1756-L74 Allen-Bradley ControlLogix Logix5574 Processor

Allen-Bradley 1756-L74 ControlLogix Logix5574 Processor

The Allen-Bradley 1756-L74 is a Programmable Automation Controller (PAC) for ControlLogix systems. This controller provides 16 MB user memory with 0.98 MB I/O memory. It features a built-in USB programming port and supports extensive industrial automation applications.

Product Overview

• Brand: Allen-Bradley / Rockwell Automation
• Model: 1756-L74 Logix5574 Processor
• Type: Programmable Automation Controller (PAC)
• User Memory: 16 MB total capacity
• I/O Memory: 0.98 MB dedicated memory

Memory & Storage

• User Memory: 16 MB for data and logic
• I/O Memory: 0.98 MB for I/O processing
• Non-volatile: 1 GB SD card included (1784-SD1)
• Expansion: Up to 2 GB SD card supported
• Storage: Energy storage module, no battery required

I/O Capacity

• Total I/O: 128,000 maximum points
• Digital I/O: 128,000 maximum points
• Analog I/O: 4,000 maximum points
• Tasks: 32 controller tasks available
• Programs: 100 programs per task

Physical & Electrical

• Current Draw: 800 mA @5.1V, 5 mA @1.2V
• Power Dissipation: 2.5 Watts maximum
• Thermal Dissipation: 8.5 BTU/hour
• Isolation: 30V continuous isolation
• Slot Width: Single-slot controller module

Environmental Ratings

• Temperature: 0 to 60°C operating range
• Storage: -40 to 85°C temperature range
• Shock: 30G operating, 50G non-operating
• Vibration: 10G at 500 Hz, 2G overall
• Enclosure: Open-style module design

FAQ

• Q: What is 1756-L74?
  A: Allen-Bradley Programmable Automation Controller with 16MB memory.
• Q: Storage type used?
  A: Energy storage module, no battery required for memory retention.
• Q: I/O capacity maximum?
  A: 128,000 digital I/O points maximum capacity.