Product Description
The Mitsubishi FX0-20MR-DS, a key FX Series main unit, offers efficient control and monitoring with 12 24VDC digital inputs and 8 relay outputs; it features LED status indicators, operates from 0-55C (stores from -20-70C), requires 24VDC input, consumes 15W, and tolerates 35-85% relative humidity.
Is Your Device Showing These Signs?
The Mitsubishi FX0-20MR-DS commonly experiences issues such as PLC communication errors stemming from corrupted ladder logic programs or faulty RS-422 connections. I/O module failures, specifically with the relay outputs, are frequent and require replacement or repair of the affected circuits. Power supply fluctuations cause erratic behavior, necessitating voltage regulation or power supply unit replacement. Overheating due to inadequate ventilation damages internal components, demanding improved cooling solutions. Finally, software incompatibility during PLC programming leads to operational disruptions, resolved by updating the programming software or firmware.
Technical specifications
The Mitsubishi FX0-20MR-DS is an FX Series main unit with 12 digital inputs, 8 relay outputs, LED indicators, a 0-55C operating temperature, 24VDC input, 15W consumption, and 35-85% humidity tolerance.
Our Repair Process for the
FX0-20MR-DS
Our repair process for the Mitsubishi FX0-20MR-DS begins with a comprehensive diagnostic assessment to pinpoint the root cause of the malfunction, focusing on PLC communication errors, I/O module failures, power supply fluctuations, overheating, and software incompatibility. Corrupted ladder logic programs are corrected or rewritten, and faulty RS-422 connections are repaired or replaced. Defective I/O modules undergo circuit-level repair or complete replacement. Power supply units are stabilized through voltage regulation or replaced entirely. Overheating issues are addressed with enhanced cooling solutions. Software and firmware are updated to ensure compatibility and proper operation. Each repair concludes with rigorous testing to guarantee the PLC functions according to 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.


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.
Ships from Rochester, NY