Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
5-95
I/O modules PCD1|PCD2
PCD2.W5x0
5
PCD2.W500 Module, fully equipped
(with additional module plugged on)
Apart from the bus connector, DC-DC converter and terminals, the base module
carries the two input channels with the 2-pole jumper for unipolar or bipolar
operation and a number of preset potentiometers, which cannot be adjusted by the
user.
The plug-on module contains the two analogue outputs with the two 3-pole jump-
ers for the individual unipolar or bipolar operation of each output.
The module also works without the plug-on module.
Changing the jumpers
On this circuit board there are components that are sensitive to electrostatic
discharges. For further information, refer to
Appendix A1, “Icons”
.
Block diagram
Prot.
EMC
Diff.
Mux.
Prot.
EMC
Diff.
Input 0
Input 1
/4
/8
V Adj.
A
D
Bus
Ref.
2.5 V
+/- 10 V
A
D
Bus
Diff.
x2
Prot.
EMC
x2
x4
A
D
Bus
Diff.
x2
Prot.
EMC
x2
x4
Output 0
Output 1
Ref.
2.5 V
+/- 10 V
Programming
Reset
When the module or CPU powers up, both analogue outputs of the PCD2.W500
Module are set at the maximum value of +10 V (or a random value between 0 and
+10 V). If this should cause problems, XOB 16 (the cold-start routine) should be
used to initialize both these outputs to zero or any desired cold-start value.