Figure 75:
View of control unit
[1]
Potentiometer
1.
Move valve to end position CLOSED.
2.
Turn potentiometer [1] counterclockwise until stop is felt.
➥
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).
9.11
Electronic position transmitter RWG: set
— Option —
The electronic position transmitter RWG 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 – 20 mA.
Table 10:
Technical data RWG 4020
3- or 4-wire system
Wiring
9
th
position = E or H
TPA
Terminal plan
0 – 20 mA, 4 – 20 mA
I
A
Output current
24 V DC, ±15 % smoothed
U
V
Power supply
24 mA at 20 mA output current
I
Max. current consump-
tion
600
Ω
R
B
Max. load
Figure 76:
View of control unit
[1]
Potentiometer (travel sensor)
[2]
Potentiometer min. (0/4 mA)
[3]
Potentiometer max. (20 mA)
[4]
Measuring point (+) 0/4 – 20 mA
[5]
Measuring point (–) 0/4 – 20 mA
1.
Connect voltage to electronic position transmitter.
54
SGExC 05.1 – SGExC 12.1 Control unit: electromechanic
Commissioning (basic settings)
ACExC 01.2 Intrusive Modbus RTU