Allen Bradley 1756-L62 ControlLogix 4MB User Memory CPU

Allen Bradley 1756-L62 ControlLogix Logix5562 Processor 4MB Module

Product Overview

The 1756-L62 is a high-performance programmable automation controller (PAC) belonging to the Allen-Bradley ControlLogix 5560 series by Rockwell Automation. Engineered for large-scale industrial applications, the 1756-L62 (Part Number: 1756-L62) offers 4 MB of user memory and a robust architecture capable of handling complex control logic, advanced motion control, and high-speed discrete I/O tasks.

As a chassis-based module, the 1756-L62 integrates into any slot of a ControlLogix chassis, providing multi-disciplinary control through its ability to manage up to 128,000 total I/O points. Its dual-processor design allows for high-speed communication and execution, making it a reliable standard for automotive, food and beverage, and process industries requiring deterministic performance.

Detailed Technical Specifications

The 1756-L62 is defined by its substantial memory capacity and utility-grade hardware specs:

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model / Part Number: 1756-L62

• Controller Series: Logix5562 (ControlLogix 5560)

• User Memory: 4 MB (User Data and Logic)

• I/O Memory: 478 KB

• Nonvolatile Memory Support: Optional CompactFlash (1784-CF128 or 1784-CF64)

• Maximum Digital I/O: 128,000 points

• Maximum Analog I/O: 4,000 points

• Scan Time (Logic): 0.08 milliseconds per 1K of logic

• Communication Interface: Integrated RS-232 port (supports DF1, DH-485, ASCII)

• Network Support: EtherNet/IP, ControlNet, DeviceNet (via bridge modules)

• Backplane Current (5.1V DC): 1200 mA

• Backplane Current (24V DC): 14 mA

• Power Dissipation: 3.5 Watts

• Thermal Dissipation: 11.9 BTU/hr

• Battery Type: 1756-BA1 or 1756-BATM (Series A); 1756-BA2 (Series B)

• Operating Temperature: 0°C to +60°C (32°F to 140°F)

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