The Allen-Bradley 1756-L85E is a high-performance ControlLogix 5580 processor module designed for demanding industrial automation environments. This controller offers 40MB of user memory and provides a scalable, robust control engine capable of managing complex motion, process, and discrete control applications.
Features
ControlLogix 5580 architecture with 40MB user memory
Supports up to 300 EtherNet/IP nodes
Integrated 1GB Ethernet port with auto-negotiation (10/100/1000 Mbps)
Dedicated USB 2.0 port for local configuration and programming
Supports up to 32 tasks with up to 1000 programs per task
Includes 2GB nonvolatile memory via 1784-SD2 card
Technical Specifications
Model
1756-L85E
User Memory
40 MB
Discrete I/O Capacity
128,000
Analog I/O Capacity
4,000
Ethernet Speed
10/100/1000 Mbps
Power Dissipation
6.2 Watts
Thermal Dissipation
21.2 BTU/hour
Backplane Current (1.2V DC)
5 mA
Backplane Current (5.1V DC)
1.2 A
Isolation Voltage
50V (continuous)
Applications
Water and Wastewater: Management of pumping stations and monitoring of critical process variables.
Food and Beverage: High-speed filling lines and batching systems requiring precise regulatory compliance.
Life Sciences: Advanced process control for pharmaceutical manufacturing where data integrity and high availability are paramount.
Installation Guidelines
Ensure the chassis is powered down before inserting or removing the controller module.
Align the module circuit board with the top and bottom chassis guides and slide it in until it seats firmly into the backplane.
Use ESD-safe handling practices, such as wearing a grounded wrist strap, to prevent damage to internal components.
For SD card installation, open the front panel door and insert the card with the contact end first (contacts on the right) until it clicks into place.
Ensure proper ventilation around the chassis to maintain operating temperatures within specified limits.
Compliance and Certifications
UL-listed for US and Canada
Class I, Division 2, Groups A, B, C, D hazardous locations
CE-certified for EU compliance
FAQ
What is the 1756-L85E?
It is a high-performance ControlLogix 5580 controller featuring 40 MB of user memory, a USB port, and a 1 GB embedded Ethernet port, designed for applications requiring superior processing speed.
What software is required for programming?
The 1756-L85E is configured and programmed using the Studio 5000 Logix Designer software environment (version 28 or later is recommended).
What are the power requirements for this module?
The controller draws 5.0 mA at 1.2V DC and 1.20 A at 5.1V DC from the backplane.
