Data sheet 6ES7231-5PF32-0XB0 SIMATIC S7-1200, ANALOG INPUT, SM 1231RTD, 8 X AI RTD MODULE, Supply voltage Rated value (DC) Yes 24 V DC Input current Current consumption, typ. 40mA from backplane bus 5 V DC, typ. 80mA Power loss Power loss, typ. 1.5W Analog inputs Number of analog inputs 8 Resistance thermometer permissible input voltage for current input 35 V (destruction limit), max. Technical unit for temperature measurement Degrees Celsius/degrees Fahrenheit adjustable Input ranges No Voltage No Current No Thermocouple 6ES7231-5PF32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 1/4Yes Resistance-type transmitter: Pt10, Pt50, Pt100, Pt200, Resistance thermometer Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 Yes 150 , 300 , 600 Resistance Input ranges (rated values), resistance thermometer Yes Cu 10 10 Input resistance (Cu 10) Yes Ni 100 100 Input resistance (Ni 100) Yes Ni 1000 1000 Input resistance (Ni 1000) Yes LG-Ni 1000 1000 Input resistance (LG-Ni 1000) Yes Ni 120 120 Input resistance (Ni 120) Yes Ni 200 200 Input resistance (Ni 200) Yes Ni 500 500 Input resistance (Ni 500) Yes Pt 100 100 Input resistance (Pt 100) Yes Pt 1000 1000 Input resistance (Pt 1000) Yes Pt 200 200 Input resistance (Pt 200) Yes Pt 500 500 Input resistance (Pt 500) Input ranges (rated values), resistors Yes 0 to 150 ohms Yes 0 to 300 ohms Yes 0 to 600 ohms Thermocouple (TC) Temperature compensation No parameterizable Analog value generation for the inputs Measurement principle integrating Integration and conversion time/resolution per channel 15bit + sign Resolution with overrange (bit including sign), max. No Integration time, parameterizable 85 dB at 50 / 60 / 400 Hz Interference voltage suppression for interference frequency f1 in Hz 6ES7231-5PF32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 2/4