| 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 |
| Standards, approvals, certificates |
| CE mark |
Yes |
| CSA approval |
Yes |
| UL approval |
Yes |
| cULus |
Yes |
| FM approval |
Yes |
| RCM (formerly C-TICK) |
Yes |
| KC approval |
Yes |
| Marine approval |
Yes |
| Ecological footprint |
| ● environmental product declaration |
Yes |
| Global warming potential |
| — global warming potential, (total) [CO2 eq] |
43.1 kg |
| — global warming potential, (during production) [CO2 eq] |
7.62 kg |
| — global warming potential, (during operation) [CO2 eq] |
36 kg |
| — global warming potential, (after end of life cycle) [CO2 eq] |
-0.544 kg |
| 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 % |
| 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. |
180 g |
| Approvals / Certificates |