Volth ARGO HYTOS SD3E2X-C2 S5 Series User manual
Operating instructions_SD3E2X-C2*S5(S6)_15327_1en_10/2023
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ARGO-HYTOS s.r.o.
Dělnická 1306, CZ 543 01 VRCHLABÍ
Operating instructions
2/2 SOLENOID OPERATED,
HYDRAULIC SCREW-IN POPPET-TYPE VALVE, PILOTED,
DESIGNED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES
SD3E2X-C2*S5(S6)
EN
The following is the authorised translation of original operating instruction SD3E2X-C2*S5(S6) no. 15327_1cz_08/2023,
issued by the manufacturer:
Important! Read the instructions before using the product.
Save the instructions for future reference.
If the operating instructions are lost, new ones can be found on the ARGO-HYTOS website www.argo-hytos.com
2S5
2S6
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Declaration of conformity
PROHLÁŠENÍ O SHODĚ
ARGO
-HYTOS
o
I
Typ I Type I Typ Cís/o I No. I N Vydán I lssued I Ausgestellt
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UK DECLARATION OF CONFORMITY
ARGO
-HYTOS
Dělnická 1306, 543 15 Vrchlabí, Czech Republic
o co, s
�
°°° °
D
1
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Related documents:
Ex-coil EX18 user manual (Original document B18 of the coil manufacturer, SCHIENLE)
Product datasheet: Screw-in Poppet-type valve SD3E2X-C2 (no. 5327)
Datasheet: General Technical Information GI (no. 0060)
Spare parts catalogue SP (no. 8010)
Datasheet: Tools for machining chambers for screw-in valves SMT (no. 0019)
Contents of operating instructions
Chapter Page
Declaration of conformity 2
Overview of signal words and warning signs used in the text 8
Overview of the symbols and signs used in the text 8
Glossary of technical terms used 8
1. Use of the product 8
2. Valve protection against intitiation of explosion in explosive atmosphere 9
2.1 Protection of electrical parts 9
2.2 Cable gland 10
2.3 Protection of non-electrical parts 10
2.4 Applicable legislation and standards 10
3. Risks and limitations of product use 10
3.1 Risks associated with operating in explosive atmospheres 10
3.2 Risks associated with the hydraulic part of the valve 11
3.3 Risks associated with the electrical part of the valve 11
4. Product description 12
4.1 Manual override 12
4.2 Materials used 12
4.3 Surface protection against corrosion 12
4.4 Basic technical parameters 13
4.5 Working fluid 13
4.6 Valve characteristics 13
4.7 Legislation and standards 14
5. Product modifications 14
6. Target group of users 14
7. Operating instructons broken down by product life stages 15
7.1 Transportation and storage of the product 15
7.2 Installation of the product 15
7.2.1 Electrical connection of coils 15
7.2.2 Connecting the valve to the hydraulic circuit 17
7.3 Commissioning 19
7.4 Normal operation 19
7.5 Extraordinary and emergency situations 19
7.6 Repairs carried out by specialist 20
7.6.1 Replacing a defective valve 20
7.6.2 Replacing the sealing rings at the base of the valve body 21
7.7 Product maintenance 21
7.8 Spare parts supplied 21
7.9 Product disposal 22
8. Manufacturer contact 22
1. Based on legislative requirements, all operators in the logistics chain, from the manufacturer of the certified Ex solenoid coil to the end user
of the complete equipement, are obliged to make and maintain traceability records of Ex products, enabling, if necessary, the withdrawal
of products of certain serial numbers from the market due to defects of non-conformities, endangering safety of use in an explosive
atmosphere. In practice, this means keeping records of the assignment of Ex coil/valve identification numbers to the identification numbers
of the operators immediately down the logistics chain.
2. To meet the requirement for traceability of Ex products, it is necessary to keep product type labels legible throughout their technical life.
Mandatory traceability
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The SD3E2X-C2*S5(S6) hydraulic valve is pilot operated poppet-type valve with the control stage controlled by a solenoid and the main stage
poppet controlled hydraulically. The valve is designed to be screwed into the C2 (VC12-2) shaped cavity with a 1-1/16-12 UN thread. The shape and
dimensions of the cavity for the C2 installation complies with the technical specification ISO/TR 17209. The product is designed for leakless control of
the working fluid flow in both directions (1→2, 2→1), i.e. for stopping, for example, the movement of the piston rod of a hydraulic cylinder or the
rotation of the output shaft of a hydraulic motor. The valve is available in two versions. In the basic position, when the solenoid is without electrical
supply, the valve is open and free flowing (connection 2S6) or closed (connection 2S5).
