Yokogawa YVP20S - Manual (Page 38)

5-9
IM 21B04C50-01E
<Toc> <Ind> <5. FOUNDATION FIELDBUS OVERVIEW>
5.4 Examples of IVI Operational States
Examples of operational states that are combinations of block modes are shown in the
following figures.
A new device or a newly configured device may start up in the out of service (OOS) state
shown in Figure 5.8.
Figure 5.8 Out of service at startup
To transfer to the manual state which allows ValveNavi to adjust the valve position, click the
Operating State icon and select Manual. Enter a setpoint in the Set Point text box (Figure
5.9) then click OK, or drag the Set Point slider to the desire value. If the positioner is
configured with a non-linear (such as =%) characteristic, the Target Position will be
computed from the setpoint but may differ in value. The configuration options of Tight
Shutoff Below, Full Open Above, as well as high and low position limits will be applied to the
Set Point to arrive at the correct Target Position.
Figure 5.9 Manual State