SETUP
LOOP OPTIONS
3 - 7
AUD ALARM
4. Press or until
AUD ALARM
is highlighted. Press
. A
selection box will appear. Press or to select
ON
or
OFF
, then
press .
Direct/Reverse Bypass
Operation
When the unit enters bypass mode, this option determines direction
of the control output action of the analog signal with respect to
changes in the control output percentage. Direct action is analogous
to fail close or air-to-open (ATO); reverse action is analogous to fail
open or air-to-close (ATC).
For example, if direct is chosen and the displayed output percentage
was 25%, 2 V (8 mA) will appear on the analog output and increasing
percent drives the output to 5 V (20 mA). If reverse is chosen with a
25% displayed output, 4 V (16 mA) will appear at the analog output,
and decreasing percent drives the output to 5 V (20 mA). This option
must be consistent with the configuration to support ATC/ATO final
control element in the main board. Refer to
in Section 4 for supporting logic.
BYP ACTION
5. Press or until
BYP ACTION
is highlighted. Press
. To
select the action when the controller is in bypass mode, press or
to select
DIR
or
REV
. Press
.
6. Press the soft key below
NEXT SCRN
to continue.
Process Display Type
7. The select
Process Display Type
screen will appear. This option
allows selecting the type of process display. There are four selections
as shown (Fig.
). Press or to scroll the types. If the soft key
below
VIEW
is pressed, a view of that type process display screen
will appear. Once the selection has been made, press
to return
to the setup menu.
s
t
SEL
s
t
SEL
s
t
SEL
s
t
SEL
L1: BYP
L2: BYP
SET
- LOOP 1
Process Display
Type: 1
2 BAR
Choose 1 of 4 types:
1 = 2 bar
2 = 3 vertical bar
3 = 2 vertical bar (horizontal CO)
4 = 2 vertical bar (reverse SP and PV) with
horizontal CO
ESC
PROC
DSPL
VIEW
s
t
SEL
7