Chapter 7: Normal Operating Mode
SVI functions in normal operating, manual operating, configuration, calibration, diagnostic and fail-safe
modes. Correspondingly, ValVue has various windows to interface with these different modes. In the
normal operating mode, the SVI controlled valve responds to the 4-20 mA input signal directly if the SVI
is configured as a positioner only. When the built-in process controller is enabled and SVI is in normal
mode, the valve responds to the output of the process controller.
In the Select Device Window of ValVue, click on an SVI device and press the Select button or double
click the SVI device to bring up a window representing SVI in either normal or manual operating mode
depending on the current SVI mode. Figure 28 below shows an example of the Normal Operating Mode
window. ONLINE is displayed in the Window indicating communication with the SVI has been estab-
lished and valve tag is shown in Tag field.
Valve Monitoring
The Normal Operating Mode window monitors a valves normal operation. This window displays and
updates real time values for input signal, valve position and pressure as defined below.
•
Input Signal:
This indicates the current in mA into the SVI.
•
Valve Position:
This indicates valve stem or shaft position in percent of ranged travel.
•
Pressure:
This indicates the SVI output pressure for a single acting positioner or differential
pressures for a double acting positioner.
31
Figure 28. Normal Operating Mode Window
