The Allen-Bradley 1756-L84E is a high-performance Programmable Automation Controller (PAC) belonging to the ControlLogix 5580 series. Designed for demanding industrial environments, this controller provides robust processing power and integrated connectivity, making it suitable for large-scale automation, motion control, and complex process applications.
Features
Integrated 1 Gb Ethernet port for high-speed communication and EtherNet/IP device support
20 MB of user memory for extensive application logic and data storage
USB 2.0 port for local configuration and firmware updates
Energy storage solution eliminates the need for traditional batteries
4-character alphanumeric display for status and diagnostic information
Supports up to 256 local I/O modules
Applications
Automotive and heavy industry assembly line control
High-speed packaging systems in food and beverage production
Process and safety control in oil, gas, and chemical facilities
Plant-wide distributed I/O management for water and wastewater treatment
Technical Specifications
Product Model
1756-L84E
Series
ControlLogix 5580
User Memory
20 MB
Max Discrete I/O
128,000 points
Max Analog I/O
4,000 points
Power Requirements
5 mA @ 1.2V DC, 1.20 A @ 5.1V DC
Power Consumption
8 W (typical)
Operating Temperature
0 to 60 degC (32 to 140 degF)
Communication Ports
1x 1Gb Ethernet, 1x USB 2.0
Installation Guidelines
Ensure the controller is installed in a ControlLogix chassis with adequate ventilation to maintain operating temperatures within the 0 to 60 degC range.
Power down the chassis before inserting or removing the controller module to prevent electrical damage.
Use shielded Ethernet cabling for high-EMI environments to ensure reliable communication.
Firmware updates should be performed using the ControlFlash or ControlFlash Plus utility via the USB or Ethernet interface.
Studio 5000 Logix Designer (Version 28 or higher) is required for full feature support.
FAQ
What is the 1756-L84E?
It is a high-performance Programmable Automation Controller (PAC) from the ControlLogix 5580 family, designed for large-scale industrial systems, real-time processing, motion control, and safety, with an integrated 1 Gb Ethernet port.
How many I/O points does it support?
It supports a maximum of 128,000 discrete I/O points and 4,000 analog I/O points.
Does the controller require a battery?
No, the 1756-L84E utilizes a modern energy storage solution that eliminates the need for a battery to retain volatile memory contents.
