Samson 3768, Mounting And Operating Instructions

Page: 11 / 48

EB 8356 EN 11
Attachment to the valve
3 Attachment to the valve
The limit switch can be mounted either di-
rectly to SAMSON Type 3277 Actuator or to
valves with cast yokes or rod-type yokes ac-
cording to IEC 60534-6 (NAMUR).
Combined with an intermediate piece, the
limit switch can also be mounted on rotary
actuators.
The standard limit switch is delivered without
accessories. Any additionally required ac-
cessories are listed together with their order
numbers in the tables on page 20 on -
wards.
The limit switch may be mounted on the
right-hand or left-hand side of the valve.
Any subsequent changes to the mounting
position cause the switching function of the
limit switch to change as well. See section 5.
3.1 Direct attachment
1. Fasten the clamp (1.2) to the actuator
stem, making sure that the fastening
screw rests in the groove of the actuator
stem.
2. Fasten the associated lever D1 or D2 to
the lever of the limit switch.
3. Secure the intermediate plate (15) with
the gasket facing towards the yoke.
4. Position and fasten the limit switch onto
the intermediate plate, making sure that
the lever D1 or D2 slides in line over the
pin (1.1) of the clamp (1.2).
5. Mount cover (18).
SUPPL
Y
1.2
18
D2
D1
15
15
Type 3277
Connection block
only for version with
solenoid valve
Switchover plate
only for version with solenoid valve
Type 3277-5 with 120 cm²
View onto the signal pressure connection
< Left attachment Right attachment >
Actuator stem
< extends retracts >
Signal pressure connection
< internal over pipe connection >
With switch plate (old)
Switch plate (13)
Marking
Marking
Actuator stem
retracts
Symbol for
actuator stem
retracts
Symbol for
actuator stem
retracts
Signal pressure
input for left
attachment
Signal pressure
input for right
attachment
Tip of gasket
(16)
extends
extends
Clamp
extends
Cover
Side view of
connection block
with gaskets (new)
Fig. 2: Direct attachment · Mounting of the clamp and signal pressure connection for version with
solenoid valve