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SG 04.2
SG 10.2
with actuator controls MEC 03.1
7.4.
RWG electronic position transmitter
Technical data
Delivery state
7.4.1.
Set measuring range
Setting elements
RWG electronic position transmitter records the valve position. On the basis of the
actual position value measured by the potentiometer (travel sensor), it generates a
current signal between 4
end positions OPEN and CLOSED within MEC 03.1 actuator controls.
Table 6: RWG
Data
Output current I
a
Power supply U
V
Max. current consumption
Max. load R
B
RWG electronic position transmitter is already set on delivery. In the factory, the 4
20 mA signal has been adjusted to the complete swing angle range between the
mechanical end stops OPEN and CLOSED.
The measuring range only has to be readjusted, if the swing angle set in the
factory has been enlarged.
The RWG is housed in the actuator switch compartment. The switch compartment
must be opened to perform any settings.
Setting is made via three potentiometers [1], [2] and [3].
Figure 23: View on the open switch compartment
[1]
Trimmer potentiometer max. (20 mA)
[2]
Trimmer potentiometer min. (4 mA)
[3]
Potentiometer (travel sensor)
For measuring range setting, voltage must be applied at the position transmitter.
1.
Move valve in direction CLOSE to the mechanical end stop.
2.
Connect measuring equipment for 4
The electric circuit (external load) must be closed (consider maximum load
R
), otherwise no value can be measured.
B
3.
Turn potentiometer [3] clockwise to the stop.
4.
Turn potentiometer [3] slightly in opposite direction.
20 mA. The signal will be automatically synchronised to
2-wire system
4
20 mA
14 V DC + (I x R
20 mA
(U
14 V)/20 mA
V
⇨page 21, Switch compartment: open/close
20 mA to XG2.
Commissioning
), max. 30 V
B
25
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