EB 8389-1S EN
11
Description
1.3.1
Type of application
Different diagnostic functions are available
depending on the type of application select-
ed in EXPERTplus. The types of application
'Control valve'
and
'On/off valve'
are
available. Depending on the type of applica-
tion selected, the positioner behaves differ-
ently in the automatic mode (AUTO):
−
Control valve
The positioner uses the set point to posi-
tion the valve.
The valve position (current position) ap-
pears in % on the display.
−
On/off valve
Discrete analysis of the set point
The valve position (current position) in %
and O/C (Open/Close) appear in alter-
nating sequence on the display. See
u
1.3.2
Assessment
Table 1 shows the diagnostic functions and
their statements on the condition of the valve
depending on the type of application.