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6ES7231-5QD32-0XB0

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Siemens 6ES7231-5QD32-0XB0

SIMATIC S7-1200, Analog input, SM 1231 TC, 4 AI thermocouples

General information
Product type designation		SM 1231, AI 4x16 bit TC
Supply voltage
Rated value (DC)		24 V
Input current
Current consumption, typ.		40 mA
from backplane bus 5 V DC, typ.		80 mA
Power loss
Power loss, typ.		1.5 W
Analog inputs
Number of analog inputs		4; Thermocouples
permissible input voltage for voltage input (destruction limit), max.		±35 V
Technical unit for temperature measurement adjustable		Degrees Celsius/degrees Fahrenheit
Input ranges
● Voltage		Yes
● Current		No
● Thermocouple		Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: ±80 mV
● Resistance thermometer		No
● Resistance		No
Input ranges (rated values), voltages
● -80 mV to +80 mV		Yes
— Input resistance (-80 mV to +80 mV)		≥1 MOhm
Input ranges (rated values), thermocouples
● Type B		Yes
● Type C		Yes
● Type E		Yes
● Type J		Yes
● Type K		Yes
● Type N		Yes
● Type R		Yes
● Type S		Yes
● Type T		Yes
● Type TXK/TXK(L) to GOST		Yes
Thermocouple (TC)
Temperature compensation
— parameterizable		No
Analog value generation for the inputs
Measurement principle		integrating
Integration and conversion time/resolution per channel
● Resolution with overrange (bit including sign), max.		15 bit; + sign
● Integration time, parameterizable		No
● Interference voltage suppression for interference frequency f1 in Hz		85 dB at 50 / 60 / 400 Hz
Smoothing of measured values
● parameterizable		Yes
Errors/accuracies
Temperature error (relative to input range), (+/-)		25 °C ±0.1%, to 55 °C ±0.2% total measurement range
Repeat accuracy in steady state at 25 °C (relative to output range), (+/-)		0.5 %
Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency
● Common mode interference, min.		120 dB
Interrupts/diagnostics/status information
Alarms		Yes
Diagnostics function		Yes; Can be read out
Alarms
● Diagnostic alarm		Yes
Diagnoses
● Monitoring the supply voltage		Yes
● Wire-break		Yes
Diagnostics indication LED
● for status of the inputs		Yes
● for maintenance		Yes
Degree and class of protection
IP degree of protection		IP20