Samson 3730-2 Mounting And Operating Instructions page 31

Type 3277 Actuator with 240 to 700 cm²
The signal pressure is routed to the connec-
tion at the side of the actuator yoke for ver-
sion "Actuator stem extends".
For fail-safe position "Actuator stem re-
tracts", the connection on the top dia-
phragm case is used. The connection at the
side of the yoke must be fitted with a venting
plug (accessories).
Mounting the position sensor
1. Place the lever (1) on the sensor in
mid-position and hold it in place.
Unthread the nut (1.1) and remove the
lever together with the disk spring (1.2)
from the sensor shaft.
Symbol
Marking
Fig. 12 · Mounting for Type 3277-5 (left) and Type 3277 (right) Actuators
Attachment to the control valve – mounting parts and accessories
2. Screw the position sensor (20) onto the
3. Depending on the actuator size and rated
4. Place the lever (1) and disk spring (1.2)
Signal pressure
Signal pressure
Actuator stem
extends
mounting plate (21).
travel of the valve, determine the required
lever and position of the follower pin (2)
from the travel table on page 15.
The positioner is delivered with lever M in
pin position 35 on the sensor. If neces-
sary, remove the follower pin (2) from its
pin position and move it to the borehole
for the recommended pin position and
screw tight.
on the sensor shaft.
Venting plug
retracts
1 Lever
1.1 Nut
1.2 Disk spring
2 Follower pin
3 Follower clamp
9 Connecting plate
11 Cover
20 Position sensor
21 Mounting plate
31
EB 8384-2 EN