{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VW3AP3420","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"VW3AP3420","canonicalUrl":"https://aoctrl.com/schneider/VW3AP3420","factsUrl":"https://aoctrl.com/api/mcp/products/VW3AP3420","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Altivar VW3AP3420, digital encoder interface module, EnDat 2.2 / SSI / A/B/I incremental, 1× female high-density SUB-D 15, 5–24 VDC supply, 1000 kHz max frequency.","salesMarkdown":"## What it handles — encoder types and signal lines The VW3AP3420 is a digital encoder interface module in the Altivar drive family, designed to connect incremental (A/B/I) and absolute (SSI, EnDat 2.2) encoders to the drive control board. It accepts EnDat 2.2 bidirectional data (Data+/Data-, Clock+/Clock-), SSI clock/data lines, and standard quadrature A+/A-, B+/B-, I+/I- plus temperature sensor inputs (Temp+/Temp-). One female high-density SUB-D 15 connector carries all signals. Maximum operating frequency is 1000 kHz, so it handles high-resolution encoder feedback for precision speed or position loops on servo and closed-loop induction motors. ## Supply voltage and current draw The module is powered from the encoder supply, not the drive backplane — three voltage ranges are supported: 5 VDC (4.75–5.25 V limits), 12 VDC (11.4–12.6 V), and 24 VDC (22.8–25.2 V). Maximum current draw is 0.25 A at 5 V, 0.1 A at 12 V, and 0.05 A at 24 V. The 121 Ω input impedance is fixed for the differential line receivers. Overload and short-circuit protection are built into the interface, so a faulted encoder cable won't take out the drive's encoder supply channel. ## Cable distance limits by protocol Maximum cable length between the encoder and the module depends on the protocol and speed: 100 m for A/B/I incremental, 100 m for EnDat 2.2 with propagation delay compensation enabled, 100 m for SSI at 300 kHz, or 50 m for SSI at full speed and 50 m for EnDat 2.2 without compensation. The 1000 kHz limit applies to the A/B/I incremental channel. ## Sourcing note — not a standalone part Lifecycle status is active per Schneider's current listing — the module is still in regular production. One important procurement constraint: the VW3AP3420 cannot be ordered alone; it is only available in combination with a standard Altivar enclosure (i.e. as part of a drive order or as a field-installed option kit bundled with the drive).","metaTitle":"VW3AP3420 Altivar Encoder Interface, EnDat/SSI, 1000 kHz","metaDescription":"Altivar VW3AP3420 digital encoder interface module supports EnDat 2.2, SSI, and A/B/I incremental encoders. Rated 1000 kHz, SUB-D15, 5-24 VDC. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"title":"VW3AP3420","description":"digital encoder interface module, Altivar, 5 to 24V, 1 female high density SUB D15 connector","Encoder type":"EnDat 2.2 A/B/I incremental XCC1 type R A/B/I incremental XCC1 type X SSI absolute encoder XCC2 type SG SSI absolute encoder XCC3 type SB","Input signal":"Data+, Data- (EnDat 2.2) Data+, Data- (SSI) Temp+, Temp- A+,A-/B+,B-/I+,I- (A/B/I)","Output signal":"Clock+, Clock- (SSI) Data+, Data-, Clock+, Clock- (EnDat 2.2)","Connector type":"1 female high density SUB-D 15","Input impedance":"121 Ohm","Protection type":"Overload protection Short-circuit protection","lifecycle_stage":"mature","Condition of use":"Cannot be ordered alone, only possible in combination with a standard enclosure","Range of product":"Altivar","Maximum supply current":"0.25 A at 5 V DC 0.1 A at 12 V DC 0.05 A at 24 V DC","Product or component type":"Digital encoder interface module","[Us] rated supply voltage":"5 V DC (voltage limits: 4.75...5.25 V) 12 V DC (voltage limits: 11.4...12.6 V) 24 V DC (voltage limits: 22.8...25.2 V)","Maximum operating frequency":"1000 kHz","Maximum cable distance between devices":"100 m (A/B/I) 50 m (SSI) 100 m (SSI)at 300 kHz 50 m (EnDat 2.2) 100 m (EnDat 2.2)with propagation delay compensation"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0069335ef11835a5c00eda290963789a.pdf","sourceUrl":"https://www.se.com/ae/en/product/VW3AP3420/digital-encoder-interface-module-altivar-5-to-24v-1-female-high-density-sub-d15-connector/"},"ai":{"faq":[{"question":"What encoder types does VW3AP3420 support?","answer":"It supports EnDat 2.2 bidirectional, SSI absolute, and A/B/I incremental encoders. The specific encoder models listed are XCC1 type R (A/B/I incremental), XCC1 type X (A/B/I incremental), XCC2 type SG (SSI absolute), and XCC3 type SB (SSI absolute)."},{"question":"What is the maximum cable length for VW3AP3420?","answer":"100 m for A/B/I incremental and for EnDat 2.2 with propagation delay compensation; 100 m for SSI at 300 kHz; 50 m for SSI at full speed and for EnDat 2.2 without compensation."},{"question":"Where can I buy VW3AP3420 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. Note that the module cannot be ordered alone — it must be combined with a standard Altivar enclosure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/VW3AP3420","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/VW3AP3420 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}}