Yokogawa YVP20S - Manual (Page 67)

7-6
<Toc> <Ind> <7. INTEGRATED VALVE INTERFACE (IVI)>
IM 21B04C50-01E
7.2 Control Valve Faceplate
7.2.1 Selected Device
The Selected Device Frame provides a dedicated view for the selected device which
includes device tag and operation state, blocks actual mode, valve position and setpoint,
other status, and other parameters bar graph. It encloses displays and controls for working
with the positioner and control valve.
Figure 7.6 Control Valve Faceplate with =% Characteristic
Figure 7.6 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. 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 pointer and bar
respectively, with values shown to two decimal places.
The Target Position is derived from the Set Point signal based on the calibration parameters
defined in Calibrate, on the valve characterization and on the configuration of air-to-open or
air-to-close as defined in Configure. It is further modified by any limits that may be
configured.
Each of the parameters displayed in the control faceplate dialog has a function block and
parameter name (shown in the form of BLOCK.PARAMETER). These are listed in Table
7.1.