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feedback encoder MOSFET failure testing for Fuji Electric

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.

Fuji Electric Repair Services by Roc Industrial LLC

Is your Fuji Electric equipment malfunctioning? Roc Industrial LLC provides comprehensive Fuji Electric repair services to get your operations back up and running quickly. We specialize in the repair of Fuji Electric servo drives, power supplies, PLCs, and other industrial automation components. With our commitment to speed, reliability, and unparalleled expertise, Roc Industrial LLC is your trusted partner for all your Fuji Electric repair needs. We understand the critical role Fuji Electric equipment plays in your operations, and our goal is to minimize downtime and maximize the lifespan of your valuable assets.



About Fuji Electric

Fuji Electric is a globally recognized leader in industrial automation, power electronics, and energy solutions. With a history spanning over a century, Fuji Electric has established a strong reputation for innovation, quality, and reliability. Their product portfolio includes a wide range of servo systems, inverters, power supplies, PLCs, and instrumentation, all designed to enhance efficiency and productivity in various industrial applications. Fuji Electric products are known for their robust performance and advanced features, making them a preferred choice for demanding environments.


Fuji Electric equipment is widely used in industries such as CNC machining, robotics, automation, manufacturing, and energy management. Their servo drives are particularly renowned for their precision and responsiveness, enabling accurate motion control in critical applications. Fuji Electric power supplies are designed to deliver stable and reliable power, ensuring the consistent operation of sensitive electronic equipment. Roc Industrial LLC understands the intricacies of Fuji Electric technology and provides expert repair services to keep your equipment performing at its best.



Supported Models & Series

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

  • Servo Drives:

    • FALDIC-α Series (Alpha)

  • FALDIC-β Series (Beta)

  • FALDIC-W Series

  • FALDIC-X Series

  • FALDIC-EG1 Series

  • Power Supplies:

    • PWS Series

  • PWZ Series

  • FRENIC Series Power Supply Units

  • Inverters (AC Drives):

    • FRENIC-Ace Series

  • FRENIC-Mini Series

  • FRENIC-Multi Series

  • FRENIC-VG Series

  • PLC (Programmable Logic Controllers):

    • MICREX-SX Series

  • SPH Series

  • HMI (Human Machine Interface):

    • TechnoTop Series

  • MONITOUCH V9 Series


  • Common Fuji Electric Problems We Repair

    Fuji Electric equipment, while reliable, can experience failures due to age, environmental factors, or operational stress. Roc Industrial LLC specializes in diagnosing and repairing a wide range of common Fuji Electric problems. Our experienced technicians are equipped to handle even the most complex issues, ensuring that your equipment is restored to optimal performance.

    • Servo Drive Failures:

      • No output or weak output

    • Overcurrent faults

    • Overvoltage faults

    • Communication errors (e.g., serial communication failure)

    • Encoder faults (positioning errors, feedback issues)

    • Feedback encoder malfunctions

    • Motor overheating

    • Inconsistent or erratic motor movement

    • Drive tripping or shutting down unexpectedly

  • Power Supply Issues:

    • No output voltage

  • Low output voltage

  • Unstable output voltage

  • Overvoltage protection triggering

  • Blown fuses or circuit breakers

  • Internal component failures (e.g., capacitor failure)

  • Inverter Problems:

    • Drive not starting

  • Motor speed fluctuations

  • Overload faults

  • Short circuit faults

  • Ground faults

  • Parameter errors

  • MOSFET failure

  • PLC Malfunctions:

    • CPU errors

  • Memory failures

  • I/O module failures

  • Communication problems

  • Power supply issues

  • General Issues:

    • Component failures on circuit boards

  • Wiring problems

  • Connector issues

  • Damage from power surges or lightning strikes

  • Environmental contamination (dust, moisture, etc.)


  • Our Fuji Electric Repair Process

    Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality Fuji Electric repairs. Our process is designed to identify the root cause of the problem, implement effective repairs, and thoroughly testing the equipment to guarantee its performance and reliability.

    1. Free Evaluation and Quote: We begin with a free evaluation of your Fuji Electric equipment to determine the extent of the damage and provide you with a detailed repair quote. There are no hidden fees or surprises.

    2. Shipping Instructions: Once you approve the quote, we provide clear and easy-to-follow shipping instructions to ensure your equipment arrives safely at our repair facility. We can also arrange for pickup services in certain areas.

    3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use state-of-the-art diagnostic equipment to pinpoint the exact cause of the failure. We utilize advanced testing methods to identify even the most elusive problems.

    4. Component-Level Repair and Replacement: We perform component-level repairs whenever possible, replacing only the faulty components to minimize costs. We use only high-quality replacement parts that meet or exceed OEM specifications.

    5. Load Testing and Quality Checks: After the repair is complete, we subject the equipment to rigorous load testing and quality checks to ensure it meets performance standards. We simulate real-world operating conditions to verify its reliability.

    6. Warranty-Backed Return and Support: All of our Fuji Electric repairs are backed by a comprehensive warranty, giving you peace of mind. We also provide ongoing technical support to address any questions or concerns you may have.


    Nationwide Repair Services

    Roc Industrial LLC provides Fuji Electric repair services to customers nationwide. We understand that downtime can be costly, so we offer fast turnaround times and flexible shipping options to minimize disruption to your operations. Whether you are located in New York, Los Angeles, Chicago, Houston, Dallas, or any other city in the United States, we are here to help.


    We offer expedited shipping options to ensure your equipment is returned to you as quickly as possible. Our team is dedicated to providing exceptional customer service and support throughout the repair process. Contact us today to learn more about our nationwide Fuji Electric repair services.



    Why Choose Roc Industrial LLC?

    When it comes to Fuji Electric repairs, Roc Industrial LLC stands out as the premier choice. 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 electronic repair, we have the knowledge and skills to handle even the most complex Fuji Electric repairs.

    • Warranty-Backed Repairs: All of our repairs are backed by a comprehensive warranty, giving you peace of mind and ensuring the quality of our workmanship.

    • Thousands of Parts in Stock: We maintain a large inventory of Fuji Electric parts, allowing us to complete repairs quickly and efficiently.

    • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, so we offer fast turnaround times, often completing repairs on the same day.

    • 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: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process.

    Don't let a faulty Fuji Electric component slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Fuji Electric repair. We are committed to providing the highest quality repair services to keep your equipment running smoothly.

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