{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"K8AC-H21CN-FLK","brand":"Omron","brandSlug":"omron","productSlug":"K8AC-H21CN-FLK","canonicalUrl":"https://aoctrl.com/omron/K8AC-H21CN-FLK","factsUrl":"https://aoctrl.com/api/mcp/products/K8AC-H21CN-FLK","rawCanonicalId":null},"summary":{"shortDescription":"Omron K8AC-H series, Heater Element Detector, order code K8AC-H21CN-FLK, input range 0.20 ~ 2.20A, RS-485 communications, DIN rail mount, 85 ~ 264VAC supply.","salesMarkdown":"## Heater Current Monitor on DIN Rail The Omron K8AC-H21CN-FLK is a dedicated heater element detector from the K8AC-H series, designed to monitor heater current and signal a fault when the draw falls outside the set range. The input range spans 0.20 ~ 2.20 A, which covers small to moderate heater loads typical in injection molding, packaging seal bars, and process ovens. The two solid-state outputs provide isolated fault signalling to a PLC or alarm annunciator. ## RS-485 and Supply Voltage Communications are handled via RS-485 using the CompoWay/F protocol, so the unit can report heater current values and fault status back to a host controller over a multi-drop network. The supply voltage accepts 85 ~ 264 VAC, covering both 100 V and 200 V class mains without a separate transformer tap. Termination is via spring terminals — no screw tightening, which speeds wiring and holds firm under vibration. The 4-digit red LED display shows the measured current value in real time, readable from a few metres away on the panel door. ## Active Production — Sourced per RFQ","metaTitle":"Omron K8AC-H21CN-FLK Heater Element Detector","metaDescription":"Omron K8AC-H21CN-FLK heater element detector, DIN rail mount, 0.20~2.20A input range, RS-485 CompoWay/F, 85~264VAC. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Type":"Heater Element Detector","title":"K8AC-H21CN-FLK","Series":"K8AC-H","Weight":"0.441 lb (200.03 g)","Package":"Bulk","Features":"Heater Fault Detection","Input Range":"0.20 ~ 2.20A","Output Type":"Solid State (2)","description":"Omron K8AC-H21CN-FLK Process, Temperature — now discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.","Display Type":"LED - Red Characters","Mounting Type":"DIN Rail","Communications":"RS-485 (CompoWay/F)","Control Method":"On/Off","lifecycle_stage":"current","Voltage - Supply":"85 ~ 264VAC","Termination Style":"Spring Terminal","Operating Temperature":"-10°C ~ 55°C","Number of Characters Per Row":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the input range of K8AC-H21CN-FLK?","answer":"The input range is 0.20 ~ 2.20 A. This covers small to moderate heater loads; the detector triggers a fault when the measured current falls outside the set threshold."},{"question":"Does K8AC-H21CN-FLK have RS-485 communication?","answer":"Yes, it communicates via RS-485 using the CompoWay/F protocol, allowing multi-drop reporting of current values and fault status to a host controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/K8AC-H21CN-FLK","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/K8AC-H21CN-FLK 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}}