BA_373-E07_04_DEF_MJ_1821
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Motorized Linear Actuator baelz 373-E07
7.4.1 Details on DIP switches
DIP1 and DIP2:
are interpreted together:
DIP1:0=voltage→ DIP2:0=0-10Vor1=2-10V.
DIP1:1=current→ DIP2:0=0-20mAor1=4-20mA.
Attention
Either a voltage source can be connected to the U-terminal or a current
source to the I-terminal. Never connect both at the same time.
DIP3:
DIPswitch3congurestheanalogueoutputsAO1andAO2(seewiringdiagram,Fig.24,page
22
).DIPswitch3denesthescalingofthetwoanalogueoutputs.WhenDIP3=0,AO1is
setto0-10VandAO2to0-20mA(factorysetting),whenDIP3=1,AO1issetto2-10Vand
AO2to4-20mA.InModbusmodeAO1andAO2canbeconguredseparately.
Using 2-10 V / 4-20 mA enables clear identication of a loss of signal (= 0 V / 0 mA).
DIP4:
DIP switch 4 changes the direction of operation of the actuator.
The direction of operation can only be changed if the unit has been initialized. Until the unit has
been initialized, the following setting applies: Valve closed when actuator spindle extended.
There can also be no change in the direction of operation during an initialization run, whether
or not the unit was already initialized before starting the current initialization run.
Thedirectionofoperationmustnotbeconfusedwithheating/cooling!Heatinginstandard
modeiscarriedoutwithDIPswitches7,8and9setto"0".Coolinginstandardmodeis
carriedoutwithDIPswitches7,8and9setto"1".Split-rangecanbecombinedwithheatingin
standard mode, but not with cooling. In Modbus mode, split-range can be combined with both
heating and cooling.
DIP5:
Savesthecurrentpositionasswitchingposition"2EZ-1"whenswitchedfrom0to1.No
function is assigned to switching from 1 to 0. Even if DIP 5 is left in position 1 when the 7020
positioner is switched on, the current position will not be saved.
DIP6:
Savesthecurrentpositionasswitchingposition"2EZ-2"whenswitchedfrom0to1.No
function is assigned to switching from 1 to 0. Even if DIP 6 is left in position 1 when the 7020
positioner is switched on, the current position will not be saved.
DIP7, DIP8 and DIP9:
ThesethreeDIPswitchesworktogethertodenethesplitrangefunctionatanalogueinput2
(AI2).
FUNCTION DIP7 DIP8 DIP 9
Linear, 1:1 0 0 0
SplitRange:split50%,oset0% 1 0 0
SplitRange:split50%,oset50% 0 1 0
SplitRange:split33.3%,oset0% 1 1 0
SplitRange:split33.3%,oset33.3% 0 0 1
SplitRange:split33.3%,oset66.6% 1 0 1
11-point characteristic 0 1 1
Inverted:0becomes100and100becomes0% 1 1 1
Tip: