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Description
Overview
The 1756-L72 by Allen-Bradley is a high-capacity programmable automation controller from the ControlLogix platform, engineered for demanding industrial control applications requiring advanced processing capability, extensive communication support, and scalable system architecture.
Designed for integrated automation environments, the controller supports multi-task execution, high-speed backplane communication, and seamless interoperability across EtherNet/IP, ControlNet, DeviceNet, DH+, and Remote I/O networks. The module is suitable for process automation, machine control, packaging systems, material handling, and plant-wide distributed control systems.
The controller installs directly into a standard ControlLogix chassis and supports redundant system configurations for increased operational reliability.
Key Features
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4 MB user memory for large-scale logic and application storage
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Supports up to 32 continuous, periodic, or event tasks
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Allows up to 100 programs per task
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Integrated USB 2.0 programming port
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Supports up to 500 controller connections
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Compatible with multiple industrial communication protocols
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Fully compatible with ControlLogix redundancy systems
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Four-character alphanumeric status display
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High-speed backplane communication performance
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Wide operating temperature range for industrial environments
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Allen-Bradley |
| Product Family | ControlLogix |
| Model Number | 1756-L72 |
| Product Type | Standard Controller Module |
| Controller Class | Programmable Automation Controller |
| User Memory | 4 MB |
| I/O Memory | 0.98 MB |
| Maximum Tasks | 32 |
| Programs per Task | 100 |
| Maximum Connections | 500 |
| USB Port | 1 x USB 2.0 |
| Display | 4-Character Alphanumeric |
| Communication Support | EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, SynchLink |
| Redundancy Support | Yes |
| Backplane Current @ 5.1 VDC | 800 mA |
| Backplane Current @ 1.2 VDC | 5 mA |
| Operating Temperature | 0°C to 60°C |
| Mounting Style | Chassis-Based |
| Enclosure Rating | Open Type |
| Weight | 0.44 lbs |
Communication Capabilities
The 1756-L72 controller is designed for integrated industrial networking and supports a wide range of Allen-Bradley communication platforms. Depending on the installed communication modules, the controller can interface with:
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EtherNet/IP distributed control systems
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ControlNet deterministic networks
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DeviceNet field devices
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Data Highway Plus legacy systems
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Remote I/O architectures
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SynchLink motion synchronization networks
This flexibility allows simplified migration from older automation platforms while maintaining compatibility with existing plant infrastructure.
Application Areas
Typical applications for the 1756-L72 include:
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High-speed manufacturing systems
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Process automation lines
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Packaging and conveyor systems
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Water and wastewater treatment
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Oil and gas facilities
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Automotive production equipment
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Material handling systems
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Hybrid process and discrete control environments
Installation Notes
The controller is intended for installation in a ControlLogix chassis and requires an appropriate power supply module and backplane configuration. Proper grounding, ventilation, and enclosure protection should be provided according to Rockwell Automation installation guidelines.
FAQ
Does the 1756-L72 support Ethernet communication?
Yes. Ethernet communication is supported through compatible ControlLogix EtherNet/IP communication modules.
Can this controller be used in redundant systems?
Yes. The 1756-L72 fully supports ControlLogix controller redundancy configurations.
What programming software is compatible with this controller?
Studio 5000 Logix Designer and RSLogix 5000 software platforms are commonly used for programming and configuration.
Is the USB port used for programming?
Yes. The integrated USB 2.0 port provides direct local programming and maintenance connectivity.
Features
We welcome bulk orders and have a minimum order quantity of just one unit.
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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