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Allen-Bradley ControlLogix Repair Specialists

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Allen-Bradley ControlLogix Repair Services by Roc Industrial LLC

Is your Allen-Bradley ControlLogix system experiencing issues? Roc Industrial LLC specializes in providing rapid and reliable Allen-Bradley ControlLogix repair services to minimize downtime and maximize the lifespan of your critical automation equipment. ControlLogix PLCs are the backbone of many industrial automation systems, controlling complex processes and ensuring seamless operation. When these vital components fail, it can lead to significant production losses. That's where Roc Industrial LLC comes in. We offer expert troubleshooting, component-level repair, and comprehensive testing to get your ControlLogix modules back online quickly and efficiently. Trust Roc Industrial LLC for all your Allen-Bradley ControlLogix repair needs, backed by our commitment to quality, speed, and customer satisfaction.



About Allen-Bradley ControlLogix

Allen-Bradley, a brand of Rockwell Automation, is a global leader in industrial automation solutions. Their ControlLogix Programmable Logic Controllers (PLCs) are renowned for their versatility, scalability, and robust performance in demanding industrial environments. ControlLogix systems are designed to handle complex control tasks across a wide range of applications, from discrete manufacturing and process control to motion control and safety systems. These PLCs are highly configurable and can be customized to meet the specific needs of various industries.


ControlLogix PLCs are widely used in industries such as automotive, food and beverage, pharmaceuticals, oil and gas, and many others. Their modular design allows for easy expansion and integration with other automation components, making them a popular choice for both new installations and upgrades to existing systems. The reputation of Allen-Bradley ControlLogix for reliability and performance makes them a critical component in many automated manufacturing and industrial processes. When issues arise, prompt and expert Allen-Bradley ControlLogix repair is essential to maintain operational efficiency and avoid costly downtime. Roc Industrial LLC understands the importance of these systems and provides specialized repair services to keep your operations running smoothly.



Supported Models & Series

We repair a wide range of Allen-Bradley ControlLogix models and series, including but not limited to:

  • 1756-A4, 1756-A7, 1756-A10, 1756-A17 Chassis

  • 1756-B Series Backplanes

  • 1756-CN2 Communication Modules

  • 1756-EN2T, 1756-EN2TR, 1756-EN4 EtherNet/IP Modules

  • 1756-IB16, 1756-IB32 Digital Input Modules

  • 1756-OB8, 1756-OB16, 1756-OB32 Digital Output Modules

  • 1756-IA16, 1756-IA32 AC Input Modules

  • 1756-OA8, 1756-OA16 AC Output Modules

  • 1756-IF6I, 1756-IF8 Analog Input Modules

  • 1756-OF6VI, 1756-OF8 Analog Output Modules

  • 1756-M03SE, 1756-M16SE Motion Control Modules

  • 1756-L61, 1756-L62, 1756-L63, 1756-L71, 1756-L72, 1756-L73, 1756-L81E, 1756-L82E, 1756-L83E Processors

  • ControlLogix Redundancy Modules

  • Power Supplies: 1756-PA50, 1756-PA72, 1756-PB72, 1756-PB75

This list is not exhaustive. If you have a specific Allen-Bradley ControlLogix model not listed, please contact us. Roc Industrial LLC can likely assist with its repair.



Common Allen-Bradley ControlLogix Problems We Repair

Allen-Bradley ControlLogix systems are known for their reliability, but like any electronic equipment, they can experience failures over time. These failures can disrupt your operations and lead to costly downtime. Roc Industrial LLC specializes in diagnosing and repairing a wide range of common ControlLogix problems.

  • Processor Failures: Issues such as the PLC not booting, program corruption, or unexpected shutdowns.

  • Communication Errors: Problems with Ethernet/IP, ControlNet, or other communication protocols, preventing the PLC from communicating with other devices.

  • Power Supply Issues: Failure of the power supply, resulting in the PLC not powering on or experiencing intermittent power loss.

  • I/O Module Failures: Malfunctions in input or output modules, leading to incorrect readings or failure to control connected devices.

  • Memory Errors: Problems with the PLC's memory, causing program errors or data loss.

