Samson Electri Actuator Type 3374 EB 8331-1 EN User Manual

Page 2

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Contents

Page

1

Design and principle of operation. . . . . . . . . . . . . . . . . . . . 5

1.1

Additional equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1

Mounting position. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2

Attachment to the valve . . . . . . . . . . . . . . . . . . . . . . . . . 8

3

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . 10

4

Operation and setting . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1

Manual operation of the actuator. . . . . . . . . . . . . . . . . . . . 12

4.2

Setting the additional equipment . . . . . . . . . . . . . . . . . . . . 12

4.2.1

Limit contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2.2

Resistance transmitters . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3

Setting the digital positioner . . . . . . . . . . . . . . . . . . . . . . 14

5

Retrofitting additional electrical equipment . . . . . . . . . . . . . . 17

5.1

Installing the basic unit with new intermediate plate (index 6) . . . . . . 18

5.1.1

Limit contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.2

Resistance transmitters or digital positioner . . . . . . . . . . . . . . . 18

5.2

Limit contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.3

Resistance transmitters . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.4

Digital positioner . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.4.1

Calibrating the positioner . . . . . . . . . . . . . . . . . . . . . . . 23

5.4.2

Simplest method to calibrate the actuator . . . . . . . . . . . . . . . . 24

6

Dimensions in mm. . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2

EB 8331-1 EN

Contents

Note: Actuators with a CE marking fulfill the requirements of the Directives 94/9/EC and

89/336/EEC.

The Declaration of Conformity is available on request.

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