Instruction Manual

DVC6000 SIS
September 2013
6-8
1. When allowed by the Logic Solver, momentarily
remove and then restore power to the solenoid
(typically 100 to 200 milliseconds). This process
should occur quickly enough that the valve assembly
does not move when the solenoid is de-energized.
2. With ValveLink Software, upload the diagnostic
data from the triggered profile menu.
3. Examine the graph and observe that there was a
change in the pressure reading downstream of the
solenoid.
Overview
The following menus are available to define and/or
view information about the instrument. Select
Overview from the Online menu.
Analog In (3-1)—Analog Input shows the value of the
instrument analog input in mA (milliamperes) or %
(percent) of ranged input.
Set Point (3-2)—Travel Set Point shows the
requested valve position in % of ranged travel.
Travel (3-3)—Travel shows the value of the DVC6000
SIS digital valve controller travel in % (percent) of
ranged travel. Travel always represents how far the
valve is open.
Drive Signal (3-4)—Drive Signal shows the value of
the instrument drive signal in % (percent) of maximum
drive.
Pressure (3-5)
Shows the value of the instrument supply and output
pressures in psi, bar, kPa, or kg/cm
2
. Also shows the
output pressure differential. To display pressures may
require selecting the variable; a detail display of that
variable with its values will appear.
 Pressure A—Shows the value of Output
Pressure A in psi, bar, kPa, or kg/cm
2
.
 Pressure B—Shows the value of Output
Pressure A in psi, bar, kPa, or kg/cm
2
.
 A Minus B—Shows the value of the output
pressure differential in psi, bar, kPa, or kg/cm
2
.
 Supply—Displays the instrument supply
pressure in psi, bar, kPa, or kg/cm
2
.
Variables (3-6)
The Variables menu is available to view additional
variables, including; Auxiliary Input, Temperature,
Maximum Recorded Temperature, Minimum Recorded
Temperature, Cycle Counter, Travel Accumulator,
Raw Travel Input, View Number of Days Powered Up,
and Number of Power Ups.
To view one of these variables, from the Online menu
select Overviews and Variables. If a value for a
variable does not appear on the display, select the
variable and a detailed display of that variable with its
value will appear. A variable’s value does not appear
on the menu if the value becomes too large to fit in the
allocated space on the display, or if the variable
requires special processing, such as Aux Input.
 Auxiliary Input—A discrete input that can be
used with an independent limit or pressure switch. Its
value is either open or closed.
 Temperature—The internal temperature of the
instrument is displayed in either degrees Fahrenheit or
Celsius.
 Maximum Recorded Temperature—Shows the
maximum temperature the instrument has experienced
since installation.
 Minimum Recorded Temperature—Shows the
minimum temperature the instrument has experienced
since installation.
 Cycle Counter—Displays the number of times
the valve travel has cycled. Only changes in direction
of the travel after the travel has exceeded the
deadband are counted as a cycle. Once a new cycle
has occurred, a new deadband around the last travel
is set. The value of the Cycle Counter can be reset
from the Cycle Count Alert menu. See page 4-16 of
the Detailed Setup section for additional information.
 Travel Accumulator—Contains the total change
in travel, in percent of ranged travel. The accumulator
only increments when travel exceeds the deadband.
Then the greatest amount of change in one direction
from the original reference point (after the deadband
has been exceeded) will be added to the Travel
Accumulator. The value of the Travel Accumulator can
be reset from the Travel Accumulator menu. See page
4-16 of the Detailed Setup section for additional
information.
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