| Article number |
6ES7331-7RD00-0AB0 |
6ES7331-7SF00-0AB0 |
|
SIMATIC S7, SM 331 ANALOG INPUT |
SIMATIC S7, SM 331 ANALOG INPUT |
| Supply voltage |
|
|
| Load voltage L+ |
|
|
| ● Rated value (DC) |
24 V |
24 V |
| ● Reverse polarity protection |
Yes |
|
| Input current |
|
|
| from load voltage L+ (without load), max. |
250 mA |
|
| from backplane bus 5 V DC, max. |
60 mA |
120 mA |
| output voltage / header |
|
|
| supply voltage of the transmitters / header |
|
|
| ● supply voltage / of the transmitters / at DC / rated value |
13 V; at 22 mA |
|
| Power loss |
|
|
| Power loss, typ. |
3 W |
0.6 W |
| Analog inputs |
|
|
| Number of analog inputs |
4 |
8; 8x thermocouples; 4x RTD thermoresistors |
| permissible input current for current input (destruction limit), max. |
40 mA |
|
| Input ranges |
|
|
| ● Voltage |
No |
Yes |
| ● Current |
Yes |
No |
| ● Thermocouple |
No |
Yes |
| ● Resistance thermometer |
No |
Yes |
| ● Resistance |
No |
Yes |
| Input ranges (rated values), voltages |
|
|
| ● -1 V to +1 V |
|
Yes |
| — Input resistance (-1 V to +1 V) |
|
10 MΩ |
| ● -25 mV to +25 mV |
|
Yes |
| — Input resistance (-25 mV to +25 mV) |
|
10 MΩ |
| ● -250 mV to +250 mV |
|
Yes |
| — Input resistance (-250 mV to +250 mV) |
|
10 MΩ |
| ● -50 mV to +50 mV |
|
Yes |
| — Input resistance (-50 mV to +50 mV) |
|
10 MΩ |
| ● -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) |
50 Ω |
|
| ● 4 mA to 20 mA |
Yes |
|
| — Input resistance (4 mA to 20 mA) |
50 Ω |
|
| Input ranges (rated values), thermocouples |
|
|
| ● Type B |
|
Yes |
| — Input resistance (Type B) |
|
10 MΩ |
| ● 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 L |
|
Yes |
| — Input resistance (Type L) |
|
10 MΩ |
| ● Type N |
|
Yes |
| — Input resistance (Type N) |
|
10 MΩ |
| ● Type R |
|
Yes |
| — Input resistance (Type R) |
|
10 MΩ |
| ● Type S |
|
Yes |
| — Input resistance (Type S) |
|
10 MΩ |
| ● Type T |
|
Yes |
| — Input resistance (Type T) |
|
10 MΩ |
| ● Type U |
|
Yes |
| — Input resistance (Type U) |
|
10 MΩ |
| Input ranges (rated values), resistance thermometer |
|
|
| ● Ni 100 |
|
Yes |
| — Input resistance (Ni 100) |
|
10 MΩ |
| ● Pt 100 |
|
Yes |
| — Input resistance (Pt 100) |
|
10 MΩ |
| ● Pt 200 |
|
Yes |
| — Input resistance (Pt 200) |
|
10 MΩ |
| Cable length |
|
|
| ● shielded, max. |
200 m |
200 m; TC: 50 m |
| Analog value generation for the inputs |
|
|
| Integration and conversion time/resolution per channel |
|
|
| ● Resolution with overrange (bit including sign), max. |
16 bit; 10 bit to 15 bit + sign |
16 bit; 10 bit to 15 bit + sign |
| ● Integration time, parameterizable |
Yes; 2.5 to 100 ms |
Yes; 2.5 to 100 ms |
| ● Interference voltage suppression for interference frequency f1 in Hz |
10 to 400 Hz |
10 to 400 Hz |
| Encoder |
|
|
| Connection of signal encoders |
|
|
| ● for current measurement as 2-wire transducer |
Yes |
Yes |
| ● for current measurement as 4-wire transducer |
Yes |
Yes |
| Errors/accuracies |
|
|
| Operational error limit in overall temperature range |
|
|
| ● Current, relative to input range, (+/-) |
0.45 % |
|
| ● Resistance thermometer, relative to input range, (+/-) |
|
0.04 %; 0.09 to 0.04% |
| Basic error limit (operational limit at 25 °C) |
|
|
| ● Current, relative to input range, (+/-) |
0.1 % |
|
| ● Resistance thermometer, relative to input range, (+/-) |
|
0.008 %; 0.018 … 0.008% |
| Interrupts/diagnostics/status information |
|
|
| Diagnostics function |
Yes |
Yes |
| Diagnoses |
|
|
| ● Diagnostic information readable |
Yes |
Yes |
| ● Overrange |
Yes |
Yes |
| ● Wire-break in signal transmitter cable |
Yes |
Yes |
| ● Short-circuit of the signal encoder cable |
Yes |
Yes |
| Diagnostics indication LED |
|
|
| ● Group error SF (red) |
Yes |
Yes |
| ● Channel fault indicator F (red) |
Yes |
Yes |
| Ex(i) characteristics |
|
|
| Module for Ex(i) protection |
Yes |
Yes |
| maximum values for connecting terminals for gas group IIC |
|
|
| ● Uo (no-load voltage), max. |
25.2 V |
5.9 V |
| ● Io (short-circuit current), max. |
68.5 mA |
28.8 mA |
| ● Po (power output), max. |
431 mW |
41.4 mW |
| ● Co (permissible external capacity), max. |
90 nF |
43 µF |
| ● Lo (permissible external inductivity), max. |
7.5 mH |
40 mH |
| Potential separation |
|
|
| Potential separation analog inputs |
|
|
| ● between the channels |
Yes |
No |
| ● between the channels and backplane bus |
Yes |
Yes |
| Standards, approvals, certificates |
|
|
| Use in hazardous areas |
|
|
| ● ATEX marking |
ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc |
ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc |
| ● FM marking |
Class I, Division 2, Group A, B, C, D T4 |
Class I, Division 2, Group A, B, C, D T4 |
| ● Test number PTB |
Ex-96.D.2092X |
Ex-96.D.2108X |
| Ambient conditions |
|
|
| Ambient temperature during operation |
|
|
| ● max. |
60 °C |
60 °C |
| connection method / header |
|
|
| required front connector |
20-pin |
20-pin |
| Dimensions |
|
|
| Width |
40 mm |
|
| Height |
125 mm |
|
| Depth |
120 mm |
|
| Weights |
|
|
| Weight, approx. |
290 g |
210 g |
