Samson 3766 - Attachment According to IEC 60534-6

EB 8355-1 EN 21
Mounting on control valves
Left attachment Right attachment
Mountingpositionontheplatelookingontothetravelpick-up(20),actuatorfacingupward(seealsoFig.6)
Actuatorwith“actuatorstemextends”(FA)fail-safeaction
Direct oper. direction >> Reverse oper. direction <> Direct oper. direction >> Reverse oper. direction <>
20
Output and supply InputInput
Actuatorwith“actuatorstemretracts”(FE)fail-safeaction
Direct oper. direction >> Reverse oper. direction <> Direct oper. direction >> Reverse oper. direction <>
20
Output and supply Output and supplyInput
Fig.5: Attachment to the left or right of the valve for NAMUR attachment (IEC60534-6)
3.2 Attachment according to
IEC60534-6
Required mounting parts are listed in Ta-
ble5.Theratedtravelofthevalvedeter-
mines which lever and range spring (Ta-
ble6)arerequired.
An adapter housing is used for attachment
(Fig.6).Thevalvetravelistransmittedbythe
lever(18)andtheshaft(25)tothebracket
(28) of the adapter housing and then passed
ontothepin(27a)ontheleveroftheposi-
tioner.Toensurethatthepin(27a)isproper-
lylocatedinthebracket(28),xthespring
included in the accessories at the back of the
positionerhousingasillustratedinFig.4.
Spring Screw plug
Fig.4: Installing the spring on the back of the
housing
The positioner can be mounted either on the
leftorrightsideofthecontrolvalve(Fig.5
andFig.6).Turnthepositionerattheadapt-
erhousingby180°todetermineorchange
the operating direction of the positioner/
control valve unit.