Commissioning (Optional Equipment Settings); Potentiometer; Potentiometer Setting; Rwg Electronic Position Transmitter - AUMA NORM SA 25.1 Operation Instructions Manual

Commissioning (optional equipment settings)

11 Commissioning (optional equipment settings)

11.1 Potentiometer

Setting elements The potentiometer is housed in the actuator switch compartment. The switch compart-

11.1.1 Potentiometer setting

How to proceed 1. Move valve to end position CLOSED.

11.2 RWG electronic position transmitter

Technical data
40
The potentiometer is used as travel sensor and records the valve position.
ment must be opened to perform any settings. Refer to
[} 35].
Setting is made via potentiometer [1].
Figure 45: View of 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.
2. Turn potentiometer [1] clockwise to the stop.
ð End position CLOSED corresponds to 0 %.
ð 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).
RWG electronic position transmitter records the valve position. On the basis of the ac-
tual position value measured by the potentiometer (travel sensor), it generates a cur-
rent signal between 0 – 20 mA or 4 – 20 mA.
Table 12: 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
Open switch compartment
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
–60 °C to +80 °C
[1]
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