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Allen-Bradley inverter testing: no output fixed

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 Inverter Repair Services by Roc Industrial LLC

Is your Allen-Bradley inverter malfunctioning and causing downtime? Roc Industrial LLC specializes in providing fast, reliable, and expert Allen-Bradley inverter repair services. We understand the critical role inverters play in your industrial operations, whether it's controlling motor speed in a conveyor system, regulating voltage in a power supply, or managing complex automation processes. As a trusted repair provider, Roc Industrial LLC offers comprehensive solutions to get your Allen-Bradley inverters back up and running quickly, minimizing disruption and maximizing productivity. Our experienced technicians are equipped to handle a wide range of inverter issues, from simple component replacements to complex circuit board repairs. We pride ourselves on our commitment to quality, speed, and customer satisfaction.



About Allen-Bradley Inverters

Allen-Bradley, a brand of Rockwell Automation, is a global leader in industrial automation and information solutions. Their inverters, also known as variable frequency drives (VFDs), are renowned for their reliability, performance, and advanced control capabilities. Allen-Bradley inverters are used extensively across various industries, including manufacturing, oil and gas, food and beverage, and water/wastewater treatment. These inverters are designed to precisely control the speed of AC motors, optimizing energy efficiency, improving process control, and extending the lifespan of connected equipment.


Allen-Bradley inverters are integral to numerous applications, from simple pump and fan control to sophisticated CNC machine tools and robotic systems. Their advanced features, such as sensorless vector control, programmable logic, and network connectivity, make them a preferred choice for demanding industrial environments. Roc Industrial LLC understands the intricacies of Allen-Bradley inverter technology and is equipped to provide expert repair and troubleshooting services for a wide range of models and series. We are committed to restoring your Allen-Bradley inverters to their optimal operating condition, ensuring seamless integration with your existing automation infrastructure.



Supported Models & Series

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

  • PowerFlex 4 Series

  • PowerFlex 40 Series

  • PowerFlex 400 Series

  • PowerFlex 525 Series

  • PowerFlex 70 Series

  • PowerFlex 700 Series

  • PowerFlex 753 Series

  • PowerFlex 755 Series

  • PowerFlex 755TS Series

  • PowerFlex 755TM Series

  • PowerFlex 7000 Series (Medium Voltage)

  • Bulletin 160 Series

  • Bulletin 161 Series

  • Ultra Series

  • Kinetix Series (Servo Drives)

This list is not exhaustive. If you have an Allen-Bradley inverter model not listed, please contact us. Roc Industrial LLC has the expertise to handle a diverse range of Allen-Bradley inverter repairs.



Common Allen-Bradley Inverter Problems We Repair

Allen-Bradley inverters, while robust, can experience failures due to various factors, including age, environmental conditions, and operational stresses. Roc Industrial LLC specializes in diagnosing and repairing a wide range of common Allen-Bradley inverter problems. We understand the urgency of getting your equipment back online and offer efficient and reliable repair services.

  • No Output Voltage: The inverter fails to provide the necessary output voltage to the motor, preventing it from running.

  • Overvoltage Fault: The inverter detects an excessive voltage level, triggering a fault and shutting down the system.

  • Undervoltage Fault: The inverter detects an insufficient voltage level, leading to a fault condition.

  • Overcurrent Fault: The inverter detects an excessive current draw, indicating a potential motor or wiring issue.

  • Communication Errors: The inverter fails to communicate with the control system or other devices on the network.

  • Overheating: The inverter's internal temperature exceeds safe limits, causing it to shut down to prevent damage.

  • Blown Fuses: Internal fuses blow due to overcurrent or voltage surges.

  • Encoder Faults: Issues with the encoder feedback signal, preventing accurate motor speed control.

  • Ground Faults: Current leakage to ground, indicating insulation breakdown or wiring problems.

  • DC Bus Problems: Fluctuations or instability in the DC bus voltage, affecting inverter performance.

  • IGBT Failures: Failure of the Insulated Gate Bipolar Transistors (IGBTs), which are critical switching components.

  • Capacitor Failures: Degradation or failure of capacitors, leading to voltage instability and performance issues.

  • Drive Parameter Corruption: Loss or corruption of the inverter's configuration parameters.

  • Display Issues: Malfunctioning display screens or error code displays.

  • Fan Failures: Malfunctioning cooling fans, leading to overheating.


Our Allen-Bradley Inverter Repair Process

Roc Industrial LLC follows a rigorous and comprehensive repair process to ensure the highest quality Allen-Bradley inverter repairs. Our process is designed to identify the root cause of the problem, implement effective solutions, and thoroughly test the repaired inverter to guarantee its performance and reliability.

  1. Free Evaluation and Quote: We offer a free evaluation of your Allen-Bradley inverter to determine the extent of the damage and provide you with a detailed repair quote. There are no hidden fees or obligations.

  2. Shipping Instructions: Once you approve the quote, we will provide you with clear and concise shipping instructions to ensure your inverter arrives safely at our repair facility. We can also arrange for expedited shipping if needed.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use state-of-the-art diagnostic equipment to thoroughly assess the inverter and identify the underlying cause of the failure. We utilize advanced testing techniques to pinpoint component-level issues and ensure accurate diagnosis.

  4. Component-Level Repair and Replacement: We perform component-level repairs whenever possible, replacing faulty components with high-quality replacements that meet or exceed original manufacturer specifications. This approach allows us to provide cost-effective and reliable repair solutions.

  5. Load Testing and Quality Checks: After the repair is complete, we subject the inverter to rigorous load testing to simulate real-world operating conditions. This ensures that the inverter performs flawlessly under stress and meets all performance requirements. We also conduct thorough quality checks to verify the integrity of the repair.

  6. Warranty-Backed Return and Support: All of our Allen-Bradley inverter repairs are backed by a comprehensive warranty, providing you with peace of mind. We also offer ongoing technical support to address any questions or concerns you may have after the repair.


Nationwide Repair Services

Roc Industrial LLC provides Allen-Bradley inverter repair services to customers nationwide. We understand that downtime can be costly, and we are committed to providing fast and efficient repair solutions, regardless of your location. We serve customers in major metropolitan areas, including New York, Los Angeles, Chicago, Houston, and Dallas, as well as smaller cities and rural areas across the country.


We offer fast shipping options and quick turnaround times to minimize disruption to your operations. Our streamlined repair process and efficient logistics ensure that your Allen-Bradley inverter is repaired and returned to you as quickly as possible. Contact us today to learn more about our nationwide repair services and how we can help you keep your operations running smoothly.



Why Choose Roc Industrial LLC?

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

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

  • Warranty-Backed Repairs: All of our repairs are backed by a comprehensive warranty, providing you with peace of mind and assurance of quality.

  • Thousands of Parts in Stock: We maintain a large inventory of Allen-Bradley inverter parts, allowing us to expedite repairs and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the urgency of getting your equipment back online and offer fast turnaround times, often providing same-day repair services.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring that we adhere to the highest standards of quality and consistency.

  • Exceptional Customer Support: We are committed to providing exceptional customer support, from the initial evaluation to the final repair and beyond. Our friendly and knowledgeable staff is always available to answer your questions and address your concerns.

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

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