Valves with ATEX certification according to Directive 2014/34/EU and IECEx certification according to IECEx OD 009 and related harmonized
standards may be used in explosive atmospheres consisting of mine gas, gas or dust. The valves are marked with the CE Ex mark of conformity and
are accompanied by a Declaration of Conformity.
Use in explosive atmospheres:
Equipment - group I, mines, where the explosive atmosphere of firedamp consists predominantly methane.
The valve has a high level of safety (EPL = Mb), which makes initiation unlikely during the interval between gas discharge and valve shutdown.
It is designed for category M2 devices that remain off after gas discharge.
Equipment - group II, where the explosive atmosphere consists of gasses other than mine gas.
The valve has a high level of safety (EPL = Gb) which allows the valve to be used in zones 1 and 2. The valve must not be used in zone 0.
There is a risk of explosion. The valve is certified for gas groups IIA (typical gas is propane), IIB (typical gas is ethylene) also for hydrogen from group IIC.
The joint dimensions do not meet the requirements for Group IIC acetylene.
Equipment - group III, where the explosive atmosphere consists of dust and flammable flying particles.
The valve has a high level of safety (EPL = Db) which allows the valve to be used in zones 21 and 22. The valve must not be used in zone 20. There is
a risk of explosion. The valve is certified for all dust groups - IIIA (flammable flying particles), IIIB (non-conductive dust) and IIIC (conductive dust).
1. Use of product
An overview of signal words and warning signs used in the text
An overview of other symbols and abbreviations used in the text
Symbol, designation Description of the meaning of the symbol, designation
AC, DC Designation for alternating (AC) and direct (DC) current, voltage
ATEX Explosive Atmospheres
EPL Equipment Protection Level (see EN 60079.0)
IEC International Electrotechnical Commission
NBR Rubber used for the manufacture of seals
PA Polyamide
PE Polyethylene
PU Polyurethane
Glossary of technical terms used
›A hydraulic mechanism is one in which energy is transmitted via the pressure energy of the working fluid.
›A hydraulic directional control valve is a valve designed to control the direction of movement or stop the output component of an appliance.
›The pilot operated valve consists of two basic parts. The control stage is operated directly, e.g. by a solenoid. The main stage is
hydraulically controlled depending on the position of the control stage.
›The volumetric flow rate Q is the amount of liquid in volume units that flows through a given flow cross-section per time unit (SI unit is m3s-1,
in practice the unit l/min is used)
›The control solenoid is designed to reposition the valve spool that interconnects or closes the ports in the body. The solenoid consists of
an excitation coil which, by passing an electric current through the winding, generates a magnetic field which exerts a force on the armature of
the mechanical actuating system.
›Poppet-type valves damps the flow by inserting the poppet into the saite with very low volume losses compared to a spool valve.
›The screw-in valve is designed to be screwed into the shaped cavity in the hydraulic block. The valve body is replaced by a steel sleeve in
which the spool or poppet moves.
›Pressure is the force acting per area unit (SI unit Pascal (1 Pa = Nm-2), in practice the unit used is bar (1bar = 0.1 MPa)
DANGER Signal word combined with a warning sign used to signify that a dangerous situation which could result in
death or serious injury is imminent.
WARNING Signal word combined with a warning sign used to signify the occurrence of a potentially dangerous situation
that could result in death or serious injury if not avoided.
CAUTION Signal word combined with a warning sign used to signify a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
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Area of application
Equipment - group I – MINES Equipment - group II (IIG) - GAS Equipment - group III (IID) - DUST
Category M1– NO Zone 0 - NO Zone 20 - NO
Categorie M2
(the device remains
switched off)
Zone 1
Zone 2
IIA (propane) Zone 21
Zone 22
IIIA (flammable particles)
IIB (ethylene) + H2 (hydrogen) IIIB (non-conductive dust)
IIIC (conductive dust)
2. Valve protection against initiation of explosion of explosive atmosphere
2.1 Protection of electrical parts
The electrical part of the valve is an ATEX and IECEx certified solenoid coil.
The basic is the „d“ protection by flameproof enclosure (EN 60079-1, IEC 60079-1), which prevents the penetration of hot gases into the
surrounding explosive atmosphere in the event that an explosion is initiated inside the flameproof enclosure. For explosive atmospheres consisting of
dust, the enclosure „t“ (EN 60079-31, IEC 60079-31) is used. In addition, the coil is sealed with a potting compound.
