Samson 3730 Series, Mounting And Operating Instructions

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7.1 Setting the volume restriction Q
The volume restriction Q is used to adapt the
air delivery to the size of the actuator:
4
Actuators with a transit time < 1 s , e.g.
linear actuators with an effective area
smaller than 240 cm², require a re-
stricted air flow rate (MIN).
4
Actuators with a transit time
≥
1 s do not
require the air flow rate to be restricted
(MAX).
The position of volume restriction Q also de-
pends on how the signal pressure is routed
at the actuator in
SAMSON actuators
:
4
The “SIDE“ position applies for actuators
with a loading pressure connection at the
side, e.g. Type 3271-5.
4
The “BACK“ position applies for actua-
tors with a loading pressure connection
at the back, e.g. in Type 3277-5.
The “SIDE” restriction position always applies
for
actuators from other manufacturers .
Overview · Position of the volume restriction*
Signal
pressure Transit
time
< 1 s
≥
1 s
Connection at the side MIN SIDE MAX SIDE
Connection at the back MIN BACK MAX BACK
* Intermediate positions are not permitted.
Note: The positioner needs to be initialized
again after the position of the restriction has
been changed.
7.2 Adapting the display
The data representation on the positioner
display can be turned by 180°.
If the displayed data appear upside down,
proceed as follows:
Turn the button until Code P1 appears,
press button to confirm the selected
code. P1 blinks.
Reading direction for right
attachment of pneumatic
connections
Turn button until the display is adjusted
to the desired direction, then confirm rea-
ding direction by pressing the
button.
7.3 Entering the opening
direction
4
AIR TO OPEN/ATO applies to a valve
opening as the signal pressure increases.
4
AIR TO CLOSE/ATC applies to a valve
closing as the signal pressure increases.
40
EB 8384-1 EN
Start-up
MAX BACK
MIN SIDE
MIN BACK
MAX SIDE
Q
Fig. 15 · Volume restriction Q
MAX BACK/MIN SIDE setting