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

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

WARNING
Technical data
The potentiometer is used as travel sensor and records the valve position.
ment must be opened to perform any settings. Refer to Open switch compartment.
Setting is made via potentiometer [1].
Figure 44: 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 4 – 20 mA.
RWG 5020 Ex electronic position transmitter is designed as an intrinsically safe
electric circuit Ex ib according to IEC 60079-11.
Intrinsically safe electric circuit, risk of explosion!
Risk of death or serious injury.
à Observe the applicable installation regulations relating to explosion protection
when connecting.
Table 11: RWG 5020
Data
Output current I
a
Commissioning (optional equipment settings)
[1]
2-wire system
4 – 20 mA
39