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Mitsubishi MRS120E31

Mitsubishi

Drives

MELSERVO MR-S

MRS120E31

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.

Product Description

The Mitsubishi MRS120E31 is a single-axis servo amplifier with a 3-phase input, designed for use with HA13/HA23 motors. Utilizing a transistor inverter for efficient performance, it operates on 200-220VAC, outputting up to 155V, and features adjustable torque limits (0-100%) controlled via Sine wave PWM for precise movement. Suitable for 0-55C non-condensing environments (storage: -55 to 70C) with up to 90% humidity, this model supports ball screw end detection and 50/60Hz power line frequencies.

Is Your Device Showing These Signs?

The Mitsubishi MRS120E31 commonly experiences failures related to the electrolytic capacitors degrading, leading to reduced power supply efficiency and potential voltage instability. Technicians often address issues such as blown fuses caused by shorted components within the power circuitry. Rectifier diodes failing and causing complete power loss is a common repair. PWM controller IC malfunctions result in erratic output or a complete shutdown of the unit. Overheating due to inadequate thermal management necessitates replacing thermal paste and potentially heatsink upgrades.

Technical specifications

  • The Mitsubishi MRS120E31 is a single-axis servo amplifier for HA13/HA23 motors, featuring a transistor inverter, 200-220VAC input, 155V output, adjustable torque limits (0-100%) via Sine wave PWM, and suitability for 0-55C non-condensing environments with up to 90% humidity. It supports ball screw end detection and 50/60Hz power.

Our Repair Process for the

MRS120E31

Our repair process for the Mitsubishi MRS120E31 begins with a comprehensive diagnostic assessment to pinpoint the failure. Technicians address capacitor degradation by replacing all electrolytic capacitors with high-quality, extended-life components. Blown fuses are replaced, and the underlying shorted components within the power circuitry are identified and repaired or replaced. Rectifier diodes are tested and replaced if found faulty, restoring proper power conversion. PWM controller IC malfunctions are resolved through replacement of the IC, ensuring stable and accurate voltage regulation. Overheating issues are mitigated by replacing the existing thermal paste with a high-performance compound and upgrading the heatsink if necessary to improve thermal dissipation. Each repair concludes with rigorous testing under load to verify stability and adherence to original performance specifications.

Your Guarantee: Warranty & Lifetime Support

Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.

Comprehensive Repairs You Can Depend On

We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.

Save Significantly

Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

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Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

Buying Options

To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

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Ships from Rochester, NY

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