{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1138-4FB04-2AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1138-4FB04-2AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1138-4FB04-2AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1138-4FB04-2AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS ET 200S, F-DQ safety output module, 4 digital transistor outputs, 24 V DC, SIL 3 / Cat. 4, rated -25 to 60 °C, 4 A per channel.","salesMarkdown":"## Safety output module for harsh environments The Siemens 6AG1138-4FB04-2AB0 is a SIPLUS variant of the ET 200S F-DQ safety output module, built to survive the same crusher vibration and abrasive dust that kills standard electronics. It carries SIL 3 per IEC 61508 and Category 4 per EN 954-1, so it is rated for safety functions that demand fault-tolerant shutdown — think emergency-stop circuits, guard-door monitoring, or press-brake control in a mill. Four transistor outputs, each rated 4 A up to 40 °C and 5 A up to 55 °C, with a module total of 6 A max. That means you can drive contactors or solenoid valves directly without an interposing relay, as long as the load current per channel stays inside the thermal limit. ## Wiring and fault detection in the panel Snaps onto the ET 200S DIN-rail profile — the 30 mm width leaves room for adjacent I/O slices in a crowded enclosure. Wiring is screw terminal; the 24 V DC load supply feeds the module separately from the backplane bus, which draws 28 mA max at 3.3 V DC. Built-in wire-break detection (lower limit 12 Ω, upper limit 1 kΩ) and short-circuit detection let the module flag a failed field connection before the safety function is compromised. The group error SF (red LED) pulls the diagnostics bus — the PLC sees the fault without scanning each channel. ## Thermal limits and cable runs The output current derates at the high end: 4 A at 60 °C, same as at 40 °C, but the 55 °C point allows 5 A — so if the cabinet runs hot but stays under 55 °C, you get the extra amp per channel. Cable runs up to 500 m shielded or unshielded — long enough to reach field actuators across a conveyor line or a processing floor. Typical power loss is 3.5 W, manageable without forced cooling in a standard IP20 cabinet.","metaTitle":"Siemens 6AG1138-4FB04-2AB0 SIPLUS ET 200S F-DQ, SIL 3, 4 DO","metaDescription":"Siemens SIPLUS ET 200S F-DQ safety output module, 4 digital outputs, SIL 3 / Cat. 4, 24 V DC, 4 A per channel, rated -25 to 60 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Max.":"60 °C","Min.":"-25 °C","Depth":"52 mm","Width":"30 mm","Height":"81 mm","Wire-break":"Yes","Lower Limit":"12 Ω","Upper Limit":"1 kΩ","For Uprating":"No","Short-circuit":"Yes","Shielded, Max.":"500 m","acc. to EN 954":"4","Weight, approx.":"85 g","lifecycle_stage":"current","Power loss, typ.":"3.5 W","Rated value (DC)":"24 V","Unshielded, Max.":"500 m","On Lamp Load, Max.":"10 Hz; Symmetrical","up to 40 °C, max.":"4 A","up to 55 °C, max.":"5 A","up to 60 °C, max.":"4 A","Between The Channels":"No","Diagnostics function":"Yes","For Signal \"1\", Min.":"L+ (-2,0 V), current sourcing switch: L+ (-1,5 V), voltage drop on current sinking switch: max. 0.5 V","Group error SF (red)":"Yes","SIL acc. to IEC 61508":"SIL 3","Type of digital output":"Transistor","Current per module, max.":"6 A","Short-circuit protection":"Yes","Number of digital outputs":"4","With Inductive Load, Max.":"0.1 Hz; Symmetrical","With Resistive Load, Max.":"30 Hz; Symmetrical","For Signal \"1\" Rated Value":"2 A","Controlling a digital input":"No","Reverse polarity protection":"No","For Redundant Control Of A Load":"No","from backplane bus 3.3 V DC, max.":"28 mA","From load voltage L+ (no load), typ.":"100 mA","For Signal \"0\" Residual Current, Max.":"0.5 mA; Current-sourcing and current-sinking switches","Between The Channels And Backplane Bus":"Yes","For Signal \"1\" Permissible Range, Max.":"2.4 A","For Signal \"1\" Permissible Range, Min.":"20 mA","Status indicator digital output (green)":"Yes","Between the channels and load voltage L+":"No","Performance level according to ISO 13849-1":"PLe","Installation altitude above sea level, max.":"2 000 m","Limitation of inductive shutdown voltage to":"Typ. (2L+) -47 V","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m)","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)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$562.61","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e51396e92b3a763c69906944371f4bb2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=250860&mlfb=6AG1138-4FB04-2AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1138-4FB04-2AB0/alternatives.json"},"ai":{"faq":[{"question":"Is 6AG1138-4FB04-2AB0 compatible with standard ET 200S modules?","answer":"Yes — it fits the same ET 200S DIN-rail backplane and communicates over the same backplane bus. It can be mixed with standard I/O slices in the same station, provided the safety CPU handles the F-DQ addressing."},{"question":"Can 6AG1138-4FB04-2AB0 be used as a replacement for a standard ET 200S F-DQ module?","answer":"Yes — it is a direct form-fit-function replacement for the standard F-DQ module in the same slot, with the wider temperature range. No wiring or configuration changes are needed."},{"question":"What is the maximum cable length for 6AG1138-4FB04-2AB0?","answer":"500 m for both shielded and unshielded cable. That covers most field wiring runs in a plant without needing repeaters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1138-4FB04-2AB0","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/6AG1138-4FB04-2AB0 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}}