Fisher FIELDVUE DVC2000 Quick Start Manual page 22

DVC2000 Digital Valve Controller
July 2017
Tuning
WARNING
Changes to the tuning set may cause the valve/actuator assembly to stroke. To avoid personal injury and property damage
caused by moving parts, keep hands, tools, and other objects away from the valve/actuator assembly.
To manually tune the instrument or automatically tune the instrument without changing the calibration values, the
TUNING routine is available. To access this procedure from the home screen, press the DOWN (B) arrow key three
times and then the RIGHT (") arrow key once. From there follow the prompts as illustrated in figure 19 below.
Figure 19. Tuning
TRAVEL = 66.8%
14.6 MA 0.92 BAR
Y
B
QUICK SETUP
Y
B
TRAVEL
CALIBRATION
Y
B
TUNING
TUNING
A
"
" AUTOMATIC
AUTOMATIC
MANUAL
Automatic tuning will provide status information as the procedure is running. Manual tuning will require you to choose
from one of eleven tuning sets. Each tuning set provides a preselected value for the digital valve controller gain
settings. Tuning set C provides the slowest response and M provides the fastest response. Table 3 lists the proportional
gain, velocity gain, and minor loop feedback gain values for preselected tuning sets. Manual tuning is only
recommended when the automatic tuning procedure results in failure.
22
VALVE WILL MOVE
"
PRESS " FOR 3 SEC
A
VALVE MAY MOVE
" PRESS " FOR 3 SEC
AUTOTUNING
"
COMPLETE
"
AUTOTUNING
IN PROCESS...
AUTOTUNE FAILED
"
USE MANUAL TUNING
A " DAMPING
TUNING
"
" NEUTRAL
" C
EXPERT,
C,D,E,F,G,
H,I,J,K,L,M
Quick Start Guide
SAVE & EXIT?
A
"
PRESS "
+5, +4, +3, +2, +1
SAVE & EXIT?
NEUTRAL
EXIT W/O SAVING?
-5, -4, -3, -2, -1
D103203X012