Allen-Bradley 1756-L81E

SKU: 1756-L81E

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Allen-Bradley 1756-L81E | High-Performance ControlLogix 5580 Processor for Demanding Automation

Overview

The Allen-Bradley 1756-L81E is a ControlLogix 5580 series processor designed to deliver high-speed, high-performance control for complex automation systems. With 3 MB of user memory, an embedded Gigabit Ethernet port, and a USB programming port, it supports advanced motion, safety, and process control applications within Rockwell Automation’s Studio 5000 environment.

Key Features

User Memory: 3 MB
Embedded Communication Ports:
- 1 x Gigabit EtherNet/IP port
- 1 x USB 2.0 programming port
Nonvolatile Memory:
- 2 GB Secure Digital (SD) card pre-installed
Task Handling:
- Supports up to 32 tasks
- 1000 programs per task
Programming Languages:
- Relay Ladder Logic (RLL)
- Structured Text (ST)
- Function Block Diagram (FBD)
- Sequential Function Chart (SFC)
I/O Capacity:
- Digital I/O: up to 128,000 points
- Analog I/O: up to 4,000 points
EtherNet/IP Nodes Supported: Up to 100
Energy Storage: Embedded, non-removable module
Display: 4-character alpha/numeric
Mounting: Chassis-based, occupies one slot
Programming Software: Studio 5000 Logix Designer

Technical Specifications

Catalog Number: 1756-L81E
Input Voltage: 5.1 V DC
Current Draw:
- 1.20 A @ 5.1 V DC
- 5.0 mA @ 1.2 V DC
Power Dissipation: 6.2 W
Thermal Dissipation: 21.2 BTU/hr
Operating Temperature: 0°C to 60°C (32°F to 140°F)
Storage Temperature: -40°C to 85°C (-40°F to 185°F)
Relative Humidity: 5% to 95% non-condensing
Shock: 30 g operating
Vibration: 2 g @ 10–500 Hz
Dimensions (HxWxD): 5.461 x 18.161 x 23.622 cm
Weight: Approximately 0.547 kg
Certifications: UL, cULus, CE, ATEX, IECEx, UKCA, RCM, RoHS

Applications

High-speed packaging and material handling systems
Process automation in chemical and pharmaceutical industries
Complex motion control applications
Safety-critical systems requiring integrated safety features
Large-scale manufacturing and assembly lines

Why Choose the 1756-L81E?

Enhanced Performance: Delivers up to 45% more capacity over previous controller generations.
Integrated Communication: Embedded Gigabit Ethernet port enables high-speed I/O and motion control.
Advanced Diagnostics: 4-character display provides enhanced diagnostics and troubleshooting.
Secure Operation: Digitally-signed controller firmware adds an additional layer of security.
Flexible Programming: Supports multiple programming languages within Studio 5000 Logix Designer.

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