Emerson FIELDVUE DVC6200f, Инструкция по эксплуатации

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Basic Setup
November 2010 27
Table 3-3. Gain Values for Preselected Tuning Sets
Tuning Set
Travel Pressure
Proportional Gain Velocity Gain
Minor Loop
Feedback Gain
Proportional Gain Integrator Gain
Minor Loop
Feedback Gain
B
C
D
E
F
G
- - -
4.4
4.8
5.5
6.2
7.2
- - -
3.0
3.0
3.0
3.1
3.6
- - -
35
35
35
35
34
0.5
2.2
2.4
2.8
3.1
3.6 0.3
0.1
0.1
0.1
0.1
0.1 35
35
35
35
35
34
H
I
J
K
L
M
8.4
9.7
11.3
13.1
15.5
18.0
4.2
4.8
5.6
6.0
6.0
6.0 31
27
23
18
12
12 4.2
4.8
5.6
6.6
7.8
9.0 0.1
0.1
0.1
0.1
0.1
0.1 31
27
23
18
12
12
X (Expert) NA NA NA NA NA NA
Table 3-2 lists the required Travel Sensor Motion
selections for Fisher and Baumann actuators.
Tuning Set—There are twelve tuning sets to
choose from. Each tuning set provides a preselected
value for the digital valve controller gain settings.
Tuning set B provides the slowest response and M
provides the fastest response. For smaller actuators
use tuning set C or D. For larger actuators using
tuning set F or G. Table 3-3 lists the values for
preselected tuning sets.
Note
Tuning set B is only available in
Pressure Control Mode.
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.
In addition, you can select User Adjusted or Expert,
which allows you to modify tuning of the digital valve
controller. With User Adjusted you can specify the
proportional gain. An algorithm in the Field
Communicator calculates the other gains. With Expert
you can specify not only the proportional gain but the
velocity and minor loop feedback gain as well.
Note
Use Expert tuning only if standard
tuning has not achieved the desired
results.
Stabilize/Optimize or Performance
Tuner may be used to achieve the
desired results more rapidly than
expert tuning.
Table 3-2 provides tuning set selection guidelines for
Fisher and Baumann actuators. These tuning sets are
only recommended starting points. After you finish
setting up and calibrating the instrument, use
Stabilize/Optimize to adjust the tuning set to get the
desired response.
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.
3