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)
Analog value creation
Integrations 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
60 / 50 Hz none / 400 / 60 / 50 Hz 60 / 50 Hz 60 / 50 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 2-conductor connection
Yes; Line resistances are
also measured
Yes; Line resistances are
also measured
Yes; Line resistances are
also measured
• for resistance measurement
with 3-conductor connection
Yes; Line resistances are
also measured
Yes; Line resistances are
also measured
Yes
• for resistance measurement
with 4-conductor connection
Yes Yes Yes
Errors/accuracies
Operational limit in overall temperature
range
• Voltage, relative to input area +/- 0,65 %;
1.0% at 1 to 5 V;
0.65% at +/-1 V, +/-10 V
+/- 0,7 %;
+/-0.7% at +/-1 V;
+/-0.9% at +/-10 V,
1 to 5 V
+/- 1 %;
+/-1.0% at +/-1 V;
+/-0.6% at +/-10 V;
+/-0.7% at 1 to 5 V
+/- 0,38 %;
+/-0.38% at +/-80 mV;
+/-0.35% at +/-250 mV,
+/-500mV, +/-1 V, +/-2,5 V,
+/-5 V, 1 to 5 V, +/-10 V
• Current, relative to input area
+/- 0,65 % +/- 0,8 %;
at +/-20 mA, 4 to 20 mA
+/- 1 %;
at +/-20 mA, 4 to 20 mA
+/- 0,35 %;
+/-20 mA, 0 to 20 mA,
4 to 20 mA
• Impedance, relative to input area
+/- 1 % +/- 1,25 %; 0 to 500 ohms
(4-conductor measurement,
in range of 600 ohms)
+/- 0,5 %
• Resistance-type thermometer,
relative to input area
+/- 0,5 %
6ES7 431-0HH00-0AB0 6ES7 431-1KF20-0AB0 6ES7 431-1KF00-0AB0 6ES7 431-1KF10-0AB0
Kap_06_eng.book Seite 66 Donnerstag, 2. Mai 2013 4:16 16
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