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6 Operation
Rotary pushbutton
The rotary pushbutton is located underneath
the front protective cover. The positioner is
operated on site using the rotary pushbutton:
Turn
: Select codes and values
Press
: confirm setting.
AIR TO OPEN/AIR TO CLOSE slide switch
− AIR TO OPEN applies to a valve opening
as the signal pressure increases.
− AIR TO CLOSE applies to a valve closing
as the signal pressure increases.
The signal pressure is the pneumatic pressure
at the output of the positioner applied to the
actuator.
Initialization key
Fig. 35: Operating controls
EB 8384-6S EN
AIR TO OPEN always applies to positioners
with a mounted reversing amplifier for dou-
ble-acting rotary actuators (connections ac-
cording to section 5.9).
Volume restriction Q
The volume restriction serves to adapt the air
output capacity to the size of the actuator.
Depending on the air passage at the actua-
tor, two fixed settings are available.
− For actuators smaller than 240 cm²
− For actuators 240 cm² and larger, select
Readings
Icons assigned to certain codes, parameters
mm
%
and functions are indicated on the display.
S
Cap and rotary switch
mm
%
S
(Type 3271-5), select MIN SIDE.
MAX SIDE for a side connection.
Metal tag of proximity switch
Operation
SSP interface
Switch for AIR TO
OPEN/AIR TO
CLOSE
Volume restriction
Rotary pushbutton
91
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