Sensor connection
● For voltage measurement
Possible
● For current measurement
– As 2-wire transducer
– As 4-wire transducer
Possible
Possible
● For resistance measurement
– With 2-wire connection
– With 3-wire connection
– With 4-wire connection
Possible; line resistance is also measured
Possible
Possible
● Load of 2-wire transducer
Maximum 750 Ω
Characteristic curve linearization Configurable
● For thermocouples
Type B, R, S, T, E, J, K, U, L, N
● For resistance thermometers
Pt 100, Pt 200, Pt 500, Pt 1000,
Ni 100, Ni 1000
Temperature compensation Yes, configurable
● Internal temperature compensation
No
● External temperature compensation with
compensating box
Possible
● External temperature compensation with Pt 100
Possible
● Compensation for definable reference junction
temperature
Possible
Technical unit for temperature measurement Degrees Celsius
Analog modules
5.20 Analog input module SM 431; AI 8 x 14 Bit (6ES7431-1KF10-0AB0)
S7-400 Automation System Module Data
246 Reference Manual, Ausgabe 11/2016, A5E00850736-08
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