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Samson Type 3766 User Manual

Samson Type 3766
56 pages
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Contents Page
1 Design and principle of operation. . . . . . . . . . . . . . . . . . . . 4
1.1 Versions (article code). . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Attachment to control valve . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Direct attachment to Type 3277 Actuator . . . . . . . . . . . . . . . . 10
2.2 Attachment according to IEC 60534-6 . . . . . . . . . . . . . . . . . 15
2.2.1 Mounting sequence . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.2 Presetting the travel . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3 Attachment to rotary actuators . . . . . . . . . . . . . . . . . . . . . 19
2.3.1 Mounting the cam follower lever . . . . . . . . . . . . . . . . . . . . 20
2.3.2 Mounting the intermediate piece . . . . . . . . . . . . . . . . . . . . 20
2.3.3 Default setting of the cam disk . . . . . . . . . . . . . . . . . . . . . 22
2.3.4 Reversing amplifier for double-acting actuators . . . . . . . . . . . . . 26
3 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1 Pneumatic connections . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.1 Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.2 Supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.2 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2.1 Switching amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1 Setting the positioner at the valve. . . . . . . . . . . . . . . . . . . . 32
4.1.1 Adjusting the proportional band Xp and air delivery Q . . . . . . . . . 33
4.1.2 Settings for actuator: "Actuator stem extends". . . . . . . . . . . . . . 33
4.1.3 Settings for actuator: "Actuator stem retracts". . . . . . . . . . . . . . 34
4.2 Changing the operating direction . . . . . . . . . . . . . . . . . . . 35
4.3 Adjusting the limit switches. . . . . . . . . . . . . . . . . . . . . . . 36
4.4 Adjusting the position transmitter. . . . . . . . . . . . . . . . . . . . 38
5 Converting the positioner . . . . . . . . . . . . . . . . . . . . . . . 40
6 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.1 Servicing explosion-protected devices . . . . . . . . . . . . . . . . . 42
6.2 Maintenance, calibration and work on equipment. . . . . . . . . . . . 42
7 Dimensions in mm. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Test certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
EB 8355-1 EN 3
Contents

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Samson Type 3766 Specifications

General IconGeneral
BrandSamson
ModelType 3766
CategoryValve Positioners
LanguageEnglish

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