Certification across standards NEC 500 and NEC 505, 506
NEC 500 (USA), Annex J (Kanada) NEC 505, 506 (USA) CEC Section 18 (Kanada)
Class I Division 1 Group B, C, D T6...T4 Cl 1 Zone 1, AEx db IIB+H2 T6...T4 Ex db IIB+H2 T6…T4 Gb
Class II/III Division 1 Group E, F, G T6...T4 Zone 21, AEx tb IIIC T85°C…T135°C Db Ex tb IIIC T85°C…T135°C Db
I M2 Ex db I Mb
II 2G Ex db IIB + H2 T6, T5, T4 Gb
II 2D Ex tb IIIC T85°C, T100°C, T135°C Db
Group Description Corresponds to EPL
Group B A typical gas is hydrogen Gb
Group C The typical gas is ethylene Gb
Group D Typical gases are methane and propane Gb
Group E Conductive dust Db
Group F Coal dust Db
Group G Non-conductive dust, grain dust Db
Class III Flammable airborne particles, paper or cotton processing Db
Certification ATEX, IECEx and UKCA
Use of the valve in potentially explosive atmospheres
Certification Number Issued Certification body
EU-Type Examination Certificate FM23ATEX0008X 13.6.2023 FM Approvals Europe Ltd. (Notified body No. 6024)
One Georges Quay Plaza, Dublin, Ireland D02 E440
IECEx Certificate of Conformity IECEx FMG 23.0003X 12.6.2023 FM Approvals LLC
1151 Boston-Providence Turnpike, Norwood, MA 02062, USA
UK-Type Examination Certificate FM23UKEX0010X 16.6.2023 FM Approvals Ltd. (Approved body No. 1725)
Voyager Place, Maidenhead, Berkshire, SL6 2PJ, UK
Certificate Number Issued Certification body
Certificate of Conformity FM23US0009X 12.6.2023 FM Approvals LLC
1151 Boston-Providence Turnpike, Norwood, MA 02062, USA
Certificate of Conformity FM23CA0005X 12.6.2023 FM Approvals LLC
1151 Boston-Providence Turnpike, Norwood, MA 02062, USA
The valves are available in three surface temperature classes:
T4 with a maximum surface temperature of 135 °C
T5 with a maximum surface temperature of 100 °C
T6 with a maximum surface temperature of 85 °C
The use of the valve in the temperature class is subject to the maximum supply voltage of the coil not being exceeded, the working
fluid temperature and the ambient temperature not being exceeded (see Table 4.4 Basic technical parameters).
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3. Risks and limitations of product use
3.1 Risks associated with operating in explosive atmospheres
DANGER
Explosive atmosphere type and zone
The valve must not be used outside the specified range (see paragraph 1Product use ), in particular it is not
intended for equipment category M1group l (mines) zone 0 group II (gases) and zone 20 group III (dust).
Risk of explosion.
DANGER
Surface temperature
When selecting the valve, the surface temperature requirement of the valve must be taken into account.
It must be min. 25 °C lower than the temperature necessary to initiate an explosion of an explosive
atmosphere of a given composition. If the initiation temperature is exceeded an explosion will occur.
DANGER
Handling in an explosive atmosphere
It is forbidden to install, disassemble, repair or replace the valve in an exlosive atmosphere.
Risk of explosion.
2.3 Protection of non-electrical parts
The non-electrical part of the valve consists of the hydraulic part and the solenoid actuating system.
The safety of the non-electrical parts has been ensured and assessed according to ISO 80079-36 and ISO 80079-37 and EN ISO/IEC 80079-38.
› The moving parts, the spool / poppet, armature and pin of the actuating system, perform a sliding motion in a space separated by a seal from the
surrounding environment and flooded with working fluid.
› Not exceeding the maximum surface temperature of the given temperature class is conditioned by not exceeding the maximum temperature
of the working fluid (70 °C), the maximum ambient temperature (see table 4.4 Basic technical parameters) and the nominal voltage of the coil.
› The valve body and coil body are of robust construction, sufficiently resistant to destruction by mechanical shock.
(Valve body impact resistance test performed according to EN IEC 60079-0 paragraph 26.4.2: two impacts with a weight with a hardened head of
diameter D25 mm, weighing m = 1 kg, falling from a height of 0.7 m, with a total potential energy of 7 J)
› The hydraulic section has sufficient compressive strength, tested at 1.5 times the maximum operating pressure of the fluid.
› The surface of the valve is grounded using a grounding screw and protected against static electricity discharge.
› The construction materials used meet the requirements for limited content of certain elements to prevent the formation of electrical cells and
excessive corrosion.
› The surface materials used do not produce sparks during mechanical impacts.
› The sliding rod of the manual override N7 is protected by a sealing sleeve against the ingress of contaminating particles, especially hard particles,
which could create an initiating spark.
