6ES7231-5ND32-0XB0
SIMATIC S7-1200, Analog input, SM 1231, 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15 bit+sign bit.
Product category
Signal modulesManufacturer
SIEMENSProduct series
S7-1200| General information | |
|---|---|
| Product type designation | SM 1231, AI 4x16 bit |
| Supply voltage | |
| Rated value (DC) | 24 V |
| 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 |
| 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 | |