1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet
1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet
1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet
    1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet
1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet

1756-L84E | Allen-Bradley ControlLogix Logix5580 Processor, 20MB, USB/EtherNet

Part #: 1756-L84E Manufactured by: Allen-Bradley
Regular price
$5,285.00
Sale price
$5,285.00
Regular price
7 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley ControlLogix 1756-L84E is a ControlLogix Controller with N/A I-O Memory, 20 MB User Memory, 128000 Maxim...  Read more
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Product Description P/N: 1756-L84E

Description / Specifications

Description 

The Allen-Bradley 1756-L84E is a ControlLogix 5580 controller designed for high-performance control and large-scale EtherNet/IP architectures. It manages complex automation processes, combining fast execution, extensive memory, and integrated network capabilities. This controller is widely used in advanced manufacturing, motion control, process systems, and high-speed machine applications.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Industrial Controllers
Part Number 1756-L84E
Subcategory ControlLogix 5580 Standard Controller
Type Standard ControlLogix controller
Series / Platform ControlLogix 5580
User Memory 20 MB
Communication Ports 1x Gigabit Ethernet, 1x USB
Supported Devices Up to 250 EtherNet/IP devices
Display Type 4-character alphanumeric status display
Power Requirements 5 mA @ 1.2 VDC; 1.20 A @ 5.1 VDC
Operating Temperature Up to 140 °F (60 °C)
Mounting Type ControlLogix chassis
Application High-speed control, large EtherNet/IP systems, advanced automation
Certifications CCC, CE, CSA, cUL, KC, Marine, NRTL, RCM, UL
Processor High-speed 5580 architecture
Memory Type Nonvolatile and onboard RAM
ETIM Code EC000236
Special Features Standard 5580 performance design

 

 

Information About 1756-L84E

The 1756-L84E belongs to the ControlLogix 5580 controller series from Allen-Bradley and is engineered to provide elevated processing power for modern industrial systems. It includes onboard Gigabit Ethernet, a USB port, and expanded user memory to support extensive program structures. The controller accommodates large EtherNet/IP networks, enabling communication with up to 250 devices and offering optimized data throughput for demanding applications. With its compact chassis-based installation, diagnostic alphanumeric display, and wide certification range, the 1756-L84E fits seamlessly into control systems requiring reliability, cybersecurity-ready hardware, and enhanced execution speed. Built for harsh industrial environments, it maintains stable performance across varied operating temperatures and integrates smoothly with Studio 5000 Logix Designer.

Key Features:

  • High-Performance Processing: Advanced CPU architecture for faster scan times and improved application throughput.
  • Large User Memory: 20 MB of program and data memory for expansive automation projects.
  • Gigabit Ethernet Port: Built-in 1 Gb Ethernet for high-speed EtherNet/IP communication with up to 250 devices.
  • Integrated Diagnostics: 4-character alphanumeric display for system status, module health, and troubleshooting.
  • Secure Connectivity: Supports modern industrial security features and encrypted communication protocols.
  • Flexible Design: Standard ControlLogix chassis mounting for easy system expansion and module configuration.
  • Broad Certification: Meets global industrial standards including UL, CE, CSA, Marine, RCM, and KC approvals.
  • Environmental Resilience: Designed for stable operation in elevated temperatures and demanding automation environments.

The 1756-L84E delivers the reliability and precision required for advanced industrial control and high-performance EtherNet/IP applications.

Frequently Asked Questions about 1756-L84E
Question: What is the main function of the 1756-L84E controller?
Date Update:05/06/2025
Answer:

The 1756-L84E is a high-performance Programmable Automation Controller (PAC) from the ControlLogix 5580 family. Its primary role is to execute control programs and manage complex automation tasks in large-scale industrial systems. It can handle up to 128,000 discrete and 4,000 analog I/O points, making it ideal for advanced machine or process control. The controller supports real-time processing, motion, and safety features. It integrates seamlessly with distributed and local I/O over EtherNet/IP and other industrial networks.

Question: How much user memory is available in the 1756-L84E controller?
Date Update:05/06/2025
Answer:

The 1756-L84E controller includes 20 MB of user memory for logic and data. This large memory capacity allows for the development of complex control applications with many routines, variables, and motion profiles. For expanded storage, it supports a 2 GB SD card (part number 1784-SD2) for non-volatile data and firmware. The SD card also allows storage of diagnostic logs and application backups. This helps ensure system recovery in the event of failure.

