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Mitsubishi servo drive calibration troubleshooting guide

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.

Mitsubishi Servo Drive Repair Services by Roc Industrial LLC

Is your Mitsubishi servo drive malfunctioning and causing downtime? Roc Industrial LLC specializes in fast, reliable Mitsubishi servo drive repair services to get your equipment back up and running quickly. We understand the critical role servo drives play in your automation systems, and our experienced technicians are equipped to diagnose and repair a wide range of issues. With our commitment to quality and speed, Roc Industrial LLC is your trusted partner for Mitsubishi servo drive repair.



About Mitsubishi Servo Drives

Mitsubishi Electric is a global leader in automation technology, and their servo drives are renowned for their precision, reliability, and performance. Mitsubishi servo drives are integral components in various industrial applications, including CNC machines, robotics, packaging equipment, and other automated systems. These drives provide precise motor control, enabling accurate positioning, speed regulation, and torque control. Mitsubishi's commitment to innovation has resulted in a diverse portfolio of servo drives designed to meet the evolving needs of modern manufacturing.


Mitsubishi servo drives are widely used in industries such as automotive, electronics, food and beverage, and pharmaceuticals. Their robust design and advanced features make them suitable for demanding environments and critical applications. From compact, general-purpose drives to high-performance, multi-axis systems, Mitsubishi offers a solution for virtually any servo control requirement. Roc Industrial LLC understands the intricacies of Mitsubishi servo drive technology and provides expert repair services to ensure optimal performance and longevity.



Supported Models & Series

We repair a wide range of Mitsubishi servo drive models and series, including but not limited to:

  • MELSERVO-J2 Series

  • MELSERVO-J3 Series

  • MELSERVO-J4 Series

  • MELSERVO-JE Series

  • MELSERVO-JN Series

  • MR-J2S Series

  • MR-J3 Series

  • MR-J4 Series

  • MR-JE Series

  • MR-JN Series

  • MR-C Series

  • MR-E Series

  • MR-ES Series

  • HG Series Motors

  • HF Series Motors

  • LM Series Linear Motors

  • Direct Drive Motors (DDM)

This is not an exhaustive list. If you don't see your specific model listed, please contact us. We have the expertise to repair a vast array of Mitsubishi servo drives, both current and legacy models.



Common Mitsubishi Servo Drive Problems We Repair

Mitsubishi servo drives are known for their reliability, but like any electronic equipment, they can experience failures over time. Our technicians are highly skilled in diagnosing and repairing a wide range of common issues. Here are some of the most frequent problems we encounter:

  • No Output: The servo drive fails to provide any power to the motor, resulting in a complete system shutdown.

  • Overvoltage/Undervoltage Errors: The drive detects voltage levels outside the acceptable range, triggering a fault.

  • Communication Errors: The servo drive loses communication with the controller or other devices in the system.

  • Overheating: The drive's internal temperature exceeds the safe operating limit, potentially causing damage to components.

  • Blown Fuses: Internal fuses blow due to overcurrent or short circuits, interrupting power flow.

  • Encoder Faults: The encoder, which provides feedback on motor position, malfunctions, leading to inaccurate control.

  • Motor Stalling: The motor fails to rotate or stops unexpectedly during operation.

  • Positioning Errors: The servo drive is unable to accurately position the motor at the desired location.

  • Speed Fluctuations: The motor speed varies erratically, affecting the performance of the application.

  • Drive Alarms: The servo drive displays error codes or alarms indicating a specific fault condition.

  • Power Supply Issues: Problems with the internal power supply can cause a variety of malfunctions.

  • Software or Firmware Corruption: Corrupted software or firmware can lead to unpredictable behavior and drive failure.


Our Mitsubishi Servo Drive Repair Process

Roc Industrial LLC follows a rigorous and comprehensive repair process to ensure the highest quality and reliability. Our process is designed to quickly identify the root cause of the problem and implement effective solutions.

  1. Free Evaluation and Quote: We begin with a free evaluation of your Mitsubishi servo drive 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 provide clear and concise shipping instructions to ensure your servo drive 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 advanced diagnostic tools and techniques to pinpoint the exact cause of the failure. We have specialized test equipment designed specifically for Mitsubishi servo drives.

  4. Component-Level Repair and Replacement: We perform component-level repairs whenever possible, replacing only the faulty components. This approach saves you money and reduces waste. We use only high-quality replacement parts that meet or exceed original manufacturer specifications.

  5. Load Testing and Quality Checks: After the repair is complete, we thoroughly load test the servo drive to ensure it performs flawlessly under real-world conditions. We conduct rigorous quality checks to verify that all parameters are within acceptable limits.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty. If you experience any issues after the repair, we will provide prompt and professional support. Your satisfaction is our top priority.


Nationwide Repair Services

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


We have established relationships with reliable shipping carriers to ensure your servo drive is transported safely and efficiently. Our team is experienced in handling delicate electronic equipment and takes extra precautions to prevent damage during transit. We also provide tracking information so you can monitor the progress of your shipment.



Why Choose Roc Industrial LLC?

When it comes to Mitsubishi servo drive repair, Roc Industrial LLC offers several key advantages:

  • 30+ Years of Experience: Our technicians have decades of experience in repairing industrial electronic equipment, including Mitsubishi servo drives.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty, giving you peace of mind.

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

  • Fast Turnaround, Often Same-Day: We understand the urgency of your repair needs and strive to provide the fastest possible turnaround times, often offering same-day service.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring 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 Mitsubishi servo drive slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable repair. We are committed to providing you with the best possible service and getting your equipment back up and running as quickly as possible. Our expertise in Mitsubishi servo drive repair is unmatched, and we are confident that we can solve even the most complex problems. Trust Roc Industrial LLC for all your Mitsubishi servo drive service needs.

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