Product Details
Overview
The Allen-Bradley 1756-L81E is a high-performance ControlLogix 5580 controller engineered for demanding industrial automation applications. Designed for large-scale PLC systems, it delivers reliable performance with extensive I/O capacity and flexible communication options including Ethernet and USB. This open-style controller is compatible with multiple ControlLogix chassis and supports both standard and redundant power supplies.
Key Features
-
Controller Type: ControlLogix 5580
-
User Memory: 3 MB
-
Maximum Digital I/O: 128,000 points
-
Maximum Analog I/O: 4,000 points
-
Communication Interfaces: 1 Ethernet, 1 USB
-
Isolation Voltage: 50 V continuous
-
Power Dissipation: 6.2 W
-
Thermal Dissipation: 21.2 BTU/hr
-
Current Draw: 1.2 mA (5.1 V), 5 mA (1.2 V DC)
-
Enclosure: Open-style (requires chassis mounting)
-
Compatible Chassis: 1756-A4, A4K, A7, A7K, A10, A10K, A13, A13K, A17, A17K Series B/C
-
Power Supply Compatibility: Standard 1756-PA50, PA72, PA75 series; Redundant 1756-PA75R, PB75R, PSCA2 series
Technical Specifications
-
Manufacturer: Allen-Bradley
-
Part Number: 1756-L81E
-
Category: Programmable Logic Controller (PLC)
-
Application Memory: Large-scale control programs
-
Input/Output Capacity: Up to 128,000 digital I/O and 4,000 analog I/O points
-
Operating Voltage: Matches supported ControlLogix chassis and power supplies
Application Scenarios
The 1756-L81E is suited for:
-
High-speed manufacturing process control
-
Integration into complex PLC networks
-
Large-scale data acquisition and monitoring systems
-
Redundant systems requiring reliable uptime
FAQs
-
Q: What is the maximum I/O supported? Up to 128,000 digital and 4,000 analog points
-
Q: Which communication ports are available? One Ethernet port and one USB port
-
Q: Which chassis can this controller be mounted in? Compatible with 1756-A4, A7, A10, A13, and A17 series
-
Q: Are redundant power supplies supported? Yes, including 1756-PA75R, PB75R, and PSCA2 series
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Essential Maintenance Guide for PLC, DCS, and ESD Marshalling Cabinets
Marshalling cabinets serve as the vital interface between field instrumentation and your core control systems. In large-scale industrial automation, these panels house the intricate wiring for PLC, DCS, and Emergency Shutdown (ESD) systems. Regular, systematic health checks are non-negotiable to ensure operational reliability and prevent costly unplanned downtime.
Industrial PC vs. Commercial PC: Selecting the Right Hardware for Automation
In the demanding world of factory automation, selecting the correct computing platform is critical for system reliability. While commercial PCs power our daily lives, they often fail when subjected to the harsh realities of the production floor. Understanding the fundamental differences between an Industrial PC (IPC) and a standard office PC helps engineers optimize control systems for longevity and performance.
Core Components of Programmable Logic Controllers (PLC) in Industrial Automation
A Programmable Logic Controller (PLC) serves as the digital backbone of modern factory automation. Whether you are managing complex assembly lines or simple process loops, understanding the hardware and software architecture of a PLC is essential for any control systems engineer.