Potentiometer Setting; Rwg Electronic Position Transmitter - AUMA SAEx 07.2 Operation Manual

SAEx 07.2 SAEx 16.2 / SAREx 07.2
9.7.1.

Potentiometer setting

Information
9.8.

RWG electronic position transmitter

Technical data
Setting components
SAREx 16.2
Figure 26: View on control unit
[1] Potentiometer
Due to the ratio of the reduction gearing, the complete resistance range/stroke is not
always covered. Therefore, external adjustment (setting potentiometer) must be provided.
1. Move valve to end position CLOSED.
2. Turn potentiometer [1] clockwise to the stop.
End position CLOSED corresponds to 0 %
End position OPEN corresponds to 100 %
3. Turn potentiometer [1] slightly in opposite direction.
4. Perform fine-tuning of the zero point at external setting potentiometer (for remote
indication).
Option
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 0 20 mA or 4
Table 10: RWG 4020
Data
Output current I
a
1)
Power supply U
V
Max. current consumption
Max. load R
B
Impact of power supply
Load influence
Temperature impact
2)
Ambient temperature
Transmitter potentiometer
1) Power supply possible via: AC, AM controls or external power supply
2) Depending on temperature range of the actuator: Refer to name tag
The RWG is housed in the actuator switch compartment. The switch compartment must
be opened to perform any settings. Refer to <Switch compartment: open>.
Setting is made via three potentiometers [1], [2] and [3].
20 mA.
3-wire and 4-wire systems
0 20 mA, 4 20 mA
24 V DC (18 32 V)
24 mA at 20 mA output current
600 Ω
0.1 %/V
0.1 %/(0 600 Ω)
< 0.3 ‰/K
76 °F to 176 °F ( 60 °C to +80 °C)
Commissioning
2-wire system
4 20 mA
14 V DC + (I x R ), max. 30 V
B
20 mA
(U 14 V)/20 mA
V
0.1 %/V
0.1 %/100 Ω
5 kΩ
37