Siemens SIMATIC S5-100U, System Manual

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S5-100U Analog Value Processing
If you use a four-wire transducer connect it as shown in Figure 11-6.
Figure 11-6. Connection for Four-Wire Transducers (6ES5 464-8ME11)
a a a
a a a
a a a
a a a
1
a a a
a a a
a a a
a a a
3
a a a a a
a a a a a
a a a a a
a a a a a
10
a a a a
a a a a
a a a a
a a a a
7
a a a
a a a
a a a
a a a
9
a a a
a a a
a a a
a a a
2
a a a a
a a a a
a a a a
a a a a
4
a a a a
a a a a
a a a a
a a a a
6
a a a
a a a
a a a
a a a
8
a a a
a a a
a a a
a a a
5
a a a
a a a
a a a
a a a
U
Four-wire transducer
a a a
a a a
a a a
a a a
a a a
-
a a a a a
a a a a a
a a a a a
a a a a a
a a a a a
+
Four-wire transducers require their own power supply. Connect the “+” pole of the four-wire
transducer to the corresponding “-” pole of the terminal block (a connection technique that is the
opposite of the two-wire transducer). Connect negative terminals of the four-wire transducer to
terminal two of the terminal block.
Inputs 4, 6, 8, and 10 of the analog input module 464-8ME11 are connected internally via shunt
resistors. Because of the internal shunt resistors, broken wire signaling is not possible.
EWA 4NEB 812 6120-02b
11-5