Data sheet 6ES7231-4HD32-0XB0 SIMATIC S7-1200, ANALOG INPUT, SM 1231, 4 AI, +/-10V, +/-5V, +/-2.5V, OR 0-20MA/4-20 MA, 12 BIT + SIGN BIT (13 BIT ADC) Supply voltage Rated value (DC) Yes 24 V DC Input current Current consumption, typ. 45mA from backplane bus 5 V DC, typ. 80mA Power loss Power loss, typ. 1.5W Analog inputs Number of analog inputs 4 Current or voltage differential inputs permissible input voltage for current input 35 V (destruction limit), max. permissible input voltage for voltage input 35V (destruction limit), max. permissible input current for voltage input 40mA (destruction limit), max. permissible input current for current input (destruction 40mA limit), max. 6ES7231-4HD32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 1/4Cycle time (all channels) max. 625s Input ranges Yes 10V, 5V, 2.5V Voltage Yes 4 to 20 mA, 0 to 20 mA Current No Thermocouple No Resistance thermometer No Resistance Input ranges (rated values), voltages Yes -10 V to +10 V 9 MOhm Input resistance (-10 V to +10 V) Yes -2.5 V to +2.5 V 9 MOhm Input resistance (-2.5 V to +2.5 V) Yes -5 V to +5 V 9 MOhm Input resistance (-5 V to +5 V) Input ranges (rated values), currents Yes 0 to 20 mA 280 Input resistance (0 to 20 mA) Yes 4 mA to 20 mA 280 Input resistance (4 mA to 20 mA) Analog value generation for the inputs Integration and conversion time/resolution per channel 12bit + sign Resolution with overrange (bit including sign), max. Yes Integration time, parameterizable 40 dB, DC to 60 V for interference frequency 50 / 60 Hz Interference voltage suppression for interference frequency f1 in Hz Smoothing of measured values Yes parameterizable Yes Step: None Yes Step: low Yes Step: Medium Yes Step: High Errors/accuracies Temperature error (relative to input range), (+/-) 25 C 0.1%, to 55 C 0.2% total measurement range Basic error limit (operational limit at 25 C) 0.1% Voltage, relative to input range, (+/-) 0.1% Current, relative to input range, (+/-) Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency 12V Common mode voltage, max. Interrupts/diagnostics/status information Alarms Yes 6ES7231-4HD32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 2/4