Motorized Valve Control - ABB C300 Operating Manual

5.2.2 Motorized Valve Control

Process
Variable
100. 3
110. 5
100. 3
Open
O
W 50. 0
Stop W
Close
C
Motorized Valve
(position-proportioning
and boundless)
100. 3
100. 3
dEG F
LOCAL
LOCAL
110. 5
bALNCE
rEMOtE
or
dUAL
rAtIO
1. 0 00
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
Enable
Guide,
Valve Status and Valve Position (%)
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
('M' l.e.d. is illuminated) and then use the
switches to set valve position required (the
opens the valve and the
neither switch pressed the valve is stopped.
Manual Reset (0 to 100%).
r500 This frame is not displayed if an
or
7.2,
Use the
eliminates any offset from the set point.
Temperature Units
This frame is not displayed if the
set to
Set Up Display Page
Set Point Type Selection – Fig. 5.1 (previous page)
Use the
difference is too great, press the
Control Set Point
an acceptable difference. The Local set point tracks the
Remote set point when the Remote set point is selected,
providing
Section 4.2 of the Programming Guide,
For
settings, refer to opposite page.
bIAS
0. 0
and
is set to – see Section 4.2 of the Programming
YES
Set Points Page
– valve stopped
W
– valve opening
O
– valve closing
C
Manual Reset Adjust Enable
.
Control Page
and
– see Section 4.8 of the Programming Guide
NONE
.
switch to view the various set point values. If the
frame and adjust the Local set point to obtain
Remote Set Point Tracking Enable
Remote Set Point Ratio
5 OPERATING LEVEL...
switches, providing
.
switch closes the valve). With
Integral Action Time
is set to
OFF
switches to set a value which
Display Units
switch and return to the
is set to
Set Points Page
and
Remote Set Point Bias
Set Point Adjust
switch
and
switch
is set
– see Section
parameter is
– see
YES
.
9