2.2 Cable gland
The cable gland is a separately certified ex-component. A gland with certified type protection „d“ must be used to prevent hot gases from escaping
and initiating an explosion in the surrounding environment in the event of an explosion in the interior of the coil casing. (The gland is not included
with the valve.)
I M2 Ex db I Mb
II 2G Ex db IIC Gb
II 2D Ex tb IIIC Db
Non-electrical parts
of valve
I M2 Ex h I Mb
II 2G Ex h IIC T6, T5, T4 Gb
II 2D Ex h IIIC T85°C, T100°C, T135°C Db
2.4 Applicable legislation and standards
The valve complies with the relevant requirements of legislation and standards:
Směrnice 2014/34/EU (harmonizované NV ČR 116/2016) Zařízení pro prostředí s nebezpečím výbuchu (ATEX)
IECEx OD 009 Operational Document
The following standards were used to assess the conformity of the electrical part:
CENELEC EN IEC 60079-0
Explosive atmospheres – Part 0: Equipment – General requirements
EN 60079-1, IEC 60079-1
Explosive atmospheres – Part 1: Equipment protection by flameproof enclosure „d“
EN 60079-31, IEC 60079-31
Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure „t“
The following standards were used to assess the conformity of the non-electrical part:
EN 1127-1
Explosive atmospheres – Explosion prevention and protection – Part 1: Basic concepts and methodology
ISO 80079-36
Explosive atmospheres – Part 36: Non-electrical equipment for explosive atmospheres – Basic method and requirement
ISO 80079-37
Explosive atmospheres – Part 37: Non-electrical equipment for explosive atmospheres – Non-electrical type of protection constructional safety „c“,
control of ignition sources „b“. liquid immersion „k“
EN ISO/IEC 80079-38
Explosive atmospheres – Part 38: Equipment and components in explosive atmospheres in underground mines
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DANGER
Maximum operating pressure
The SD3E2X-C2*S5(S6) valve for a maximum working fluid pressure of 350 bar. If the maximum pressure is
exceeded, the valve may be damaged and the valve may rupture if the pressure rating is exceeded.
DANGER
Maximum hydraulic output
In section 4.6 of the datasheet for the operating limits. The hydraulic performance is provided as the product of
the working pressure and the flow rate. If the instantaneous power exceeds the curve limit, the valve poppet
will not be switched over and control of the appliance will be lost.
WARNING
Installation of the valve
The valve may only be installed in the corresponding chamber. The seals must not be damaged. The valve must
be tightened to the specified tightening torque of 35+5 Nm. Otherwise, there is a risk of leakage of the
working fluid and pressure release of the valve. (For details see paragraph 7.2 Product installation)
WARNING
Purity of the working fluid
Indirectly controlled poppet valves are sensitive to contamination of the working fluid because the control
contains nozzles of small diameter. If the nozzle becomes clogged, the valve function will be lost and thus the
control of the appliance will be lost. The recommended maximum contamination of the working fluid is
19/16/13 ISO 4406.
3.2 Risk associated with the hydraulic part of the valve
DANGER
Electrical shock
The solenoid coil is an electrical device that should be connected by a person with appropriate electrical
qualifications. Before connecting the solenoid, check the parameters of the power supply, the integrity of the
cable and the solenoid. There is a risk of electric shock.
CAUTION
Electrical supply values
The solenoid coil is energised by the electrical current passing through the winding. The values of the electrical
supply must not exceed the values indicated on the coil. There is a risk of losing solenoid function.
3.3 Risks associated with the electrical part of the valve
CAUTION
Maximum operating temperature
The maximum operating temperature must not exceed the temperature range allowed in paragraph 4.4 Basic
technical parameters or in the datasheet. Both the temperature of the operating fluid and the ambient tempera-
ture significantly influence:
a) the surface temperature of the valve
b) the temperature of the solenoid coil winding - there is a risk of a reduction in hydraulic performance
c) the seal material - risk of seal damage and leakage of the working fluid.
CAUTION
Surface temperature of the valve
The surface temperature of the valve can exceed 100 °C due to the temperature of the working fluid and pressure
loss in the valve being converted to heat. Do not touch the surface of the valve when the circuit is operational,
even after switching off. Wait until it has cooled down to a safe temperature. There is a risk of burns.
CAUTION
Working fluids used
Valves may only be used for normal working fluids, especially hydraulic oils (see chapter 4. Product description).
It is forbidden to use the following as working fluids, in particular:
› water and aquesous solutions that will cause corrosion and loss of valve function
› liquids which are flammable or explosive, the heating of which may cause fire or explosion when
passing through the valve
› aggresive liquids (e.g. acids and hydroxides) which will cause damage to the valve and loss of function.
The flash point of the used working fluid must be at least 50 K higher than the maximum allowed of surface
temperature of the valve in the given temperature class.
