Samson 3767 - Page 43

EB8355-2EN 43
Operation
Adjustingtheswitchingpoint
Move the valve to the switching point and
adjustthetagbyturningtheadjustment
screw(53)sothattheswitchingpointis
reachedandindicatedbytheLEDonthe
switchingamplier.
Toguaranteetheswitchingunderallambient
conditions, adjust the switching point ap-
prox.2%beforethemechanicalstop
(OPEN/CLOSED).
NOTICE
After tuning the positioner, make sure
that the vent plug of the housing cov-
er faces downward when the valve is
installed.
Table8: Direct attachment to Type3277 Actuator (Fig.3)
Left attachment Right attachment
Switch
Valve position Tag outside inductive
eld
Tag inside inductive
eld
Tag outside inductive
eld
Tag inside inductive
eld
Closed B A A B
Open A B B A
Table9: Right or left attachment according to NAMUR (Fig.6) and attachment to rotary actuators (Fig.8)
Direction
ofaction
Valve
position
Actuatorstemextends(FA) Actuatorstemretracts(FE)
Switch
Tag
Switch
Tag
Outside inductive
eld
Insideinductiveeld
Outside inductive
eld
Insideinductiveeld
>> CLOSED
OPEN
B
A
A
B
A
B
B
A
<> CLOSED
OPEN
A
B
B
A
B
A
A
B