Samson 3374 Service manual
Mounting and Operating
Instructions
EB 8331-3 EN
Edition September 2012
Electric Actuator
Type 3374
Three-point stepping version
2 EB 8331-3 EN
Denition of the signal words used in these mounting and operating instructions
DANGER!
indicates a hazardous situation which,
if not avoided, will result in death or
serious injury.
WARNING!
indicates a hazardous situation which,
if not avoided, could result in death or
serious injury.
NOTICE
indicates a property damage mes-
sage.
Note:
Supplementary explanations, informa-
tion and tips
EB 8331-3 EN 3
Contents
1 General safety instructions.............................................................................5
2 Design and principle of operation ..................................................................6
2.1 Additional equipment.....................................................................................6
2.2 Technical data ...............................................................................................7
3 Installation..................................................................................................10
3.1 Mounting position........................................................................................10
3.2 Attachment to the valve ................................................................................10
3.2.1 Construction with integrated yoke..................................................................10
3.2.2 Construction with ring nut.............................................................................10
4 Electrical connections...................................................................................12
5 Manual override .........................................................................................14
6 Limit contacts ..............................................................................................15
6.1 Retrottingthelimitcontacts..........................................................................15
6.1.1 Retrotting(withoutresistancetransmitters).....................................................16
6.1.2 Retrotting(whenresistancetransmittersarealreadyinstalled).........................18
6.2 Adjusting the limit contacts ...........................................................................19
7 Resistance transmitters.................................................................................20
7.1 Retrottingtheresistancetransmitters.............................................................20
7.1.1 Retrotting(withoutlimitcontacts)..................................................................20
7.1.2 Retrotting(whenlimitcontactsarealreadyinstalled)......................................22
7.2 Calibrating the resistance transmitters............................................................23
8 Dimensions in mm.......................................................................................24
9 Nameplate..................................................................................................25
10 Customer inquiries ......................................................................................25
11 Appendix....................................................................................................26
General safety instructions
EB 8331-3 EN 5
1 General safety instructions
For your own safety, follow these instructions concerning the mounting, start up and opera-
tion of the actuator:
−
The device is to be assembled, started up or operated only by trained and experienced per-
sonnel familiar with the product. According to these mounting and operating instructions,
trained personnel refers to individuals who are able to judge the work they are assigned
to and recognize possible dangers due to their specialized training, their knowledge and
experience as well as their knowledge of the applicable standards.
−
Any hazards that could be caused in the valve by the process medium and the operat-
ing pressure or by moving parts are to be prevented by means of appropriate measures.
−
The actuators are designed for use in low voltage installations. For wiring and maintenance,
you are required to observe the relevant safety regulations. Only use protective equipment
in which the power supply cannot be reconnected inadvertently.
−Before wiring the actuator, disconnect it from the power supply.
To avoid damage to any equipment, the following also applies:
−Proper shipping and storage are assumed.
Note:
Actuators with a CE marking fulll the requirements of the Directives 2004/108/EC
and 2006/95/EC.
The Declaration of Conformity is available on request.
Design and principle of operation
6 EB 8331-3 EN
2 Design and principle of op-
eration
The Type 3374 Electric Actuator is used in in-
dustrial plants as well as in heating, ventila-
tion and air-conditioning systems.
Theactuatorissuitableforform-tattachment
to various SAMSON valve series, depending
on the version with or without fail-safe action.
The synchronous motor is switched off by
torque-dependent limit switches in the end po-
sitions or in case of overload. The force of the
motor is transmitted to the actuator stem via
gearing and ball screw.
Testing according to DINEN14597
TheType3374ElectricActuatorwithfail-ac-
tion "Actuator stem extends" is tested by the
GermanTechnicalInspectorate(TÜV)accord-
ingtoDINEN14597incombinationwith
various SAMSON valves. The register num-
ber is available on request.
2.1 Additional equipment
The actuator can be equipped with limit con-
tactsand/orresistancetransmitterstoinu-
ence the tasks of control equipment. Refer to
sections 6 and 7.
