Tuning; Stabilize/Optimize - Emerson Fisher Fieldvue DVC6030f Instruction Manual

Select the direction and size of change required to set
the feedback arm so it is 90° to the actuator stem, as
shown in figure 4-3.
If another adjustment is required, repeat step 2.
Otherwise, select Done and then Next, and go to
step 3.
3. The remainder of the auto-calibration procedure is
automatic. It is completed when the Calibrate menu
appears.
4. When the calibration procedure has finished, you
will be prompted to enter the name of the person
performing the calibration procedure.
5. Enter the location of the calibration procedure.
6. Enter the date of the calibration procedure.
7. Place the Transducer Block Mode in Auto and
verify that the travel properly tracks the setpoint
changes.

Tuning

Stabilize/Optimize

(TB > Basic Setup > Stabilize/Optimize)
If after completing initial setup and calibration the
valve cycles or overshoots, or is sluggish, you can
improve operation running Stabilize/Optimize.
March 2006
Basic Setup and Tuning
WARNING
During Stabilize/Optimize, the valve
may move. To avoid personal injury
and property damage caused by the
release of pressure or process fluid,
provide some temporary means of
control for the process.
Stabilize/Optimize is included with the device
description (DD) software. Stabilize/Optimize is
accessible from the transducer block and permits
changing the transducer block set point a small
amount to see if the valve is unstable or unresponsive.
If valve response is unsatisfactory, the method permits
adjusting the digital valve controller tuning to improve
response.
If the valve is unstable, select Decrease Response to
stabilize valve operation. This selects the next lower
tuning set (e.g., F to E). If the valve response is
sluggish, select Increase Response to make the valve
more responsive. This selects the next higher tuning
set (e.g., F to G).
If after selecting Decrease Response or Increase
Response the valve travel overshoot is excessive,
Increase Damping or Decrease Damping can be used
to select a damping value not represented in a
predefined tuning set. Select Decrease Damping to
select a damping value that allows more overshoot.
Select Increase Damping to select a damping value
that will decrease the overshoot.
When valve operation is satisfactory, select Exit.
Before exiting, you are asked if you want to return the
transducer block mode to Auto. Select Yes to change
the transducer block mode to Auto. Select No to leave
the transducer block in its current mode.
4
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