
Analog modules
5.22 Analog input module SM 431; AI 16 x 13 Bit (6ES7431-0HH00-0AB0)
S7-400 Automation System Module Data
288 Reference Manual, Edition 09/2009, A5E00850736-06
Formation of analog values
Measuring principle Integrating
Integration/conversion time/resolution (per channel) (Does not go into the response time)
Programmable
Yes
Noise suppression f1 in Hz
60 / 50
Integration time in ms
50 / 60
Basic conversion time in ms
55 / 65
Resolution (including overshoot range)
13 bits
Measured value smoothing Not supported
Basic execution time of the module, in ms (all
channels enabled)
880 / 1040
Noise suppression, error limits
Noise suppression for f = nx (f1 ±1%), (f1 = interference frequency) n = 1, 2, ...
Common-mode interference (UCM <2 V)
> 86 dB
Series-mode interference (peak value of
disturbance < nominal input range)
> 60 dB
Crosstalk between inputs > 50 dB
Operational limit (across temperature range, relative to input range)
Voltage input
– ± 1 V
– ± 10 V
– 1 to 5 V
± 0,65 %
± 0,65 %
± 1 %
Current input
– ± 20 mA
– 4 to 20 mA
± 0,65 %
± 0,65 %
Basic error limit (operational error limit at 25° C, relative to input range)
Voltage input
– ± 1 V
– ± 10 V
– 1 to 5 V
± 0,25 %
± 0,25 %
± 0,5 %
Current input
– ± 20 mA
– 4 to 20 mA
± 0,25 %
± 0,25 %
Temperature error (relative to input range) ± 0,01 %
Linearity error (relative to input range) ± 0,05 %
Repetition accuracy (in transient state at 25° C,
relative to input range)
± 0,01 %
Status, interrupts, diagnostics
Interrupts None
Diagnostic functions None
Injection of substitution values No
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