  • Backplane Issues: Faults in the backplane, preventing modules from communicating with each other.

  • Overheating: Excessive heat buildup, leading to component failures and reduced performance.

  • Firmware Corruption: Issues with the PLC's firmware, causing instability or malfunction.

  • Encoder Faults: Problems with encoder feedback signals, affecting motion control applications.

  • Blown Fuses: Indicates a short circuit or overload within the system.

  • Module Not Recognized: The PLC fails to recognize a newly installed or existing module.

  • Grounding Issues: Improper grounding can lead to erratic behavior and component damage.


Our Allen-Bradley ControlLogix Repair Process

Roc Industrial LLC follows a rigorous and comprehensive repair process to ensure the highest quality Allen-Bradley ControlLogix repair services. Our experienced technicians use state-of-the-art equipment and proven techniques to diagnose and repair your equipment efficiently and effectively.

  1. Free Evaluation and Quote: We start with a free evaluation of your faulty Allen-Bradley ControlLogix module. Our technicians thoroughly assess the unit to identify the root cause of the problem. Based on our findings, we provide you with a detailed quote for the repair, including parts and labor.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your equipment arrives safely at our repair facility. We recommend using a reputable carrier and properly packaging your ControlLogix module to prevent damage during transit.

  3. Diagnosis Using Specialized Test Equipment: Upon arrival, your ControlLogix module undergoes a thorough diagnosis using our specialized test equipment. We simulate real-world operating conditions to identify all potential issues and ensure a comprehensive repair. Our advanced diagnostic tools allow us to pinpoint even the most elusive problems.

  4. Component-Level Repair and Replacement: Our skilled technicians perform component-level repairs, replacing faulty components with high-quality replacements. We maintain a large inventory of Allen-Bradley ControlLogix parts to ensure fast turnaround times. We use only genuine or equivalent components to maintain the integrity and performance of your equipment.

  5. Load Testing and Quality Checks: After the repair is complete, we subject your ControlLogix module to rigorous load testing and quality checks. We simulate various operating conditions to ensure that the unit performs flawlessly and meets all original specifications. Our quality control process ensures that you receive a reliable and fully functional product.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty on all Allen-Bradley ControlLogix repairs. If you experience any issues after the repair, simply contact us, and we will promptly address your concerns. Our commitment to customer satisfaction is our top priority. Roc Industrial LLC provides ongoing support to ensure your continued success.


Nationwide Repair Services

Roc Industrial LLC provides Allen-Bradley ControlLogix repair services to customers nationwide. No matter where you are located, we can help you get your automation equipment back online quickly and efficiently. We understand that downtime can be costly, so we offer fast shipping options and quick turnaround times to minimize disruption to your operations.


We serve customers in major metro areas across the United States, including New York, Los Angeles, Chicago, Houston, and Dallas. Our streamlined repair process and efficient logistics ensure that your Allen-Bradley ControlLogix modules are repaired and returned to you as quickly as possible. Contact Roc Industrial LLC today to learn more about our nationwide repair services.



Why Choose Roc Industrial LLC?

When it comes to Allen-Bradley ControlLogix repair, Roc Industrial LLC is the trusted choice for businesses across the country. We offer a unique combination of experience, expertise, and customer service that sets us apart from the competition.

  • 30+ Years of Experience: With over three decades of experience in industrial electronics repair, we have the knowledge and skills to handle even the most complex Allen-Bradley ControlLogix repairs.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty on all repairs, giving you peace of mind and assurance of quality.

  • Thousands of Parts in Stock: Our extensive inventory of Allen-Bradley ControlLogix parts allows us to complete repairs quickly and efficiently, minimizing downtime.

  • Fast Turnaround, Often Same-Day: We understand the urgency of getting your equipment back online, so we offer fast turnaround times, often with same-day service available.

  • ISO-Certified Repair Processes: Our ISO-certified repair processes ensure that all repairs are performed to the highest standards of quality and consistency.

  • Exceptional Customer Support: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process. We are committed to providing you with a positive and hassle-free experience.

Don't let a faulty Allen-Bradley ControlLogix slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable repair. We are your trusted partner for all your Allen-Bradley ControlLogix repair and service needs.

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