Samson 3730 Series 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 the
version "Actuator stem extends".
For the fail-safe position "Actuator stem re-
tracts" the connection on the top diaphragm
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.
20
21
Symbol
Marking
Fig. 12 · Mounting for Type 3277-5 Actuator (left) and Type 3277 Actuator (right)
Attachment to the control valve – Mounting parts and accessories
2. Screw the position sensor (20) onto the
3. Depending on the actuator size and
4. Place the lever (1) and disk spring (1.2)
1
2
3
11
1.1
1.2
9
Signal pressure
Actuator stem
extends
mounting plate (21).
rated travel of the valve, determine the
required lever and position of the fol-
lower pin (2) from the travel table on
page 15.
The positioner is delivered with lever M
in pin position 35 on the sensor. If nec-
essary, remove the follower pin (2) from
its pin position and move it to the bore-
hole for the recommended pin position
and screw tight.
on the sensor shaft.
Signal pressure
Signal
Vent 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 8384-3 EN