Question: Is a battery required for the 1756-L84E controller?
Date Update:05/06/2025
Answer:

No, the 1756-L84E does not require a battery to retain memory. It uses an integrated energy storage module to preserve program and data in case of power loss. This modern solution reduces maintenance and eliminates concerns over battery degradation or replacement. The storage is also safer and more environmentally friendly. It simplifies long-term operation in unattended systems.

Question: What power supplies are compatible with the 1756-L84E?
Date Update:05/06/2025
Answer:

The 1756-L84E is compatible with both standard and redundant ControlLogix power supplies. These include models such as 1756-PA72, 1756-PA75, 1756-PB75, and their redundant counterparts like 1756-PA75R and 1756-PSCA2. Power must be delivered through the backplane in the ControlLogix chassis. The controller draws 5 mA at 1.2 VDC and 1.2 A at 5.1 VDC, with 6.2 Watts power dissipation. Proper power planning ensures stable controller performance.

Question: Is the 1756-L84E still being manufactured and supported?
Date Update:05/06/2025
Answer:

Yes, the 1756-L84E is an active product in Rockwell Automation’s ControlLogix portfolio. It is fully supported with firmware updates, accessories, and technical documentation. This controller is recommended for new designs where high performance and large memory are required. Rockwell also offers lifecycle planning and migration tools. Therefore, the 1756-L84E is a future-ready choice for demanding automation systems.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1756-L84E is a ControlLogix 5580 controller designed for high-performance control and large-scale EtherNet/IP architectures. It manages complex automation processes, combining fast execution, extensive memory, and integrated network capabilities. This controller is widely used in advanced manufacturing, motion control, process systems, and high-speed machine applications.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Industrial Controllers
Part Number 1756-L84E
Subcategory ControlLogix 5580 Standard Controller
Type Standard ControlLogix controller
Series / Platform ControlLogix 5580
User Memory 20 MB
Communication Ports 1x Gigabit Ethernet, 1x USB
Supported Devices Up to 250 EtherNet/IP devices
Display Type 4-character alphanumeric status display
Power Requirements 5 mA @ 1.2 VDC; 1.20 A @ 5.1 VDC
Operating Temperature Up to 140 °F (60 °C)
Mounting Type ControlLogix chassis
Application High-speed control, large EtherNet/IP systems, advanced automation
Certifications CCC, CE, CSA, cUL, KC, Marine, NRTL, RCM, UL
Processor High-speed 5580 architecture
Memory Type Nonvolatile and onboard RAM
ETIM Code EC000236
Special Features Standard 5580 performance design

 

 

Information About 1756-L84E

The 1756-L84E belongs to the ControlLogix 5580 controller series from Allen-Bradley and is engineered to provide elevated processing power for modern industrial systems. It includes onboard Gigabit Ethernet, a USB port, and expanded user memory to support extensive program structures. The controller accommodates large EtherNet/IP networks, enabling communication with up to 250 devices and offering optimized data throughput for demanding applications. With its compact chassis-based installation, diagnostic alphanumeric display, and wide certification range, the 1756-L84E fits seamlessly into control systems requiring reliability, cybersecurity-ready hardware, and enhanced execution speed. Built for harsh industrial environments, it maintains stable performance across varied operating temperatures and integrates smoothly with Studio 5000 Logix Designer.

Key Features:

  • High-Performance Processing: Advanced CPU architecture for faster scan times and improved application throughput.
  • Large User Memory: 20 MB of program and data memory for expansive automation projects.
  • Gigabit Ethernet Port: Built-in 1 Gb Ethernet for high-speed EtherNet/IP communication with up to 250 devices.
  • Integrated Diagnostics: 4-character alphanumeric display for system status, module health, and troubleshooting.
  • Secure Connectivity: Supports modern industrial security features and encrypted communication protocols.
  • Flexible Design: Standard ControlLogix chassis mounting for easy system expansion and module configuration.
  • Broad Certification: Meets global industrial standards including UL, CE, CSA, Marine, RCM, and KC approvals.
  • Environmental Resilience: Designed for stable operation in elevated temperatures and demanding automation environments.

The 1756-L84E delivers the reliability and precision required for advanced industrial control and high-performance EtherNet/IP applications.

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