Allen-Bradley

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.

Technical Datasheet

Allen-Bradley 1756-L1M2 ControlLogix Processor Module

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Shipping & Returns

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  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
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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
DC Power

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