| SIMATIC S7-1200, ANALOG INPUT, SM 1231 TC, 8 AI THERMOCOUPLE |
|
Supply voltage |
24 V DC | Yes |
Input current |
Current consumption, typ. | 80 mA |
from backplane bus 5 V DC, typ. | 80 mA |
Power losses |
Power loss, typ. | 1.5 W |
Analog inputs |
Number of analog inputs | 8; Thermocouples |
permissible input frequency for current input (destruction limit), max. | ± 35 V |
Technical unit for temperature measurement adjustable | Degrees Celsius/degrees Fahrenheit |
Input ranges |
Thermocouple | Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: +/-80 mV |
Input ranges (rated values), voltages |
-80 mV to +80 mV | Yes |
Input ranges (rated values), thermoelements |
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) |
permissible input voltage for voltage input (destruction limit), max. | +-35V |
Temperature compensation |
Parameterizable | No |
Analog value creation |
Measurement principle | integrating |
Integrations 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 |
Analog value generation (in isochronous mode) |
Smoothing of measured values |
Parameterizable | Yes |
Errors/accuracies |
cold connection point | +/-1.5 °C |
Temperature error (relative to input area) | 25 °C ±0.1 % to 55 °C ±0.2 % total measurement range |
Interference voltage suppression for f = n x (fl +/- 1%), fl = interference frequency |
Common mode interference, min. | 120 dB |
Interrupts/diagnostics/status information |
Alarms |
Alarms | Yes |
Diagnostic alarm | Yes |
Diagnostic messages |
Diagnostic functions | Yes; Can be read out |
Monitoring the supply voltage | Yes |
Wire break | Yes |
Diagnostics indication LED |
for status of the inputs | Yes |
for maintenance | Yes |
Climatic and mechanical conditions for storage and transport |
Climatic conditions for storage and transport |
Free fall |
Drop height, max. (in packaging) | 0.3 m; five times, in dispatch package |
Temperature |
Permissible temperature range | -40 °C to +70 °C |
Air pressure acc. to IEC 60068-2-13 |
Permissible air pressure | 1080 to 660 hPa |
Mechanical and climatic conditions during operation |
Climatic conditions in operation |
Temperature |
Permissible temperature range | 0 °C to 55 °C horizontal installation 0 °C to 45 °C vertical installation |
Air pressure acc. to IEC 60068-2-13 |
Permissible air pressure | 1080 to 795 hPa |
Pollutant concentrations |
SO2 at RH < 60% without condensation | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free |
Degree and class of protection |
IP20 | Yes |
Standards, approvals, certificates |
CE mark | Yes |
C-TICK | Yes |
FM approval | Yes |
Connection method |
required front connector | Yes |
Mechanics/material |
Type of housing (front) | |
Plastic | Yes |
Dimensions |
Width | 45 mm |
Height | 100 mm |
Depth | 75 mm |
Weight |
Weight, approx. | 220 g |
Status | Mar 12, 2012 |