Emerson Fisher FIELDVUE DVC6000f Instruction Manual page 59

Tuning Set
Proportional Gain
B
C
D
E
F
G
H
I
J
K
L
M
X (Expert)
D Feedback Connection—Select RShaft Pot,
SStem Roller Pot, or SStem Pot. For rotary valves,
enter RShaft Pot. For sliding-stem valves, if the
feedback linkage consists of a connector arm,
adjustment arm, and feedback arm, similar to the
linkage shown in figure 3-1, enter SStem Pot. If the
feedback linkage consists of a roller that follows a
cam, similar to the linkage shown in figure 3-2, enter
SStem Roller Pot.
D Travel Sensor Motion—Select Clockwise or
Counterclockwise. Travel Sensor Motion establishes
the proper valve travel sensor (feedback) rotation.
Determine the rotation by viewing the end of the travel
sensor shaft.
WARNING
If you answer YES to the prompt for
permission to move the valve when
setting the Travel Sensor Motion, the
instrument will move the valve
through its full travel range. 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.
For instruments with relay A or C If increasing air
pressure at output A causes the shaft to turn
clockwise, enter Clockwise. If it causes the shaft to
turn counterclockwise, enter Counterclockwise.
For instruments with relay B If decreasing air
pressure at output B causes the shaft to turn
clockwise, enter Clockwise. If it causes the shaft to
turn counterclockwise, enter Counterclockwise.
December 2009
Table 3-3. Gain Values for Preselected Tuning Sets
Travel
Minor Loop
Velocity Gain
Feedback Gain
2.0 3.0
4.4 3.0
4.8 3.0
5.5 3.0
6.2 3.1
7.2 3.6
8.4 4.2
9.7 4.8
11.3 5.6
13.1 6.0
15.5 6.0
18.0 6.0
NA NA
Proportional Gain
35 0.5
35 2.2
35 2.4
35 2.8
35 3.1
34 3.6
31 4.2
27 4.8
23 5.6
18 6.6
12 7.8
12 9.0
NA NA
Table 3-2 lists the required Travel Sensor Motion
selections for Fisher and Baumann actuators.
D 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. Table 3-3 lists the
values for preselected tuning sets.
In addition, you can select Expert, which allows you to
modify tuning of the digital valve controller by
specifying the gain values.
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 the
performance tuner to adjust the tuning set to get the
desired response.
Note
When selecting a tuning set for a
DVC6015, DVC6025 or DVC6035 remote
mount unit, it may be necessary to
reduce the tuning set, due to the
effects of the long tubing between the
digital valve controller and the
actuator.
Basic Setup
Pressure
Minor Loop
Integrator Gain
Feedback Gain
0.3 35
0.1 35
0.1 35
0.1 35
0.1 35
0.1 34
0.1 31
0.1 27
0.1 23
0.1 18
0.1 12
0.1 12
NA NA
3-5
3