Allen-Bradley 1756-L1M2 ControlLogix Processor Module

SKU 1756-L1M2

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-L1M2
Country of origin:United States
Product Type: Processor Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 350g
Dimensions: 145 mm x 35 mm x 135 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Description

The Allen-Bradley 1756-L1M2 is a ControlLogix 5550 controller processor module. It provides 1 MB of user-available memory without nonvolatile memory. The module is designed to control local and remote I/O across DeviceNet, ControlNet, and Universal Remote I/O networks. Built with an open-style enclosure, it features Group 1, Class A emissions.

The 1756-L1M2 features an average power dissipation of 4.8 W and an average thermal dissipation of 16.4 BTU/hr. It operates with an average backplane current of 1.05 A at 5V DC and 0.02 A at 24V DC. The controller supports serial communications using 1756-CP3 or 1747-CP3 programming cables and relies on a 1756-BA1 0.59g lithium battery for memory backup.

Features

Integrated ControlLogix 5550 controller architecture
Open-style enclosure construction
Multi-network I/O control across DeviceNet, ControlNet, and Universal Remote I/O
Direct interface with 1756-CP3 and 1747-CP3 serial programming cables
Dedicated battery backup using the 1756-BA1 lithium battery

Applications

Industrial PLC and PAC control systems
Process control across DeviceNet and ControlNet networks
Distributed I/O management and communication routing
General factory automation and machine control

Technical Specifications

Parameter	Value
Manufacturer	Allen-Bradley
Category	PLCs
Product Line	ControlLogix
Part Number	1756-L1M2
Module Type	Processor Module
User Available Memory	1 MB
Expansion Memory	1 MB
Enclosure Type	Open
Isolation Voltage	30V Continuous (Tested to withstand 500V for 60 seconds)
Operating Temperature	0 to 60 degC (32 to 140 Fahrenheit)
Storage Temperature	-40 to 85 degC (-40 to 185 Fahrenheit)
Relative Humidity	5% to 95% noncondensing
Minimum Operating Current	2 mA at 10V DC
Maximum Operating Current	3.5 mA at 30V DC
Maximum Input Current (Off-State)	1.5 mA
Peak Backplane Current (+5V DC)	1.05 A
Peak Backplane Current (+24V DC)	0.02 A
Average Power Dissipation	4.8 W
Maximum Power Dissipation	4.1 W at 60 degC
Average Thermal Dissipation	16.4 BTU/hr
Vibration	10 to 500 Hz, 2.0 G maximum peak acceleration
Operating Shock	30 G peak for 11 ms
Storage Shock	50 G peak for 11 ms
Conducted RF Immunity	10Vrms with 1 kHz sine-wave 80%AM from 150 kHz to 80 MHz
ESD Immunity	6 kV contact discharges, 8 kV air discharges
EFT/B Immunity	+/-2 kV at 5 kHz on communication ports, +/-4 kV at 2.5 kHz on power ports
Radiated RF Immunity	10V/m with 200 Hz 50% Pulse 100%AM at 900 MHz; 10V/m with 1 kHz sine-wave 80%AM from 30 MHz to 1000 MHz
Programming Cable	1756-CP3 or 1747-CP3 serial cable
Battery	1756-BA1 (0.59g lithium)
Weight	12.5 oz. (0.35 kg)
UPC	10612598180988

Installation Guidelines

Enclosure Protection: The module must be mounted within a suitable enclosure to prevent personal injury resulting from accessibility to live parts, accessible only by use of a tool.
Handling Precautions: Wear an approved grounding wriststrap and avoid touching connectors, pins, or internal circuit components to guard against electrostatic discharge (ESD) damage.
Chassis Removal & Insertion: Verify locking tabs are secured on top and bottom during installation. Ensure backplane power considerations are observed when inserting or removing modules to avoid arcing.
Battery Handling: Ensure the 1756-BA1 battery is changed only in an area known to be nonhazardous.

Compliance and Certifications

Listed Industrial Control Equipment
Certified Process Control Equipment
Certified Class I, Division 2, Groups A, B, C, D Hazardous Locations
CE Marked for applicable directives

FAQ

What is the available user memory for the module?

The module provides 1 MB of user-available memory.

Which battery model is required for memory retention?

The module requires a 1756-BA1 0.59g lithium battery.

What programming cables are compatible with the device?

The module is compatible with 1756-CP3 and 1747-CP3 serial programming cables.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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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	DC Power