Allen-Bradley 1756-L1M3 ControlLogix Processor Module

Experience enhanced automation control with the 1756-L1M3 processor from Allen-Bradley's premium ControlLogix 5550 series. This high-performance controller offers substantial memory capacity and robust industrial durability for demanding applications.

Product Overview

• Brand: Allen-Bradley / Rockwell Automation
• Series: ControlLogix 5550
• Model: 1756-L1M3
• Module Type: Processor Controller
• Enclosure Type: Open-style design
• Weight: 0.36 kg (12.7 ounces)

Technical Specifications

• User Memory: 2 MB available memory
• I/O Memory: 150 KB dedicated capacity
• Nonvolatile Memory: Not included
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Relative Humidity: 5% to 95% non-condensing
• Backplane Current: 1.20A @ 5.1V DC, 0.02A @ 24V DC
• Power Dissipation: 5.4 Watts average
• Thermal Dissipation: 18.4 BTU/hour
• Isolation Voltage: 30V continuous operation
• Dielectric Strength: 500V withstand for 60 seconds
• ESD Immunity: 6kV contact, 8kV air discharge
• Vibration Resistance: 2.0G peak, 10-500 Hz range
• Shock Resistance: 30G operating, 50G storage
• Emissions Rating: Group 1, Class A

Installation & Setup

• Install in any ControlLogix chassis slot for maximum flexibility
• Use compatible 1756-CP3 or 1747-CP3 serial cables
• Replace battery with genuine 1756-BA1 lithium battery only
• Ensure proper chassis grounding and power distribution
• Follow ESD protection protocols during handling

Compatibility & Accessories

• Replacement Battery: 1756-BA1 (0.59g lithium)
• Programming Cables: 1756-CP3, 1747-CP3 serial cables
• Terminal Blocks: 1756-TBCH, 1756-TBS6H
• Chassis Compatibility: All ControlLogix chassis models
• Software Platform: Rockwell Automation Studio 5000

For comprehensive technical documentation and installation guides, download our detailed specification sheet: Download 1756-L1M3 Datasheet

Packaging & Shipping

• Package Contents: 1 x 1756-L1M3 Processor Module
• Shipping Methods: FedEx, UPS, DHL express worldwide
• Quality Assurance: 12-month performance warranty

Frequently Asked Questions

• What is the main advantage of the 2MB memory?
  The expanded memory supports more complex logic and data handling for advanced applications.
• Can I use this controller in high-vibration environments?
  Yes, it withstands vibrations up to 2.0G peak acceleration from 10-500 Hz.
• What programming cables are compatible?
  Use 1756-CP3 or 1747-CP3 category 3 serial cables for programming.
• How does it handle electrical surges?
  It features 6kV contact and 8kV air discharge ESD protection for reliability.
• What is the power consumption during operation?
  The module averages 5.4 Watts power dissipation during normal operation.

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