Operation Installation and Operation Handbook
2.3.1
Automatic mode
You will normally work with the controller in automatic mode. If the MAN light is on, press the AUTO/MAN button
to select automatic mode. The AUTO light will come on.
The Home display
Check that the AUTO light is on.
The upper readout shows the measured temperature, or process value. The
lower readout shows the setpoint.
To adjust the setpoint up or down, press
or
.
(Note: If Setpoint Rate Limit has been enabled, then the lower readout will
show the active setpoint. If
or
is
pressed, it will change to show and
allow adjustment of, the target setpoint.)
Press
once
Display units
A single press of the
button will flash the display units for 0.5 seconds,
after which you will be returned to the
Home
display.
Flashing of the display units may have been disabled in configuration, in which
case a single press will take you straight to the display shown below.
Press
twice
% Output power demand
The % output power demand is displayed in the lower readout. This is a read-
only value. You cannot adjust it.
Press
and
together to return to the
Home
display.
If the controller is configured as Valve Position and Manual is selected the
Output Power is displayed as
VPOS
. This is the inferred position of the valve
Press
Pressing
from the Output Power display may access further parameters. These may be
in this scroll list
if
the ‘Promote’
feature has been used (see Chapter 3,
Edit Level
). When you reach the end of this scroll list,
pressing
will return you to the
Home
display.
Op
100.0
26.0
O
C
X2
Power on
26.0
20.0
2-4 HA025041 issue 12 Aug 14
Summary of Contents for XST-2-0-12-1V1-E28
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