9
5
OPERATING LEVEL…
5.2.2
Motorized Valve Control
Control Set Point
The set point in use is displayed (Local, Remote or Dual).
If the Local or Dual set point is displayed it can be adjusted
using the
and
switches, providing
Set Point Adjust
Enable
is set to
YES
– see
Section 4.2 of the Programming
Guide,
Set Points Page
.
Valve Status and Valve Position (%)
W
–
valve stopped
O
–
valve opening
C
–
valve closing
The valve position is displayed as a percentage of its full
travel position (not displayed on boundless controllers with
position indication disabled). To adjust the valve position
manually: select Manual control mode using the
switch
('M' l.e.d. is illuminated) and then use the
and
switches to set valve position required (the
switch
opens the valve and the
switch closes the valve). With
neither switch pressed the valve is stopped.
Manual Reset (0 to 100%).
This frame is not displayed if an
Integral Action Time
is set
or
Manual Reset Adjust Enable
is set to
OFF
– see Section
7.2,
Control Page
.
Use the
and
switches to set a value which
eliminates any offset from the set point.
Temperature Units
This frame is not displayed if the
Display Units
parameter is
set to
NONE
– see
Section 4.8 of the Programming Guide
Set Up Display Page
.
Set Point Type Selection – Fig. 5.1 (previous page)
Use the
switch to view the various set point values. If the
difference is too great, press the
switch and return to the
Control Set Point
frame and adjust the Local set point to obtain
an acceptable difference. The Local set point tracks the
Remote set point when the Remote set point is selected,
providing
Remote Set Point Tracking Enable
is set to
YES
– see
Section 4.2 of the Programming Guide,
Set Points Page
.
For
Remote Set Point Ratio
and
Remote Set Point Bias
settings, refer to opposite page.
100.3
110.5
O
W
C
100.3
W 50.0
Open
Close
Stop
Motorized Valve
(position-proportioning
and boundless)
100.3
dEG F
LOCAL
110.5
LOCAL
bALNCE
rEMOtE
dUAL
or
rAtIO
1.000
100.3
r500
bIAS
0.0
Process
Variable
