipation:11.9 BTU/hr.

Isolation Voltage:30V(continuous),tested at 720V DC for 60 seconds.

Operating Temperature:0 to 60 degrees Celsius.

Storage Temperature:-40 to 85 degrees Celsius.

Maximum ambient air temperature:60 degrees Celsius.

Relative humidity:5%to 95%(non-condensing).

Vibration:2g at 10 to 500 Hz.

Operating shock:30g.

Allen‑Bradley 1756-L61

Non-operating shock:50g.

III.Compatibility and Installation

Compatibility:The 1756-L61 controller is compatible with a variety of chassis,including 1756-A4,1756-A7,1756-A10,1756-A13 and 1756-A17.

Installation:The controller is a chassis-based controller and can be placed in any available slot of the 1756 ControlLogix chassis.

Application and Function

Application:The 1756-L61 controller is widely used in industrial automation control systems,such as petrochemical,power,metallurgy,pharmaceutical,food and other industries.

Function

Production line control:It can realize automatic control and monitoring of production lines and improve production efficiency.

Equipment monitoring:It can realize real-time monitoring and diagnosis of the operating status of the equipment,helping enterprises to maintain and service the equipment.

Data collection:It can realize the collection,analysis and storage of production data,providing decision-making support for enterprises.

Allen-Bradley 1756-L61S Processor Module
Allen-Bradley
Featured Product

Allen-Bradley 1756-L61S

Nov 23, 2025

The Allen Bradley 1756-L61S is a versatile processor module designed for both ControlLogix and GuardLogix systems. Part of Rockwell Automation’s renowned line of industrial automation components, it excels in reliability and perf

View Product Details
Buy-Globally

Buy-Globally

Contact Us for Inquiries & Needs

24/7 Online Support

If you have any questions or needs, please feel free to leave a message. Our customer service is online 24 hours a day, and we look forward to serving you.

Quick Response
Expert Advice
Global Support
24/7 Available

Leave a Comment

If you have any questions or needs, please feel free to leave a message
Our customer service is online 24 hours a day, and we look forward to serving you.
  • All comments(0
  • There are no comments yet. Come and post a comment!

Related Articles

MODICON 140CRP93100 Detailed Introduction
Jan 14, 2026

MODICON 140CRP93100 Detailed Introduction

MODICON 140CRP93100 is a high-performance input and output(I/O)module launched by Schneider,designed for the Modicon Quantum platfo

View News
ABB KUC711AE 3BHB004661R0001 Product Details
Jan 14, 2026

ABB KUC711AE 3BHB004661R0001 Product Details

Here is the information about the product you mentioned, ABB KUC711AE 3BHB004661R0001:Product Parameters,Since the exact parameters

View News

Need a Custom Automation Solution?

Our team of experts can design and implement a tailored automation system to meet your specific requirements.