SBC PCD2.M5 Series - Page 187

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Analogue output modules, electrically isolated
Input/output (I/O) modules
6-76
6
Typicaloutputrange(withoutcomponenttolerances):
W605: -0.26V…+10.36V(insteadof0…+10V)
W615: -0mA…+21.4mA(insteadof0…+20mA)
W625: -10.62V…10.36V(insteadof-10…+10V)
Thisrangeisbrokendownona10bitscale(1024steps),asbefore.Theresultisthe
following LSB resolution:
W605: 1 LSB = 10.38 µV
W615: 1 LSB = 21.7 µA
W625: 1 LSB = 20.75 µV
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outputnegativecurrents).
This extended range does depend on the tolerances of the components, and cannot
be guaranteed.
Connection concept for voltage and current inputs
The voltage and current output signals are connected directly to the 14-pole terminal
block(O0…O5/O3and-).
The following connection diagram shows a typical wiring layout for:
● voltage outputs with the PCD2.W605 and .W625 modules or
● currentoutputsforthePCD2.W615module
Connection for 0..10 V (W605) or -10 V...+10 V (W625):
D
A
5
U
R ≥ 3 kΩ
13
4
(A2)
No external supply is needed for voltage outputs.