{"product_id":"siemens-6es7431-1kf00-0ab0-sm-431-8ai-13-bit","title":"Siemens 6ES7431-1KF00-0AB0 SIMATIC S7-400 SM 431 8AI 13-Bit U\/I\/R PLC I\/O Module","description":"\u003cp\u003eThe Siemens 6ES7431-1KF00-0AB0 SIMATIC S7-400 SM 431 module provides 8 isolated analog inputs at 13-bit resolution, measuring voltage, current, and 2\/3\/4-wire resistance up to 600 ohms on the same channels. Basic conversion time is 23 or 25 ms per channel, and basic error limit is within plus\/minus 0.7 percent on voltage and current ranges at 25 degrees C. Channels are isolated from the backplane bus and from load voltage L+.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoad voltage L+ – Rated value (DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003enot necessary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput current – from backplane bus 5 V DC, max.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e350 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower loss – Power loss, typ.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – Number of analog inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – For voltage\/current measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – For resistance measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – permissible input voltage for voltage input (destruction limit), max.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – permissible input current for current input (destruction limit), max.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 mA; 40 mA continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog inputs – Constant measurement current for resistance-type transmitter, typ.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.67 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges – Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges – Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges – Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – 1 V to 5 V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – Input resistance (1 V to 5 V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – -1 V to +1 V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – Input resistance (-1 V to +1 V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – -10 V to +10 V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), voltages – Input resistance (-10 V to +10 V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), currents – -20 mA to +20 mA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), currents – Input resistance (-20 mA to +20 mA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), currents – 4 mA to 20 mA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), currents – Input resistance (4 mA to 20 mA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), resistors – 0 to 600 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput ranges (rated values), resistors – Input resistance (0 to 600 ohms)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eusable up to 500 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable length – shielded, max.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Resolution with overrange (bit including sign), max.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Integration time, parameterizable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Basic conversion time (ms)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23 \/ 25 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Integration time (ms)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16,7 \/ 20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Interference voltage suppression for interference frequency f1 in Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration and conversion time\/resolution per channel – Basic execution time of the module (all channels released)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 ms; 184 \/ 200 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for voltage measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes; possible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for current measurement as 2-wire transducer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes; with external transmitter supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for current measurement as 4-wire transducer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for resistance measurement with two-wire connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes; Line resistances are also measured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for resistance measurement with three-wire connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes; Line resistances are also measured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection of signal encoders – for resistance measurement with four-wire connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eErrors\/accuracies – Temperature error (relative to input range), (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.02 %\/K; ±0.02 %\/K in impedance measuring range; ±0.007 % in all other measuring ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperational error limit in overall temperature range – Voltage, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 %; ±1.0 % at ±1 V; ±0.6 % at ±10 V; ±0.7 % at 1 to 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperational error limit in overall temperature range – Current, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 %; at ±20 mA, 4 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperational error limit in overall temperature range – Resistance, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25 %; 0 to 500 ohms (4-conductor measurement, in range of 600 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasic error limit (operational limit at 25 °C) – Voltage, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.7 %; 0.7% at ±1 V; 0.4% at ±10 V; 0.5% at 1 to 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasic error limit (operational limit at 25 °C) – Current, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.7 %; at ±20 mA, 4 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasic error limit (operational limit at 25 °C) – Resistance, relative to input range, (+\/-)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.8 %; 0 to 500 ohms (4-conductor measurement, in range of 600 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePotential separation analog inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes; internal\/external\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePotential separation analog inputs – between the channels and backplane bus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation – Isolation tested with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 120 V DC between bus and analog part; 500 V DC between bus and local ground; 2 120 V DC between analog part and local ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions – Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions – Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e290 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions – Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeights – Weight, approx.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eFull isolation – between channels and the backplane bus, with internal\/external separation – makes this module suited to analog signals from ungrounded or electrically noisy sources, where a shared-reference input would pick up common-mode noise. Four measurement types are supported on the same 8 channels: voltage, current, and 2\/3\/4-wire resistance up to 600 Ω, so one module can cover loop-powered 4-20 mA transmitters and resistive sensors without separate hardware. Basic conversion time is 23\/25 ms per channel (50\/60 Hz suppression), with 13-bit resolution and better than ±0.7% basic error on voltage and current ranges. Use the 4-wire resistance connection when line resistance must be excluded from the measurement.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960598290715,"sku":"6ES7431-1KF00-0AB0","price":1183.81,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7431-1kf00-0ab0-sm-431-analog-input-module.png?v=1789782221","url":"https:\/\/stoklink.com\/products\/siemens-6es7431-1kf00-0ab0-sm-431-8ai-13-bit","provider":"Stoklink","version":"1.0","type":"link"}