{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VW3A3E304","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"VW3A3E304","canonicalUrl":"https://aoctrl.com/schneider/VW3A3E304","factsUrl":"https://aoctrl.com/api/mcp/products/VW3A3E304","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric VW3A3E304 Interbus communication card, Altivar series, 9-way male and female SUB-D connectors, LED status indicators.","salesMarkdown":"The Schneider Electric VW3A3E304 is an Interbus communication card for Altivar drives, providing a fieldbus interface via dual 9-way SUB-D connectors — one male, one female — for daisy-chain wiring on the Interbus network. ## Power supply note The card draws power from the drive when the inverter is powered. If the drive is off, an external 24 V supply is needed to keep the bus interface alive — this matters during commissioning or when the drive is isolated but the network must stay up. ## Status indicators Five LEDs on the card face give at-a-glance status: BA for periodic data traffic, RC for bus input, Rd for bus output, TR for messaging, and U for power supply. A graphic display terminal also shows control word and reference word received — useful for fault isolation without a laptop.","metaTitle":"Schneider Electric VW3A3E304 Interbus Communication Card, 9-","metaDescription":"Schneider Electric VW3A3E304 Interbus communication card for Altivar drives. Dual 9-way SUB-D connectors, LED status indicators. Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"title":"VW3A3E304","Supply":"By drive but necessary to use an external supply if the inverter is not powered","description":"Interbus communication card, Altivar, 9 way male and 9 way female sub D connector","Display type":"1 LED for BA (periodic data) 1 LED for RC (bus input) 1 LED for Rd (bus output) 1 LED for TR (messaging) 1 LED for U (power supply) Graphic display terminal for control word received Graphic display terminal for reference received","Connector type":"9-way female SUB-D connector 9-way male SUB-D connector","lifecycle_stage":"mature","Communication service":"Communication monitoring I/O data Abort communication relationship Communication and drive status Identification of the card Initialize communication relationship Profile 21 Read object description Read parameter Write parameter","Product or component type":"Communication card","Communication port protocol":"Interbus"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7b82d41a94adaeeda4e8911fa1dc726d.pdf","sourceUrl":"https://www.se.com/sg/en/product/VW3A3E304/interbus-communication-card/"},"ai":{"faq":[{"question":"Where can I buy VW3A3E304 and how do I get a price?","answer":"The VW3A3E304 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is VW3A3E304's listed supply requirement?","answer":"The card is powered by the drive when the inverter is on; if the inverter is not powered, an external supply must be used."},{"question":"What status indicators does the VW3A3E304 have?","answer":"Five LEDs indicate BA (periodic data), RC (bus input), Rd (bus output), TR (messaging), and U (power supply). A graphic display terminal also shows control word and reference word received."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/VW3A3E304","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/VW3A3E304 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}