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6ES7231-4HF50-0XB0

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Siemens 6ES7231-4HF50-0XB0

SIMATIC S7-1200 G2: SM 1231 analog input, 8 AI; inputs: 8x AI 14 bit ADC (+/-10 V, +/-5 V, +/-2.5 V or 0-20 mA/4-20 mA)

General information
Product type designation		SM 1231, AI 8x 14 bit
Supply voltage
Rated value (DC)		24 V
permissible range, lower limit (DC)		20.4 V
permissible range, upper limit (DC)		28.8 V
Input current
Current consumption, typ.		45 mA
from backplane bus 5 V DC, typ.		75 mA
Power loss
Power loss, typ.		2.5 W
Analog inputs
Number of analog inputs		8; Current or voltage differential inputs
permissible input voltage for voltage input (destruction limit), max.		35 V
permissible input current for current input (destruction limit), max.		40 mA
Cycle time (all channels) max.		1.25 ms; at 400 Hz rejection
Input ranges
● Voltage		Yes; ±10V, ±5V, ±2.5V
● Current		Yes; 4 to 20 mA, 0 to 20 mA
● Thermocouple		No
● Resistance thermometer		No
● Resistance		No
Input ranges (rated values), voltages
● -10 V to +10 V		Yes
— Input resistance (-10 V to +10 V)		≥1 MOhm
● -2.5 V to +2.5 V		Yes
— Input resistance (-2.5 V to +2.5 V)		≥1 MOhm
● -5 V to +5 V		Yes
— Input resistance (-5 V to +5 V)		≥1 MOhm
Input ranges (rated values), currents
● 0 to 20 mA		Yes
— Input resistance (0 to 20 mA)		< 290 Ω, > 270 Ω
● 4 mA to 20 mA		Yes
— Input resistance (4 mA to 20 mA)		< 290 Ω, > 270 Ω
Cable length
● shielded, max.		100 m; shielded, twisted pair
Analog value generation for the inputs
Measurement principle		successive approximation
Integration and conversion time/resolution per channel
● Resolution with overrange (bit including sign), max.		13 bit; + sign
● Integration time, parameterizable		Yes
● Interference voltage suppression for interference frequency f1 in Hz		40 dB, DC to 60 Hz
Smoothing of measured values
● parameterizable		Yes
● Step: None		Yes
● Step: low		Yes
● Step: Medium		Yes
● Step: High		Yes
Errors/accuracies
Temperature error (relative to input range), (+/-)		25 °C ±0.1 % / -20 °C to 60 °C ±0.2 % of the full-scale deflection
Basic error limit (operational limit at 25 °C)
● Voltage, relative to input range, (+/-)		0.1 %
● Current, relative to input range, (+/-)		0.1 %
Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency
● Common mode voltage, max.		12 V
Interrupts/diagnostics/status information
Diagnostics function		Yes
Alarms
● Diagnostic alarm		Yes
Diagnoses
● Monitoring the supply voltage		Yes
● Wire-break		Yes
Diagnostics indication LED
● DIAG LED		Yes
● for status of the inputs		Yes
Degree and class of protection
IP degree of protection		IP20