Operating Modes; Automatic And Manual Operating Modes - Samson 3730-3 Mounting And Operating Instructions

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
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
This type of manual adjustment is used to
check the operating range of the positioner,
see also section 5.4 on page 45.
After initialization:
After successful initialization in the MAX ,
NOM or MAN mode (section 5.5.1), the
positioner is in the automatic control
operation mode
%
button clockwise until
button.
.
Standard
Switching to manual operating mode
Over Code 0 , press the
appears in the display, Code 0 blinks.
Turn button until MAN appears.
Press button to confirm, the hand symbol
appears and then the current position in %.
Turn button until Code 1 appears.
%
Press button to confirm, Code 1 blinks.
The positioner is in 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 required valve position can be adjusted
by turning the button.
Note!
Switching from manual to automatic operat-
ing mode works in the same manner.
First, you must reset the positioner to Code 0
and set it to automatic mode AUtO and con-
firm.
Operation
button, AUtO
%
43
EB 8384-3 EN