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Delta VFD rebuild with warranty

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.

Delta VFD Repair Services by Roc Industrial LLC

Is your Delta VFD (Variable Frequency Drive) malfunctioning and causing downtime? Roc Industrial LLC specializes in providing fast, reliable, and expert Delta VFD repair services. We understand the critical role these drives play in your industrial operations, and we are committed to getting you back up and running as quickly as possible. Our experienced technicians have the knowledge and skills to diagnose and repair a wide range of Delta VFD models, ensuring optimal performance and minimizing costly disruptions. Trust Roc Industrial LLC for all your Delta VFD repair needs.



About Delta VFDs

Delta Electronics is a globally recognized leader in power electronics and automation solutions, and their VFDs are widely used across various industries. Delta VFDs are known for their reliability, energy efficiency, and advanced control capabilities. They are designed to precisely control the speed of AC motors, optimizing performance and reducing energy consumption in applications such as pumps, fans, conveyors, and machine tools. Delta offers a comprehensive range of VFDs, from compact models for simple applications to high-performance drives for complex industrial processes. Their commitment to innovation and quality has made them a trusted choice for businesses seeking efficient and reliable motor control solutions.


Delta VFDs are integral to numerous industrial applications, including CNC machinery, robotics, HVAC systems, and water treatment plants. Their ability to precisely regulate motor speed and torque contributes to improved process control, reduced energy costs, and extended equipment lifespan. With features like sensorless vector control, built-in PLC functionality, and advanced communication interfaces, Delta VFDs offer a versatile and cost-effective solution for a wide range of motor control requirements. Roc Industrial LLC understands the importance of these drives and provides specialized repair services to ensure their continued reliable operation.



Supported Models & Series

We repair a wide range of Delta VFD models and series, including but not limited to:

  • Delta VFD-B Series (General Purpose)

  • Delta VFD-E Series (Light Duty)

  • Delta VFD-EL Series (Ultra Compact)

  • Delta VFD-M Series (Mini Type)

  • Delta VFD-C2000 Series (High Performance)

  • Delta VFD-CP2000 Series (Fan & Pump)

  • Delta VFD-VE Series (Elevator)

  • Delta VFD-F Series (Crane)

  • Delta VFD-A Series (Advanced Vector Control)

  • Delta MS300 Series

  • Delta ME300 Series

  • Delta MH300 Series

This is not an exhaustive list. Contact us with your specific Delta VFD model number for a free evaluation.



Common Delta VFD Problems We Repair

Delta VFDs are generally reliable, but like any electronic equipment, they can experience failures over time. We have extensive experience troubleshooting and repairing a wide array of issues.

  • No Output Voltage: The VFD fails to provide the necessary voltage to the motor.

  • Overvoltage Fault: The VFD detects an excessive voltage level, triggering a fault.

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

  • Communication Errors: The VFD is unable to communicate with the control system or other devices.

  • Overheating: The VFD's internal temperature exceeds safe operating limits.

  • Blown Fuses: Internal fuses blow due to overloads or short circuits.

  • Encoder Faults: Issues with the encoder feedback system, leading to inaccurate motor control.

  • Drive Won't Power On: The VFD fails to power up, indicating a potential power supply or internal component failure.

  • Parameter Errors: Incorrect or corrupted parameter settings affecting VFD performance.

  • Inconsistent Motor Speed: The motor speed fluctuates or deviates from the setpoint.

  • Display Issues: The VFD display is blank, dim, or shows incorrect information.

  • Ground Faults: The VFD detects a current leakage to ground.


Our Delta VFD Repair Process

Roc Industrial LLC follows a comprehensive and meticulous repair process to ensure the highest quality Delta VFD repairs:

  1. Free Evaluation and Quote: We offer a free evaluation of your faulty Delta VFD to determine the extent of the damage and provide you with a detailed repair quote. There are never any hidden fees.

  2. Shipping Instructions: Once you approve the quote, we will provide you with clear and concise shipping instructions to ensure your VFD arrives safely at our repair facility. We can also arrange for pickup in certain areas.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use state-of-the-art test equipment to thoroughly diagnose the VFD and identify the root cause of the failure. We go beyond simply replacing components and focus on understanding the underlying issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs whenever possible, replacing faulty components with high-quality replacements. This approach allows us to offer cost-effective repairs and extend the lifespan of your VFD. We stock thousands of parts to expedite the repair process.

  5. Load Testing and Quality Checks: After the repair is complete, we subject the VFD to rigorous load testing to ensure it performs optimally under real-world conditions. We also conduct thorough quality checks to verify that all functions are working correctly.

  6. Warranty-Backed Return and Support: We stand behind our repairs with a comprehensive warranty. If you experience any issues with your repaired VFD, simply contact us, and we will resolve the problem promptly. We also offer ongoing technical support to assist you with any questions or concerns.


Nationwide Repair Services

Roc Industrial LLC provides Delta VFD repair services to customers nationwide. Whether you are located in New York, Los Angeles, Chicago, Houston, Dallas, or any other city in the United States, we can help. We offer fast shipping options and quick turnaround times to minimize downtime and get your operations back on track as soon as possible. Our streamlined repair process and efficient logistics ensure that your VFD is repaired quickly and reliably, regardless of your location.



Why Choose Roc Industrial LLC?

When it comes to Delta VFD repair, Roc Industrial LLC is the trusted choice for businesses across the country. Here's why:

  • 30+ Years of Experience: We have over 30 years of experience in industrial electronic repair, giving us the expertise to handle even the most complex Delta VFD repairs.

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

  • Thousands of Parts in Stock: We maintain a large inventory of Delta VFD components, allowing us to expedite repairs and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, and we offer fast turnaround times, often with same-day service available.

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

  • Exceptional Customer Support: We are committed to providing exceptional customer support, and our knowledgeable team is always available to answer your questions and address your concerns.

Don't let a faulty Delta VFD slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Delta VFD repair. We are your trusted partner for all your Delta VFD service and troubleshooting needs. Get your Delta VFD rebuild with warranty from Roc Industrial LLC.

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