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The manual override of the poppet position, built into the rear of the solenoid control system, is used to reposition the poppet in the event of loss of
solenoid function or loss of electrical supply to the solenoid coils to achieve the safe position of the controlled mechanism.
The use of the manual override is limited by the maximum pressure of 25 bar in the actuating system.
CAUTION
Use of the manual override is forbidden when the valve solenoids are operational.
If the valve is operated by solenoids do not use the manual override.
Valve damage and loss of function may result.
4.1 Manual override dimensions in mm (in)
Without designation
- standard, for 2S6 only N7
- with detent assembly, for 2S6 only N9
- without manual override (2S5, 2S6)
The hydraulic part of the valve consists of a steel housing (A) with radial inlets of channel 2 and axial outlets of channel 1. A hardened poppet moves
inside the seat and is held in its working position by a return spring. The poppet is repositioned by fluid pressure after opening / closing the control
stage, operated by an explosion-proof certified solenoid (B). The solenoid coil is fixed to the control system by a hexagonal nut (C).
The thread adapter (D) with an optional thread is used to connect the power cable, e.g. using a suitable cable gland.
4. Product description
A
B
C
D
74 (2.91)
30 (1.18)
76 (2.99)
134 (5.28)
3
2
1
21
TWIST
PUSH
74 (2.91)
4.2 Materials used
The valve surface is zinc-couted with 520 h corrosion protection in NSS according to ISO 9227. Surface layer without hexavalent chronium Cr+6.
4.3 Surface protection against corrosion
Poppet - hardened steel
Compression spring - patented steel wire for the production of springs
Valve housing - steel
Valve seal – NBR, Polyurethane
Pole piece, tube, and armature of actuating system - low carbon steel
Non-magnetic ring and pin of actuating system – Cr-Ni stainless steel
End plug of actuating system – brass
Coil core – stainless steel
Coil winding - enamelled copper wire
Coil housing, thread adapter, stopping plug and coil hexagonal nut - low carbon steel
Coil sealing on actuating system – silicone rubber
The materials used are not included in the lists of prohibited and mandatory documented substances Directive 2015/863/EU (RoHS) and EU
Regulation 1907/2006 (REACH).
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Parameter Unit Value
Valve connection thread 1-1/16-12 UN / C2 (VC12-2)
Maximum pressure bar (PSI) 350 (5076)
Maximum flow l/min (GPM) 150 (39.6)
Pressure losses as a function of flow rate bar (PSI) graph ∆p = f (Q)
Fluid temperature °C (°F) -30 … + 70 (-22 … +158)
Max. switching frequency 1/h 7 000
Working fluid kinematic viscosity range mm2s-1 10 to 400
Minimum required working fluid purity class 19/16/13 ISO 4406
Lifetime cycles 107
Weight of valve with solenoid kg (lbs) 1.89 (4.17)
Technical data of the solenoid with certification for explosive environments
Voltage type AC 50 / 60 Hz DC
Nominal supply voltage (UN) V 110, 230 12, 24, 48, 110
Supply voltage fluctuations ± 10 % UN
Supply coil input power W 10
Duty cycle 100 % ED
Electrical protection IP according to EN 60529 IP66 / IP68*
Ambient temperature range for each surface temperature class T4, T5, T6
Temperature class Nominal coil input power Ambient temperature range
T4 – 135 °C
10 W °C (°F)
-30 … +70 (-22 ... 158)
T5 – 100 °C -30 … +55 (-22 ... 131)
T6 – 85 °C -30 … +40 (-22 ... 104)
*Test procedure IP68: Pressure 1 m under water, test duration 24 h. The indicated IP protection level is only achieved if the cable is properly mounted.
4.4 Basic technical parameters
The valve is designed for common hydraulic working fluids:
› mineral oils of performance classes HM and HV according to ISO 6734-4
› non-flammable and difficult to ignite hydraulic fluids according to ISO 12922
› environmentally acceptable hydraulic fluids according to ISO 15380
NOTICE:
NBR and Polyurethane seal material is not suitable for some working fluid groups, such as the HFD group.
In case of uncertainty, we recommend to perform a test of the mutual tolerance of the seal material and the working fluid.
