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Product Description
The Mitsubishi FX0S-20MR, a robust FX Series main processing unit with 20 I/O points (12 inputs, 8 relay outputs), excels in industrial automation, tolerating 0C-55C operating and -20C-70C storage temperatures, and 35%-85% humidity (non-condensing). It supports 24V DC sink/source inputs, features LED status indicators, offers 800 program steps for complex logic, handles 2.5A per output, and is CE certified.
Is Your Device Showing These Signs?
The Mitsubishi FX0S-20MR PLC commonly experiences issues such as blown internal fuses due to overcurrent events on the 24VDC power supply or output circuits. Troubleshooting often reveals faulty input sensors causing short circuits or miswired output devices exceeding the relay contact ratings, leading to contact welding or coil burnout. Program corruption from power surges or improper memory handling necessitates PLC program reloading and verification. Communication failures via the programming port are frequently traced to damaged RS-422 interfaces or incorrect communication parameters within the PLC configuration. Resolve these issues through careful inspection, component replacement, and adherence to proper wiring practices.
Technical specifications
The Mitsubishi FX0S-20MR is a durable FX Series PLC with 20 I/O (12 inputs, 8 relay outputs) for industrial automation, operating in 0C-55C and storing in -20C-70C, with 35%-85% non-condensing humidity tolerance. It uses 24V DC sink/source inputs, has LED indicators, 800 program steps, 2.5A output capacity, and CE certification.
Our Repair Process for the
FX0S-20MR
Our repair process for the Mitsubishi FX0S-20MR PLC begins with a thorough inspection for blown internal fuses, specifically examining the 24VDC power supply and output circuits. Troubleshooting proceeds to identify faulty input sensors causing short circuits or miswired output devices exceeding relay contact ratings. If program corruption is suspected due to power surges or improper memory handling, the PLC program is reloaded and verified. Communication failures are addressed by inspecting the RS-422 interface for damage and confirming correct communication parameters within the PLC configuration. Resolution involves component replacement as needed, adherence to proper wiring practices, and rigorous testing to ensure the PLC functions according to its original 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.

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