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6ES7231-5QF32-0XB0 SIMATIC S7-1200, ANALOG INPUT SM 1231 TC, 8 AI
Supply voltage | ||
Rated value (DC) | ||
● 24 V DC | Yes | |
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 | 8; Thermocouples | |
permissible input voltage for current input (destruction limit), max. | ± 35 V | |
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, B, 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 | |
Diagnostic functions | Yes; Can be read out | |
Alarms | ||
● Diagnostic alarm | Yes | |
Diagnostic messages | ||
● 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 | ||
Degree of protection acc. to EN 60529 | ||
● IP20 | Yes | |
Standards, approvals, certificates | ||
CE mark | Yes | |
CSA approval | Yes | |
FM approval | Yes | |
RCM (formerly C-TICK) | Yes | |
Ambient conditions | ||
Free fall | ||
● Fall height, max. | 0.3 m; five times, in product package | |
Ambient temperature during operation | ||
● min. | -20 °C | |
● max. | 60 °C | |
● horizontal installation, min. | -20 °C | |
● horizontal installation, max. | 60 °C | |
● vertical installation, min. | -20 °C | |
● vertical installation, max. | 50 °C | |
Ambient temperature during storage/transportation | ||
● min. | -40 °C | |
● max. | 70 °C | |
Air pressure acc. to IEC 60068-2-13 | ||
● Operation, min. | 795 hPa | |
● Operation, max. | 1 080 hPa | |
● Storage/transport, min. | 660 hPa | |
● Storage/transport, max. | 1 080 hPa | |
Relative humidity | ||
● Operation at 25 ℃ without condensation, max. | 95 % | |
Extended ambient conditions | ||
Pollutant concentrations | ||
— SO2 at RH < 60% without condensation | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free | |
Connection method | ||
required front connector | Yes | |
Mechanics/material | ||
Enclosure material (front) | ||
● Plastic | Yes | |
Dimensions | ||
Width | 45 mm | |
Height | 100 mm | |
Depth | 75 mm | |
Weights | ||
Weight, approx. | 220 g |
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