Samson 3730-6, Mounting And Operating Instructions

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8.2.2 Fail-safe position (SAFE)
If you want to move the valve to fail-safe po-
sition determined during start-up (see sec-
tion 7.1), proceed as follows:
Turn ® Code 0
Press , display: current operating mode
(
AUTO
or
MAN
), Code 0 blinks
Turn ®
SAFE
Press , display:
S
The valve moves to the fail-safe position.
Once the positioner is initialized, the current
valve position is indicated on the display in
%.
Exit the fail-safe position
Turn ® Code 0
Press , Code 0 blinks
Turn and select the required operating
mode
AUTO
or
MAN
.
Press .
The positioner switches to the operating
mode selected.
8.3 Malfunction/Failure
All status and error messages are classified
according to a status in the positioner. The
default settings of the status classification are
listed in the code list.
Note: The status classification can only be
changed in the operator software, e.g.
TROVIS-VIEW 4. For more details, refer to
the Operating Instructions EB 8389-1 EN on
EXPERTplus Valve Diagnostics.
To provide a better overview, the classified
messages are summarized in a condensed
state. The following status messages are
available:
4
Failure
The positioner cannot perform its control
task due to a functional fault in the de-
vice or in one of its peripherals or an ini-
tialization has not yet been successfully
completed.
4
Maintenance required
The positioner still performs its control
task (with restrictions). A maintenance
requirement or above average wear has
been determined. The wear tolerance will
soon be exhausted or is reducing at a
faster rate than expected. Maintenance is
necessary in the medium term.
4
Maintenance demanded
The positioner still performs its control
task (with restrictions). A maintenance
demand or above average wear has
been determined. The wear tolerance will
soon be exhausted or is reducing at a
faster rate than expected. Maintenance is
necessary in the short term.
76
EB 8384-6 EN
Operation