DVC2000 Digital Valve Controller
July 2009
3-8
Detailed Setup
If the factory default configuration values need to be
changed, the DETAILED SETUP procedure provides
access. See figure 3-5 for the flowchart showing the
sequence of screens. To access this procedure from
the home screen, press the DOWN (
) arrow key four
times. The RIGHT (
) arrow key brings you into the
configuration items. Once you are in a particular
configuration item, use the UP (
) and DOWN (
)
arrow keys to select the appropriate choice.
To exit this procedure, press the RIGHT (
) arrow key
and view the remaining configuration items until you
reach the exit screen. If you exit without saving, the
last saved configuration data will be restored.
Below is an explanation of the configuration items.
Zero Control Signal—Identifies whether the valve is
fully OPEN or fully CLOSED when the input is 0%. If
you are unsure how to set this parameter, disconnect
the current source to the instrument. The resulting
valve travel is the Zero Control Signal. This
corresponds to setting the output pressure to zero.
Pressure Units—Defines the pressure units in either
PSI, BAR, or KPA.
Input Range Low—This will correspond to 0% travel if
the Zero Control Signal is configured as closed. If the
Zero Control Signal is configured as open, this will
correspond to 100% travel.
Input Range High—This will correspond to 100% travel
if the Zero Control Signal is configured as closed. If the
Zero Control Signal is configured as open, this will
correspond to 0% travel.
Characteristic—Defines the relationship between the
travel target and the ranged set point. Ranged set
point is the input to the characterization function. If the
Zero Control Signal is closed, then a set point of 0%
corresponds to a ranged input of 0%. If the Zero
Control Signal is open, a set point of 0% corresponds
to a ranged input of 100%. Travel target is the output
from the characterization function.
Note
Travel cutoffs are enabled by default
on all units.
TUNING
INPUT RANGE
LOW
4 MA
SWITCH1 CLOSED
ABOVE 90%
ZERO CTL SIGNAL
VALVE
CLOSED
PRESSURE UNITS
BAR
CHARACTERISTIC
LINEAR
INPUT RANGE
HIGH
20 MA
CLOSED
OPEN
ABOVE
BELOW
DISABLED
TRANSMITTER
4MA
CLOSED
125%
...
−
25%
TRAVEL = 66.8%
14.6 MA 0.92 BAR
QUICK SETUP
TRAVEL
CALIBRATION
DETAILED SETUP
BAR
PSI
KPA
4MA
...
19MA
20MA
...
5MA
QUICK OPEN
LINEAR
EQUAL %
CUSTOM
CLOSED
OPEN
SAVE & EXIT?
EXIT W/O SAVING?
SAVE & EXIT?
PRESS
125%
...
−
25%
BELOW
ABOVE
DISABLED
SWITCH1
TRIP POINT
90%
SWITCH2
TRIP POINT
10%
SWITCH2 CLOSED
BELOW 10%
Only with Optional Position Transmitter / Limit Switches
Only with Optional Position
Transmitter / Limit Switches
Figure 3-5. Detailed Setup Flow Chart
3
Содержание Fisher FIELDVUE DVC2000
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Страница 71: ...Parts July 2009 7 1 7 7 Section 7 Parts Parts Ordering 7 2 Parts Kits 7 2 Parts List 7 2 7 ...
Страница 77: ...Principle of Operation July 2009 A 1 A A Appendix A Principle of Operation DVC2000 Operation A 2 A ...
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Страница 104: ...DVC2000 Digital Valve Controller July 2009 Index 8 C Index ...
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