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  5. Mounting And Operating Instructions

Samson 3374 Mounting And Operating Instructions

Manual is about: Electric Actuator Version with positioner, revision 2

Summary of 3374

  • Page 1

    Electric actuator type 3374 mounting and operating instructions eb 8331-1 en edition march 2004 fig. 1 ⋅ type 3374 actuator mounted on type 3535 three-way valve.

  • Page 2

    Contents page 1 design and principle of operation . . . . . . . . . . . . . . . . . . . . . . 3 1.1 additional equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 installation . . . . . . . . . . ....

  • Page 3: 1.1 Additional Equipment

    1 design and principle of operation the type 3374 electric actuator is used in industrial plants as well as in heating, venti- lation and air-conditioning systems. The linear actuator is suitable for form-fit at- tachment to various samson valve series, depending on the version with or without fail-...

  • Page 4: 1.2 Technical Data

    1.2 technical data actuator type 3374 -10 -11 -15 -21 -26 -31 -36 version with yoke ring nut yoke ring nut yoke ring nut fail-safe action without actuator stem extends actuator stem retracts rated travel mm 30 15 30/15 15 actuating time for rated travel sec 240 120 240/120 120 actuating time for fai...

  • Page 5

    Digital positioner 1) operating mode 1 operating mode 2 operating mode 3 input variable 2) range 4...20 ma, ri = 0.05 k Ω 2...10 v, ri = 10 k Ω 0...20 ma, ri = 0.05 k Ω 0...10 v, ri = 10 k Ω acc. To predetermined values 3) resolution 10 bit position feedback signal 4) 5) range 4...20 ma, r b ≤ 0.2 k...

  • Page 6: 2 Installation

    2 installation 2.1 mounting position installation depends on the mounting posi- tion of the valve. However, do not install the actuator suspended downwards. 2.2 attachment to the valve series v 2001 (dn 15 to 80), type 3260 valves (dn 65 to 150) and type 3214 valves (dn 65 to 100) 1. Remove protecti...

  • Page 7

    Fig. 2 ⋅ attachment to the valve 1 2.1 3 4 5 6 x 1 2.3 7 3 4 8 9 10 5 1 2.2 7 3 10 4 5 attachment to type 3214 dn 125 to 150 1 actuator 2.1 actuator yoke 2.2 valve yoke 2.3 bonnet 3 actuator stem 4 stem connector 5 plug stem 6 nut 7 ring nut 8 coupling nut 9 lock nut 10 travel indicator scale attach...

  • Page 8: 3 Electrical Connections

    3 electrical connections upon installation of the electric con- nections, you are required to ob- serve the regulations concerning electrical power plant systems ac- cording to din vde 0100 as well as the regulations of your local power supplier. Install electrical connections as indicated on the ci...

  • Page 9

    Warning! Only connect to the main power network when the power is switched off. Only use power interruption devices which ensure that the power cannot be switched on again unintentionally. Particularly for 24 v, 50 hz actuators, use wires with a sufficiently large cross- section to guarantee that th...

  • Page 10: 4 Operation and Adjustment

    4 operation and adjustment 4.1 manual operation of the actua- tor to operate the manual override, place 4 mm hex wrench on the red actuator shaft located at the side of the housing. The hex wrench is delivered with the actua- tor. It is attached to the bottom side of the housing. 4.2 adjustment of a...

  • Page 11

    Fig. 5 ⋅ adjustment 1 2 3 7 5 13 12.1 12 nennhub 15 nennhub 15 13.1 limit switch stem retracts rated travel inscription metal tag stem extends 1 microswitch 2 spindle upwards 3 spindle downwards 5 intermediate gear 7 cam bracket 12 gear potentiometer 1 12.1 potentiometer shaft 13 gear potentiometer ...

  • Page 12

    4.3 setting the digital positioner in the actuator version with digital posi- tioner, the travel is calibrated automatically, so that the travel (controlled variable x) and the input signal (reference variable w) of the positioner can be matched in the best possible way. Additionally, the digital po...

  • Page 13

    Press the button shortly to adjust the travel for the valve closing position with extending actuator stem. Hold the button pressed for longer than 3 seconds (indicated by switchover from sig- nal lamp 8 to signal lamp 9) to adjust the travel for the valve closing position with re- tracting actuator ...

  • Page 14

    After pressing the calibration button (4), the actuator stem first extends to the closing po- sition of the valve as far as it will go. Cali- bration is concluded when both signal lamps (8 and 9) are lit. Travel calibration starts after the mounting position of the potentiometer gear (12) was determ...

  • Page 15: Equipment

    Setting with limited travel range travel calibration is usually based on the maximum travel of the control valve. If, however, the maximum possible travel is to be limited to a smaller travel end value, press the button (4) once at the start of cali- bration while the signal lamp blinks for 10 secon...

  • Page 16: 5.1 Limit Switches

    5.1 limit switches the retrofit kit (order no. 1400-8830) is re- quired to install limit switches. If the actua- tor is not already equipped with poten- tiometers or a positioner, the basic unit (order no. 1400-8829) is also required. The unit includes the spindle gear (2) and the in- termediate gea...

  • Page 17

    5 2 fig. 7 ⋅ retrofitting limit switches, here for model 3374-11000002000, version with potentiometers n en nh ub 15 n en nh ub 15 7 7 5 12 8 6 6 for actuator stem extends retracts for actuator stem extends for actuator stem retracts 1 actuator board 2 spindle gear 3 sleeve 4 spindle 5 intermediate ...

  • Page 18: 5.2 Potentiometers

    5.2 potentiometers actuators with a digital positioner cannot be equipped with potentiometers! To retrofit the potentiometers, an actuator board with the appropriate potentiometers and gears (12 and 13) is required. If the actuator is not already equipped with limit switches, the basic unit (order n...

  • Page 19

    5.3 digital positioner an appropriate actuator board, trovis- view software for 3374 as well as a con- necting cable (order no. 0450-1978) are re- quired to retrofit the digital positioner. If the actuator is not already equipped with limit switches, the basic unit (order no. 1400-8829) is also requ...

  • Page 20: 6 Dimensions In Mm

    6 dimensions in mm version with yoke version with ring nut stem connector 120 50 15 (30) 294 60 193 90 (75) 204 30 (15) 20 eb 8331-1 en dimensions in mm.

  • Page 21

    Eb 8331-1 en 21.

  • Page 22

    Samson ag ⋅ mess- und regeltechnik weismüllerstraße 3 ⋅ 60314 frankfurt am main ⋅ germany phone: +49 69 4009-0 ⋅ fax: +49 69 4009-1507 internet: http://www.Samson.De s/z 2004- 03 eb 8331-1 en.