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| Article number | 6ES7231-4HD32-0XB0 | 6ES7231-4HF32-0XB0 | 6ES7231-5ND32-0XB0 |
| Analog Input SM 1231, 4AI | Analog Input SM 1231, 8AI | Analog Input SM 1231, 4AI 16bit | |
| General information | |||
| Product type designation | SM 1231, AI 4×13 bit | SM 1231, AI 8×13 bit | SM 1231, AI 4×16 bit |
| Supply voltage | |||
| Rated value (DC) | 24 V | 24 V | 24 V |
| Input current | |||
| Current consumption, typ. | 45 mA | 45 mA | 65 mA |
| from backplane bus 5 V DC, typ. | 80 mA | 90 mA | 80 mA |
| Power loss | |||
| Power loss, typ. | 1.5 W | 1.5 W | 1.8 W |
| Analog inputs | |||
| Number of analog inputs | 4; Current or voltage differential inputs | 8; Current or voltage differential inputs | 4; Current or voltage differential inputs |
| permissible input voltage for voltage input (destruction limit), max. | 35 V | 35 V | ±35 V |
| permissible input current for current input (destruction limit), max. | 40 mA | 40 mA | 40 mA |
| Cycle time (all channels) max. | 625 µs | 625 µs | 100 µs |
| Input ranges | |||
|
● Voltage
|
Yes; ±10V, ±5V, ±2.5V | Yes; ±10V, ±5V, ±2.5V | Yes; ±10V, ±5V, ±2.5V or ±1.25V |
|
● Current
|
Yes; 4 to 20 mA, 0 to 20 mA | Yes; 4 to 20 mA, 0 to 20 mA | Yes; 4 to 20 mA, 0 to 20 mA |
|
● Resolution with overrange (bit including sign), max.
|
12 bit; + sign | 12 bit; + sign | 15 bit; + sign |
|
● Integration time, parameterizable
|
Yes | Yes | Yes |
|
● Interference voltage suppression for interference frequency f1 in Hz
|
40 dB, DC to 60 V for interference frequency 50 / 60 Hz | 40 dB, DC to 60 V for interference frequency 50 / 60 Hz | 40 dB, DC to 60 V for interference frequency 50 / 60 Hz |
|
● Fall height, max.
|
0.3 m; five times, in product package | 0.3 m; five times, in product package | 0.3 m; five times, in product package |
| Ambient temperature during operation | |||
| Ambient temperature during storage/transportation | |||
|
● min.
|
-40 °C | -40 °C | -40 °C |
|
● max.
|
70 °C | 70 °C | 70 °C |
| Air pressure acc. to IEC 60068-2-13 | |||
|
● Operation, min.
|
795 hPa | 795 hPa | 795 hPa |
|
● Operation, max.
|
1 080 hPa | 1 080 hPa | 1 080 hPa |
|
● Storage/transport, min.
|
660 hPa | 660 hPa | 660 hPa |
|
● Storage/transport, max.
|
1 080 hPa | 1 080 hPa | 1 080 hPa |
| Relative humidity | |||
|
● Operation at 25 ℃ without condensation, max.
|
95 % | 95 % | 95 % |
| Pollutant concentrations | |||
|
● SO2 at RH < 60% without condensation
|
S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free |
| Dimensions | |||
| Width | 45 mm | 45 mm | 45 mm |
| Height | 100 mm | 100 mm | 100 mm |
| Depth | 75 mm | 75 mm | 75 mm |
| Weights | |||
| Weight, approx. | 180 g | 180 g | 180 g |
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