{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E5EC-QR4A5M-009","brand":"Omron","brandSlug":"omron","productSlug":"E5EC-QR4A5M-009","canonicalUrl":"https://aoctrl.com/omron/E5EC-QR4A5M-009","factsUrl":"https://aoctrl.com/api/mcp/products/E5EC-QR4A5M-009","rawCanonicalId":null},"summary":{"shortDescription":"Omron E5EC series process/temperature controller, relay (5) and voltage (external SSR) outputs, RS-485 CompoWay/F Modbus, 100-240 VAC supply, IP66 front panel, active.","salesMarkdown":"## What this controller does in a panel The Omron E5EC-QR4A5M-009 is a panel-mount process and temperature controller from the E5EC series, handling RTD and thermocouple inputs (types B, E, J, K, L, N, PLII, R, S, T, U, W) plus 0–20 mA and 0–10 VDC linear signals. That range — -200°C to 2300°C for temperature, plus the analog inputs — means it covers everything from cryogenic monitoring to high-temp furnace control on a single part number. The control method switches between On/Off and proportional (PID), so it fits both simple limit alarms and closed-loop regulation. Five relay outputs handle on-off switching, while the voltage output drives an external SSR for solid-state power control — no separate SSR driver module needed on the DIN rail. Communication is RS-485 with both CompoWay/F and Modbus protocols on board. That means it talks directly to a PLC or SCADA without a protocol converter — just wire the screw terminals to the bus. The IP66 front-panel rating means it withstands washdown in food, beverage, or chemical processing environments; the unit is dust-tight and water-resistant, so a hose-down during line cleaning won't kill the display or the electronics behind the bezel. ## Mounting and wiring — what fits in the cutout Mounting is panel-mount only — no DIN-rail clip on this one. The required panel cutout is rectangular, 92.00 mm x 45.00 mm, which is the standard 1/4 DIN footprint. Screw terminals for all connections: power, sensor input, relay outputs, voltage output, and the RS-485 bus. Wire it up with 0.2–2.5 mm² stranded or solid; torque to the terminal block specs in the manual. The tri-color LCD backlight gives three display lines at 4 characters each, with character heights of 18.00 mm, 11.00 mm, and 7.80 mm — the top line is readable from across a panel.","metaTitle":"Omron E5EC-QR4A5M-009 Temperature Controller, 100-240VAC","metaDescription":"Omron E5EC-QR4A5M-009 process controller with relay (5) and voltage output. Active production. RS-485 Modbus. IP66 front panel. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Type":"Process, Temperature Controller (RTD, Type B, E, J, K, L, N, PLII, R, S, T, U, W)","Series":"E5EC","Weight":"0.463 lb (210.01 g)","Package":"Box","Features":"Event Input, Heater Fault Detection","Input Range":"-200°C ~ 2300°C, 0 ~ 20mA, 0 ~ 10VDC","Output Type":"Relay (5), Voltage (External SSR)","Display Type":"LCD - Tri Color Characters, Backlight","Mounting Type":"Panel Mount","Communications":"RS-485 (CompoWay/F, Modbus)","Control Method":"On/Off, Proportional (PID)","lifecycle_stage":"current","Voltage - Supply":"100 ~ 240VAC","Termination Style":"Screw Terminal","Ingress Protection":"IP66 - Dust Tight, Water Resistant","Operating Temperature":"-10°C ~ 55°C","Panel Cutout Dimensions":"Rectangular - 92.00mm x 45.00mm","Display Characters - Height":"0.710\" (18.00mm), 0.433\" (11.00mm), 0.307\" (7.80mm)","Number of Characters Per Row":"4, 4, 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c6d2565f7c49acd020a74c22dc4212b3.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/E5EC-QR4A5M-009/alternatives.json"},"ai":{"faq":[{"question":"Does E5EC-QR4A5M-009 support Modbus RTU communication?","answer":"Yes, it supports Modbus RTU over RS-485, alongside Omron's CompoWay/F protocol. Both are available through the same screw-terminal RS-485 port."},{"question":"What is the input range for E5EC-QR4A5M-009?","answer":"For temperature sensors the range is -200°C to 2300°C depending on the probe type. For linear signals it accepts 0 ~ 20 mA or 0 ~ 10 VDC. That covers the vast majority of process transmitters and temperature probes used in industrial control."},{"question":"What is the difference between E5EC-QR4A5M-009 and E5EC-QX4A5M-009?","answer":"The difference is the output count: the QR4A5M-009 has five relay outputs, while the QX4A5M-009 has four relay outputs. Both have the same voltage output for an external SSR, the same RS-485 Modbus, same 100-240 VAC supply, and same IP66 front panel. The extra relay on the QR variant gives you one more discrete control or alarm output without adding a separate relay module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E5EC-QR4A5M-009","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/E5EC-QR4A5M-009 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}}