46
EB 8384-6S EN
Mounting and start-up
5.3 Direct attachment
5.3.1
Type 3277-5 Actuator
Î
Required mounting parts and accesso
-
ries: Table 3
Î
Observe the travel table on page 28.
Actuator with 120 cm²
The signal pressure from the positioner is
routed over the signal pressure connection of
the connecting plate (9, Fig. 25 left) to the
actuator diaphragm chamber. To proceed,
first screw the connecting plate (9) included
in the accessories onto the actuator yoke.
−
Turn the connecting plate (9) so that the
correct symbol for the fail-safe action
"actuator stem extends" or "actuator stem
retracts" is aligned with the marking (Fig.
25, below).
−
Make absolutely sure that the gasket for
the connecting plate (9) is correctly insert-
ed.
−
The connecting plate has threaded holes
with NPT and G threads. Seal the thread-
ed connection that is not used with the
rubber seal and square plug.
3. Mount connecting plate (6) or pressure
gauge bracket (7) with pressure gauges
on the positioner, making sure the two
seals (6.1) are seated properly.
4. Place follower clamp (3) on the actuator
stem, align it and screw tight so that the
mounting screw is located in the groove
of the actuator stem.
5. Mount cover plate (10) with narrow side
of the cut-out (Fig. 6, on the left) pointing
towards the signal pressure connection.
Make sure that the gasket (14) points to-
wards the actuator yoke.
6.
15 mm travel:
Keep the follower pin (2)
on the M lever (1) on the back of the po-
sitioner in the pin position 35 (delivered
state).
7.5 mm travel:
Remove the follower pin
(2) from the pin position 35, reposition it
in the hole for pin position 25 and screw
tight.
7. Insert molded seal (15) into the groove of
the positioner housing and insert the seal
(10.1) on the back of the housing.
8. Place positioner on the cover plate (10)
in such a manner that the follower pin
(2) rests on the top of the follower clamp
(3). Adjust the lever (1) correspondingly
and open the positioner cover to hold the
positioner shaft in position at the cap or
rotary pushbutton. The lever (1) must rest
on the follower clamp with spring force.
Fasten the positioner on the cover plate
(10) using the two fastening screws.
The following applies to all types of attach
-
ment except for direct attachment to
Type 3277-5:
The signal pressure output at the back must
be sealed by the screw plug (4, order no.
0180-1436) and the associated O-ring (or-
der no. 0520-0412).
9. Mount cover (11) on the other side.
Make sure that the vent plug is located at
the bottom when the control valve is in-
NOTICE
!
Only use the connecting plate (6)
included in the accessories to connect
supply and output.
Never screw threaded parts directly
into housing.
9 11
Supply 9
Output 38
5
6
7
6
10
10.1
3
2
1
15
6.1
1.1
1.2
14
8
Actuator stem
extends
retracts
Symbol
Marking
Cut-out of
cover plate
1
Lever
1.1 Nut
1.2 Disk spring
2
Follower pin
3
Follower clamp
5
Stopper
6
Connecting plate
6.1 Seals
7
Pressure gauge bracket
8
Pressure gauge
mounting kit
9
Switchover plate
(actuator)
10
Cover plate
10.1 Seal
11
Cover
14
Gasket
15
Molded seal
Signal pressure
Fig. 6:
Direct attachment – Signal pressure connection for Type 3277-5 Actuator with 120 cm²
Note
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