SM 431 analog input module Siemens

Область применения



Analog input modules can be used to connect the control to analog process signals. They are suitable for the connection of voltage and current sensors, thermocouples, resistors and resistance thermometers.

Обзор


  • Analog inputs for the SIMATIC S7-400
  • For connection of voltage and current sensors, thermocouples, resistors and resistance thermometers
  • Resolution from 13 to 16 bit

Дизайн



The analog input modules have the following mechanical features:

  • Compact configuration:
    The rugged plastic housing contains:
    • Slot for front connector
    • Labeling strips
  • Simple assembly
  • User-friendly wiring:
    The modules are wired by means of a plug-in front connector.

Функции



Analog input modules convert analog signals from the process into digital values for internal processing within the S7-400.

The modules feature the following:

  • Resolution from 13 to 16 bit
  • Different measurement ranges
  • Alarm functionality
  • Diagnostics

Технические данные



Order number

6ES7431-0HH00-0AB0

6ES7431-1KF20-0AB0

6ES7431-1KF00-0AB0

6ES7431-1KF10-0AB0

SIMATIC S7-400, ANALOG INPUT

SIMATIC S7-400, SM 431

SIMATIC S7-400, SM 431

SIMATIC S7-400, SM 431

Supply voltage

 

 

 

 

Load voltage L+

 

 

 

 

  • ● Rated value (DC)

24 V; Only required for supplying 2-wire transmitters

24 V; Only required for supplying 2-wire transmitters

not necessary

24 V; Only required for supplying 2-wire transmitters

  • ● Reverse polarity protection

Yes

Yes

Yes

Input current

 

 

 

 

from load voltage L+ (without load), max.

400 mA; for 16 connected, fully controlled 2-wire transmitters

200 mA; for 8 connected, fully controlled 2-wire transmitters

200 mA; for 8 connected, fully controlled 2-wire transmitters

from backplane bus 5 V DC, max.

100 mA

1 000 mA

350 mA

600 mA

Power loss

 

 

 

 

Power loss, typ.

2 W

4.9 W

1.8 W

3.5 W

Hardware configuration

 

 

 

 

Slots

 

 

 

 

  • ● required slots

1

1

1

1

Analog inputs

 

 

 

 

Number of analog inputs

16

8

8

8

  • ● For voltage/current measurement

16

8

8

8

  • ● For resistance measurement

4

4

4

permissible input voltage for voltage input (destruction limit), max.

20 V; 20 V DC permanent, 75 V DC for max. 1 s (duty factor 1:20)

18 V; 18 V continuous, 75 V for 1 ms (mark to space ratio 1:20)

50 V

18 V; 18 V continuous, 75 V for 1 ms (mark to space ratio 1:20)

permissible input current for current input (destruction limit), max.

40 mA

40 mA; Permanent

50 mA; 40 mA continuous

40 mA; Permanent

Input ranges (rated values), voltages

 

 

 

 

  • ● 1 V to 5 V

Yes

Yes

Yes

Yes

  • ● -1 V to +1 V

Yes

Yes

Yes

Yes

  • ● -10 V to +10 V

Yes

Yes

Yes

Yes

  • ● -2.5 V to +2.5 V

Yes

  • ● -250 mV to +250 mV

Yes

  • ● -5 V to +5 V

Yes

  • ● -500 mV to +500 mV

Yes

  • ● -80 mV to +80 mV

Yes

Input ranges (rated values), currents

 

 

 

 

  • ● 0 to 20 mA

Yes

  • ● -20 mA to +20 mA

Yes

Yes

Yes

  • ● 4 mA to 20 mA

Yes

Yes

Yes

Yes

Input ranges (rated values), thermocouples

 

 

 

 

  • ● Type B

Yes

  • ● Type E

Yes

  • ● Type J

Yes

  • ● Type K

Yes

  • ● Type L

Yes

  • ● Type N

Yes

  • ● Type R

Yes

  • ● Type S

Yes

  • ● Type T

Yes

  • ● Type U

Yes

Input ranges (rated values), resistance thermometer

 

 

 

 

  • ● Ni 100

Yes

  • ● Ni 1000

Yes

  • ● Pt 100

Yes

  • ● Pt 1000

Yes

  • ● Pt 10000

Yes

  • ● Pt 200

Yes

  • ● Pt 500

Yes

Input ranges (rated values), resistors

 

 

 

 

  • ● 0 to 150 ohms

Yes

  • ● 0 to 300 ohms

Yes

  • ● 0 to 48 ohms

Yes

  • ● 0 to 600 ohms

Yes

Yes

Yes

  • ● 0 to 6000 ohms

Yes; Usable up to 5000 Ohm

Thermocouple (TC)

 

 

 

 

Temperature compensation

 

 

 

 

  • — internal temperature compensation

No

  • — external temperature compensation with compensations socket

Yes

  • — external temperature compensation with Pt100

Yes

  • — dynamic reference temperature value

Yes

Characteristic linearization

 

 

 

 

  • ● parameterizable

Yes

  • — for thermocouples

Type B, E, J, K, L, N, R, S, T, U

  • — for resistance thermometer

Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000

Cable length

 

 

 

 

  • ● shielded, max.

200 m

200 m

200 m

200 m; 50 m with thermocouples and input ranges <= 80 mV

Analog value generation

 

 

 

 

Integration and conversion time/resolution per channel

 

 

 

 

  • ● Resolution with overrange (bit including sign), max.

13 bit

14 bit; 14 / 14 / 14

13 bit

14 bit; with activated filtering: 16 bits

  • ● Integration time, parameterizable

Yes

Yes

Yes

Yes

  • ● Basic conversion time (ms)

55 / 65 ms

52 µs

23 / 25 ms

20.1 / 23.5 ms

  • ● Integration time (ms)

50 / 60 ms

16,7 / 20 ms

16,7 / 20 ms

  • ● Basic conversion time, including integration time (ms)

  • — additional conversion time for wire-break monitoring

4,3 ms

  • — additional conversion time for resistance measurement

40.2 / 47 ms

  • — additional conversion time for wire-break monitoring and resistance measurement

5,5 ms

  • ● Interference voltage suppression for interference frequency f1 in Hz

50 / 60 Hz

none / 400 / 60 / 50 Hz

50 / 60 Hz

50 / 60 Hz

Encoder

 

 

 

 

Connection of signal encoders

 

 

 

 

  • ● for current measurement as 2-wire transducer

Yes

Yes; with external transmitter supply

Yes

  • ● for current measurement as 4-wire transducer

Yes

Yes

Yes

Yes

  • ● for resistance measurement with two-wire connection

Yes; Line resistances are also measured

Yes; Line resistances are also measured

Yes; Line resistances are also measured

  • ● for resistance measurement with three-wire connection

Yes; Line resistances are also measured

Yes; Line resistances are also measured

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