Allen-Bradley 1756-L1M1 ControlLogix 5550 Controller Processor

SKU 1756-L1M1

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-L1M1
Country of origin:United States
Product Type: PLC Controller
Payment: T/T, Western Union
Weight: 380g
Dimensions: 14.5 x 11.2 x 3.5 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The Allen-Bradley 1756-L1M1 is a ControlLogix 5550 controller processor designed to provide high-performance process control and communication capabilities within the Logix platform. As part of the ControlLogix system, this controller mounts directly into any slot of a 1756 ControlLogix chassis and operates independently or as part of a multi-controller architecture. It provides reliable execution of user control programs, motion control, and data handling across demanding industrial automation environments.

This controller features onboard memory for user logic and data storage, supporting seamless integration with RSLogix 5000 programming software. It requires a 1756-BA1 replaceable lithium battery for RAM backup and utilizes standard communication cabling, such as the 1756-CP3 serial cable, for direct controller access and configuration.

Features

Standard ControlLogix 5550 controller architecture compatible with standard 1756 chassis slots
Supports multi-tasking, high-speed execution of relay ladder logic, structured text, and function block diagrams
Equipped with a serial port for programming, configuration, and ASCII communication
Utilizes the replaceable 1756-BA1 lithium battery for volatile memory backup during power loss
Integrates into NetLinx architecture via communication modules for EtherNet/IP, ControlNet, and DeviceNet connectivity

Applications

Discrete, process, batch, and drive control systems
Complex manufacturing assembly lines and packaging machinery
Automotive manufacturing plants and material handling systems
Water and wastewater treatment facility automation

Technical Specifications

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Product Line	ControlLogix 5550
Catalog Number	1756-L1M1
Enclosure Type	Open-style
Backplane Current Draw (5V DC)	120 mA
Backplane Current Draw (24V DC)	2 mA
Power Dissipation	4.1 W max. at 60 Celsius
Isolation Voltage	30V (continuous), basic insulation type (communication ports to backplane)
Operating Temperature	0 to 60 Celsius (32 to 140 Fahrenheit)
Memory / Battery Backup	1756-BA1 lithium battery module
Communication Port	RS-232 serial communication port (compatible with 1756-CP3 cable)
Country of Origin	United States

Connections / Interfaces

The 1756-L1M1 controller features a front-facing RS-232 communication port used primarily for controller configuration, troubleshooting, and serial communication. System power and chassis communication are established directly through the module's connection to the 1756 ControlLogix backplane when inserted into any available slot.

Installation Guidelines

Ensure all power to the 1756 ControlLogix chassis is turned off before inserting or removing the controller.
Align the circuit board of the 1756-L1M1 with the chassis guide rails for your chosen slot.
Slide the module firmly into the chassis until the top and bottom latches snap into place, securing the module to the backplane connectors.
Connect any required programming cables or communication links to the front interface ports.
Restore chassis power and verify proper diagnostic indicator states on the front display panel.

FAQ

What chassis slots are compatible with the Allen-Bradley 1756-L1M1?

The 1756-L1M1 controller can be installed in any available slot of a 1756 ControlLogix chassis, as it does not require a specific slot position like some communication modules.

What programming software is used with the 1756-L1M1?

This controller is programmed using RSLogix 5000 software, which supports configuration, tag management, and logic development.

What battery does the 1756-L1M1 controller require?

The controller utilizes the 1756-BA1 replaceable lithium battery module for maintaining volatile RAM memory when power is removed.

What cable is required for serial connection to the 1756-L1M1?

The front serial port is compatible with the 1756-CP3 serial communication cable for direct connection to a programming workstation.

View all FAQs →

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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

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