4.5 Working fluid
Characteristics measured at = 32 mm2/s (156 SUS)
4.6 Valve characteristics
Ambient temp. 70 °C (158 °F), napětí UN-10 % (24 V DC), výkon PN10 W
Operating limits (p-Q) Pressure drop as a function of flow rate (∆p-Q)
Valve SD3E2X-C2*S5(S6)
(1450)
(2176)
(725)
(4351)
(5076)
(2901)
(3626)
100
150
50
300
350
200
250
050 100 150
25 75 125
(13.2) (26.4) (39.6)(6.6) (19.8) (33.0)
Operating pressure p [bar (PSI)]
Flow Q [l/min (GPM)]
Flow Q [l/min (GPM)]
Pressure drop ∆p [bar (PSI)]
Connection Direction
1 2S5 1→2, 2→1
1 2S6 1→2, 2→1
Connection Direction Solenoid
1 2S5 1→2, 2→1 ON
1 2S6 1→2, 2→1 OFF
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The valve complies with the relevant requirements of legislation and standards as amended:
ČSN EN ISO 4413 Hydraulics - General rules and safety requirements for hydraulic systems and their components
Other regulations and standards used:
ČSN ISO 6403 Hydrostatic drives. Valves for flow and pressure control. Test methods
ČSN ISO 4411 Measurement of the characteristics Δp = function (Q) of hydraulic valves
ČSN EN ISO 9001 Quality management systems
ČSN EN ISO 12100 Machine safety / risk analysis
Directive 2006/42/EU on machinery / used chapters: 1.7.4 Instructions for use, Annex III CE marking
ČSN EN 82079-1 Preparation of instruction manuals - Structure, content and presentation / Part 1: General principles and detailed requirements
4.7 Legislation and standards
An overview of possible valve modifications is described in the ordering code.
The valve connection, the type of manual override and the electrical parameters of the coil cannot be subsequently changed by the user. In the case of
a valve with a 10 W coil, the coil surface temperature and the application for the temperature class can be affected by adjusting the ambient
temperature (see 4.4 Ambient temperature range for each class).
5. Product modification
Ordering Code
M
NPT
2S5
2S6
01200
02400
04800
11000
11050
23050
SD3E2X - C2 / H / A6 - B
normally closed (NC),
blocking
normally open (NO),
blocking
Explosion proof 2/2 directional
valve, solenoid operated, poppet
type, piloted
Model / Symbol
Model
High performance
Valve cavity
1-1/16-12 UN (VC12-2)
Nominal supply voltage
DC voltage (INof coil 10 W)
12 V DC / 0.75 A
24 V DC / 0.39 A
48 V DC / 0.19 A
110 V DC / 0.086 A
AC voltage 50/60 Hz (IN)
110 V AC / 0.084 A
230 V AC / 0.046 A
No designation
Sealing material
NBR, Polyurethane
Surface treatment
zinc-coated (ZnNi), ISO 9227 (520 h)
Manual override
standard for 2S6 only
detent assembly for 2S6 only
without manual override
No designation
N7
N9
Certifications of valve
ATEX, IECEx, UKCA,
FM APPROVED
Threaded adapter with thread
M20x1.5
½ NPT ANSI
No designation
Temperature class - solenoid nominal power
Třída T4, T5, T6 - 10 W
All of the above activities related to this valve, in particular installation and connection to the hydraulic circuit, require specialist technical knowledge
and experience in the field of hydraulics. The minimum level of competence required is CETOP level 2. This level is generally defined as performing a
variety of activities that require an understanding of technical factors and contexts. This may lead to the need for correct interpretation (e.g.
tolerances, operating methods) or the application of various non-repetitive procedures. This may require the performance of checks, simple analysis
and diagnostics, and the ability to react to changes in an operational manner. Teamwork is often necessary.
The connection of solenoid coils to the supply voltage must only be carried out by persons with the appropriate electrical qualifications.
All operations must be carried out with responsibility for correctness and quality, as this is a dangerous area of product use.
It is forbidden for the following persons to carry out any activities related to this product:
› minors (the exception is practical training of pupils under the professional supervision of a teacher)
› without established professional competence
› under the influence of alcohol and/or drugs
› patients whose medical condition could affect safety (reduced attention and ability to react in time, excessive fatigue)
› under the influence of drugs that have a demonstrable effect on attention and timeliness
› allergic to hydraulic working fluids
6. Target group of users
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The valve is packaged in vacuum shrink-wrapped PE foil and protected against moisture and dust as standard. An identification label is affixed to the
packaging.The products should only be stored for the necessary time at a temperature of 0 to +30 °C in a dry place with a relative humidity of up to 65 %.
After extended periods of storage, we recommend checking the product for corrosion damage, replacing seal at the base of the body and flushing
the product with clean oil before connecting it to the hydraulic circuit.
Check that the valve type on the identification plate is correct.
Cut the packaging with scissors and carefully remove the valve from the packaging.
Unpack the valve in a clean place and prevent contamination of the valve.
The packaging is made of PE and can be easily contaminated with residual hydraulic oil from the valve.
