10.
Commissioning (optional equipment settings)
10.1.
Potentiometer
The potentiometer is used as travel sensor and records the valve position.
Setting elements
The potentiometer is housed in the actuator switch compartment. The switch
compartment must be opened to perform any settings. Refer to <Switch compartment:
open>.
Setting is made via potentiometer [1].
Figure 27: View on control unit
[1]
Potentiometer
10.1.1.
Potentiometer: set
Information
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.
1.
Move valve to end position CLOSED.
2.
Turn potentiometer [1] clockwise to the stop.
➥
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).
10.2.
Intermediate positions: set
Actuators equipped with DUO limit switching contain two intermediate position
switches. One intermediate position may be set for each running direction.
33
SAI 07.2 – SAI 16.2 / SARI 07.2 – SARI 16.2
for use in nuclear power plants
Commissioning (optional equipment settings)
