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.
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