{"product_id":"fx3sa-20mr-cm-mitsubishi-electric-plc-20-i-o-relay-controller","title":"FX3SA-20MR-CM Mitsubishi Electric PLC | 20 I\/O Relay Controller","description":"\u003ch2\u003e\u003cstrong\u003eMitsubishi Electric FX3SA-20MR-CM Programmable Logic Controller\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mitsubishi Electric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong style=\"color: #0066cc;\"\u003eFX3SA-20MR-CM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Programmable Logic Controller (PLC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal I\/O Points:\u003c\/strong\u003e 20 points (12 inputs, 8 outputs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Form:\u003c\/strong\u003e Relay output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e AC100-240V, 50-60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 20W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 75 x 90 x 75 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.4 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory:\u003c\/strong\u003e 8000-step EPROM (no battery required, maintenance-free)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Support:\u003c\/strong\u003e MODBUS RTU, Ethernet-ready via expansion board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Counter:\u003c\/strong\u003e Built-in with adjustable digital filter (minimum 1ms response)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Filter Adjustment:\u003c\/strong\u003e Smooth input signals for X000 to X017 with adjustable filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 55°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -20°C to 70°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity Tolerance:\u003c\/strong\u003e 10% to 90% RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Immunity:\u003c\/strong\u003e Built-in anti-jitter filter and surge protection on inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClock Function:\u003c\/strong\u003e Built-in real-time clock standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassword Protection:\u003c\/strong\u003e 8-digit password secures your program\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance \u0026amp; Core Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact yet powerful:\u003c\/strong\u003e The \u003cstrong style=\"color: #0066cc;\"\u003eFX3SA-20MR-CM\u003c\/strong\u003e fits tight panels while providing 20 I\/O points for small equipment control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay output durability:\u003c\/strong\u003e Handles inductive loads like motors, solenoids, and contactors with ease. Each relay supports up to 2A per point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible expansion options:\u003c\/strong\u003e Connect FX2NC expansion modules directly without extra cables. You can expand I\/O up to 60 points total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in high-speed counter:\u003c\/strong\u003e Use simple programming for positioning or frequency measurement. The filter adjusts down to 1ms for precise input capture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog \u0026amp; communication ready:\u003c\/strong\u003e Support analog special adapters and MODBUS communication out of the box. Add Ethernet modules for network integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance-free design:\u003c\/strong\u003e No battery backup required. EPROM memory retains programs reliably over years of operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRUN\/STOP switch:\u003c\/strong\u003e Operate the panel-mounted switch easily without software.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote maintenance:\u003c\/strong\u003e Use modem communications for remote programming, monitoring, and program uploads or downloads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous scanning function:\u003c\/strong\u003e Define operation cycles with continuous scan time for time-critical applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnline program editor:\u003c\/strong\u003e Change programs without losing work hours or stopping production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent annotation:\u003c\/strong\u003e Record notes in program registers for better documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use analog modules with this PLC?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The \u003cstrong\u003eFX3SA-20MR-CM\u003c\/strong\u003e supports analog special adapters for applications needing temperature or pressure monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What software do I need to program it?\u003c\/strong\u003e\u003cbr\u003eA: Use Mitsubishi GX Works2 or GX Developer. Both support the FX3SA series with full instruction sets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this model support MODBUS communication?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. The \u003cstrong\u003eFX3SA-20MR-CM\u003c\/strong\u003e includes built-in MODBUS RTU capability. Add an Ethernet adapter for network connectivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How many I\/O points can I expand to?\u003c\/strong\u003e\u003cbr\u003eA: You can reach up to 60 total I\/O points when combining with FX2N expansion units and special adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the unit battery-free?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The 8000-step EPROM memory eliminates battery maintenance. Your program stays safe without periodic battery changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What shipping methods do you offer?\u003c\/strong\u003e\u003cbr\u003eA: We ship worldwide via \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e for fast and reliable delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the environmental tolerance?\u003c\/strong\u003e\u003cbr\u003eA: The PLC operates from 0°C to 55°C with 10–90% humidity. Built-in noise filters ensure stable performance in industrial settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does it have a real-time clock?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The \u003cstrong\u003eFX3SA-20MR-CM\u003c\/strong\u003e includes a built-in real-time clock standard for time-stamped operations and scheduling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I protect my program with a password?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Use an 8-digit password to secure your program from unauthorized access or modifications.\u003c\/li\u003e\n\u003cp\u003e© 2026 \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.ubestplc.com\/\" target=\"_blank\"\u003eUbest Automation Limited\u003c\/a\u003e. \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.ubestplc.com\/\" target=\"_blank\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e All rights reserved. \u003cbr\u003eContact: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e | Phone: \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/wa.me\/8618030005825?text=Inquiry%20about%20FX3SA-20MR-CM\" target=\"_blank\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/ul\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51872170967322,"sku":"FX3SA-20MR-CM","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/FX3SA-20MR-CM.jpg?v=1774573951","url":"https:\/\/www.ubestplc.com\/products\/fx3sa-20mr-cm-mitsubishi-electric-plc-20-i-o-relay-controller","provider":"Ubest Automation Limited","version":"1.0","type":"link"}