These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.
Î For the safe and proper use of these instructions, read them carefully and keep them for
later reference.
Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesservice@samson.de).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
(www.samson.de) > Product documentation. You can enter the document
number or type number in the [Find:] eld to look for a document.
Denition of signal words
!
DANGER
Hazardous situations which, if not avoided,
will result in death or serious injury
!
WARNING
Hazardous situations which, if not avoided,
could result in death or serious injury
2 EB 8331-4 EN
!
NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action
Contents
1 Safety instructions and measures ...................................................................6
1.1 Notes on possible severe personal injury .........................................................9
1.2 Notes on possible personal injury ...................................................................9
1.3 Notes on possible property damage ..............................................................10
2 Markings on the device ...............................................................................11
17.2.4 Information level ..........................................................................................88
17.2.5 Service level ................................................................................................89
17.2.6 Communication level ....................................................................................91
17.2.7 Further codes on the display .........................................................................92
17.2.8 Excerpt from Modbus list ..............................................................................93
Index ..........................................................................................................98
EB 8331-4 EN 5
Safety instructions and measures
Firmware revisions
OldNew
3.103.11 (internal revisions)
1 Safety instructions and measures
The Type3374 Electric Actuator is designed to operate a mounted globe valve used in
industrial applications as well as in heating, ventilation and air-conditioning systems. The
digital positioner ensures a predetermined assignment of the valve position to the input
signal. The actuator is designed to operate under exactly dened conditions (e.g. thrust,
travel). Therefore, operators must ensure that the actuator is only used in applications that
meet the specications used for sizing the actuator at the ordering stage. In case operators
intend to use the actuator in other applications or conditions than specied, contact
SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
Î Refer to the technical data for limits and elds of application as well as possible uses. See
section3.6.
Reasonably foreseeable misuse
The actuator is not suitable for the following applications:
− Use outside the limits dened during sizing and by the technical data
Furthermore, the following activities do not comply with the intended use:
− Use of non-original spare parts
− Performing service and repair work not described in these instructions
Qualicationsofoperatingpersonnel
The actuator must be mounted, started up, serviced and repaired by fully trained and qualied personnel only; the accepted industry codes and practices are to be observed. 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 hazards due to their
specialized training, their knowledge and experience as well as their knowledge of the applicable standards.
6 EB 8331-4 EN
Safety instructions and measures
Personal protective equipment
No personal protective equipment is required for the direct handling of the electric actuator.
Work on the control valve may be necessary when mounting or removing the electric actuator.
Î Observe the requirements for personal protective equipment specied in the valve docu-
mentation.
Î Check with the plant operator for details on further protective equipment.
Revisionsandothermodications
Revisions, conversions or other modications to the product are not authorized by SAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example.
Furthermore, the product may no longer meet the requirements for its intended use.
Safety features
Upon power supply failure, the Type3374 Electric Actuator causes the valve to move to a
certain fail-safe position. The fail-safe action of SAMSON actuators is specied on the
actuator nameplate.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
prevent hazards that could be caused in the control valve by the process medium, the operating pressure, the signal pressure or by moving parts by taking appropriate precautions. They
must observe all hazard statements, warning and caution notes in these mounting and operating instructions, especially for installation, start-up and service work.
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions to the operating
personnel and to instruct them in proper operation. Furthermore, the operator must ensure
that operating personnel or third persons are not exposed to any danger.
EB 8331-4 EN 7
Safety instructions and measures
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
well as the specied hazard statements, warning and caution notes. Furthermore, the operating personnel must be familiar with the applicable health, safety and accident prevention
regulations and comply with them.
Referenced standards and regulations
The Type3374 Electric Actuator fullls the requirements of the Directives 2014/30/EU and
2014/35/EU. The declaration of conformity includes information about the applied conformity assessment procedure. This declaration of conformity is included in the appendix of
these instructions.
The Type3374 Electric Actuator is designed for use in low voltage installations.
