Yokogawa YVP110 - Manual (Page 137)

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IM 21B04C01-01E
Appendix 3. DD Methods and DD Menu
A3.1 Overview
Fieldbus technology has enabled a broad range
of functions to be covered by a field device alone.
Conversely, it has resulted in increased parameters
to support these increased functions. To alleviate
intricate operations due to the multiplied parameters
and to provide easier-to-use user interfaces,
fieldbus technology offers a menu facility and
interactive guidance facility called methods, to be
incorporated in device descriptions (DDs). With a
field device whose DD contains a pre-embedded
menu and methods, users can easily and intuitively
access desired parameters and perform a series of
setup operations.
A DD menu and DD methods are features
embedded in a DD file for a field device, therefore,
software supporting them needs to be used on the
host computer for fieldbus system configuration.
Make an inquiry to the software supplier about
whether and how the software you use supports
DD menus and DD methods. This User’s Manual
describes only the DD menu and DD methods of
the YVP110.
A3.2 DD Methods
DD methods guide you in setting parameter
procedures properly. Simply following instructions
given by DD methods will accomplish the intended
parameter setting without accessing a wrong
parameter or failing to follow the correct setting
procedure. Note that in principle, accessing the
individual parameters can also make the settings
that can be made using DD methods.
As for the YVP110, twelve DD methods for the
transducer block, two for the AO block, and one for
the OS block are provided. The following describes
these methods for each block model.
A3.2.1 Transducer Block
1) Setup Wizard
This method guides you through each step of the
most common setup procedure that always needs
to be performed after installing the YVP110 on a
valve. For the details of the setup and pertaining
parameters, see Chapter 5, “Setup.”
Setup procedure
• AO/TB block mode check
• ACT_FAIL_ACTION setting
• VALVE_TYPE setting
• Stop position search and automatic tuning
• Travel calibration
0% calibration
Span calibration
50% calibration
• Operational parameter setting
• …
2) Auto Tuning Wizard
This method guides you through each step to
search for the valve’s mechanical stop positions
and carry out auto tuning of control parameters.
For details, see Section 5.3, “Carrying out Auto
Tuning.”
Auto tuning procedure
• AO/TB block mode check
• Auto tuning execution: AUTO_TUNE_EXEC
3) Search Stop Points
This method guides you through each step to
search for the valve’s mechanical stop positions
(both on the closed and open sides) by maximizing
and minimizing the output pressure to the
positioner.
Setup procedure
• AO/TB block mode check
• Auto tuning execution: AUTO_TUNE_EXEC
Standard
Without timeout
Step by step
Exit
4) Control Parameter Tuning
This method helps perform control-parameter-
specific tuning, from among the parameters
that can be tuned by the auto tuning function. It
does not contain a help utility for a stop point
search (searching for the valve’s mechanical stop
positions).
• AO/TB block mode check
• Execution of control parameter tuning:
AUTO_TUNE_EXEC