{"product_id":"6es7431-1kf00-0ab0-simatic-s7-400-isolated-analog-input","title":"6ES7431-1KF00-0AB0 SIMATIC S7-400 Isolated Analog Input","description":"\u003ch2\u003e\u003cstrong\u003eSIMATIC S7-400 6ES7431-1KF00-0AB0 Isolated Analog Input Module SM 431\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e No external load voltage L+ required; draws max. 350 mA from the 5 V DC backplane bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower loss:\u003c\/strong\u003e Typical 1.8 W, ensuring efficient operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog inputs:\u003c\/strong\u003e 8 channels for voltage\/current, plus 4 channels for resistance measurement (0–600 Ω, usable up to 500 Ω).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDestruction limits:\u003c\/strong\u003e Max. 50 V for voltage input; max. 50 mA (40 mA continuous) for current input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstant measurement current:\u003c\/strong\u003e 1.67 mA for resistance-type transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput ranges (voltage):\u003c\/strong\u003e 1–5 V (200 kΩ), ±1 V (200 kΩ), ±10 V (200 kΩ) – all supported.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput ranges (current):\u003c\/strong\u003e ±20 mA and 4–20 mA with 80 Ω input resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance ranges:\u003c\/strong\u003e 0–600 Ω (usable up to 500 Ω) with 2-, 3-, or 4-wire connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable length:\u003c\/strong\u003e Shielded cables up to 200 m max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 13-bit with overrange, including sign.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegration time:\u003c\/strong\u003e Parameterizable; basic conversion time 23\/25 ms; integration time 16.7\/20 ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterference suppression:\u003c\/strong\u003e For 50\/60 Hz, ensuring stable readings in industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule execution time:\u003c\/strong\u003e 184\/200 ms (all channels released).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature error:\u003c\/strong\u003e ±0.02 %\/K for resistance; ±0.007 %\/K for other ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperational error limits:\u003c\/strong\u003e Voltage ±1.0 % (±1 V), ±0.6 % (±10 V), ±0.7 % (1–5 V); Current ±1.0 %; Resistance ±1.25 % (0–500 Ω).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBasic error limits (at 25 °C):\u003c\/strong\u003e Voltage ±0.7 % (±1 V), ±0.4 % (±10 V), ±0.5 % (1–5 V); Current ±0.7 %; Resistance ±0.8 %.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e No diagnostics function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotential separation:\u003c\/strong\u003e Isolated between channels and backplane bus (tested at 2120 V DC bus-to-analog, 500 V DC bus-to-ground, 2120 V DC analog-to-ground).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation tested:\u003c\/strong\u003e 2120 V DC (bus to analog), 500 V DC (bus to ground), 2120 V DC (analog to ground).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this module support 2-wire transmitters without external power?\u003c\/strong\u003e\u003cbr\u003eNo, 2-wire transmitters require an external supply; the module does not provide load voltage L+.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I connect resistance sensors?\u003c\/strong\u003e\u003cbr\u003eYes, it supports 0–600 Ω resistance with 2-, 3-, or 4-wire connections (usable up to 500 Ω).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the maximum cable length for analog signals?\u003c\/strong\u003e\u003cbr\u003eYou can use shielded cables up to 200 meters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the module isolated from the backplane bus?\u003c\/strong\u003e\u003cbr\u003eYes, it provides full isolation between channels and the backplane bus (tested at 2120 V DC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the conversion time per channel?\u003c\/strong\u003e\u003cbr\u003eThe basic conversion time is 23\/25 ms (selectable for 50\/60 Hz).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does it support thermocouples or RTDs?\u003c\/strong\u003e\u003cbr\u003eNo, it only handles voltage, current, and resistance (not thermocouples or RTDs).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you have stock available?\u003c\/strong\u003e\u003cbr\u003eYes, we keep this module in stock for immediate shipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information Inquiries:\u003c\/strong\u003e\u003cbr\u003eEmail: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003ePhone\/WhatsApp: \u003ca href=\"https:\/\/wa.me\/8615392496282\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePartner NexAuto Technology Limited:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46947290939553,"sku":"6ES7431-1KF00-0AB0","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/6ES7431-1KF00-0AB0.jpg?v=1788164334","url":"https:\/\/www.autonexcontrol.com\/products\/6es7431-1kf00-0ab0-simatic-s7-400-isolated-analog-input","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}