Product Description
The Mitsubishi MR-J2S-350CP4-S484 servo unit is a versatile, high-performance 3500W motion control solution, operating on 380-480VAC at 50/60Hz, and designed for reliable use in demanding industrial environments with temperatures from 32F to 131F and humidity up to 90% (non-condensing), featuring backlash compensation, absolute position detection, overtravel prevention (with external limit switches), and a user-friendly LED display.
Is Your Device Showing These Signs?
The Mitsubishi MR-J2S-350CP4-S484 servo drive commonly experiences issues such as overcurrent faults due to shorted motor windings or incorrect wiring. Resolve alarms related to encoder feedback by inspecting the encoder cable for damage and verifying proper connections. Address positioning errors by tuning the servo parameters, including gain and integral settings, to optimize responsiveness and stability. Correct communication errors by confirming the correct communication protocol is selected and the communication cable is properly connected to the PLC or motion controller. Repair or replace the drive if internal component failures occur, such as capacitor degradation or IGBT malfunction.
Technical specifications
The Mitsubishi MR-J2S-350CP4-S484 is a 3500W servo unit (380-480VAC) for industrial motion control, featuring environmental resilience, backlash compensation, absolute positioning, overtravel prevention, and an LED display.
Our Repair Process for the
MR-J2S-350CP4-S484
Our repair process for the Mitsubishi MR-J2S-350CP4-S484 servo drive begins with diagnosing overcurrent faults by inspecting motor windings for shorts and verifying wiring accuracy. Encoder feedback alarms are resolved by inspecting the encoder cable for damage and confirming proper connections. Positioning errors are corrected by tuning servo parameters, including gain and integral settings, to optimize responsiveness and stability. Communication errors are addressed by confirming the correct communication protocol is selected and the communication cable is properly connected to the PLC or motion controller. Internal component failures, such as capacitor degradation or IGBT malfunction, necessitate drive repair or replacement.
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.

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.

















