{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7138-4FA03-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7138-4FA03-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7138-4FA03-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4FA03-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP, ET200S fail-safe digital input module, 6ES7138-4FA03-0AB0, 8 inputs (4 two-channel), 24 V DC, 30 mm width, PROFIsafe, SIL 3 / Cat. 4.","salesMarkdown":"## Fail-safe input module for ET200S, 30 mm, SIL 3 The Siemens 6ES7138-4FA03-0AB0 is a fail-safe digital input module for the ET200S distributed I/O system, delivering 8 inputs configurable as 8 single-channel or 4 two-channel with PROFIsafe communication. Rated SIL 2 (single-channel) and SIL 3 (two-channel) per IEC 61508, and Category 3 (single-channel) / Category 4 (two-channel) per EN 954 — the two-channel wiring path is what gets you to the highest safety integrity for emergency-stop and light-curtain circuits. The module draws 300 mA from the backplane bus and dissipates 4 W typ — within the ET200S power budget for a 30 mm slice in a mixed I/O rack. ## Input characteristics and wiring constraints Signal '1' threshold is +15 to +30 V with a typical sink current of 3.7 mA; signal '0' is -30 to +5 V. The module does not accept 2-wire proximity sensors — it expects a separate 24 V DC supply for the field loop. Input filtering is parameterizable: the '0' to '1' transition can be set between 0.3 ms and 17 ms, same for '1' to '0'. For a fast safety reaction (e.g., light curtain), set the minimum debounce; for noisy environments, the 17 ms filter avoids nuisance trips. Maximum cable length is 200 m for both shielded and unshielded runs — the limiting factor is the voltage drop on the 24 V supply, not the signal integrity. Each output channel is electronically short-circuit protected with a response threshold between 0.7 A and 1.8 A — it will trip before the backplane fuse blows. ## Physical integration and diagnostics Diagnostics are reported via the group error SF (red) LED and the backplane bus — the module signals a group fault to the safety CPU, which then identifies the failing channel through PROFIsafe telegrams. Channel-to-channel isolation is present between channels and the backplane bus, but not between channels and load voltage L+ — so a short from L+ to a channel input will not propagate to adjacent channels.","metaTitle":"Siemens 6ES7138-4FA03-0AB0, ET200S F-DI 4/8 PROFIsafe, 30 mm","metaDescription":"Siemens 6ES7138-4FA03-0AB0 ET200S fail-safe digital input module. 8 inputs, 4 two-channel, SIL 3 / Cat. 4. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"Depth":"52 mm","Width":"30 mm","Height":"81 mm","Inputs":"6 byte","Outputs":"4 byte","Rated value":"300 mA","2-Wire Sensor":"No","For Signal \"0\"":"-30 to +5 V","For Signal \"1\"":"+15 to +30 V","Shielded, Max.":"200 m","acc. to EN 954":"Cat. 3 (single-channel), Cat. 4 (two-channel)","Parameterizable":"Yes","Weight, approx.":"78 g","lifecycle_stage":"current","Power loss, typ.":"4 W","Rated value (DC)":"24 V","Unshielded, Max.":"200 m","Number of outputs":"2","At \"0\" To \"1\", Max.":"17 ms","At \"0\" To \"1\", Min.":"0.3 ms","At \"1\" To \"0\", Max.":"17 ms","At \"1\" To \"0\", Min.":"0.3 ms","Between The Channels":"No","Diagnostics function":"Yes","For Signal \"1\", Typ.":"3.7 mA","Group error SF (red)":"Yes","SIL acc. to IEC 61508":"SIL 2 (single-channel), SIL 3 (two-channel)","Type of output voltage":"min. L+ (-1.5 V)","Number of digital inputs":"8; 8 single channel, 4 two-channel","Short-circuit protection":"Yes; Electronic (response threshold 0.7 A to 1.8 A)","Reverse polarity protection":"No","Permissible Range, Lower Limit":"0 mA","Permissible Range, Upper Limit":"300 mA","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes","Between the channels and load voltage L+":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$66.66 – $140.97","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5444c2a6d45e12e1a825e1259ff12c7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=427791&mlfb=6ES7138-4FA03-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4FA03-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Is 6ES7138-4FA03-0AB0 compatible with IM151-3 PN?","answer":"Yes, the module is explicitly stated as usable in PROFINET networks with the IM151-3 HF interface module, per the manufacturer description."},{"question":"How many digital inputs does 6ES7138-4FA03-0AB0 have?","answer":"It has 8 digital inputs, configurable as 8 single-channel or 4 two-channel. Two-channel mode pairs inputs for redundant sensing."},{"question":"What is the width of Siemens 6ES7138-4FA03-0AB0?","answer":"The module is 30 mm wide, 52 mm deep, and 81 mm high — it occupies one standard ET200S slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7138-4FA03-0AB0","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/6ES7138-4FA03-0AB0 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}}