Samson 4763 - 6 Operating the Positioner; Assignment of the Positioner and the Actuator

EB 8359-2 EN 27
Operating the positioner
6 Operating the positioner
6.1 Assignment of the posi-
tioner and the actuator
Arrangement of the actuator, the mounting
position of the positioner, the reference vari-
able and the operating direction:
Î See Fig.6 to Fig.9
When any subsequent changes are made,
e.g. reversing the operating direction of the
positioner control loop or changing the actu-
ator fail-safe action from “actuator stem ex-
tends” to “actuator stem retracts” or vice ver-
sa, the positioner's mounting position must
be changed accordingly.
Actuator stem extends (FA)
1
20
p
st
w
1
20
p
st
w
Lever (1) on top of plate (20) Plate (20) on top of lever (1)
Fig.6: Operating direction << Left attachment Fig.7: Operating direction <> Right attach-
ment
Actuator stem retracts (FE)
p
st
w
p
st
w
Fig.8: Operating direction << Right attach-
ment
Fig.9: Operating direction <> Left attachment