Samson 3731-5, Монтаж и эксплуатация

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50 EB 8387-5 EN
Operating controls and readings
6.3 Reading
Icons assigned to certain codes, parameters
and functions are indicated on the display
(see Fig. 16).
Operating modes:
− Manual mode (see section 8.2.1)
The positioner follows the manual set
point (Code 1) instead of the set point of
the Analog Output Block.
blinks: The positioner is not initial-
ized. Operation only possible over man-
ual set point (Code 1).
−
Automatic mode (see section 8.2.1)
The positioner is in closed-loop operation
and follows the set point of the Analog
Output Block.
− Fail-safe position (see section 8.2.2)
The positioner vents the output. The valve
moves to the mechanical fail-safe posi-
tion.
−
Bar graph
In manual and automatic modes, the
bars indicate the set point deviation that
depends on the sign (+/–) and the value.
One bar element appears per 1 % set
point deviation. If the positioner has not
been initialized, ( blinks on the dis-
play), the bar graph indicates the lever
position in degrees in relation to the
mid-axis. One bar element corresponds
to approximately a 5° angle of rotation.
The fifth bar element blinks (reading >
30°) if the permissible angle of rotation
has been exceeded. Lever and pin posi-
tion must be checked.
− Status messages
: Maintenance alarm
: Maintenance demanded/Mainte-
nance required
These icons indicate that an error has oc-
curred. A classified status can be as-
signed to each error. Classifications in-
clude 'No message', 'Maintenance re-
quired', 'Maintenance demanded' and
'Maintenance alarm' (see section 8.3 on
EXPERTplus valve diagnostics).
−
Enable configuration
This indicates that the codes marked with
an asterisk (*) in the code list (see sec-
tion 12.3) are enabled for configuration
(see section 8.1).