{"product_id":"6es7431-1kf20-0ab0-sm-431-8-ai-14-bit-0-416ms-siemens","title":"6ES7431-1KF20-0AB0 | SM 431 8 AI 14 Bit 0.416ms  Siemens","description":"\u003ch2 style=\"color: #2c3e50; border-bottom: none; padding-bottom: 6px;\"\u003eSiemens \u003cspan style=\"color: #2980b9; font-weight: bold;\"\u003e6ES7431-1KF20-0AB0\u003c\/span\u003e SIMATIC S7-400 Analog Input Module\u003c\/h2\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eSiemens \u003cspan style=\"color: #2980b9; font-weight: bold;\"\u003e6ES7431-1KF20-0AB0\u003c\/span\u003e is a SIMATIC S7-400 analog input module SM 431 with 8 isolated analog inputs. Features 14 bit resolution with ultra-fast 0.416 ms cycle time. Supports voltage, current, and resistor input ranges. Isolated between channels and backplane bus. Designed for high-speed analog signal acquisition applications.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; background: #f8fafc;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #2c3e50; color: white;\"\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ccc;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ccc;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e6ES7431-1KF20-0AB0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eSeries\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eSIMATIC S7-400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eAnalog Input SM 431\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e8 isolated (4 for resistance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eResolution\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e14 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCycle Time\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e0.416 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eLoad Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eInput Current from L+\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e200 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eBackplane Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e1000 mA max at 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003ePower Loss\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e4.9 W typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eVoltage Ranges\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e±1V, ±10V, 1 to 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eCurrent Ranges\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e±20mA, 4 to 20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eResistor Range\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e0 to 600 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eBasic Conversion Time\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e52 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eInput Filter Time Constant\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e15 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eModule Execution Time\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e0.42 s (all channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eShielded Cable Length\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e200m max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eIsolation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e2120V DC bus to analog section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eDimensions W x H x D\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e25 x 290 x 210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ccc;\"\u003e500 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eInstall module in SIMATIC S7-400 rack. Connect 24V DC load voltage for 2 wire transmitters. Wire analog signals to front connector. Use shielded cable maximum 200m. Verify potential separation between channels and backplane bus. Configure integration time and filter per application requirements.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003e8 isolated analog inputs with 14 bit resolution. Ultra-fast 0.416 ms cycle time for high speed applications. Supports voltage (±1V, ±10V, 1 to 5V), current (±20mA, 4 to 20mA), and resistor (0 to 600 Ohm) inputs. Integration time parameterizable with 400\/60\/50 Hz interference suppression. 15 µs input filter time constant. Potential separation between channels and backplane bus. Compact 25mm width design.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1:\u003c\/strong\u003e How many analog inputs does this module have?\u003cbr\u003e\n\u003cstrong\u003eA1:\u003c\/strong\u003e 8 analog inputs for voltage\/current measurement, 4 for resistance measurement. Resolution 14 bit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2:\u003c\/strong\u003e What is the cycle time?\u003cbr\u003e\n\u003cstrong\u003eA2:\u003c\/strong\u003e 0.416 ms cycle time. Basic conversion time 52 µs. Module execution time 0.42 s for all channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3:\u003c\/strong\u003e What is the difference between 1KF10 and 1KF20?\u003cbr\u003e\n\u003cstrong\u003eA3:\u003c\/strong\u003e 1KF20 offers faster cycle time (0.416 ms vs 20.1 ms) and supports ±20mA and ±1V ranges but does not support thermocouple or RTD inputs like 1KF10.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67854865858692,"sku":"6ES7431-1KF20-0AB0","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/6ES7431-1KF20-0AB0.jpg?v=1793627576","url":"https:\/\/www.etowonauto.com\/de\/products\/6es7431-1kf20-0ab0-sm-431-8-ai-14-bit-0-416ms-siemens","provider":"Etowon Auto","version":"1.0","type":"link"}