Article number 6ES7331-7NF10-0AB0
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
last modified: 3/12/2024