{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FX3U-16MT/ESS","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"FX3U-16MT-ESS","canonicalUrl":"https://aoctrl.com/mitsubishi/FX3U-16MT-ESS","factsUrl":"https://aoctrl.com/api/mcp/products/FX3U-16MT%2FESS","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi MELSEC-F FX3U base unit, 16-point I/O, 8 transistor source outputs, 100-240 VAC supply, expandable to 384 points.","salesMarkdown":"## What you're looking at The FX3U-16MT/ESS is a Mitsubishi MELSEC-F base unit with 8 DC 24 V inputs and 8 transistor source outputs, running on 100-240 VAC. It's part of the FX3U family, a mature platform that's been around long enough to have good documentation and a steady support base. The program memory is 64k steps in RAM, with a buffer battery to hold it, and the unit draws 30 W at the terminals. Cycle times are 65 ns for LD and 642 ns for MOV. Local I/O capacity is 256 points; total with remote is 384 points. The FX5 series (like the FX5-32ET/ES or FX5U-64MT/DS) is the current generation, but don't expect a straight swap. The FX5-32ET/ES has 16 inputs and 16 transistor sink outputs, while the FX3U-16MT/ESS has only 8 of each and uses source outputs. The FX5U-64MT/DS is a different form factor — connector-type terminals versus screw terminals on the FX3U. The mounting footprint and backplane are not compatible, so swapping would mean a full rewire and possibly a new panel layout. ## Wiring and mounting notes The unit is IP10 — open style, requires cabinet installation. AC supply range is 100-240 V; it has 8 transistor source outputs. The RS-422 port is on board for programming or connecting to older HMI units. USB is optional — if you need it, you'll order the option module. The expansion bus lets you add analog, temperature, or additional I/O modules up to the 256-point local limit. The buffer battery keeps the RAM program safe during power downs, but if you leave it off for months, plan to reload the program.","metaTitle":"Mitsubishi FX3U-16MT/ESS PLC, 16 I/O, transistor source, AC","metaDescription":"Mitsubishi FX3U-16MT/ESS base unit, 8 inputs / 8 transistor source outputs, 100-240 VAC. Mature lifecycle; sourced to order against RFQ. Expandable to 384 I/O.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"USB":"OPTION","Type":"FX3U","RS-422":"1","Series":"MELSEC-F SERIES","Weight":"0,6 kg","Expandable":"YES","Output Type":"TRANSISTOR","Current Type":"AC","Manufacturer":"Mitsubishi Electric","Output Logic":"SOURCE","Buffer Battery":"YES","Program Memory":"64K STEPS","Shipping Weight":"2 Kg","lifecycle_stage":"mature","Local I/O Points":"256","Power Supply (V)":"100-240","Protection Class":"IP10","Cycle Time LD (ns)":"65","Cycle Time MOV (ns)":"642","Estimated Lead Time":"1 - 10 Working Days","Program Memory Unit":"RAM","Power Consumption (W)":"30","Integrated Digital Inputs":"8","Local + Remote I/O Points":"384","Integrated Digital Outputs":"8","Max. Ambient Temperature (°C)":"55","Min. Ambient Temperature (°C)":"0","PLC, FX3U Base Unit AC 100-240 V":"8 inputs DC 24 V; 8 transistor outputs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$247.00 – $398.91","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/62425c861097beafbcb87b84e5c6766b.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/FX3U-16MT%2FESS/alternatives.json"},"ai":{"faq":[{"question":"What is the USB option on the FX3U-16MT/ESS?","answer":"USB is listed as an option — it is not standard on the base unit. If your application requires USB connectivity, you will need to add an optional module."},{"question":"What is the type of the FX3U-16MT/ESS?","answer":"It is part of the FX3U series within the MELSEC-F family, a compact PLC platform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/FX3U-16MT-ESS","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/mitsubishi/FX3U-16MT-ESS when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}