Yokogawa YVP20S - Manual (Page 45)

6-4
<Toc> <Ind> <6. QUICK TOUR OF ValveNavi>
IM 21B04C50-01E
6.4 Control Valve Faceplate
The control valve faceplate frame encloses displays and controls for working with the
positioner.
Figure 6.4 IVI Positioner Faceplate Frame
Figure 6.4 shows an example of the control valve faceplate frame in the IVI. The
positioner’s tag is shown in the PD-Tag field. The current operating state of the positioner is
shown in the Operation control button displaying, in this example, “NORMAL STATE.”
Individual block modes are displayed for each of the positioners internal function blocks.
The valve position Set Point is displayed by the graphical position of a slider control and
numerically to two decimal places. Below the setpoint display, the target position and actual
position are shown as a slider and bar respectively, with values shown to two decimal
places.
The Target Position is derived from the Set Point signal based on the parameters defined in
Configuration Services, on the valve characterization and on the configuration of air-to-
open or air-to-close. It is further modified by any limits that may be configured.