Figure 23: Selectable Gain Switch
8.5 Jog Calibration Switch
(CAL_AUTO◄►CAL_JOG)
This switch selects between Auto and Jog calibration modes.
Auto – The Auto setting works for most valves if the fully
opened position of the valve has a mechanical stop. In Auto
mode during a stroke calibration (Quick-Cal), the positioner
will fully close the valve and register the 0% position, then fully
open the valve to register the 100% position.
Jog – Use the Jog setting if the fully opened position of the
valve has no hard stop and is manually set. In Jog mode during
a stroke calibration (Quick-Cal), the positioner will fully close
the valve and register the 0% position, then wait for the user
to move the valve to the 100% open position using the Up and
Down buttons. Press the ACCEPT/QUICK-CAL button to
accept the 100% location.
See section 9, Operations – Calibration and Control, for more
information.
8.6 Valve Stability Switch
(LO_FRIC◄►HI_FRIC)
Not applicable.
8.7 Signal at Closed Switch (HART)
(4mA◄►20mA)
Normally this will be set to 4 mA for an Air-To-Open actuator
configuration, and 20 mA for Air-To-Close.
4 mA – Selecting 4 mA will make the valve close when the
signal is low (4 mA) and open when the signal is high (20 mA).
20 mA – Selecting 20 mA will make the valve close when the
signal is high (20 mA) and open when the signal is low (4 mA).
NOTE: When using an Analog Output (AO) function, the
AO signal corresponds with the Signal At Closed selection. If
the valve closes with a 4 mA signal, the AO will show a 4 mA
signal at closed. If the valve closes with a 20 mA signal, the
AO will show a 20 mA signal at closed.
8.8 HART Switch (HART)
(HART_6◄►HART_7)
For HART 6 protocol, select HART6. For HART 7, select
HART7.
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