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TUNING SET
Proportional Gain
B
C
D
E
F
G
H
I
J
K
L
M
X (Expert)
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 Type A 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 Type 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.
Table 4-2 lists the required Travel Sensor Motion
selections for Fisher, Baumann, and Gulde 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 4-3 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 4-2 provides tuning set selection guidelines for
Fisher, Baumann, and Gulde actuators. These tuning
sets are only recommended starting points. After you
finish setting up and calibrating the instrument, use the
March 2006
Table 4-3. 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
Basic Setup and Tuning
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
ROLLER
STEM
CONNECTOR
CAM
29B1665-A / DOC
Figure 4-2. Feedback Connection for Typical Long-
Stroke Sliding-Stem Actuator (4 to 24-Inches Travel)
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.
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.
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
4-5
4
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