Set Measuring Range; Ewg 01.1 Electronic Position Transmitter - AUMA SQEx 05.2 Operation Instructions Manual

Commissioning (optional equipment settings)
Setting elements The RWG is housed in the actuator switch compartment. The switch compartment

11.2.1 Set measuring range

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

11.3 EWG 01.1 electronic position transmitter

Technical data
40
1) Power supply possible via: AC, AM actuator controls or external power supply
2) Depending on temperature range of the actuator: refer to name plate
must be opened to perform any settings. Refer to
Setting is made via three potentiometers [1], [2] and [3].
Figure 42: View on control unit when switch compartment is open
[2]
[1]
[4]
[1] Potentiometer (travel sensor)
[3] Potentiometer max. (20 mA)
[5] Measuring point (–) 0/4 – 20 mA
The output current (measuring range 0 – 20 mA) can be checked at measuring points
[4] and [5].
For setting, voltage must be applied at the position transmitter.
2. Connect measuring equipment for 0 – 20 mA to measuring points [4] and ]5]. If no
value can be measured:
Check whether external load is connected to customer connection XK (for stand-
ard wiring: terminals 23/24). Consider maximum load R
Or connect link across customer connection XK (for standard wiring: terminals
23/24).
3. Turn potentiometer [1] clockwise to the stop.
4. Turn potentiometer [1] slightly in opposite direction.
5. Turn potentiometer [2] clockwise until output current starts to increase.
6. Turn potentiometer [2] in opposite direction until the following value is reached:
at 0 – 20 mA approx. 0.1 mA
at 4 – 20 mA approx. 4.1 mA
ð This ensures that the signal remains above the dead and live zero point.
7. Move valve to end position OPEN.
8. Set potentiometer [3] to end value 20 mA.
9. Approach end position CLOSED anew and check minimum value (0.1 mA or 4.1
mA). Correct if required.
EWG 01.1 electronic position transmitter signals the remote position or the valve posi-
tion. On the basis of the actual valve position sensed by hall sensor, a current signal
between 0 – 20 mA or 4 – 20 mA is generated.
Table 18: EWG 01.1
Data
Output current I
a
Open switch compartment
[2] Potentiometer min. (0/4 mA)
[4] Measuring point (+) 0/4 – 20 mA
3-wire and 4-wire systems
0 – 20 mA, 4 – 20 mA
[} 33].
[3]
[5]
.
B
2-wire system
4 – 20 mA