Operating; Time Proportioning And Analog Control - ABB C300 Operating Manual

...5 OPERATING LEVEL
5.2 Operating Page Displays

5.2.1 Time Proportioning and Analog Control

Process
100. 3
Variable
110. 5
100. 3
OP 50. 0
100. 3
100. 3
dEG F
LOCAL
LOCAL
110. 5
bALNCE
rEMOtE
or
dUAL
rAtIO
1. 0 00
100. 3
110. 3
bIAS
8
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,
Control Output Value (0 to 100%).
To adjust the output value manually: select Manual control
mode using the
then use the
Manual Reset (0 to 100%).
r50. 0
This frame is not displayed if an
or
Manual Reset Adjust Enable
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,
Remote Set Point Ratio
The remote set point input (in engineering units) is
multiplied by the ratio to obtain the control set point value, i.e.
Use the
between 0.010 and 9.999 in 0.001 increments
Remote Set Point Bias
0. 0
The bias value is added to the remote set point value (see
previous frame) Use the
the bias required. The bias can be set to either a positive or
negative value (in engineering units).
and switches, providing
is set to – see Section 4.2 of the Programming
YES
.
Set Points Page
switch ('M' l.e.d. is illuminated) and
and
.
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 Value = Input x Ratio + Bias
and the
Set Point Adjust
switches to set the required value
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
switches to set the ratio required,
and the switches to set
is set
– see Section
parameter is
– see
YES
.