bürkert 8635 Betriebsanleitung Seite 136

Operating the process
Each time after switching on the voltage supply, the positioner is automatically in the process operating level. To get there from the
configuration level, confirm the menu item
In the process operating level, the normal controlled operation is executed and monitored (in the AUTOMATIC mode), and the valve
opened or closed by hand ( MANUAL mode).
Switching between the operating modes:
5 s
Operating mode
AUTOMATIC
MANUAL
Type 8635 S/HART
by pressing the
Operate the key to switch between the MANUAL and AUTOMATIC modes.
Both in the MANUAL and the AUTOMATIC modes, you can change to the configuration level by pressing
the key for longer than 5 seconds.
On switching back to the process operating level, the operating mode is resumed that was set before
switching over.
An apostrophe (') runs continuously from left to right
O
PERATING THE
key.
Display
-
P
OSITIONER
OP 23