SIMATIC S7-400
Analog modules
SM 431 analog input module
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Siemens ST 70 · 2013
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Technical specifications (continued)
Input ranges (rated values),
resistance thermometers
• Ni 100 Yes Yes
• Ni 1000
Yes Yes; Different characteristics
selectable: Europe/U.S.
• Pt 100
Yes Yes
• Pt 1000
Yes Yes
• Pt 200
Yes Yes
• Pt 500
Yes 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
• 0 to 6000 ohms Yes; Usable up to 5000 Ohm
Thermocouple (TC)
• for thermocouples Type B, E, J, K, L, N, R, S, T, U Type B, E, J, K, L, N, R, S, T, U
• Temperature compensation
- internal temperature compensation Yes
- external temperature compensa-
tion with compensations socket
Yes Yes
- external temperature
compensation with Pt100
Yes
- dynamic reference temperature
value
Yes Yes
Resistance thermometer (RTD)
• Characteristic linearization
- for resistance thermometer Pt100, Pt200, Pt500, Pt1000, Ni100,
Ni1000
Pt100, Pt200, Pt500, Pt1000, Ni100,
Ni1000; different characteristics
selectable (Europe/U.S.)
Characteristic linearization
• Parameterizable Yes Yes Yes
Cable length
• Cable length, shielded, max. 200 m; 50 m with thermocouples and
input ranges <= 80 mV
200 m 200 m; 50 m with thermocouples and
input ranges +/-80 mV
Analog value creation
Integrations and conversion time/
resolution per channel
• Resolution with overrange
(bit including sign), max.
16 bit; 16 / 16 / 16 16 bit 16 bit
• Integration time, parameterizable
Yes Yes Yes
• Basic conversion time, ms
6 / 20.1 / 23.5 ms 10 / 16.7 / 20 / 100 8 / 23 / 25 ms
• Integration time, ms
2.5 / 16.7 / 20 ms 2.5 / 16.7 / 20 / 100 ms 20 ms at 50 Hz
(entire module incl. wire break)
• Basic conversion time,
including integration time, ms
- additional conversion time
for wire break monitoring
4.3 / 4.3 / 4.3 ms 110 ms / 4 ms
- additional conversion time
for resistance measurement
12 / 40.2 / 47 ms
- additional conversion time for wire
break monitoring and resistance
measurement
5.5 ms 1 ms (module) none
• Interference voltage suppression
for interference frequency f1 in Hz
400 / 60 / 50 Hz 400 / 60 / 50 / 10 Hz none/ 60 / 50 Hz
6ES7 431-7QH00-0AB0 6ES7 431-7KF00-0AB0 6ES7 431-7KF10-0AB0
Kap_06_eng.book Seite 69 Donnerstag, 2. Mai 2013 4:16 16
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