|
SIMATIC S7-1200, ANALOG INPUT, SM 1231 TC, 4 AI THERMOCOUPLE |
| Supply voltage |
| 24 V DC |
Yes |
| Input current |
| Current consumption, typ. |
40 mA |
| from backplane bus 5 V DC, typ. |
80 mA |
| Power losses |
| Power loss, typ. |
1.5 W |
| Analog inputs |
| Number of analog inputs |
4; 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 |
| ● 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), thermoelements |
| ● 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) |
| ● permissible input voltage for voltage input (destruction limit), max. |
+-35 V |
| Temperature compensation |
| — Parameterizable |
No |
| Analog outputs |
| Number of analog outputs |
0 |
| Analog value creation |
| 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 |
| Analog value generation (in isochronous mode) |
| 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 area), (+/-) |
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 |
| ● 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 |
| Degree and class of protection |
| Degree of protection to EN 60529 |
|
| ● IP20 |
Yes |
| Standards, approvals, certificates |
| CE mark |
Yes |
| RCM (formerly C-TICK) |
Yes |
| FM approval |
Yes |
| Highest safety class achievable in safety mode |
| ● SIL according to IEC 61508:2010 |
none |
| 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 |
| Relative humidity |
| — Permissible range (without condensation) at 25 °C |
95 % |
| Mechanical and climatic conditions during operation |
| Climatic conditions in operation |
| Temperature |
| — Permissible temperature range |
-20 °C to +60 °C horizontal mounting, -20 °C to 50 °C vertical mounting, 95% humidity, non-condensing |
| 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 |
| Connection method |
| required front connector |
Yes |
| Mechanics/material |
| Type of housing (front) |
|
| ● plastic |
Yes |
| Dimensions |
| Width |
45 mm |
| Height |
100 mm |
| Depth |
75 mm |
| Weights |
| Weight, approx. |
180 g |
| last modified: |
13.10.2014 |
