11.
Commissioning (optional equipment settings)
11.1.
EWG 01.1 electronic position transmitter
EWG 01.1 electronic position transmitter signals the remote position or the valve
position. 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.
Technical data
Table 32: EWG 01.1
2-wire system
3-wire and 4-wire systems
Data
4 – 20 mA
0 – 20 mA, 4 – 20 mA
Output current I
a
24 V DC (18 – 32 V)
24 V DC (18 – 32 V)
Power supply U
V
1)
20 mA
LED off = 26 mA,
LED on = 27 mA
Max. current consumption
(U
V
– 12 V)/20 mA
600
Ω
Max. load R
B
0.1 %
Impact of power supply
0.1 %
Load influence
< 0.1 ‰/K
Temperature impact
–60 °C to +80 °C
Ambient temperature
2)
Power supply possible via: AC, AM actuator controls or external power supply
1)
Depending on temperature range of the actuator: Refer to name plate
2)
Setting elements
The EWG is housed in the actuator switch compartment. The switch compartment
must be opened to perform any settings. Refer to <Switch compartment: open>.
All settings are made via the two push buttons [S1] and [S2].
Figure 90: View on control unit when switch compartment is open
[S1]
Push button: Set 0/4 mA
[S2]
Push button: Set 20 mA
LED Optical aid for setting
[1]
Measuring point (+) 0/4 – 20 mA
[2]
Measuring point (–) 0/4 – 20 mA
The output current (measuring range 0 – 20 mA) can be checked at measuring points
[1] and [2].
75
SAEx 07.2 – SAEx 16.2/SAREx 07.2 – SAREx 16.2 Control unit - electromechanical
ACExC 01.2 Intrusive Modbus RTU
Commissioning (optional equipment settings)