Baelz Automatic BA 373-E45 - Page 24

24 | 36W. Baelz & Sohn GmbH & Co. · Koepffstrasse 5 · 74076 Heilbronn · Germany · www.baelz.de Seite | Page
Motorized Linear Actuator baelz 373-E45
DIP10:
Anactuatorcharacteristiccanbeusedindirectlytochangeavalvecharacteristic.If,for
example,thevalvehasanequalpercentagecharacteristic,aninverseequalpercentage
actuatorcharacteristiccanbeusedtogeneratearesultinglinearcharacteristic,seeillustration
below.
Theactuatorcharacteristic(DIP10)canalsobecombinedwiththecharacteristicswhich
canbeselectedusingDIPs7,8and9(e.g.splitrange).Themicrocontrollerrstprocesses
thecharacteristicdenedbyDIPs7,8and9andsubsequentlythecharacteristicdenedby
DIP10.
InModbusmode,twofurtheractuatorcharacteristicscanbeselected:equalpercentageand
quadraticinverseequalpercentage.
DIP11:
DIPswitch11denesthemodeofoperation:1=Modbusmode,0=standardmode.
Standardmodeisusedtoapplypredenednormalsettings.
DIP12:
Startsaninitializationrunwhenswitchedfrom0to1.IfDIP12isleftinposition1whenthe
7020Apositionerisswitchedon,aninitializationrunwillnotbestartet.
AslongasDIP12issetto1,errorsandalarmsoccurringduringnormalpositioneroperation
willnotbeshown.Thisenableserrorsoccurringduringinitializationtobedistinguishedfrom
errorsduringnormalpositioneroperation.SwitchDIP12backto0aftertheinitializationrun
(afterhavinganalysedpossibleerrorcodes)toshowanyerrorsoccurringinnormalpositioner
operationontheredLED.Seealsosection8.5.2"Initializationrun".
shut
valve2,offset50%[010]*
valve1,offset0%[100]*
valve1,offset0%[110]*
valve2,offset33,3%[001]*
valve1,offset66,6%[101]*
input signal
valve position
open
shut
0% 100%
50%
33,3%
66,6,%
100%
0%
100%
0%
shut
shut
open open
shut
open
open
0% 100%
0% 100%
Splitrange
split50%
Linear
Splitrange
split33%
11-point
characteristic
Inverselinear
[000]
[011]* [111]*
Fig. 11: Graphical illustration of selection of functions by DIP switches 7, 8 & 9
1
Desired
characteristic
Equalpercentage
Quadratic
Linear
Equalpercentage
Linear
DIP-switch 10
Characteristic of the
valve
Characteristic of the
actuator
Effective at valve
=factorysetting
Travel
Travel
Travel
Travel
Travel
Signal
Signal
Signal
Signal
Signal
Signal
Signal
Signal
Signal
Signal
TravelTravelTravelTravel
a
Travel
1
0
10
0
10
1
0
10
actuatorcharacteristic
only selectable in
Modbusmode
actuatorcharacteristic
only selectable in
Modbusmode