Î For wiring, maintenance and repair, observe the relevant safety regulations.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Mounting and operating instructions of the valve on which the electric actuator is mount-
ed, e.g. for SAMSON valves:
uEB5861 for Type3260 Three-way Valve
uEB5868 for Type3213 and Type3214 Globe Valves
uEB8113 for Type3323 Three-way Valve
uEB8131 for Type3531 Globe Valve for Heat Transfer Oil
uEB8135 for Type3535 Three-way Valve for Heat Transfer Oil
8 EB 8331-4 EN
Safety instructions and measures
1.1 Notes on possible severe personal injury
!
DANGER
Risk of electric shock.
Î Before connecting wiring, performing any work on the device or opening the de-
vice, disconnect the power supply and protect it against unintentional reconnection.
Î Only use power interruption devices that are protected against unintentional recon-
nection of the power supply.
Î Do not remove any covers to perform adjustment work on live parts.
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equipment. Improper opening can lead to valve
components bursting.
Î Before starting any work on the valve, depressurize all plant sections concerned as
well as the valve.
Î Drain the process medium from all the plant sections concerned and from the valve.Î Wear recommended personal protective equipment. See associated valve docu-
mentation.
1.2 Notes on possible personal injury
!
WARNING
Crush hazard arising from moving parts.
The electric actuator contains moving parts (actuator and plug stems), which can injure
hands or ngers if inserted into the actuator.
Î Do not insert hands or ngers into the yoke while the valve is in operation.Î Disconnect the power supply before performing any work on the control valve.Î Do not impede the movement of the actuator or plug stem by inserting objects into
their path.
EB 8331-4 EN 9
Safety instructions and measures
1.3 Notes on possible property damage
!
NOTICE
Risk of damage to the electric actuator due to the power supply exceeding the
permissible tolerances.
The Type3374 Electric Actuator is designed for use according to regulations for
low-voltage installations.
Î Observe the permissible tolerances of the power supply.
Risk of actuator damage due to excessively high tightening torques.
Observe the specied torques on tightening the mounting parts of Type3374 Electric
Actuators. Excessively tightened torques lead to parts wearing out quicker.
Î Observe the specied tightening torques.
Risk of damage to the electric actuator due to incorrect operation of the manual
override.
The actuator stem of the electric actuator can be adjusted manually.
Î Do not operate the manual override while the actuator is running and only when the
power supply is disconnected.
Risk of actuator damage due to incorrect wiring of the binary inputs.
Î Always wire the binary inputs free of voltage.
10 EB 8331-4 EN
2 Markings on the device
2.1 Nameplate
Markings on the device
SAMSON 3374-
Electric Actuator
Var. -ID
Serial no.
U:
max
:
P
s:v:
Digital Positioner
Firmware:
0(4) ... 20 mA DC; Ri = 50 Ω
0(2) ... 10 V DC; Ri = 20 kΩ
SAMSON AG, Germany
1 Type designation
2 Conguration ID
3 Serial number
4 Power supply; power line frequency
5 Power consumption
6 Nominal transit time
7 Stroking speed
8 Thrust (stem retracts)
9 Thrust (stem extends)
10 Fail-safe action
Retracts
4
5
6
11
2
3
F
7
or
F
13
Extends
1
8
9
12
Made in Germany
10
14
0062
11 Firmware version
12 Limit contacts
Mechanical limit contacts
Electronic limit contacts
13 Testing according to DINEN14597
14 Year
EB 8331-4 EN 11
Design and principle of operation
3 Design and principle of oper-
ation
The Type3374 Electric Actuator is used in
industrial plants as well as in heating, ventilation and air-conditioning systems.
The actuator is suitable for form-t attachment to various SAMSON valve series, depending on the version with or without fail-safe action.
The stepper motor is switched off by
torque-dependent switches in the end positions or in case of overload. The force of the
motor is transmitted to the actuator stem via
gearing and ball screw.
The Type3374 Actuator is optionally available with either integrated yoke (Fig.1) or
using an M30x1.5 ring nut (Fig.2) including
the necessary stem connecting parts.
TestingaccordingtoDINEN14597
The Types3374 Electric Actuator with fail-
safe action "actuator stem extends" is tested
by the German technical surveillance association (TÜV) according to DINEN14597 in
combination with various SAMSON valves.
