Samson 3730-4, Mounting And Operating Instructions

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4.3 Operating modes
4.3.1 Automatic and manual
operating modes
Prior to initialization:
If the positioner has not been initialized yet,
the automatic operating
AUtO cannot be se-
lected.
The valve can only be positioned manually
with the positioner.
To proceed, turn button clockwise until
Code 1 appears, then confirm Code 1 by
pressing the button.
If both the code number and the hand sym-
bol are blinking, the valve can be manually
positioned by turning the
button.
After initialization:
After successful initialization in the
MAX
,
NOM or MAN mode (section 5.6.1), the
positioner is in the automatic control opera-
tion mode
.
Default
Switching to manual operating mode
Over Code
0
, press the button,
AUtO
appears in the display, Code 0 blinks.
Turn button until MAN appears.
Press button to switchover to the manual
operating mode .
The switchover is smooth since the manual
operating mode starts up with the set point
last used during automatic operating mode.
The current position is displayed in %.
Adjusting the manual set point
Turn button until Code 1 appears.
Press button to confirm, Code 1 blinks.
While Code 1 is blinking, you can move the
valve to the position required by turning the
button. To proceed, turn the button until
enough the positioner has built up enough
pressure and the control valve starts to react.
The positioner automatically returns to man-
ual mode with Code
0
if the button is not ac-
tivated within two minutes.
Switching from manual to automatic oper-
ating mode
works in the same manner.
First, you must reset the positioner over
Code
0 to automatic mode AUtO and con-
firm this setting.
EB 8384-4 EN
57
Operation
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