Samson TROVIS 3730-3, Mounting And Operating Instructions

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54 EB 8384-3 EN
Mounting and start-up
− Place the lever (1) on the shaft of the po-
sitioner and fasten it tight using the disk
spring (1.2) and nut (1.1).Move lever
once all the way as far as it will go in
both directions.
5. Insert the formed seal (6.2) in the groove
of the adapter bracket.
6. Insert the formed seal (17.1) into the
turnboard (17) and mount the turnboard
to the adapter block (13) using the
screws (17.2).
7. Mount the blank plate (18) to the turn-
board using the screws (18.1). Make
sure that the seals are correctly seated.
A solenoid valve can also be mounted in
place of the blank plate (18). The orientation
of the turnboard (17) determines the mount-
ing position of the solenoid valve. Alterna -
tively, a restrictor plate can be mounted
(
u
AB 11).
8. Fasten the adapter block (13) to the
NAMUR connection block using the
screws (13.1).
9. Insert the vent plug into the Exh. connec-
tion.
10. Place the positioner on the adapter block
(13) in such a manner that the follower
pin (2) rests on the top of the follower
plate (3, 3.1). Adjust the lever (1) corre-
spondingly.
Fasten the positioner to the adapter block
(13) using the two fastening screws (6.3).
Make sure the formed seal (6.2) is prop-
erly seated.
11. For single-acting actuators without air
purging , connect the Y1 port of the
adapter block to the signal pressure con-
nection of the actuator. Seal the Y2 port
with a blanking plug.
For
double-acting actuators and actua -
tors with air purging , connect the Y2
port of the adapter block to the signal
pressure connection of the second actua-
tor chamber or spring chamber of the
actuator.
5.6 Attachment according to
VDI/VDE 3847-2
Attachment according to VDI/VDE 3847-2
for PFEIFFER SRP (single-acting) and DAP
(double-acting) rotary actuators in sizes 60
to 1200 with NAMUR interface and air
purging of the actuator's spring chamber al-
lows the direct attachment of the positioner
without additional piping.
Additionally, the positioner can be replaced
quickly while the process is running by
blocking the air in single-acting actuators.
Procedure to block the actuator in place
(see Fig. 12):
1. Unscrew the red retaining screw (1).
2. Turn the air blocker (2) on the bottom of
the adapter block according to the in-
scription.
6.2 6.1 6
4
6.3
5
1
2
16
3
3.1
11
18
18.1
13.1 13
17.2 17 17.1
10
3
Exh.
19
20
14
14.1
1.1
1.2
1 Lever
1.1 Nut
1.2 Disk spring
2 Follower pin
3 Follower plate
3.1 Follower plate
4 Screw plug
5 Stopper
6 Adapter bracket
6.1 Screws
6.2 Formed seal
6.3 Screws
10 NAMUR connection
block
11 Screw with toothed
lock washer
13 Adapter block
13.1 Screws
14 Bolt
14.1 Screws
15 Formed plate
16 Bracket
17 Turnboard
17.1 Formed seal
17.2 Screws
18 Dummy plate
18.1 Screws
19 Air blocker
20 Retaining screw
Fig. 11: Attachment according to VDI/VDE 3847-1 to a NAMUR rib
Note