{"product_id":"fx3u-80mres-a","title":"Mitsubishi FX3U-80MR\/ES-A","description":"\u003cstyle\u003e\n.flexa-desc { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif; color:#1f2937; line-height:1.7; }\n.flexa-desc .desc-intro { font-size:15px; color:#374151; margin-bottom:0; }\n.flexa-desc .desc-section { margin-top:28px; }\n.flexa-desc .desc-section-title { font-size:15px; font-weight:700; color:#111827; text-transform:uppercase; letter-spacing:.05em; padding-bottom:10px; border-bottom:2px solid #e5e7eb; margin-bottom:16px; }\n.flexa-desc .desc-service-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }\n.flexa-desc .desc-service-card { border-radius:10px; padding:16px; border:1px solid #e5e7eb; }\n.flexa-desc .desc-service-repair { background:#fff7ed; border-color:#fed7aa; }\n.flexa-desc .desc-service-ref { background:#f0fdf4; border-color:#bbf7d0; }\n.flexa-desc .desc-service-new { background:#eff6ff; border-color:#bfdbfe; }\n.flexa-desc .desc-service-label { font-weight:700; font-size:13px; text-transform:uppercase; letter-spacing:.04em; margin-bottom:8px; }\n.flexa-desc .desc-service-repair .desc-service-label { color:#c2410c; }\n.flexa-desc .desc-service-ref .desc-service-label { color:#15803d; }\n.flexa-desc .desc-service-new .desc-service-label { color:#1d4ed8; }\n.flexa-desc .desc-service-body { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-faq-item { margin-bottom:16px; padding:14px 16px; background:#f9fafb; border-radius:8px; border-left:3px solid #e5e7eb; }\n.flexa-desc .desc-faq-item:last-child { margin-bottom:0; }\n.flexa-desc .desc-faq-q { font-weight:700; font-size:14px; color:#111827; margin-bottom:6px; }\n.flexa-desc .desc-faq-a { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-seo { margin-top:24px; padding:14px 16px; background:#f3f4f6; border-radius:8px; font-size:13px; color:#6b7280; line-height:1.6; }\n@media(max-width:640px){ .flexa-desc .desc-service-grid { grid-template-columns:1fr; } }\n\u003c\/style\u003e\n\u003cdiv class=\"flexa-desc\"\u003e\n  \u003cp class=\"desc-intro\"\u003eThe \u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e is a mid-range \u003cstrong\u003eprogrammable logic controller\u003c\/strong\u003e from \u003cstrong\u003eMitsubishi\u003c\/strong\u003e Electric's FX3U series, one of the most extensively deployed compact \u003cstrong\u003ePLC\u003c\/strong\u003e families in industrial automation. Belonging to the third-generation FX platform, this unit combines a high-speed CPU with 80 I\/O points — 40 inputs and 40 relay outputs — housed in a DIN-rail-mountable base unit rated for AC power input. The \u003cstrong\u003e\u003cstrong\u003eMitsubishi\u003c\/strong\u003e \u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e\u003c\/strong\u003e executes basic instructions at 0.065 microseconds per step, with a maximum program capacity of 64,000 steps, giving it substantial headroom for complex ladder logic and structured programs. Relay output configuration makes this model particularly suited for load-switching applications where transistor outputs would introduce unnecessary complexity. As a member of the FX3U family, it supports high-speed counters, pulse outputs, and an onboard USB programming port, positioning it as a capable controller for both standalone machine control and networked automation cells. Its AC power supply input range accommodates the varying line conditions common in manufacturing environments.\u003c\/p\u003e\n  \u003cp class=\"desc-intro\"\u003eDistinguishing the \u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e from sibling models, the relay output designation separates it from the FX3U-80MT\/ES-A transistor variants — relay contacts handle a broader spectrum of load types including resistive, inductive, and lamp loads without additional interface hardware. The 80-point I\/O count places it above the FX3U-48M and FX3U-64M base units while remaining expandable via FX3U extension modules, allowing point counts to scale up to 256 I\/O when the application demands it. The \u003cstrong\u003e\u003cstrong\u003eMitsubishi\u003c\/strong\u003e \u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e\u003c\/strong\u003e integrates natively with \u003cstrong\u003eMitsubishi\u003c\/strong\u003e's CC-Link, PROFIBUS, and Ethernet communication adapters through left-side expansion connectors, and is fully programmable via GX Works2 and GX Works3 software. This unit appears regularly in our \u003ca href=\"\/collections\/plc\"\u003e\u003cstrong\u003ePLC\u003c\/strong\u003e repair catalog\u003c\/a\u003e alongside compatible FX3G, FX3GE, and Q-series controllers. Common deployment environments include automotive body-shop transfer lines, bottling and capping machinery, HVAC plant control panels, and textile processing equipment where relay outputs switch motor contactors and solenoid valves directly. The onboard RUN\/STOP switch and LED status indicators simplify field commissioning without requiring a programming device on-site.