The register number is available on request.
Fig.1: Construction with integrated yoke
3.1 Versions
The Type3374 Electric Actuator is available
with or without fail-safe action.
Version with fail-safe action
Type 3374-2x and Type 3374-3x Actuators
are able to perform a fail-safe action and
contain a spring assembly and an electromag
net. The actuator moves to the fail-safe position when the electromagnet is de-energized.
12 EB 8331-4 EN
-
Fig.2: Construction for mounting with ring nut
Design and principle of operation
3.2 Limit contacts
The actuator can be equipped with either
mechanical or electronic limit contacts to in-
uence the tasks of control equipment.
3.2.1 Mechanical limit contacts
The two mechanical limit contacts can be adjusted independently from one another. They
are operated by mechanical pins. The instal
lation and adjustment of the mechanical limit
contacts is described in section6.1.
-
3.2.2 Electronic limit contacts
The two electronic limit contacts consist of relays with changeover contacts. In contrast to
the mechanical limit contacts, the electronic
limit contacts no longer function after a power
supply failure. The relays are de-energized
and the contacts change to the idle state. The
retrotting and adjustment of the electronic
limit contacts is described in section9.8.
3.3 Manual override
There are two ways to manually move the
actuator stem:
− Manual override with 4mm hex wrench
− MAN operating mode to move the actu-
ator stem manually
3.3.1 Mechanical override
The mechanical manual override is only possible for actuators without fail-safe action. It
is performed by placing a 4mm hex wrench
on the red actuator shaft located at the side
of the housing. The hex wrench is included in
the scope of delivery. It is attached to the
bottom of the housing.
Î Do not operate the manual override
while the actuator is running and only
when the power supply is disconnected.
3.3.2 Moving the actuator
stem manually
First place the actuator into MAN mode to
move the actuator stem manually. The operation and selection of the operating mode
are described in section8.1 on page42.
EB 8331-4 EN 13
Design and principle of operation
3.4 Communication
The Type3374 Electric Actuator has two
communication interfaces:
− Internal serial RS-232 interface for SSP
protocol for conguration using TROVIS-
VIEW.
Î See section7.3
− RS-485 interface (RS-485 module re-
quired) for Modbus-RTU protocol and
SSP protocol for conguration using
TROVIS-VIEW.
Î See section6.3
3.5 Device overview and operating controls
The operating controls are located underneath the housing cover.
Note
To undo the screws on the housing cover, use
a Pozidriv PZ2 screwdriver to get enough
hold on the screw heads.
14 EB 8331-4 EN
Design and principle of operation
6
2
5
1 Rotary pushbutton
2 Display
3 Serial interface
4 Terminals
5 Actuating shaft for mechanical manual override
6 Terminal board for limit contacts
Binary output
ApplicationsPositionerThe travel follows the input signal
DisplayIcons for functions, codes and text eld with backlight
Rotary pushbuttonOperating control for on-site operation to select and con-
InterfaceStandard RS-232 · For point-to-point connection to communication
Current input
Voltage input
Pt 1000 input
Binary input
0/4 to 20 mA, adjustable · Ri = 50 Ω
0/2 to 10 V, adjustable · Ri = 20 kΩ
1)
Measuring range: –50 to 150 °C, 300 µA
2)
By jumpering the terminals, not galvanically isolated
Current0/4 to 20 mA, adjustable · Error message 24 mA
Resolution 1000 steps or 0.02mA
Load Max. 200 Ω
Voltage0/2 to 10 V, adjustable · Error message 12 V
Resolution 1000 steps or 0.01V
Load Minimum 5 kΩ
By jumpering the terminals, not galvanically isolated
Floating, max. 230 V AC/1 A
PID controllerFixed set point control
Two-step modeTwo-step behavior, control over binary input
Three-step modeThree-step behavior, control over binary input
Temperature closed-
loop control upon
The integrated PID controller uses a xed set point for
closed-loop control when the input signal is missing.
