| General information |
| Product type designation |
SM 1231, AI 4×16 bit RTD |
| 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 |
4; Resistance thermometer |
| permissible input voltage for voltage input (destruction limit), max. |
± 35 V |
| Technical unit for temperature measurement adjustable |
Degrees Celsius/degrees Fahrenheit |
| Input ranges |
| ● Voltage |
No |
| ● Current |
No |
| ● Thermocouple |
No |
| ● Resistance thermometer |
Yes; Resistance-type transmitter: Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 |
| ● Resistance |
Yes; 150 Ω, 300 Ω, 600 Ω |
| Input ranges (rated values), resistance thermometer |
| ● Cu 10 |
Yes |
| ● Input resistance (Cu 10) |
10 Ω |
| ● Ni 100 |
Yes |
| ● Input resistance (Ni 100) |
100 Ω |
| ● Ni 1000 |
Yes |
| ● Input resistance (Ni 1000) |
1 000 Ω |
| ● LG-Ni 1000 |
Yes |
| ● Input resistance (LG-Ni 1000) |
1 000 Ω |
| ● Ni 120 |
Yes |
| ● Input resistance (Ni 120) |
120 Ω |
| ● Ni 200 |
Yes |
| ● Input resistance (Ni 200) |
200 Ω |
| ● Ni 500 |
Yes |
| ● Input resistance (Ni 500) |
500 Ω |
| ● Pt 100 |
Yes |
| ● Input resistance (Pt 100) |
100 Ω |
| ● Pt 1000 |
Yes |
| ● Input resistance (Pt 1000) |
1 000 Ω |
| ● Pt 200 |
Yes |
| ● Input resistance (Pt 200) |
200 Ω |
| ● Pt 500 |
Yes |
| ● Input resistance (Pt 500) |
500 Ω |
| Input ranges (rated values), resistors |
| ● 0 to 150 ohms |
Yes |
| ● 0 to 300 ohms |
Yes |
| ● 0 to 600 ohms |
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 |
| 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), (+/-) |
0.05 % |
| 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 % |
| 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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