Baelz Automatic BA 375-E42 - Details on DIP Switches

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Motorized Rotary Actuator baelz 375-E42
7.4.1 Details on DIP switches
DIP1 and DIP2:
are interpreted together:
DIP1:0=voltage→ DIP2:0=0-10Vor1=2-10V.
DIP1:1=current→ DIP2:0=0-20mAor1=4-20mA.
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:
DIPswitch3congurestheanalogueoutputsAO1andAO2(seewiringdiagram,Fig. 10, page
20).DIPswitch3denesthescalingofthetwoanalogueoutputs.WhenDIP3=0,AO1is
setto0-10VandAO2to0-20mA(factorysetting),whenDIP3=1,AO1issetto2-10Vand
AO2to4-20mA.InModbusmodeAO1andAO2canbeconguredseparately.
Using 2-10 V / 4-20 mA enables clear identication 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 closes when actuator turns anticlockwise.
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.
Thedirectionofoperationmustnotbeconfusedwithheating/cooling!Heatinginstandard
mode is carried out with DIP switches 7, 8 and 9 set to "0". Cooling in standard mode is
carried out with DIP switches 7, 8 and 9 set to "1". Split-range can be combined with heating in
standard mode, but not with cooling. In Modbus mode, split-range can be combined with both
heating and cooling.
DIP5:
Savesthecurrentpositionasswitchingposition"2EZ-1"whenswitchedfrom0to1.No
function is assigned to switching from 1 to 0. Even if DIP 5 is left in position 1 when the 7020A
positioner is switched on, the current position will not be saved.
DIP6:
Savesthecurrentpositionasswitchingposition"2EZ-2"whenswitchedfrom0to1.No
function is assigned to switching from 1 to 0. Even if DIP 6 is left in position 1 when the 7020A
positioner is switched on, the current position will not be saved.
DIP7, DIP8 and DIP9:
ThesethreeDIPswitchesworktogethertodenethesplitrangefunctionatanalogueinput2
(AI2).
FUNCTION DIP7 DIP8 DIP 9
Linear, 1:1 0 0 0
Split Range: split 50 %, offset 0 % 1 0 0
Split Range: split 50 %, offset 50 % 0 1 0
Split Range: split 33.3 %, offset 0 % 1 1 0
Split Range: split 33.3 %, offset 33.3 % 0 0 1
Split Range: split 33.3 %, offset 66.6 % 1 0 1
11-point characteristic 0 1 1
Inverted: 0 becomes 100 and 100 becomes 0 % 1 1 1
Tip: