Technical Specifications

85
Setting the Air Action
SVI II AP Monitor Screen
Setting the Air Action
The Set Air Action step allows you to set the action of the air supply by making one of the
following selections:
 Air to Open - air pressure is used through the SVI II AP to open the valve
 Air to Close - air pressure is used through the SVI II AP to close the valve
 Reset configuration to factory defaults - resets the calibration and configuration
parameters to the factory defaults; Air Action, Travel, and PID parameters
To set the air action:
1. Click Set Air Action.
2. Select either the Air-to-Open or Air-to-Close.
3. Click Reset configuration to factory defaults, if required.
NOTE The changes you make to air action will not take place until you
click Apply. Do not click Apply until after you have made all your
Setup Wizard selections.
Calibrate Travel
To determine valve position, the positioner must measure the closed and open positions of
the valve. The SVI II AP first exhausts the actuator and measure the position, then fills the
actuator and measures the position. From these measurements the valve position can be
determined.
To calibrate positioner travel:
 Click Calibrate Travel.
NOTE The calibrate travel function will not take place until you click
Apply. Do not click Apply until after you have made all your
Setup Wizard selections.
Autotune
To autotune the SVI II AP:
 Click Autotune.
NOTE The autotune function will not take place until you click Apply.
Do not click Apply until after you have made all your Setup
Wizard selections.