Attachment According To Iec 60534-6 - Samson 3767 Mounting And Operating Instructions

3.2 Attachment according to
IEC 60534-6
Required mounting parts are listed in
Table 5. The rated travel of the valve
determines which lever and range spring
(Table 6) are required.
An adapter housing is used for attachment
(Fig. 7). 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), fix the spring
included in the accessories at the back of the
positioner housing as illustrated in Fig. 5.
Left attachment
Mounting position on the plate looking onto the travel pick-up (20), actuator facing upward (see also Fig. 7)
Direct operating direction
>>
Electrical connection
Direct operating direction
>>
Pneumatic connection
Fig. 6: Attachment to the left or right of the valve for NAMUR attachment (IEC 60534-6)
EB 8355-2 EN
Actuator with "actuator stem extends" (FA) fail-safe action
Reverse operating direction
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Pneumatic connections
Actuator with "actuator stem retracts" (FE) fail-safe action
Reverse operating direction
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Electrical connections
Mounting on control valves
Spring
Fig. 5: 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. 6
and Fig. 7). Turn the positioner at the adapt-
er housing by 180° to determine or change
the operating direction of the positioner/
control valve unit.
Right attachment
Direct operating direction
>>
20
Direct operating direction
>>
20
Screw plug
Reverse operating direction
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Electrical connection
Reverse operating direction
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Pneumatic connection
21