Samson 3730 Series User Manual

EB 8384-3 EN 7-3
Start-up and conguration
7.2 Adjusting the volume restriction Q
MAX BACK
MIN SIDE
MIN BACK
MAX SIDE
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.
Fig.7-3: Volume restriction Q
The volume restriction Q serves to adapt the air output capacity to the size of the actuator:
8. Actuators with a transit time < 1s, e.g. linear actuators with an effective area smaller
than240cm²,requirearestrictedairowrate(MIN).
9. Actuators with a transit time ≥ 1sdonotrequiretheairowratetoberestricted(MAX).
The position of volume restriction Q also depends on how the signal pressure is routed at the
actuator in SAMSON actuators:
'SIDE' inscription
– Foractuatorswithasignalpressureconnectionattheside,e.g.Type3271-5
– For actuators from other manufacturers
'BACK' inscription
10. Foractuatorswithasignalpressureconnectionattheback,e.g.Type3277-5
The following applies to positioners with optional analog inputx: the MIN SIDE setting
must always be used for actuators with an air volume of less than one liter.
Malfunction due to changed start-up settings.
Î Initialize an initialized positioner again after the position of the volume restriction has
been changed.
NOTICE
!

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English