Dispose of the packaging in accordance with applicable environmental regulations.
The mounting position of the valve is arbitrary. However, if vibrations or shocks are applied to the valve during operation, they must not be applied in
the direction of the spool axis.
7. Operating instructons broken down by product life stages
7.1 Transportation and storage of the product
7.2 Installation of the product
CAUTION
Slippery valve surface
The valve contains a small amount of residual oil after a hydraulic function test carried out by the manufacturer.
If the surface of the unpacked valve is contaminated with oil, remove the oil using a cleaning cloth. A slippery
valve surface can cause the valve to fall during handling and cause minor injury or damage to the valve.
7.2.1 Electrical connection of coils
When connecting the coil power cable, proceed as follows:
› Use a “d” certified cable to connect the coils to the power supply. When selecting the cable structure and outer diameter, follow the
manufacturer’s recommendations for the certified cable gland used. (The cable gland is not included with the valve.)
› Use a cable and cable gland with sufficient insulation temperature rating. For a 10 W coil, the insulation temperature class must be 35 °C
higher than the maximum allowable ambient temperature for that temperature class.
› The cable should be sufficiently protected against damage with respect to environmental conditions, e.g. resistant to mechanical damage or
chemical attack.
› The design of the coil casing allows the connection of the power cable from the vertical or horizontal direction depending on which hole in the casing
the thread adapter with external thread M36x1 is screwed into.
› Thread adapter with M20x1.5 female thread or with ½ NPT ANSI tapered female thread can be selected.
› The second hole in the casing is closed with a plug after the wires are mounted to the coil terminal.
› The thread adapter and plug are sealed in the casing with a VQM silicone rubber O-ring.
› The thread adapter and closing plug are protected against loosening after assembly by screwing in the M3x4 grub screws in the radial direction.
WARNING
Sealing ring
During assembly, the ring must not be damaged or the part must not be mounted without the sealing ring.
There is a risk of explosion.
1. Stopping plug
with M36x1 thread and sealing ring
2. Thread adapter
with thread M36x1 and sealing ring
- A. Internal thread M20x1.5
- B. ANSI ½ NPT tapered female thread
3. Grub screws
M3x4
Temperature class Max. ambient temperature Min. temperature insulation class
T4 70 °C (158 °F) 105 °C (221 °F)
T5 55 °C (131 °F) 90 °C (194 °F)
T6 40 °C (104 °F) 75 °C (167 °F)
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› The user must protect the electrical circuit of the solenoid with a fuse with a tripping characteristic corresponding to the slow fuse wire
blowing. The fuse tripping current shall be IN≤ 3x IG, where IGis the current flowing through the solenoid coil at the maximum coil
temperature. (For IGvalues, see the coil electrical parameter table.) Conductors and elements shall be used for the fuse circuit that are
rated for a higher electric current than the maximum short-circuit current in the customer‘s equipment circuit.
› If elements of the electrical installation, including the fuse, are also located in a potentially explosive atmosphere, these elements must also have
the appropriate degree of protection.
Electrical wiring diagram of coils
Coils with DC power supply and surge protection by bipolar diode Coils with AC power supply and rectifier
UZ= 36 V for UN= 12 V DC a 24 V DC
UZ= 75 V for UN= 48 V
UZ= 180 V for UN= 110 V DC
12
12
Ground wire
Coil power supply
When connecting the coil power cable, proceed as follows:
› Using the inbus wrench A/F 10, loosen and unscrew the steel plug on the top surface of the coil housing to gain access to the terminal block inside
the housing. Do not damage the plug seal.
› Disassemble the cable gland into its individual parts. Strip the end of the cable and thread the cable successively through all parts of the gland, the
thread adapter and the horizontal or vertical hole in the coil casing (depending on the direction of cable feed).
› Strip the ends of the wires and plug them into the terminal block (see picture below).
› Screw the thread adapter into the coil casing and tighten it to a torque of 30±5 Nm using a wrench A/F 27.
› Screw the part of the cable gland to be screwed into the thread adapter and tighten to the torque specified by the manufacturer.
› Assemble the cable gland according to the manufacturer’s instructions so that the cable is sufficiently secured against pulling out by external force
and displacement by gases in the event of an explosion in the inner space of the coil casing. The inner space of the coil casing must be sufficiently
sealed.
› Fit a steel plug with seal into the free hole in the coil casing and tighten it to the specified torque of 30±5 Nm using an inbus wrench A/F 10.
Secure the position of the thread adapter and the steel plug against loosening with M3x4 grub screws and tighten them to a torque of 0.4±0.1
Nm using an inbus wrench A/F 1.5 mm.