Design and principle of operation
EB 8331-3 EN 7
2.2 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 Stem extends Stem retracts
Rated travel mm 30 15 30 15
Transit time for rated travel
Standard s 240 120 240 120
Fast s 120 60 120 60
in case of fail-safe action s – 12
Stroking speed
Standard mm/s 0.125 0.125
Fast mm/s 0.25 0.25
in case of fail-safe action mm/s – 1.25
Actuating force 2.5 kN
Stem retracts or extends
2 kN
Stem extends
0.5 kN
Stem retracts
Power supply 230V,+10/–15%, 50Hz,
230V,+10/–15%, 60Hz,
24V,+10/–15%, 50Hz,
24V,+10/–15%, 60Hz,
120V(90to132V),60Hz
Power consumption VA 7.5/13 2) 10.5/16 2)
Motor switch-off Torque-dependent
Ambient temperature range
5 to 60 °C
Storage temperature
–20to+70°C
Degree of protection IP54acc.toEN60529,(IP65withthreecableglands1))
Suspended mounting position not approved
Overvoltage category II according to EN 60664
Design and testing EN 61010
Class of protection II according to EN 61140
Noise immunity EN 61000-6-2, EN 61326
Noise emission EN 61000-6-3, EN 61326
Design and principle of operation
8 EB 8331-3 EN
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 Stem extends Stem retracts
Manual override Hexwrench·Adjustmentnotpossibleafterfail-safeactionhas
been triggered
Manual override of actuators with fail-safe action only possible
whenpowersupplyisconnected(seesection5)
Weight kg(approx.) 3.2 3.3 3.9 4.0 3.5 3.6
Materials Housingandcover:Plastic(glass-berreinforcedPPO)
Additional electrical equipment
Limit contacts Two travel-dependent, adjustable changeover switches,
perm.load250VAC;3A
Resistance transmitters 2) 0to1000Ω,(0to900Ωatratedtravel)
max. permissible current 1 mA
1) CableglandsM20x1.5withmetalnut(23/24mmwidthacrossats)
2) Actuator with faster motor
Installation
10 EB 8331-3 EN
3 Installation
3.1 Mounting position
Installation depends on the mounting position
of the valve. The actuator must not be sus-
pended to hang downwards.
3.2 Attachment to the valve
3.2.1 Construction with inte-
grated yoke
Fig. 1A: Attachment to
– Series V2001 Valves (DN 15 to 80)
– Type 3260 (DN 65 to 150)
– Type 3214 (DN 65 to 100)
1.
Remove protective covers and unscrew nut
(6)fromthevalve.
2.
Retract actuator stem using the manual
override. Refer to section 5.
3.
Place actuator on yoke and fasten tight
usingnut(6,36mmwidthacrossats)
(tighteningtorquemin.150Nm).
4.
Whentheplugstem(5)tscloselyon-
totheactuatorstem(3),attachbothstem
connector clamps (4) and fasten with
screws.
3.2.2 Construction with ring
nut
Fig. 1B: Attachment to Series 240 Valves
1. Push plug stem down to close the valve.
2.
Turnthestemconnectornut(8)untilthe
measurementx=75mm(DN100and
larger:x=90mm)fromthetopofthe
yoke to the head of the stem connector
nut(8)isachieved.Lockthispositionwith
thelocknut(9).
3.
Retract actuator stem using the manual
override. Refer to section 5.
4.
Place actuator onto the valve and secure
usingtheringnut(7).
5.
Whenthestemconnectornut(8)restson
the actuator stem, attach both stem con-
nectorclamps(4)andfastenwithscrews.
6.
Moveactuatorstem(3)totheendposi-
tion(valveclosed)usingthemanualover-
ride or motor.
7.
Align travel indicator scale (10) to the
middle of the stem connector (4) and
screw tight.
Fig. 1C:
Attachment to Type 3214 (DN 125 to 250)
1.
Retract actuator stem using the manual
override. Refer to section 5.
2.
Place actuator onto the valve and secure
usingtheringnut(7).Ifnecessary,retract
the actuator stem slightly beforehand using
the manual override.
3.
Whentheplugstemtscloselyontothe
actuatorstem(3),attachbothstemcon-
nectorclamps(4)andfastenwithscrews.
4.
Moveactuatorstem(3)totheendposi-
tion(valveclosed)usingthemanualover-
ride or motor.
5.
Align travel indicator scale (10) to the
middle of the stem connector (4) and
screw tight.
Other manuals for 3374
6
This manual suits for next models
7
Table of contents
Other Samson Controllers manuals
Samson
Samson 45-9 Service manual
Samson
Samson 3430 User manual
Samson
Samson BR 31a Series Quick guide
Samson
Samson TROVIS 5400 Service manual
Samson
Samson TROVIS 6495-2 Service manual
Samson
Samson 3271 Service manual
Samson
Samson foundation 3787 Service manual
Samson
Samson EB 2090 User manual
Samson
Samson Type 5824 Service manual
Samson
Samson 3222/5724 Service manual
Samson
Samson series 43 Service manual
Samson
Samson 3730 Series Service manual
Samson
Samson TROVIS 5571 Service manual
Samson
Samson 43-3 Service manual
Samson
Samson 5827 Service manual
Samson
Samson TROVIS 5757-3 Instruction sheet
Samson
Samson 3277 User manual
Samson
Samson 45-6 Service manual
Samson
Samson 3277 Service manual
Samson
Samson TROVIS 5579 Service manual
Popular Controllers manuals by other brands
Digiplex
Digiplex DGP-848 Programming guide
YASKAWA
YASKAWA SGM series user manual
Sinope
Sinope Calypso RM3500ZB installation guide
Isimet
Isimet DLA Series Style 2 Installation, Operations, Start-up and Maintenance Instructions
LSIS
LSIS sv-ip5a user manual
Rockwell Automation
Rockwell Automation 1769-L31 installation instructions
