Product Overview
The Allen-Bradley 1756-L83EXT ControlLogix-XT Controller is a high-performance industrial automation module designed for demanding applications. As part of the ControlLogix-XT 5580 series, this controller delivers reliable operation in extreme temperature ranges and vibration-prone environments. With 10 MB of user memory and support for up to 32 controller tasks, the 1756-L83EXT provides the processing power and flexibility required for complex automation systems.
Key Features & Benefits
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Rugged Design: Operates from -25 to 70 °C, with shock tolerance up to 30 G and vibration resistance of 2 G at 10 to 500 Hz.
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High Memory Capacity: 10 MB standard user memory, expandable with optional 2 GB non-volatile memory.
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Multi-Tasking: Supports up to 32 controller tasks and 1000 programs per task, enabling efficient execution of complex control logic.
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Certified Compliance: Approved to CSA, CE, RCM, Ex, IECEx, FM, cULus, KC, and EAC standards for global use.
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Multiple Programming Languages: Supports relay ladder logic, structured text, sequential function chart, and function block diagram.
Technical Specifications
| Specification |
Value |
| Brand |
Allen-Bradley / Rockwell Automation |
| Series |
ControlLogix |
| Part Number |
1756-L83EXT |
| Product Type |
Controller |
| Product Line |
ControlLogix-XT 5580 |
| Controller Tasks |
32 |
| Programs per Task |
1000 |
| Minimum Current Draw |
5 mA at 1.2V DC |
| Maximum Current Draw |
1.2 A at 5.1V DC |
| Shock |
30 G |
| Vibration |
2 G at 10 to 500 Hz |
| Thermal Dissipation |
21.2 BTU/hour |
Industry Applications
The Allen-Bradley 1756-L83EXT excels in industries where environmental extremes are the norm. In oil and gas extraction, the controller's wide operating temperature range and vibration tolerance ensure uninterrupted control of drilling and pumping operations. For water treatment facilities, the 1756-L83EXT manages filtration and chemical dosing processes with precision, while its robust enclosure protects against moisture and temperature fluctuations. Manufacturing plants with high-speed production lines benefit from the controller's multi-tasking capability, allowing simultaneous management of motion control, process control, and safety interlocks.
Installation & Setup Guidance
Mount the 1756-L83EXT in a ControlLogix chassis, preferably in a Series C XT chassis to maintain the extended temperature rating. Ensure adequate clearance for airflow and cable routing. Connect power via the chassis backplane; the controller draws up to 1.2 A at 5.1V DC. For USB and Ethernet connections, use wire category 3 for USB ports and wire category 2 for Ethernet ports. After installation, configure the controller using Rockwell Automation's Studio 5000 software, assigning tasks and programs as per your application requirements.
Maintenance & Reliability
The 1756-L83EXT requires minimal routine maintenance, but periodic inspection of the chassis and connections is recommended. Check for dust accumulation on the controller's heat sink and ensure the surrounding air temperature stays within the -25 to 70 °C range. The controller's non-operating temperature tolerance of -40 to 85 °C allows for safe storage in extreme climates. With a mean time between failures designed for long service life, the 1756-L83EXT minimizes downtime and reduces total cost of ownership.
Compatibility & Integration
The 1756-L83EXT integrates seamlessly with other ControlLogix-XT 5580 controllers and I/O modules. It supports standard ControlLogix communication interfaces, including Ethernet and USB ports, allowing easy connection to plant networks and programming terminals. The controller's compliance with international standards ensures compatibility with global automation systems.
Buying Guide & Selection Advice
Before purchasing the Allen-Bradley 1756-L83EXT, verify your system's chassis compatibility and power supply capacity. Confirm that your application requires the extended temperature range and memory capacity. For additional memory, order the optional 2 GB non-volatile memory module separately. PLC Source PRO offers genuine Allen-Bradley 1756-L83EXT controllers with fast shipping and expert support. Contact our team to confirm stock and lead times.