Samson 3730-4 - Fail-Safe Position (SAFE)

EB 8384-4 EN 77
Operation
%
Automatic mode
Switching to manual mode (MAN)
Turn  Code 0
Press
, display: AUtO, Code 0 blinks.
Turn
 MAN
Press
. The positioner changes to the man-
ual mode (
).
The manual mode starts using the last set
point of the automatic mode, ensuring a
bumpless changeover. The current position is
displayed in %.
Adjust the manual set point
% %
Turn  Code 1
Press
, Code 1 blinks.
Turn
until sufcient pressure has been
built up in the positioner and the control
valve moves to the required position.
The positioner automatically returns to
Code0 if no settings are made within
120seconds, but remains in the manual
mode.
Switch to
automatic mode
Turn
 Code 0
Press
, Code 0 blinks.
Turn
 AUtO
Press
. The positioner switches to automat-
ic mode.
8.2.2 Fail-safe position (SAFE)
If you want to move the valve to the fail-safe
position 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.
If the positioner has been initialized, the cur-
rent valve position in % is indicated on the
display.
Note