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SIMATIC S7-300, ANALOG INPUT SM 331, OPTICALLY ISOLATED, 8 AI, 13 BIT RESOLUTION, U/I/RESISTANCE/PT100, NI100, NI1000, LG-NI1000, 66 MS MODULE UPDATE, 1 X 40 PIN
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Input current |
from backplane bus 5 V DC, max. |
90 mA |
Power losses |
Power loss, typ. |
0.4 W |
Analog inputs |
Number of analog inputs |
8 |
Number of analog inputs for resistance measurement |
8 |
permissible input voltage for voltage input (destruction limit), max. |
30 V; 12 V continuous, 30 V for max. 1 s |
permissible input current for current input (destruction limit), max. |
40 mA |
Input ranges |
Voltage |
Yes |
Current |
Yes |
Thermocouple |
No |
Resistance thermometer |
Yes |
Resistance |
Yes |
Input ranges (rated values), voltages |
0 to +10 V |
Yes |
Input resistance (0 to 10 V) |
100 kΩ |
1 to 5 V |
Yes |
Input resistance (1 to 5 V) |
100 kΩ |
1 to 10 V |
No |
-1 V to +1 V |
Yes |
Input resistance (-1 V to +1 V) |
100 kΩ |
-10 V to +10 V |
Yes |
Input resistance (-10 V to +10 V) |
100 kΩ |
-2.5 V to +2.5 V |
No |
-250 mV to +250 mV |
No |
-5 V to +5 V |
Yes |
Input resistance (-5 V to +5 V) |
100 kΩ |
-50 mV to +50 mV |
Yes |
Input resistance (-50 mV to +50 mV) |
100 kΩ |
-500 mV to +500 mV |
Yes |
Input resistance (-500 mV to +500 mV) |
100 kΩ |
-80 mV to +80 mV |
No |
Input ranges (rated values), currents |
0 to 20 mA |
Yes |
Input resistance (0 to 20 mA) |
50 Ω |
-10 to +10 mA |
No |
-20 to +20 mA |
Yes |
Input resistance (-20 to +20 mA) |
50 Ω |
-3.2 to +3.2 mA |
No |
4 to 20 mA |
Yes |
Input resistance (4 to 20 mA) |
50 Ω |
Input ranges (rated values), thermoelements |
Type B |
No |
Type E |
No |
Type J |
No |
Type K |
No |
Type L |
No |
Type N |
No |
Type R |
No |
Type S |
No |
Type T |
No |
Type U |
No |
Type TXK/TXK(L) to GOST |
No |
Input ranges (rated values), resistance thermometers |
Cu 10 |
No |
Ni 100 |
Yes; Standard/climate |
Input resistance (Ni 100) |
100 MΩ |
Ni 1000 |
Yes |
Input resistance (Ni 1000) |
100 MΩ |
LG-Ni 1000 |
Yes; Standard/climate |
Input resistance (LG-Ni 1000) |
100 MΩ |
Ni 120 |
No |
Ni 200 |
No |
Ni 500 |
No |
Pt 100 |
Yes; Standard/climate |
Input resistance (Pt 100) |
100 MΩ |
Pt 1000 |
No |
Pt 200 |
No |
Pt 500 |
No |
Input ranges (rated values), resistors |
0 to 150 ohms |
No |
0 to 300 ohms |
No |
0 to 600 ohms |
Yes |
Input resistance (0 to 600 ohms) |
100 MΩ |
0 to 6000 ohms |
Yes |
Input resistance (0 to 6000 ohms) |
100 MΩ |
Resistance thermometer (RTD) |
Characteristic linearization |
for resistance thermometer |
yes; Pt100 standard/air con.; Ni100 standard/air con.; Ni1000 standard/air con.; LG-Ni1000 standard/air con. |
Characteristic linearization |
Parameterizable |
Yes |
Cable length |
Cable length, shielded, max. |
200 m; max. 50 m at 50 mV |
Analog value creation |
Measurement principle |
integrating |
Integrations and conversion time/ resolution per channel |
Resolution with overrange (bit including sign), max. |
13 bit |
Integration time, parameterizable |
Yes; 60 / 50 ms |
Basic conversion time, ms |
66 / 55 ms |
Interference voltage suppression for interference frequency f1 in Hz |
50 / 60 Hz |
Encoder |
Connection of signal encoders |
for current measurement as 2-wire transducer |
Yes; with external supply |
for current measurement as 4-wire transducer |
Yes |
for resistance measurement with 2-conductor connection |
Yes |
for resistance measurement with 3-conductor connection |
Yes |
for resistance measurement with 4-conductor connection |
Yes |
Errors/accuracies |
Operational limit in overall temperature range |
Voltage, relative to input area |
+/- 0,6 %; +/-0.6% (+/-5 V, 10 V, 1 to 5 V, 0 to 10 V); +/-0.5% (+/-50 mV, 500 mV, 1 V) |
Current, relative to input area |
+/- 0,5 %; +/-20 mA, 0 to 20 mA, 4 to 20 mA |
Impedance, relative to input area |
+/- 0,5 %; 0 to 6 kohms, 0 to 600 kohms |
Resistance-type thermometer, relative to input area |
1 Kelvin (Pt100, Ni100, climatic; Ni1000, LG-Ni1000, standard; Ni1000, LG-Ni1000, climatic); 1.2 Kelvin (Pt100, Ni100, standard) |
Basic error limit (operational limit at 25 °C) |
Voltage, relative to input area |
+/- 0,4 %; 0.4% (+/-5 V, 10 V, 1 to 5 V, 0 to 10 V); 0.3% (+/-50 mV, 500 mV, 1 V) |
Current, relative to input area |
+/- 0,3 %; +/-20 mA, 0 to 20 mA, 4 to 20 mA |
Impedance, relative to input area |
+/- 0,3 %; 0 to 6 kohms, 0 to 600 kohms |
Resistance-type thermometer, relative to input area |
1 Kelvin (Pt100, Ni100, standard); 0.8 Kelvin (Pt100, Ni100, climatic; Ni1000, LG-Ni1000, standard; Ni1000, LG-Ni1000, climatic) |
Isochronous mode |
Isochronous operation (application synchronized up to terminal) |
No |
Interrupts/diagnostics/status information |
Alarms |
Diagnostic alarm |
No |
Limit value alarm |
No |
Diagnostic messages |
Diagnostic functions |
No |
Diagnostic information readable |
No |
Diagnostics |
No |
Group error |
No |
Diagnostics indication LED |
Group error SF (red) |
No |
Galvanic isolation |
Galvanic isolation analog inputs |
between the channels |
No |
between the channels and the backplane bus |
Yes |
Isolation |
Isolation checked with |
500 V DC |
Connection method |
required front connector |
40-pin |
Dimensions |
Width |
40 mm |
Height |
125 mm |
Depth |
117 mm |
Weight |
Weight, approx. |
250 g |
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