input signal failure
rm codes and values
participants or for memory pen · Permanently installed ·
Connection: RJ-12 connector socket
1)
For PID Controller (PID) and Temperature closed-loop control upon input signal failure (POSF)
applications only
2)
For two-step mode (2STP) and three-step mode (3STP) applications
18 EB 8331-4 EN
Design and principle of operation
Safety
Motor switch-offBy torque-dependent limit contacts
Degree of protection acc. to EN60529IP54 with cable ducts
IP65 with cable glands (can be retrotted)
Suspended mounting not permitted according to
EN60664
Overvoltage categoryII according to EN61010
Design and testingAccording to EN61010
Class of protectionII according to EN61140
EMCAcc. to EN61000-6-2, EN61000-6-3 and EN61326
Degree of contamination2 according to EN61010
Noise immunityAccording to EN61000-6-2
Noise emissionAccording to EN61000-6-3
Environmental conditions
Mechanical environmental conditionsClass 1M2 according to EN60721-3-1:1998
Class 2M1 according to EN60721-3-2:1998
Class 3M4 according to EN60721-3-3:1998
Class 4M4 according to EN60721-3-4:1998
Permissible temperatures
2)
Ambient5 to 60°C
Storage–25 to +70°C
Ambient conditions
Humidity5 to 95% relative humidity, no dew formation
Compliance
·
1)
Additional electrical equipment
Limit contactsMechanical
Two adjustable limit contacts with changeover switches;
230VAC/1A · Without contact protection
Electronic Two adjustable limit contacts with relay and changeover
switches;
230VAC/1A · Without contact protection
RS-485 module (order no. 1402-1522)Module for Modbus-RTU communication
1)
Cable glands M20x1.5 with metal nut SW 23/24 (order no. 1400-8828)
2)
The permissible medium temperature depends on the valve on which the electric actuator is
mounted. The limits in the valve documentation apply.
EB 8331-4 EN 19
Design and principle of operation
194
120
h
1
*
)
220
h
57
193
3.7 Dimensions in mm
Type3374-10/-11/-21/-31
120
57
298
h
)
50*
*) When actuator stem is fully extended
146
Type 3374Dimension h
-1030
-1115
-2115
-3115
-1530
-2615
-3615
20 EB 8331-4 EN
Types3374-15/-26/-36
193
Design and principle of operation
120
57
146
220
)
*
h
1
h
*) When actuator stem is fully extended
Type 3374 Dimension h Dimension h
-1030–
1
-1115–
-2115–
-3115–
-153090
-261575
-361575
EB 8331-4 EN 21
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as follows:
1. Check the scope of delivery. Compare
the shipment received against the delivery note.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent
(refer to delivery note).
4.1 Unpacking
Note
Do not remove the packaging until immediately before mounting and start-up.
1. Remove the packaging from the electric
actuator.
2. Dispose of the packaging in accordance
with the valid regulations.
4.2 Transporting and lifting
4.2.1 Transporting
− Protect the electric actuator against exter-
nal inuences (e.g. impact).
− Protect the electric actuator against mois-
ture and dirt.
− Observe the permissible transportation
temperature of –25 to +70°C.
4.2.2 Lifting
Due to the low service weight, lifting equipment is not required to lift the electric actuator.
4.3 Storage
!
NOTICE
Risk of electric actuator damage due to
improper storage.
− Observe storage instructions.
− Avoid long storage times.
− Contact SAMSON in case of different
storage conditions or long storage periods.
Note
We recommend regularly checking the electric actuator and the prevailing storage conditions during long storage periods.
Storage instructions
− Protect the electric actuator against exter-
nal inuences (e.g. impact).
− Protect the electric actuator against mois-
ture and dirt.
− Make sure that the ambient air is free of
acids or other corrosive media.
− Observe the permissible storage tem-
perature from –25 to +70°C.
− Do not place any objects on the electric
actuator.
22 EB 8331-4 EN
Mounting and start-up
!
5 Mounting and start-up
!
NOTICE
Risk of malfunction due to incorrectly performed start-up.
Perform start-up following the described sequence.
1. Mount the actuator onto the valve.
Î See section5.1.
