Fisher FIELDVUE DVC6200f Instruction Manual page 68

Detailed Setup—Transducer Block
July 2013
Table 4‐9. 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.
D Pressure Proportional Gain—Pressure Proportional Gain (PRESS_PROP_GAIN [47.3]) is the proportional gain for the
pressure control tuning set. Changing this parameter will also change the tuning set to Expert.
D Pressure MLFB Gain—Pressure MLFB Gain (PRESS_MLFB_GAIN [47.11]) is the minor loop feedback gain for the
pressure control tuning set. Changing this parameter will also change the tuning set to Expert.
D Pressure Integral Gain—Pressure Integral Gain (PRESS_INTEG_GAIN [47.4]) (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.
D Pressure Integral Dead Zone—Pressure Integral Dead Zone (PRESS_INTEG_DEADZ [47.6]) is a window around the
Primary Setpoint in which the integral action is disabled. The dead band is configurable from 0 to 2%.
D Pressure Integral Limit Hi—Pressure Integral Limit Hi (PRESS_INTEG_HI_LIM [47.7]) provides an upper limit to the
integrator output. The high limit is configurable from 0 to 100% of the I/P drive signal.
D Pressure Integral Limit Lo—Pressure Integral Limit Lo (PRESS_INTEG_LO_LIM [47.8]) 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
TB > Configure/Setup > Detailed Setup > Response Control > Travel Pressure Control
Field Communicator
D Travel/Pressure State—Travel/Pressure State (TVL_PRESS.STATE [41.2]) indicates if the instrument is being used for
travel control (position control) or as an I/P (pressure control)
D Travel/Pressure Select
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.
66
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
Instruction Manual
35
35
35
35
35
34
31
27
23
18
12
12
User Adjusted
D103412X012