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Product Description
The Mitsubishi FX3U80MTDSSK is a high-capacity PLC starter kit with 80 integrated I/O points (40 x 24V DC digital inputs and 40 x 5-30V DC digital outputs), fast processing speeds (0.065 s basic, 0.642 s applied instructions), 64,000-step program memory, and a real-time clock. Expandable via USB and serial interfaces (RS-232C, RS-422, RS-485), it runs on 24V DC, consumes 45W, and is UL, cUL, and CE certified. It measures 285x90x86 mm, weighs 1.2 kg, and includes 8,000 data registers and 32,768 extension registers, expandable via memory cassette.
Is Your Device Showing These Signs?
The Mitsubishi FX3U-80MT/DSSK PLC commonly experiences issues such as program corruption requiring firmware re-installation, I/O module communication failures due to backplane connector oxidation, power supply degradation leading to intermittent operation, and blown transistor outputs from inductive load spikes. Resolving these problems involves PLC memory initialization, cleaning and reseating I/O modules, replacing the power supply unit, and implementing surge suppression diodes across inductive loads. Addressing these ensures optimal PLC functionality and prevents future system downtime.
Technical specifications
The Mitsubishi FX3U80MTDSSK is a high-capacity PLC starter kit with 80 I/O points, fast processing speeds, 64,000-step program memory, and a real-time clock. It's expandable via USB and serial interfaces, runs on 24V DC, consumes 45W, and is UL, cUL, and CE certified. It also includes 8,000 data registers and 32,768 extension registers, expandable via memory cassette.
Our Repair Process for the
FX3U80MTDSSK
Our repair process for the Mitsubishi FX3U-80MT/DSSK PLC begins with complete PLC memory initialization to eliminate program corruption. Next, all I/O modules are meticulously cleaned and reseated to ensure proper communication through the backplane connectors. The power supply unit is then replaced to resolve any degradation issues causing intermittent operation. Finally, surge suppression diodes are installed across all inductive loads connected to the PLC outputs to prevent blown transistor outputs. This comprehensive approach guarantees restored PLC functionality and minimizes the risk of future system failures.
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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