Article number |
6ES7331-7NF10-0AB0
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SIMATIC S7-300, Analog input SM 331, isolated, 8 AI; +/-5/10V, 1-5 V, +/-20 mA, 0/4 to 20 mA, 16 bit, Single rooting (60 V COM.), 4-channel operation: 10 ms, 8-channel operation: 23-95ms, 1x 40-pole |
Supply voltage |
Load voltage L+ |
● Rated value (DC) |
24 V |
● Reverse polarity protection |
Yes |
Input current |
from load voltage L+ (without load), max. |
200 mA |
from backplane bus 5 V DC, max. |
100 mA |
Power loss |
Power loss, typ. |
3 W |
Analog inputs |
Number of analog inputs |
8 |
permissible input voltage for voltage input (destruction limit), max. |
75 V; 35 V continuous, 75 V for max. 1 s (mark to space ratio 1:20) |
permissible input current for current input (destruction limit), max. |
40 mA |
Input ranges |
● Voltage |
Yes |
● Current |
Yes |
● Thermocouple |
No |
● Resistance thermometer |
No |
● Resistance |
No |
Input ranges (rated values), voltages |
● 0 to +10 V |
No |
● 1 V to 5 V |
Yes |
— Input resistance (1 V to 5 V) |
10 MΩ |
● 1 V to 10 V |
No |
● -1 V to +1 V |
No |
● -10 V to +10 V |
Yes |
— Input resistance (-10 V to +10 V) |
10 MΩ |
● -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) |
10 MΩ |
● -50 mV to +50 mV |
No |
● -500 mV to +500 mV |
No |
● -80 mV to +80 mV |
No |
Input ranges (rated values), currents |
● 0 to 20 mA |
Yes |
— Input resistance (0 to 20 mA) |
250 Ω |
● -10 mA to +10 mA |
No |
● -20 mA to +20 mA |
Yes |
— Input resistance (-20 mA to +20 mA) |
250 Ω |
● -3.2 mA to +3.2 mA |
No |
● 4 mA to 20 mA |
Yes |
— Input resistance (4 mA to 20 mA) |
250 Ω |
Input ranges (rated values), thermocouples |
● Type B |
No |
● Type C |
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 thermometer |
● Cu 10 |
No |
● Ni 100 |
No |
● Ni 1000 |
No |
● LG-Ni 1000 |
No |
● Ni 120 |
No |
● Ni 200 |
No |
● Ni 500 |
No |
● Pt 100 |
No |
● 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 |
No |
● 0 to 6000 ohms |
No |
Cable length |
● shielded, max. |
200 m |
Analog value generation for the inputs |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. |
16 bit; Unipolar: 15/15/15/15 bit; bipolar: 15 bit + sign/15 bit + sign/15 bit + sign/15 bit + sign |
● Integration time, parameterizable |
Yes; 23 / 72 / 83 / 95 ms |
● Basic conversion time (ms) |
10 ms (4-channel mode); 95/83/72/23 ms (8-channel mode) |
● Interference voltage suppression for interference frequency f1 in Hz |
400 / 60 / 50 Hz, combinations of 400, 60, 50 Hz |
Encoder |
Connection of signal encoders |
● for voltage measurement |
Yes |
● for current measurement as 2-wire transducer |
Yes; with external transmitter, current supply; possible with separate supply for transmitter |
● for current measurement as 4-wire transducer |
Yes |
Errors/accuracies |
Operational error limit in overall temperature range |
● Voltage, relative to input range, (+/-) |
0.1 % |
● Current, relative to input range, (+/-) |
0.1 % |
Basic error limit (operational limit at 25 °C) |
● Voltage, relative to input range, (+/-) |
0.05 % |
● Current, relative to input range, (+/-) |
0.05 % |
Interrupts/diagnostics/status information |
Diagnostics function |
Yes; Parameterizable |
Alarms |
● Diagnostic alarm |
Yes; Parameterizable |
● Limit value alarm |
Yes; Parameterizable all channels (end of cycle interrupt is also supported across modules) |
● Hardware interrupt |
Yes; Parameterizable, channels 0 to 7 (on exceeding limit value), at end of cycle |
Diagnoses |
● Diagnostic information readable |
Yes |
Diagnostics indication LED |
● Group error SF (red) |
Yes |
Potential separation |
Potential separation analog inputs |
● between the channels |
Yes |
● between the channels, in groups of |
2 |
● between the channels and backplane bus |
Yes |
● between the channels and the power supply of the electronics |
Yes |
Isolation |
Isolation tested with |
500 V AC |
connection method |
required front connector |
40-pin |
Dimensions |
Width |
40 mm |
Height |
125 mm |
Depth |
117 mm |
Weights |
Weight, approx. |
272 g |