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| 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 | ||
| Power supply to the transmitters | ||
|
● Rated value (DC)
|
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 |
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