Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
6-91
I/O modules PCD3
PCD3.W6x5
6
With this balance the nominal range (0…10 V) is now scaled 0…1023, making it
possible for the output value not to change on an increase of 1 LSB.
In the FBs the output values are not limited to 0…1023, so the whole range of the
module can be used.
For voltages > 10 V or currents > 20 mA, values >1023 may be output, and for
voltages < 0 V or
< –10 V, negative values may be output. (With the W615 it is not possible to out-
put negative currents).
This extended range does depend on the tolerances of the components, and can-
not be guaranteed.
Connection concept for voltage and current inputs
The voltage and current output signals are connected directly to the 14-pole termi-
nal block (A0 … A5 / A3 and -).
The following connection diagram shows a typical wiring layout for:
●voltage outputs with the PCD3.W605 and .W625 modules or
● currentoutputsforthePCD3.W615module
Connection for 0…10 V (PCD3.W605) or –10 V…+10 V (PCD3.W625):
4 (A2)
D
A
5
U
R
≥
3 k
Ω
Connection for 0…20 mA (PCD3.W615)
4 (A2)
5
I
R = 0...500 Ω
D
A
VOLTAGE
CONTROLLED
CURRENT
SOURCE
+ 24 V
DC
An external 24 VDC supply is required for current outputs.
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