Siemens S5-135U/155U System Manual page 416

Analog Input/Output Modules
Front Connector
Voltage or current-input resistance thermometer or connection of two-wire
Assignments
transducer
Front Strip
Connection of
Process Signal
Pin
Lines
F+
1
F–
2
L+
3
4
+
Ch.0
–
1)
6
8
+
Ch.1
–
10
1)
13
+
Ch.2
–
15
1)
17
+
Ch.3
–
1) 19
4) L–
L– 21
Comp.– 22
Comp.+
23
24
L+
3)
+ 25
2)Ch.4
T
L+
1)
– 27
L–
+
29
2)Ch.5
T
1) 31
–
+
34
2)Ch.6
T
–
1) 36
+
38
2)Ch.7
T
–
40
1)
I+
41
c
I– 42
c
Figure 9-11 Front Connector Assignments
1) Observe permissible potential difference between sensor ground and reference potential of modules or between
sensor grounds.
2) Two-wire transducer
3) Only required to switch off the tripping current without broken wire detection; 0 V at L-.
4) Connect L- to the central ground point (reference potential).
9-34
Connection of
Block Diagram
Process Signal
of the Modules
Lines
t
F–
ADU
4)
I
trip
L–
Comp.–
Comp.+
L+
3)
#
I
c+
I
const. I
c–
Front Strip Block Diagram
of the Modules
Pin
F+
1
t
2
L+
3
4
Ch.0
6
8
Ch.1
10
13
Ch.2
15
17
Ch.3
19
I
L–
21
22
23
24
25
Ch.4
27
29
Ch.5
31
34
Ch.6
36
38
Ch.7
40
41
I
42
const.
C79000-G8576-C199-06
ADU
trip
#
System Manual