| General information |
| Product type designation |
SM 1231, AI 4x16 bit |
| Supply voltage |
| Rated value (DC) |
|
| ● 24 V DC |
Yes |
| Input current |
| Current consumption, typ. |
65 mA |
| from backplane bus 5 V DC, typ. |
80 mA |
| Power loss |
| Power loss, typ. |
1.8 W |
| Analog inputs |
| Number of analog inputs |
4; Current or voltage differential inputs |
| permissible input voltage for voltage input (destruction limit), max. |
±35 V |
| permissible input current for current input (destruction limit), max. |
40 mA |
| Cycle time (all channels) max. |
100 µs |
| Input ranges |
| ● Voltage |
Yes; ±10V, ±5V, ±2.5V or ±1.25V |
| ● Current |
Yes; 4 to 20 mA, 0 to 20 mA |
| ● Thermocouple |
No |
| ● Resistance thermometer |
No |
| ● Resistance |
No |
| Input ranges (rated values), voltages |
| ● -1.25 V to +1.25 V |
Yes |
| ● -10 V to +10 V |
Yes |
| ● Input resistance (-10 V to +10 V) |
≥1 MOhm |
| ● -2.5 V to +2.5 V |
Yes |
| ● Input resistance (-2.5 V to +2.5 V) |
≥1 MOhm |
| ● -5 V to +5 V |
Yes |
| ● Input resistance (-5 V to +5 V) |
≥1 MOhm |
| Input ranges (rated values), currents |
| ● 0 to 20 mA |
Yes |
| ● 4 mA to 20 mA |
Yes |
| Analog value generation for the inputs |
| Integration and conversion time/resolution per channel |
| ● Resolution with overrange (bit including sign), max. |
15 bit; + sign |
| ● Integration time, parameterizable |
Yes |
| ● Interference voltage suppression for interference frequency f1 in Hz |
40 dB, DC to 60 V for interference frequency 50 / 60 Hz |
| Smoothing of measured values |
| ● parameterizable |
Yes |
| ● Step: None |
Yes |
| ● Step: low |
Yes |
| ● Step: Medium |
Yes |
| ● Step: High |
Yes |
| Errors/accuracies |
| Temperature error (relative to input range), (+/-) |
25 °C ±0.1% / ±0.3% total measurement range |
| Basic error limit (operational limit at 25 °C) |
| ● Voltage, relative to input range, (+/-) |
0.1 % |
| ● Current, relative to input range, (+/-) |
0.1 % |
| Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency |
| ● Common mode voltage, max. |
12 V |
| Interrupts/diagnostics/status information |
| Alarms |
Yes |
| Diagnostics function |
Yes |
| 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 |
| Marine approval |
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. |
180 g |
| last modified: |
11/10/2018 |
