Travel Pressure Control - Fisher FIELDVUEDVC6200f Instruction Manual

Instruction Manual
D103412X012
Table 4‐6. Gain Values for Preselected Pressure Tuning Sets
Tuning Set Pressure Proportional Gain
B
C
D
E
F
G
H
I
J
K
L
M
X (Expert) User Adjusted
Note
Use Expert tuning only if standard tuning has not achieved the desired results.
Stabilize/Optimize may be used to achieve the desired results more rapidly than Expert tuning.
Pressure Proportional Gain (PRESS_PROP_GAIN [74.3]) is the proportional gain for the pressure control tuning set.
Changing this parameter will also change the tuning set to Expert.
Pressure MLFB Gain (PRESS_MLFB_GAIN [74.11]) is the minor loop feedback gain for the pressure control tuning set.
Changing this parameter will also change the tuning set to Expert.
Pressure Integral Gain (PRESS_INTEG_GAIN [74.4]) (also called reset) is the ratio of the change in output to the change
in input, based on the control action in which the output is proportional to the time integral of the input. Changing this
parameter will also change the tuning set to Expert.
Pressure Integral Dead Zone (PRESS_INTEG_DEADZ [74.6]) is a window around the Primary Setpoint in which the
integral action is disabled. The dead band is configurable from 0 to 2%.
Pressure Integral Limit Hi (PRESS_INTEG_HI_LIM [74.7]) provides an upper limit to the integrator output. The high
limit is configurable from 0 to 100% of the I/P drive signal.
Pressure Integral Limit Lo (PRESS_INTEG_LO_LIM [74.8]) provides a lower limit to the integrator output. The low limit
is configurable from -100 to 0% of the I/P drive signal.
Travel/Pressure Control
Travel/Pressure State (TVL_PRESS.STATE [65.2]) indicates if the instrument is being used for travel control (position
control) or as an I/P (pressure control)
Travel/Pressure Select (TVL_PRESS_SELECT [65.1])
CAUTION
When using Pressure Fallback Manual Recovery or Pressure Fallback Auto Recovery, the valve travel has the potential of
moving rapidly causing potential process instability when returning to Travel Control.
Pressure Integrator Gain
0.5
2.2
2.4
2.8
3.1
3.6
4.2
4.8
5.6
6.6
7.8
9.0
User Adjusted
Pressure Minor Loop Feedback Gain
0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
DVC6200f Digital Valve Controller
Detailed Setup - Transducer Block
35
35
35
35
35
34
31
27
23
18
12
12
User Adjusted
February 2017
51