Siemens S5-155U System Manual page 451

Front connector assignments
Voltage or current input
or connection of two-wire transducer
Connection of Front Strip
Process Signal
Lines Pin
F+
1
F-
2
L+
3
4
+
CH.0
-
5
1)
6
+
-
1) 7
8
+
-
1) 9
10
+
-
11
1)
13
+
-
1)
14
15
+
-
1) 16
17
+
-
1) 18
19
+
-
1)
20
22
Comp. +
23
Comp. -
24
3) L +
25
+
-
1)
26
27
+
-
1) 28
29
+
-
1) 30
31
+
-
1) 32
34
+
T
-
35
L+
2)
L-
36
+
T
-
37
2)
38
+
T
-
39
2)
40
+
T
- 41
2)
0 Vgnd(L-)
CH.15
Figure 9-26 Front Connector Assignments
System Manual
C79000-B8576-C109-03
Block Diagram
of the Module
F+
t
F-
L+
ADU
I
trip
Comp. +
Comp. -
3) L +
Two-wire transducers can only be connected in the 500 mV mode.
Connect L- to the central ground point (reference potential).
1)
Observe permissible potential difference between sensor and reference
potential of modules or between sensors.
2)
Two-wire transducer
3)
Only required to switch off the tripping current without broken wire detection;
(0 V at common ground point with L-).
The 465 Analog Input Module
Resistance thermometer
Connection of Front Strip Block Diagram
Process Signal of the Module
Lines Pin
1
2
3
4
CH.0
5
6
CH.1
7
8
CH.2
9
10
CH.3
11
13
CH.4
14
15
CH.5
16
17
CH.6
18
19
CH.7
20
22
23
24
25
CH.0
26
27
CH.1
28
29
CH.2
30
31
CH.3
32
34
CH.4
35
36
CH.5
37
38
CH.6
39
40
CH.7
41
0 Vgnd(L-)
t
ADU
I trip
9
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