General information |
Product type designation |
SM 1231, AI 8x16 bit TC |
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 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 |
Diagnostics function |
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 |
last modified: |
11/10/2018 |