{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7431-7KF00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7431-7KF00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7431-7KF00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7431-7KF00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6ES7431-7KF00-0AB0 — now in phase-out and being discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.","salesMarkdown":"## Overview The module draws 4.6 W from a 35 V supply, consumes 0.032 A, and has been RoHS compliant since 01-03-08. Its dimensions are 25 mm wide, 290 mm high, and 210 mm deep, weighing 650 g. This module converts analog signals from thermocouples and other sensors into digital values for the S7-400 backplane. The 8 input channels are individually configurable for different thermocouple types or voltage/current ranges, allowing a single module to handle mixed sensor types on one rack. Parameterizable diagnostics are built in, enabling the CPU to read wire-break, overrange, and underrange conditions per channel. The module supports a 10 Hz integration frequency, suitable for filtering mains-frequency noise in industrial environments. ## Applications Typical installations include furnace temperature monitoring, kiln control, plastic extrusion barrel profiling, and chemical reactor temperature scanning where multiple thermocouples must be read by a single S7-400 rack. The wide range of supported thermocouple types makes it a universal fit for most process temperature loops.","metaTitle":"Siemens 6ES7431-7KF00-0AB0 SM 431 Analog Input Module, 8 Ch","metaDescription":"Siemens SM 431 analog input module 6ES7431-7KF00-0AB0: 8 inputs, thermocouple types B/E/J/K/L/N/R/S/T/U, ±1 V to ±80 mV, 4.6 W, 35 V, RoHS.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog Input Modules"],"specifications":{"Depth":"210 mm","Width":"25 mm","Height":"290 mm","Type B":"Yes","Type E":"Yes","Type J":"Yes","Type K":"Yes","Type L":"Yes","Type N":"Yes","Type R":"Yes","Type S":"Yes","Type T":"Yes","Type U":"Yes","Current":"Yes","Voltage":"Yes","0 to 20 mA":"Yes","1 V to 5 V":"Yes","Resistance":"No","-1 V to +1 V":"Yes","-5 V to +5 V":"Yes","Thermocouple":"Yes","4 mA to 20 mA":"Yes","-10 V to +10 V":"Yes","-5 mA to +5 mA":"Yes","Shielded, Max.":"200 m","Parameterizable":"Yes","Weight, approx.":"650 g","lifecycle_stage":"mature","-10 mA to +10 mA":"Yes","-2.5 V to +2.5 V":"Yes","-20 mA to +20 mA":"Yes","-20 mV to +20 mV":"Yes","-50 mV to +50 mV":"Yes","-80 mV to +80 mV":"Yes","Diagnostic alarm":"Yes; Parameterizable","Power loss, typ.":"4.6 W","For Thermocouples":"Type B, E, J, K, L, N, R, S, T, U","Limit value alarm":"Yes","-100 mV to +100 mV":"Yes","-250 mV to +250 mV":"Yes","-3.2 mA to +3.2 mA":"Yes","-500 mV to +500 mV":"Yes","Hardware interrupt":"Yes; Parameterizable","Between The Channels":"Yes","Diagnostics function":"Yes; Parameterizable","Integration time (ms)":"2,5 / 16,7 / 20 / 100","Isolation tested with":"1 500 V DC","Resistance thermometer":"No","For Voltage Measurement":"Yes; possible","Number of analog inputs":"8","Input resistance (Type B)":"> 2 000 ohms","Input resistance (Type N)":"> 2 000 ohms","Basic conversion time (ms)":"10 / 16,7 / 20 / 100","Input resistance (1 V to 5 V)":"> 2 000 ohms","Diagnostic information readable":"Yes; possible","For voltage/current measurement":"8","from backplane bus 5 V DC, max.":"1 200 mA","Input resistance (4 mA to 20 mA)":"50 Ω","Integration time, parameterizable":"Yes","Internal Temperature Compensation":"Yes","Potential separation analog inputs":"Yes; internal/external","Dynamic Reference Temperature Value":"Yes","Between The Channels And Backplane Bus":"Yes","Current, relative to input range, (+/-)":"0.17 %","Voltage, relative to input range, (+/-)":"0.1 %","For Current Measurement As 4-Wire Transducer":"Yes","Connection For Compensating The Cold Junction":"6ES7431-7KF00-6AA0","For Resistance Measurement With Four-Wire Connection":"Yes","Resolution with overrange (bit including sign), max.":"16 bit","External Temperature Compensation With Compensations Socket":"Yes","Interference voltage suppression for interference frequency f1 in Hz":"400 / 60 / 50 / 10 Hz","Permissible Input Current For Current Input (Destruction Limit), Max.":"32 mA","Permissible Input Voltage For Voltage Input (Destruction Limit), Max.":"35 V; 35 V continuous, 75 V for max. 1 s (mark to space ratio 1:20)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$666.66","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/aa3a5e458d082a9d6fa0742c64c15e28.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=238496&mlfb=6ES7431-7KF00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7431-7KF00-0AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7431-7KF00-0AB0","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/6ES7431-7KF00-0AB0 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}}