 |
SIMATIC S7-300, ANALOG INPUT SM 331, OPTICALLY ISOLATED, FOR EXPANDED TEMPERATURE RANGE, 2 AI, 9/12/14 BIT RESOLUTION, U/I/THERMOCOUPLE/RESISTANCE, INTERRUPT, DIAGNOSTICS, 20 PIN |
| Supply voltage |
| Load voltage L+ |
| ● Rated value (DC) |
24 V |
| ● Reverse polarity protection |
Yes |
| Input current |
| from load voltage L+ (without load), max. |
80 mA |
| from backplane bus 5 V DC, max. |
50 mA |
| Power loss |
| Power loss, typ. |
1.3 W |
| Analog inputs |
| Number of analog inputs |
2 |
| Number of analog inputs for resistance measurement |
1 |
| permissible input voltage for voltage input (destruction limit), max. |
20 V |
| permissible input current for current input (destruction limit), max. |
40 mA |
| Input ranges |
| ● Voltage |
Yes |
| ● Current |
Yes |
| ● Thermocouple |
Yes |
| ● Resistance thermometer |
Yes |
| ● Resistance |
Yes |
| Input ranges (rated values), voltages |
| ● 1 to 5 V |
Yes |
| ● Input resistance (1 to 5 V) |
100 kΩ |
| ● -1 V to +1 V |
Yes |
| ● Input resistance (-1 V to +1 V) |
10 MΩ |
| ● -10 V to +10 V |
Yes |
| ● Input resistance (-10 V to +10 V) |
100 kΩ |
| ● -2.5 V to +2.5 V |
Yes |
| ● Input resistance (-2.5 V to +2.5 V) |
100 kΩ |
| ● -250 mV to +250 mV |
Yes |
| ● Input resistance (-250 mV to +250 mV) |
10 MΩ |
| ● -5 V to +5 V |
Yes |
| ● Input resistance (-5 V to +5 V) |
100 kΩ |
| ● -500 mV to +500 mV |
Yes |
| ● Input resistance (-500 mV to +500 mV) |
10 MΩ |
| ● -80 mV to +80 mV |
Yes |
| ● Input resistance (-80 mV to +80 mV) |
10 MΩ |
| Input ranges (rated values), currents |
| ● 0 to 20 mA |
Yes |
| ● Input resistance (0 to 20 mA) |
25 Ω |
| ● -10 to +10 mA |
Yes |
| ● Input resistance (-10 to +10 mA) |
25 Ω |
| ● -20 to +20 mA |
Yes |
| ● Input resistance (-20 to +20 mA) |
25 Ω |
| ● -3.2 to +3.2 mA |
Yes |
| ● Input resistance (-3.2 to +3.2 mA) |
25 Ω |
| ● 4 to 20 mA |
Yes |
| ● Input resistance (4 to 20 mA) |
25 Ω |
| Input ranges (rated values), thermocouples |
| ● Type E |
Yes |
| ● Input resistance (Type E) |
10 MΩ |
| ● Type J |
Yes |
| ● Input resistance (type J) |
10 MΩ |
| ● Type K |
Yes |
| ● Input resistance (Type K) |
10 MΩ |
| ● Type N |
Yes |
| ● Input resistance (Type N) |
10 MΩ |
| Input ranges (rated values), resistance thermometers |
| ● Ni 100 |
Yes; Standard |
| ● Pt 100 |
Yes; Standard |
| ● Input resistance (Pt 100) |
10 MΩ |
| Input ranges (rated values), resistors |
| ● 0 to 150 Ohm |
Yes |
| ● Input resistance (0 to 150 Ohm) |
10 MΩ |
| ● 0 to 300 Ohm |
Yes |
| ● Input resistance (0 to 300 Ohm) |
10 MΩ |
| ● 0 to 600 Ohm |
Yes |
| ● Input resistance (0 to 600 Ohm) |
10 MΩ |
| Thermocouple (TC) |
| Temperature compensation |
| — parameterizable |
Yes |
| — internal temperature compensation |
Yes |
| — external temperature compensation with compensations socket |
Yes |
| Characteristic linearization |
| ● parameterizable |
Yes |
| — for thermocouples |
Type E, J, K, N |
| — for resistance thermometer |
Pt100 (standard), Ni100 (standard) |
| Cable length |
| ● Cable length, shielded, max. |
200 m; 50 m at 80 mV |
| Analog value generation |
| Integration and conversion time/resolution per channel |
| ● Resolution with overrange (bit including sign), max. |
15 bit; Unipolar: 9/12/12/14 bits; bipolar: 9 bits + sign/12 bits + sign/12 bits + sign/14 bits + sign |
| ● Integration time, ms |
2,5 / 16,67 / 20 / 100 ms |
| ● Interference voltage suppression for interference frequency f1 in Hz |
400 / 60 / 50 / 10 Hz |
| Encoder |
| Connection of signal encoders |
| ● for current measurement as 2-wire transducer |
Yes |
| ● for current measurement as 4-wire transducer |
Yes |
| ● for resistance measurement with two-wire connection |
Yes |
| ● for resistance measurement with three-wire connection |
Yes |
| ● for resistance measurement with four-wire connection |
Yes |
| Errors/accuracies |
| Operational error limit in overall temperature range |
| ● Voltage, relative to input area, (+/-) |
1 % |
| ● Current, relative to input area, (+/-) |
1 % |
| ● Resistance, relative to input area, (+/-) |
1 % |
| ● Resistance thermometer, relative to input area, (+/-) |
1 % |
| Basic error limit (operational limit at 25 °C) |
| ● Voltage, relative to input area, (+/-) |
0.6 % |
| ● Current, relative to input area, (+/-) |
0.6 % |
| ● Resistance, relative to input area, (+/-) |
0.6 % |
| ● Resistance thermometer, relative to input area, (+/-) |
0.6 % |
| Interrupts/diagnostics/status information |
| Alarms |
| ● Diagnostic alarm |
Yes; Channel 0 |
| ● Limit value alarm |
Yes |
| Diagnostic messages |
| ● Diagnostics |
Yes; Diagnostic information readable |
| ● Group error |
Yes |
| Galvanic isolation |
| Galvanic isolation analog inputs |
| ● between the channels and the backplane bus |
Yes |
| Isolation |
| Isolation tested with |
500 V DC |
| Connection method |
| required front connector |
20-pin |
| Dimensions |
| Width |
40 mm |
| Height |
125 mm |
| Depth |
120 mm |
| Weights |
| Weight, approx. |
250 g |
| last modified: |
21.08.2014 |
