EB 8384-5 EN
63
Start-up and settings
slide switch position and re-initialize the po-
sitioner.
Note:
The switch position is prompted prior
to an initialization. After an initial-
ization has been completed, chang
-
ing the switch position does not have
any effect on the operation of the po-
sitioner.
7.2
Adjusting the volume re
-
striction Q
MAX BACK
MIN SIDE
MIN BACK
MAX SIDE
Q
Fig. 24:
Volume restriction Q
MAX BACK/MIN SIDE setting
The volume restriction Q serves to adapt the
air output capacity to the size of the actua-
tor:
−
Actuators with a
transit time < 1 s
, e.g.
linear actuators with an effective area
smaller than 240 cm², require a restrict-
ed air flow rate (MIN).
−
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
:
−
The SIDE position applies for actuators
with a loading pressure connection at the
side, e.g. Type 3271-5.
−
The BACK position applies for actuators
with a loading pressure connection at the
back, e.g. Type 3277-5.
−
The SIDE restriction position always ap-
plies for actuators from other manufac-
turers.
Overview · Position of the volume restric
-
tion Q*
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 settings are not permitted.
NOTICE
Malfunction due to changed start-up
settings.
Initialize an initialized positioner
again after the position of the volume
restriction has been changed.
7.3
Adapting the display direc
-
tion
To adapt the reading on the display to the
mounting situation of the actuator, the dis-
play contents can be turned by 180°.
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