Saia-Burgess Controls AG
Manual
Manual PCD 1 / PCD 2 Series
│ Document 26
/
737 E
N22 │ 2013-11-26
5
Input/output (I/O) modules
5-57
Analogue input modules
The 4 built-in potentiometers for setting the amplification are not accessible to the
user and must
not
be adjusted.
Not user
accessible
Substitution module
Basic module
Adjustment
of offset
Terminals
Basic module
Bus connector
I/O bus interface
+15 V
A/D converter
Adjustment of amplification
(not for users)
Digital value = 4095
Temperature = +150°C
Analogue multiplexer
Input amplifier
Adjustment of offset
Digital value = 0 --> Temperature = –50°C
Input filter
Screw terminals
9
8
7
6
5
4
3
2
1
0
-E0+
-E1+
-E2+
-E3+
Substitution module
-15V
Current sources and
linearization
J1
J2
Input 1
Input 0
Input 2
Input3
Ground
The negative terminals for each input are connected to the ground.
On this circuit board there are components that are sensitive to electrostatic
discharges. For further information, refer to
Appendix B, “Icons”
.