Technical Specifications

583
Calibration Value
 Operating: In this mode the SVI responds to the input signal
and positions the valve appropriately (indicator green).
 Manual: In this mode the valve does not respond to the
input signal. Instead it remains stable in one position which
is the position that the valve was when manual mode was
entered or a new position selected by the user (see Setpoint)
(indicator yellow).
 Configure: In this mode you can set configuration
parameters of the positioner or controller (indicator yellow).
 Calibrate: In this mode you can set calibration parameters
of the positioner (indicator yellow).
 Diagnostic: In this mode you can run response time tests,
step response tests, and positioner signatures (indicator
yellow).
 Bumpless transfer: This is a transition mode when you select
operating mode from manual mode (see Bumpless
Transfer) (indicator red).
 Failsafe: When the SVI cannot operate correctly the device
goes to the failsafe position and remains in the failsafe
mode until the user intervenes (indicator red).
Calibration Value
This value is used when recalibrating the signal measurement. To do this:
1. Set the source current to a known value.
2. Enter that value in the Calibration Value edit box.
3. Select Set Low Signal Cal or Set High Signal Cal appropriately.
Calibration Value- 2nd input Signal
To calibrate the auxiliary signal input (used for the process variable when the controller is
on):
1. Connect a 4ma or 20ma signal to the input.
2. Enter the value in this edit box.
3. Select Set Low Signal2 Cal or Set Low Signal1 Cal, respectively from the menu.
See the operating manual for instructions on connecting the auxiliary signal to the SVI.