{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E5EC-PR2ASM-804","brand":"Omron","brandSlug":"omron","productSlug":"E5EC-PR2ASM-804","canonicalUrl":"https://aoctrl.com/omron/E5EC-PR2ASM-804","factsUrl":"https://aoctrl.com/api/mcp/products/E5EC-PR2ASM-804","rawCanonicalId":null},"summary":{"shortDescription":"Omron E5EC series process/temperature controller, 4 relay outputs, RS-485 CompoWay/F Modbus, 100-240VAC supply, IP66 front panel, panel mount 92x45mm cutout.","salesMarkdown":"## What this controller brings to a panel The Omron E5EC-PR2ASM-804 is a 1/16 DIN process and temperature controller that accepts RTD and thermocouple types B, E, J, K, L, N, PLII, R, S, T, U, W, plus 0-20mA or 0-10VDC analog signals. Four relay outputs give you separate control of heating, cooling, alarm, and event functions without adding external interposing relays for most loads up to the relay contact rating. The RS-485 port speaks both CompoWay/F and Modbus protocols, so it drops into existing plant networks without a protocol converter. Panel cutout is 92.00mm x 45.00mm — the standard 1/16 DIN footprint that fits existing punch patterns on retrofit jobs. The IP66-rated front bezel handles washdown and dust exposure common in food, beverage, and chemical processing lines; the screw-terminal rear stays inside the enclosure. ## Control loop and programming On/off or proportional (PID) control method with auto-tune — set it for simple thermostat duty or let it self-optimize for thermal process loops like extruder barrels or oven zones. The dual-color LCD backlight shows process value and setpoint simultaneously; the 18.00mm upper and 11.00mm lower characters are readable from across a machine cell. Event input on the screw terminals lets an external contact or PLC digital output trigger a pre-programmed setpoint change or control mode switch — useful for recipe changes or standby mode.","metaTitle":"Omron E5EC-PR2ASM-804 Process Controller, 4 Relay, RS-485","metaDescription":"Omron E5EC-PR2ASM-804 process/temperature controller with 4 relay outputs, RS-485 Modbus, IP66 front. Active production, sourced per RFQ.","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":"Bulk","Features":"Event Input","Input Range":"-200°C ~ 2300°C, 0 ~ 20mA, 0 ~ 10VDC","Output Type":"Relay (4)","Display Type":"LCD - Dual 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)","Number of Characters Per Row":"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-PR2ASM-804/alternatives.json"},"ai":{"faq":[{"question":"Does the E5EC-PR2ASM-804 support Modbus RTU communication?","answer":"Yes, the RS-485 port supports Modbus (RTU mode) as well as Omron's CompoWay/F protocol, so it integrates with most PLCs and SCADA systems without a gateway."},{"question":"How do I wire the E5EC-PR2ASM-804 for temperature control?","answer":"The screw-terminal rear accepts the sensor (RTD or thermocouple per the selected input type), the 100-240VAC supply, and up to four relay output loads. The RS-485 A/B terminals connect to the network. The event input terminals accept a dry contact or 24VDC signal for setpoint switching."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E5EC-PR2ASM-804","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-PR2ASM-804 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}}