
Analog modules
5.19 Analog input module SM 431; AI 8 x 13 Bit (6ES7431-1KF00-0AB0)
S7-400 Automation System Module Data
248 Reference Manual, Edition 09/2009, A5E00850736-06
5.19 Analog input module SM 431; AI 8 x 13 Bit (6ES7431-1KF00-0AB0)
5.19.1 Features
Overview
The analog input module SM 431; AI 8 x 13 Bit has the following features:
● 8 inputs for voltage/current measurement
● 4 inputs for resistance measurement
● Various measuring ranges, adjustable in parallel
● Resolution 13 bits
● Analog section isolated from CPU
● The maximum permissible common mode voltage between the channels and between
the reference potential of the connected sensors and M
ANA
is 30 VAC
Block diagram of the SM 431; AI 8 x 13 Bit
A
D
+5V
0V
CH1
CH7
CH0
+5V
-5V
0V
MV0+
MI0+
MI0+
M0-
CH1
CH7
F_CON
M
ANA
Front connectors
monitoring
Suppressor circuit, current jumpering
Bus control
Bus S7-400
Bus S7-400
Bus S7-400
Figure 5-23 Block diagram of the SM 431; AI 8 x 13 Bit
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