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Analog Value Processing
Figure 10-21 shows the connection of transducers to the 466 analog input module.
When connecting transducers, you must take account of the following conditions:
V
+V
< 12 V
I
CM
+
V
I2
-
+
U
CM2
-
+
V
I1
-
+
U
CM1
-
I
:
Input voltage
I1/2
I
:
Common mode
CM1/2
I
:
Isolating voltage
ISO
:
Equipotential: this potential is determined by the sensor reference
potential (external reference potential)
Figure 10-21. Connecting Transducers to the 466 Analog Input Module
Note
See Section 3.5 for information on shielding analog signal lines!
10-32
(i.e. the sum of the voltage measuring set and the common mode must
be less than 12 V; current measuring ranges correspond to a voltage of
2.5 V)
466 Analog input module
M+
M -
MUX
M+
M -
Mext
V
ISO
(Differential Measurement)
S5-115U Manual
Reference bus
EWA 4NEB 811 6130-02b
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