2. Connect power supply.
Î See section5.2.
3. Initialize the actuator.
Î See section8.3.
5.1 Mounting the actuator onto the valve
5.1.1 Mounting position
The control valve can be installed in the pipeline in any desired position. However, a suspended mounting position of the actuator is not permissible (see Fig.4).
Fig.4: Mounting position
EB 8331-4 EN 23
Measures for preparation
2.1
5.1.2 Construction with integrated yoke
Attachment
− Series V2001 Valves (DN15 to 80)
− Type 3260 (DN65 to 150)
− Type3214 (DN65 to 100)Î Refer to Fig.5
4. Remove protective covers and unscrew
nut (6) from the valve.
5. Connect the power supply to the actuator
as described in section5.2.
6. Retract actuator stem (3) as described in
section3.3.
7. Place actuator with yoke onto the valve
and fasten tight using nut (6, width
across ats 36) with a minimum tightening torque of 150Nm.
8. When the plug stem (5) ts closely onto
the actuator stem (3), attach both stem
connector clamps (4) and fasten with
screws.
5.1.3 Construction with ring
nut
AttachmenttoSeries240Valves
Î See Fig.6 on page25.
1. Slide plug stem down to close the valve.
2. Turn the stem connector nut (8) until the
measurement x = 75mm (DN100 and
larger: x = 90 mm) from the top of the
yoke to the head of the stem connector
nut (8) is achieved. Lock this position
with the lock nut (9).
5. Place actuator onto the valve bonnet
(2.3) and secure using the ring nut (7).
6. When the stem connector nut (8) rests on
the actuator stem, attach both stem connector clamps (4) and fasten with screws.
Move actuator stem (3) to the end posi-
tion (valve closed) as described in sec-
tion3.3.
7. Align travel indicator scale (10) with the
middle of the stem connector (4) and
screw tight.
AttachmenttoType3214Valve(DN125to
250)
Î Refer to Fig.7
1. Connect the power supply as described
in section5.2.
2. Retract actuator stem (3) as described in
section3.3.
3. Place actuator onto the valve and secure
using the ring nut (7). If necessary, retract the actuator stem slightly beforehand.
4. When the plug stem ts closely onto the
actuator stem (3), attach both stem connector clamps (4) and fasten with screws.
Move actuator stem (3) to the end posi-
tion (valve closed) as described in sec-
tion3.3.
5. Align travel indicator scale (10) with the
middle of the stem connector (4) and
screw tight.
Types3374-15/-26/-36
Connection with ring nut
Attachment to Series240 Valves
1
7
3
4
8
9
5
Fig.6: Attachment to Series240 Valves
Types3374-15/-26/-36
Connection with ring nut
Attachment to Type3214 Valve (DN125 to
250)
1
7
3
10
4
5
Fig.7: Attachment to Type3214
x
EB 8331-4 EN 25
Measures for preparation
5.2 Electrical connections
!
DANGER
Risk of electric shock.
− Upon installation of the electric cables, you
are required to observe the regulations
concerning low-voltage installations ac-
cording to DINVDE0100 as well as the
regulations of your local power supplier.
− Use a suitable power supply which guar-
antees that no dangerous voltages reach
the device in normal operation or in the
event of a fault in the system or any other
system parts.
− Connect the actuator to the electrical net-
work only after the power supply is rst
switched off. Make sure the power cannot
be switched on unintentionally.
!
NOTICE
Risk of actuator damage due to incorrect
wiring of the binary inputs.
Always wire the binary inputs free of voltage.
Î Connect binary signals over oating con-
tacts.
Note
After connecting the power supply
ing up the actuator for the rst time, the start
screen and the error reading E00 "RUNT"
(no initialization performed) appear in alter-
nating sequence (see Fig.13 on
page36).
on start-
5.2.1 Connecting the power
supply
Î Connect the wiring as shown in Fig.8.
Additionally, the terminal assignment depends on the selected application (see
section8.4 on page45 and section8.4.2 on page47).
Î Guide the cables to the spring-cage ter-
minals from the top.
