-16-
E.
Press the setup key until the display shown below appears. The sensor voltage value for
the minimum open position can now be entered. Recall the value read and recorded in
section 3.5, step B.
This value
plus
5
0 millivolts should be used for the MINPOS
value.
The +
50
millivolt offset voltage allows for a 0.00% output reading from the
valve to any
user equipment when it is off, in spite of any thermal growth of the valve
parts which may
occur during normal use.
HARDWARE CONFIG
MINPOS
ÿ
1.880
+
pres s to
increase
value
-
pres s to
decrease
value
The right arrow always points to the adjustable value on the CONFIGURATION
screen. Adjustments to CONFIG values are saved instantly and retained until
changed again.
F.
Use the UP arrow key to select the screen for the entry of the sensor voltage
representing the maximum open position of the valve or 100% open. Recall the value
read and recorded in section 3.5 step C. This value
minus
5
0 millivolts should be used
for the MAXPOS value. The -
50
millivolt offset voltage ensures that the valve will be able
to reach its wide open position regardless of minor system variations.
E
pres s to
display
nex t
value
HARDWARE CONFIG
MAXPOS
ÿ
3.720
+
pres s to
increase
value
-
pres s to
decrease
value
NORM
press to
ex it
setup
mode
3.6 After returning from the position sensor calibration screen, follow these instructions for testing
the calibration of the AGV5.
A.
The input simulator should still be set to 4 milliamperes or less and the HOME screen
display should appear as shown below. The position sensor voltage should be about the
same as read in section 3.5 step B, and the valve position shown in % open should now
read close to the fully closed position of 0.00%. A reading of 0.00 +/- 0.50% would be in
the normal range.
OFF
ACT 1.880 -00.50
