{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1421-1BL01-2AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1421-1BL01-2AA0","canonicalUrl":"https://aoctrl.com/siemens/6AG1421-1BL01-2AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1421-1BL01-2AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6AG1421-1BL01-2AA0, 32-channel digital input module, 24 V DC, -40 to 70 °C, 210 mm depth, 25 mm width, 290 mm height.","salesMarkdown":"## 32 inputs, 24 V DC, -40 to 70 °C — the operating envelope The Siemens 6AG1421-1BL01-2AA0 is a 32-channel digital input module that sinks 7 mA typical per channel at 24 V DC. The signal-1 threshold is 13 V DC to 30 V DC, with a signal-0 range of -30 V DC to +5 V DC. Input filtering is symmetrical: 1.2 ms to 4.8 ms for both rising and falling edges. The 6 W typical power loss is low enough that adjacent modules in a dense row won't force derating. ## NRND — plan the BOM transition now This module carries a lifecycle status of NRND (Not Recommended for New Designs). It remains available through independent distribution while channel stock lasts, but new projects should evaluate the current-production successor. For a like-for-like 32-channel 24 V DC input module in the current S7-1500 portfolio, the closest functional equivalent is the standard 6ES7521-1BL10-0AA0 — confirm backplane compatibility and form factor before substituting. ## Panel fit and wiring constraints The module measures 25 mm wide by 290 mm tall by 210 mm deep, fitting a standard S7-1500 slot. The 32 inputs are isolated as one group of 32, with isolation between channels and the backplane bus tested at 500 V DC. No channel-to-channel isolation means all inputs share a common reference — plan the field wiring accordingly. Supports 2-wire sensors with a permissible quiescent current up to 1.5 mA. The signal-0 threshold allows up to 1.3 mA quiescent, so proximity sensors with a residual leakage below that value will read reliably as off.","metaTitle":"Siemens 6AG1421-1BL01-2AA0 32-Channel DI, -40 to 70°C","metaDescription":"Siemens 6AG1421-1BL01-2AA0 digital input module, 32 channels, 24 V DC, -40 to 70 °C range. NRND — sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Industrial PCs"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"210 mm","Width":"25 mm","Height":"290 mm","2-Wire Sensor":"Yes","For Signal \"0\"":"-30 V DC to +5 V DC","For Signal \"1\"":"13 V DC to 30 V DC","Shielded, Max.":"1 000 m","Weight, approx.":"500 g","lifecycle_stage":"current","Power loss, typ.":"6 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","At \"0\" To \"1\", Max.":"4.8 ms","At \"0\" To \"1\", Min.":"1.2 ms","At \"1\" To \"0\", Max.":"4.8 ms","At \"1\" To \"0\", Min.":"1.2 ms","Between The Channels":"No","Diagnostics function":"No","For Signal \"1\", Typ.":"7 mA","Isolation tested with":"500 V DC","Type of input voltage":"DC","Number of digital inputs":"32","from backplane bus 5 V DC, max.":"20 mA","Between The Channels, In Groups Of":"32","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes","Installation altitude above sea level, max.":"5 000 m","Number of simultaneously controllable inputs":"32","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)","For Signal \"0\", Max. (Permissible Quiescent Current)":"1.3 mA","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)","Qualification and Performance of Electrical Insulating Compound for Printed Board Assemblies according to IPC-CC-830A":"Yes; Conformal coating, Class A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$459.74","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=32874&mlfb=6AG1421-1BL01-2AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1421-1BL01-2AA0/alternatives.json"},"ai":{"faq":[{"question":"Is 6AG1421-1BL01-2AA0 obsolete?","answer":"The 6AG1421-1BL01-2AA0 is classified as NRND (Not Recommended for New Designs). It is not yet fully discontinued but is in phase-out — remaining channel stock is the supply path."},{"question":"What is the replacement for Siemens 6AG1421-1BL01-2AA0?","answer":"No direct official successor order code is published. For a current-production 32-channel 24 V DC input module in the S7-1500 family, the 6ES7521-1BL10-0AA0 is the closest functional match — verify the form factor and backplane compatibility before ordering."},{"question":"Where can I buy 6AG1421-1BL01-2AA0 and get a price?","answer":"Sourced through independent distribution against an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1421-1BL01-2AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6AG1421-1BL01-2AA0 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}}