\u003c\/p\u003e\n  \u003cp class=\"desc-intro\"\u003eField service experience with the \u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e shows that relay contact wear is the most frequently encountered failure mode in high-cycle applications, particularly on output channels switching inductive loads without suppression circuits — contact pitting and welding appear after sustained operation in conveyor and press control installations. The 5V internal power supply rail is another known wear point; capacitor degradation over time can cause erratic program execution or failure to power connected I\/O extension modules. Units operating in foundries, cement plants, or anywhere with elevated airborne particulate frequently develop contamination on the relay PCB that accelerates contact resistance issues. Operators sourcing an \u003cstrong\u003e\u003cstrong\u003eFX3U-80MR\/ES-A\u003c\/strong\u003e replacement\u003c\/strong\u003e after an unplanned failure should verify the output type designation carefully, as relay and transistor base units are not interchangeable without wiring modifications. Those looking to \u003cstrong\u003ebuy FX3U-80MR\/ES-A\u003c\/strong\u003e stock — whether new or \u003cstrong\u003eFX3U-80MR\/ES-A \u003cstrong\u003erefurbished\u003c\/strong\u003e\u003c\/strong\u003e — should confirm firmware compatibility with existing GX Works project files before installation. Our \u003ca href=\"\/pages\/mitsubishi-repair\"\u003e\u003cstrong\u003eMitsubishi\u003c\/strong\u003e \u003cstrong\u003ePLC\u003c\/strong\u003e repair\u003c\/a\u003e team evaluates each unit for contact condition, power supply integrity, and CPU health prior to return. For a full overview of restoration options, visit our \u003ca href=\"\/pages\/plc-repair\"\u003e\u003cstrong\u003ePLC\u003c\/strong\u003e repair services\u003c\/a\u003e page. \u003cstrong\u003eFlexa Systems\u003c\/strong\u003e offers \u003cstrong\u003eFX3U-80MR\/ES-A repair\u003c\/strong\u003e, \u003cstrong\u003erefurbished\u003c\/strong\u003e FX3U-80MR\/ES-A units, or new FX3U-80MR\/ES-A from Lewisville TX — repairs include a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border-radius:8px;overflow:hidden;border:1px solid #e5e7eb;\"\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003eFX3U-80MR\/ES-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003eMitsubishi\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eService Options\u003c\/div\u003e\n  \u003cdiv class=\"desc-service-grid\"\u003e\n    \u003cdiv class=\"desc-service-card desc-service-repair\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRepair Service\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eShip your faulty FX3U-80MR\/ES-A to our facility. Our certified technicians perform processor diagnostics, I\/O module testing, firmware verification, and rack-level functional testing. Typical turnaround: 5–7 business days. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-ref\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRefurbished\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eIn-stock Mitsubishi FX3U-80MR\/ES-A PLC module, reconditioned to OEM specifications and verified under load. Ships immediately. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-new\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eBrand New\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eNew FX3U-80MR\/ES-A in original Mitsubishi packaging. Full manufacturer warranty applies. Contact us to confirm availability and lead time.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"desc-seo\"\u003eFlexa Systems provides Mitsubishi FX3U-80MR\/ES-A PLC repair, refurbished stock, and new units — all tested and warranted for 2 years. Our technicians are experienced with Mitsubishi control architectures. Nationwide service from Lewisville, TX.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi","offers":[{"title":"Repair Service","offer_id":53853097689363,"sku":"2100000003167","price":210.0,"currency_code":"USD","in_stock":true},{"title":"Refurbished","offer_id":53854139285779,"sku":"2100000003167","price":350.0,"currency_code":"USD","in_stock":true},{"title":"Brand New","offer_id":53854139318547,"sku":"2100000003167","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/1948\/5715\/files\/5e6ff5c11c2b44f0ab20f1af8d4fe518_default.jpg?v=1771751595","url":"https:\/\/flexa-systems.com\/products\/fx3u-80mres-a","provider":"Flexa Systems","version":"1.0","type":"link"}