Commissioning (Optional Equipment Settings); Potentiometer; Potentiometer Setting; Rwg Electronic Position Transmitter - AUMA SAEx 07.2 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
11) Power supply possible via: AC, AM actuator controls or external power supply
42
The potentiometer is used as travel sensor and records the valve position.
ment must be opened to perform any settings. Refer to
[} 37].
Setting is made via potentiometer [1].
Figure 43: 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 OPEN 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 17: RWG 4020
Data
Output current I
a
11)
Power supply U
V
Max. current consumption
Max. load R
B
Impact of power supply
Load influence
Temperature impact
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
[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