Emerson Fisher FIELDVUE DVC6000f, Instruction Manual

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DVC6000f Digital Valve Controllers
December 2009 3-6
For an actuator not listed in the table, you can
estimate a starting tuning set by calculating the casing
or cylinder volume. Then, in the table, find an actuator
with the closest equivalent volume and use the tuning
set suggested for that actuator.
WARNING
Changes to the tuning set may cause
the valve/actuator assembly to stroke.
To avoid personal injury or property
damage caused by moving parts,
keep hands, tools, and other objects
away from the valve/actuator
assembly.
When Device Setup is complete you are asked if you
wish to run Auto Calibration now. Select yes to
automatically calibrate instrument travel at this time.
Follow the prompts on the Field Communicator
display. The calibration procedure uses the valve and
actuator stops as the 0% and 100% calibration points.
For additional information, refer to Auto Calibration in
the Calibration section.
Note
Single-acting relay B and C are not
user-adjustable. However, it is
recommended that you check the relay
adjustment for double-acting relay A in
new installations before proceeding
with travel calibration. Refer to page
5-4 for relay adjustment instructions.
If after completing auto setup and auto calibration the
valve seems slightly unstable or unresponsive, you
can improve operation by selecting Performance
Tuner from the Basic Setup menu.
Performance Tuner
Performance Tuner is used to optimize digital valve
controller tuning. It will move the valve slightly and
monitor the effects of small tuning changes until an
optimum control response is achieved. Because the
Performance Tuner can detect internal instabilities
before they become apparent in the travel response, it
can generally optimize tuning more effectively than
manual tuning. Access Performance Tuner by
selecting Performance Tuner from the Basic Setup
menu.
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