26 EB 8331-4 EN
Measures for preparation
+OUT I
41 44 42 51 54 52
414442515452
0/4 to 20mA
–OUT U/I
0/2 to 10V
+OUT U
+1 IN
–1 IN
+2IN
Inputs 1 to 4
–2IN
(see section8.4.2 for assignment)
+3IN
–3IN
+4IN
4IN
–
Position feedback
OUT B –
OUT B +
Binary output
L
Power supply
N
(depending on version 24VAC and DC; 85 to 264VAC)
Table4: Cables and stranded wires that can be used
CableCross section
Single-wire H05(07) V-U
Fine-wire H05(07) V-K
1)
1)
With wire ferrule acc. to DIN46228-10.25 to 1.5mm²
With wire ferrule and sleeve acc. to DIN46228-40.25 to 0.75mm²
1)
8mm stripped insulation at cable end
0.2 to 1.5mm²
0.2 to 1.5mm²
Fig.8: Electrical connection
EB 8331-4 EN 27
Additional functions
6 Additional functions
6.1 Mechanical limit contacts
6.1.1 Installing the limit contacts
Î When ordering the limit contacts, state the conguration ID and the type designation of
the actuator. Both specications are written on the nameplate (see section2.1).
Î Required accessories (see Fig.9):
To install the electronic limit contacts, the retrot kit (order no. 1402-0898) is required.
Installinglimitcontacts(Fig.10toFig.12):
!
DANGER
Risk of electric shock.
Before installing electrical accessories, switch off the power supply and disconnect the signal
input.
Tip
We recommend applying a small amount of lubricant (e.g. Vaseline) to the spindles on the
gear faces and to the sides of the cogs.
Note
To undo the screws on the housing cover, use a Pozidriv PZ2 screwdriver to get enough hold
on the screw heads.
28 EB 8331-4 EN
9 (2x)16 (2x)38
Additional functions
18 (2x)19 (2x)
17
20
3Serrated ring
8Spacer
9Snap ring
16 Screw
17 Terminal board
18 Adjustment gear
19 Contact cam
20 Cam holder
Note
The contact cams (19) are ready-mounted to the cam holder
(20) and the retaining rings (9) to form the contact cam unit
(21, see Fig.12).
Fig.9: Accessories (order no. 1402-0898)
EB 8331-4 EN 29
Additional functions
18211
18211
1. Undo screws on housing cover and take
the cover off the actuator.
2. Move the actuator stem to the end position
depending on the fail-safe action "actua
tor stem extends" or "actuator stem re-
tracts” (see section3.3).
3. Remove serrated ring and shim from spin
dle (11).
4. Slide adjustment gears (18) onto their
spindles and fasten with one screw (16)
each. Check whether the adjustment gears
can be turned easily. If not, slightly loosen
its screw again.
5. Turn contact cams (19) on the cam holder
(20) as illustrated in Fig.10 correspond
ing with the position of the actuator stem.
6. Slide the spacer (8) onto the spindle (11).
Make sure that the long wire of the tension
spring rests on the spacer and on the in
termediate gear.
7. Slide the contact cam unit (21) onto the
spindle corresponding with the position of
the actuator stem as illustrated in Fig.11.
Make sure that the outermost cog of the
contact cam unit engages in the gear
wheel of the intermediate gear (1). In addition, the adjustment gears (18) must engage properly in the corresponding gears
of the contact cam unit (21).
8. Secure the contact cam unit (21) and in-
termediate gear (1) with the serrated ring
(3); push down the serrated ring as far as
it will go.
9. Position the terminal board (17) at the
base of the support at a 45° angle (ap
prox.) with the switches pointing towards
the gears. Swivel the upper end of the terminal board towards the gears until the
board is in a vertical position and proper
-
ly engaged in the support.
10. Adjust limit contacts as described in sec
-
-
tion6.1.2.
-
191920
-
Actuator stem
retracted
-
Fig.10:
Alignment of contact cam and cam holder
Actuator stem
extended
B
-
When actuator stem retracted
B
-
Fig.11:Alignment of the contact cam unit
When actuator stem extended
30 EB 8331-4 EN
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