Samson 3730-0 Mounting And Operating Instructions - Vdi/vde 3847
20
EB 8384-0 EN
Attachment to the control valve – Mounting parts and accessories
4.3 Attachment according to
VDI/VDE 3847
Type3730-0x00000000x0060xxandType
3730-0x00000000x0070xxPositionerswith
airpurgingoftheactuator’sspringchamber
canbeattachedaccordingtoVDI/
VDE 3847.
Type3730-0x00000000x00x0xxPositioner
withoutairpurgingoftheactuator’sspring
chambercanbeattachedaccordingtoVDI/
VDE 3847.
Thistypeofattachmentallowsthepositioner
tobereplacedquicklywhiletheprocessis
runningbyblockingtheairintheactuator.
Thesignalpressurecanbeblockedintheac-
tuatorbyunscrewingtheredretainingscrew
(20)andthenturningtheairblocker(19)on
thebottomoftheadapterblock.
Attachment to Type 3277 Actuator (see
Fig. 6)
−
Requiredmountingpartsandaccesso-
ries:Table 6onpage33
Mountthepositionerontheyokeasshown
inFig. 6.Thesignalpressureisroutedtothe
actuatorovertheconnectingplate(12),for
actuatorswithfail-safeaction“actuatorstem
extends”internallythroughaboreinthe
valveyokeandfor“actuatorstemretracts”
throughexternalpiping.
OnlytheY1portisrequiredforpositioner
attachment.TheY2portcanbeusedforair
purgingofthespringchamber.
1. Placefollowerclamp(3)ontheactuator
stem,alignitandscrewtightsothatthe
mountingscrewislocatedinthegroove
oftheactuatorstem.
2. Placetheadapterbracket(6)onthepo-
sitionerandmountusingthescrews
(6.1).Makesurethatthesealsarecor-
rectlyseated.Forpositionerswith air
purging,removethestopper(5)before
mountingthepositioner.Forpositioners
without air purging,replacethescrew
plug(4)withaventplug.
3. Foractuatorswith355,700or750 cm²,
removethefollowerpin(2)ontheMle-
ver(1)onthebackofthepositionerfrom
pinposition35,repositionitinthehole
forpinposition50andscrewtight.
Foractuators175,240and350 cm²
with15 mmtravel,keepthefollowerpin
(2)inpinposition35.
4. Inserttheformedseal(6.2)inthegroove
oftheadapterbracket(6).
5. Inserttheformedseal(17.1)intothe
turnboard(17)andmounttheturnboard
totheadapterblock(13)usingthe
screws(17.2).
6. Mounttheblankplate(18)totheturn-
board(17)usingthescrews(18.1).
Makesurethatthesealsarecorrectly
seated.
Note:
A solenoid valve can also be mount-
ed in place of the blank plate (18).
The orientation of the turnboard (17)
determines the mounting position
of the solenoid valve. Alternative-
ly, a restrictor plate can be mounted
(
u
AB 11 EN).
18.1
1
17.2 18
17
17.1
13.1
13
12
12.1
3
11.1
11
19
20
Exh.
1.1
1.2
1.1
1.2
1
2
6.2 6.1
6
4
6.3
5
1
Lever
1.1
Nut
1.2
Diskspring
2
Followerpin
3
Followerclamp
4
Screwplug
5
Stopper
6
Adapterbracket
6.1
Screws
6.2
Formedseal
6.3
Screws
11
Cover
11.1
Vent plug
12
Connecting plate
12.1
Seal
13
Adapterblock
13.1
Screws
17
Turnboard
17.1
Formedseal
17.2
Screws
18
Blankplate
18.1
Screws
19
Airblocker
20
Retainingscrew
Fig. 6: Attachment according to VDI/VDE 3847 to Type 3277 Actuator