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Allen-Bradley 1756-L72K ControlLogix Logix5572 Processor with conformal coating

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Allen-Bradley 1756-L72K

by Allen-Bradley

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OverviewThe Allen-Bradley 1756-L72K ControlLogix Logix5572 Processor is specifically designed for high performance and exceptional resilience in tough industrial environments. This robust processor establishes a new benchmark for dependability, incorporating advanced conformal coating for protection against moisture, corrosive substances, and dust. Its solid construction makes the 1756-L72K an excellent option for applications where standard processors are inadequate, guaranteeing continuous operation and a prolonged service life. Featuring a substantial 4MB of user memory and 0.98MB of I/O memory, this ControlLogix processor capably handles complex automation tasks. It provides remarkable expandability, supporting an impressive 128,000 digital I/O points and 4,000 analog I/O points, making it ideal for highly integrated and extensive industrial control systems. Manage intricate processes and large networks with unwavering dependability and precision. Connectivity is streamlined with the integrated USB 2.0 port, allowing for quick programming, firmware updates, and data transfers. The 1756-L72K supports a wide array of industrial communication protocols, including EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink. This broad compatibility ensures easy integration into your existing infrastructure, offering a versatile and future-ready solution for diverse automation needs.Key Features Protective Conformal Coating: Offers unmatched defense against moisture, particulates, and corrosive industrial agents, extending operational longevity. Ample Memory Capacity: Includes 4MB user memory and 0.98MB I/O memory for efficient handling of large-scale, intricate automation applications. Extensive I/O Support: Manages up to 128,000 digital I/O points and 4,000 analog I/O points, providing superior scalability for any industrial setup. Integrated USB 2.0: Facilitates high-speed data transmission and simplified programming, enabling fast configuration and upkeep. Broad Network Compatibility: Supports all major industrial communication protocols, such as EtherNet/IP, ControlNet, DeviceNet, and DH+, for flexible integration. Seamless ControlLogix Integration: Optimized for use within Rockwell Automation platforms, ensuring fluid and efficient performance. Technical Specifications Model: 1756-L72K Series: ControlLogix Logix5572 User Memory: 4MB I/O Memory: 0.98MB Digital I/O Capacity: 128,000 Points Analog I/O Capacity: 4,000 Points Communication Ports: USB 2.0 (Full Speed, 12 Mbps) Industrial Network Compatibility: EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, SynchLink Conformal Coating: Yes (for harsh environments) Chassis Compatibility: ControlLogix Operating Temperature: 0°C to 60°C (32°F to 140°F) Applications Demanding Industrial Settings: Ideal for factories, processing facilities, and outdoor installations exposed to extreme conditions. Large-Scale Automation: Perfectly suited for managing intricate and expansive automation systems with numerous control points. Process Control & Manufacturing: Enhances real-time automation efficiency in critical manufacturing and process control operations. Motion Control & Robotics: Delivers precise and responsive control for high-speed motion applications and robotic systems. SCADA & Distributed Control Systems (DCS): Facilitates advanced network integration and robust control within supervisory and distributed control architectures. Water and Wastewater Treatment: Provides reliable automation for critical infrastructure in challenging environments. Why ChooseThis model stands out due to its extreme durability, high performance, and maximum scalability. The conformal coating ensures long-term reliability in challenging industrial conditions. Its powerful processing and extensive memory support complex automation and rapid data handling. With support for a vast number of I/O points, it can expand to meet diverse application needs.Order NowContact us today for pricing and availability of the Allen-Bradley 1756-L72K ControlLogix Logix5572 Processor.FAQWhat environments is the 1756-L72K designed for?The 1756-L72K is engineered for harsh industrial environments, offering protection against moisture, dust, and corrosive elements due to its conformal coating.What is the memory capacity of this processor?It features 4MB of user memory and 0.98MB of I/O memory to handle complex automation applications.How many I/O points can it support?This processor supports up to 128,000 digital I/O points and 4,000 analog I/O points.What communication protocols are compatible?It is compatible with EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink.Can this processor be integrated into existing Rockwell Automation systems?Yes, it is optimized for seamless integration within Rockwell Automation systems.

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PRODUCT DETAILS

Allen-Bradley 1756-L72K

Overview

This is a genuine Allen-Bradley component from the ControlLogix family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside ControlLogix installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1756-L72K
  • Series: ControlLogix Logix5572
  • User Memory: 4MB
  • I/O Memory: 0.98MB
  • Digital I/O Capacity: 128,000 Points
  • Analog I/O Capacity: 4,000 Points
  • Communication Ports: USB 2.0 (Full Speed, 12 Mbps)
  • Industrial Network Compatibility: EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, SynchLink
  • Conformal Coating: Yes (for harsh environments)
  • Chassis Compatibility: ControlLogix
  • Operating Temperature: 0°C to 60°C (32°F to 140°F)

Applications

  • Demanding Industrial Settings: Ideal for factories, processing facilities, and outdoor installations exposed to extreme conditions.
  • Large-Scale Automation: Perfectly suited for managing intricate and expansive automation systems with numerous control points.
  • Process Control & Manufacturing: Enhances real-time automation efficiency in critical manufacturing and process control operations.
  • Motion Control & Robotics: Delivers precise and responsive control for high-speed motion applications and robotic systems.
  • SCADA & Distributed Control Systems (DCS): Facilitates advanced network integration and robust control within supervisory and distributed control architectures.
  • Water and Wastewater Treatment: Provides reliable automation for critical infrastructure in challenging environments.

Why Choose the 1756-L72K?

This model stands out due to its extreme durability, high performance, and maximum scalability. The conformal coating ensures long-term reliability in challenging industrial conditions. Its powerful processing and extensive memory support complex automation and rapid data handling. With support for a vast number of I/O points, it can expand to meet diverse application needs.

Availability & Shipping

  • In stock: 1756-L72K ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1756-L72K ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1756-L72K is engineered for harsh industrial environments, offering protection against moisture, dust, and corrosive elements due to its conformal coating.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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