{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FX3U-4LC","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"FX3U-4LC","canonicalUrl":"https://aoctrl.com/mitsubishi/FX3U-4LC","factsUrl":"https://aoctrl.com/api/mcp/products/FX3U-4LC","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi FX3U-4LC Temperature Control Block, 4 inputs, PID/cascade/heating-cooling, 250 ms/4ch cycle, powered from FX3U main unit.","salesMarkdown":"## What this block does and what it demands from your FX3U rack The FX3U-4LC is a dedicated 4-channel temperature controller that rides the FX3U backplane, consuming 8 I/O points from either input or output budget. It handles two-position, PID, heating/cooling PID, or cascade control with a control period of 250 ms per all four channels. Power comes from two rails: 160 mA at 5 V DC drawn from the main unit via the backplane, plus an external 24 V DC supply (rated +20% / -15%) at 50 mA for the loop interface driving the sensors and actuators on the terminal block. A built-in EEPROM stores parameters – rated for 100.000 write cycles – so setpoint and PID values survive power loss without a battery. They are not drop-in interchangeable. The FX3U-4LC expects an FX3U base unit and its 5 V backplane power draw; the FX5 variant connects to the FX5 system bus and has different terminal layout. A panel specified for FX5-4LC would require adapter wiring and a programming migration.","metaTitle":"Mitsubishi FX3U-4LC Temperature Control Block, 4 Inputs","metaDescription":"FX3U-4LC temperature control block for FX3U PLC. 4 PID/cascade loops, 250ms cycle. Mature lifecycle – still orderable. RFQ for lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"title":"FX3U-4LC","Memory":"Built-in EEPROM (Number of times of overwrite : 100.000 times)","Weight":"0.4 Kg","Product No.":"FX3U-4LC","description":"Temperature Control Blocks","Product type":"Temperature Control Blocks","Control method":"Two-position control, PID control, Heating/cooling PID control, Cascade control","Shipping weight":"1.5 Kg","lifecycle_stage":"mature","CPU driving power":"5V DC 160mA 5V DC power is supplied internally from the main unit.","Estimated Lead Time":"1 - 10 Working Days","Number of input points":"4 points","Control operation period":"250ms/4ch","Number of I/O occupied points":"8 points (Taken from either the input or output points of the PLC.)","Heater disconnection detection":"Alarm is detected by buffer memory (Variable within range from 0.0 to 100.0A.)","Interface driving power supply":"24V DC +20% -15% 50mA Connect a 24V DC power supply to the terminal block."}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$288.00 – $457.45","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8c1b1d3b1d07a3fb50bb5499e39b14c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is FX3U-4LC's listed weight?","answer":"The module weighs 0.4 kg (shipping weight 1.5 kg)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/FX3U-4LC","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-4LC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}