Model |
SM 1231 AI 4 x 13 bit |
SM 1231 AI 8 x 13 bit |
SM 1231 AI 4 x 16 bit |
|---|---|---|---|
Article number |
6ES7231-4HD32-0XB0 |
6ES7231-4HF32-0XB0 |
6ES7231-5ND32-0XB0 |
Dimensions W x H x D (mm) |
45 x 100 x 75 |
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Weight |
180 grams |
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Power dissipation |
2.2 W |
2.3 W |
2.0 W |
Current consumption (SM Bus) |
80 mA |
90 mA |
80 mA |
Current consumption (24 V DC) |
45 mA |
60 mA |
65 mA |
Model |
SM 1231 AI 4 x 13 bit |
SM 1231 AI 8 x 13 bit |
SM 1231 AI 4 x 16 bit |
|---|---|---|---|
Number of inputs |
4 |
8 |
4 |
Type |
Voltage or current (differential): Selectable in groups of 2 |
Voltage or current (differential) |
|
Range |
±10 V, ±5 V, ±2.5 V, 0 to 20 mA, or 4 mA to 20 mA |
±10 V, ±5 V, ±2.5 V, ±1.25 V, 0 to 20 mA or 4 mA to 20 mA |
|
Full scale range (data word) |
-27648 to 27648 voltage / 0 to 27648 current |
||
Overshoot/undershoot range (data word) Refer to the section on analog input ranges for voltage and current. |
Voltage: 32511 to 27649 / -27649 to -32,512 Current: 32511 to 27649 / 0 to -4864 |
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Overflow/underflow (data word) Refer to the section on input ranges for voltage and current . |
Voltage: 32767 to 32512 / -32513 to -32768 Current 0 to 20 mA: 32767 to 32512 / -4865 to -32768 Current 4 to 20 mA: 32767 to 32512 (values below -4864 indicate open wire) |
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Resolution1 |
12 bits + sign bit |
15 bits + sign bit |
|
Maximum withstand voltage/current |
±35 V / ±40 mA |
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Smoothing |
None, weak, medium, or strong Refer to the section on step response times. |
||
Noise rejection |
400, 60, 50, or 10 Hz Refer to the section on sample rates. |
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Input impedance Before parameterization Voltage Current |
≥ 1 MΩ ≥ 9 MΩ, FS 06 and above ≥ 1 MΩ ≥ 270 Ω, < 290 Ω |
≥ 1 MΩ ≥ 1 MΩ < 315 Ω, > 280 Ω |
|
Isolation Field side to logic Logic to 24 V DC Field side to 24 V DC Channel to channel |
None |
707 V DC (type test) 707 V DC (type test) 500 V DC (type test) None |
|
Accuracy (25 °C / -20 to 60 °C) |
±0.1% / ±0.2% of full scale |
±0.1% / ±0.3% of full scale |
|
Measuring principle |
Actual value conversion |
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Common mode rejection |
40 dB, DC to 60 Hz |
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Operational signal range1 |
Signal plus common mode voltage must be less than +12 V and greater than -12 V |
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Cable length (meters) |
100 m, twisted and shielded |
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1 Voltages outside the operational range applied to one channel may cause interference on other channels.
Model |
SM 1231 AI 4 x 13 bit |
SM 1231 AI 8 x 13 bit |
SM 1231 AI 4 x 16 bit |
|---|---|---|---|
Overflow/underflow |
Yes |
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24 V DC low voltage |
Yes |
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Open wire |
4 to 20 mA range only (if input is below -4864; 1.185 mA) |
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