› After mounting the valve, the surface of the coil must be grounded by connecting the ground wire to the terminal on the top surface of the coil
casing using an M5x10 screw. Tighten the screw to a tightening torque of 2.2±0.2 Nm using an 8 mm wide screwdriver.
Connecting the wires to the terminal block:
› Remove the insulation from the end of the cable so that when the cable is fixed in the cable gland, the insulated part of the cable sufficiently
extends into the inner space of the terminal block.
› Strip the ends of the wires to a length of 5 to 6 mm.
Release the clamp by pressing the lever against the spring in the direction of the arrow and insert a wire with a cross section of 0.5 to 1.5 mm2.
Releasing the lever secures the wire. The right clamp is for the earth wire.
› Make sure that the conductors are sufficiently secured in the clamps and are not in danger of loosening.
Power fuse protection
DANGER
Correct electrical connection of coils
Pay attention to the correct fixing of the wires in the terminal box, the correct fixing and sealing
of the thread adapter, the steel stopping plug and the cable in the cable gland. There is a risk of explosion.
DANGER
Coil surface grounding
If the surface of the coil and thus the entire valve is not grounded, an electrical discharge of static electricity
may occur.
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min. for side
channel
AXIALBORE
min. for side
channel
space for the radial
bore
The valve is designed to be screwed into a shaped cavity in a block with a connection thread.
The chamber shapes and dimensions conform to the technical specification ISO/TR 17209.
7.2.2 Connecting the valve to the hydraulic circuit
Cavity C2
space for the radial
bore
Table of coil electrical parameters
Coil type with DC
electric power supply
Nominal supply
voltage
Winding resistance
at t = 20 °C
Nominal current Limit current Bipolar diode Nominal input
power
UN[V DC] R20 [Ω] IN[A] IG[A] UZ[V] PN[W]
EX18-001-D-1-A-012-0 IDXa 12 16.1 0.750 0.700 36 8.9
EX18-001-D-1-A-024-0 IDXi 24 61.2 0.390 0.360 36 9.3
EX18-001-D-1-A-048-0 IDXa 48 254.0 0.190 0.177 75 9.1
EX18-001-D-1-A-110-0 IDXa 110 1277.0 0.086 0.080 180 9.6
Coil type with AC electric power
supply (f=50/60 Hz)
Nominal supply
voltage
Winding resistance
at t = 20 °C
Nominal current Limit current Rectifier Nominal input
power
UN[V AC] R20 [Ω] IN[A] IG[A] UZ[V] PN[W]
EX18-001-A-1-A-110-0 IDXi 110 1172 0,084 0,079 ano 10,0
EX18-001-A-1-A-230-0 IDXa 230 4490 0,046 0,043 ano 9,5
Coil description note: Nominal input power of coil EX18-001 is 10 W, nominal input power of coil EX18-002 is 18 W.
Valve designation Connection thread Chamber designation ARGO-HYTOS Chamber designation HYDRAFORCE
SD3EX-C2*S5(S6) 1-1/16-12 UN C2 VC12-2
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Dimensions of screw-in poppet valve
Dimensions in mm (in)
Note:
Associated tools for production of ports can be ordered from the valve manufacturer (SMT catalogue 0019).Drawings of the ports are also available in
the same catalogue.
Unscrew the coil nut (5) by turning it counterclockwise. Remove the coil seal ring (4) and coil (6) from the actuating system. The valve (1) is mounted in
the cavity without the coil to prevent the valve from tightening in the cavity. Before inserting the valve into the cavity in the block, ensure that
undamaged seals are fitted to the valve housing. Also verify that the valve and cavity surfaces are not damaged or contaminated. Before installing the
valve, we recommend lightly lubricating the housing seals with grease or working fluid. Using slight pressure, carefully insert the valve into the cavity and
turn it clockwise to screw it in by hand. Then tighten the valve to 35+5 Nm using a torque wrench A/F 27. Place the coil (3), coil seal (4) and fixing nut (5)
back on the valve actuating system. Orient the coil by turning it on the actuating system so that the cable outlet points in the required direction and
secure the position of the coil by tightening the nut clockwise with a torque wrench A/F 32 to 5+1 Nm.
SD3E2X-C2*S5(S6)
135+5 Nm
(25.8+3.7 lbf.ft)
27
5±1 Nm
(3.7±0.7 lbf.ft)
32
5
4
32
129 (5.08)
16 (0.63)58 (2.28)
84 (3.31)
22,17 (0.87)
1-1/16-12 UNF-2A
45 (1.77)
27
1
2
66,5 (2.61)
23 (0.91)
46 (1.81)
HEX 32
HEX 27
(95 (3.74))
93 (3.66)
M36x1
25(0.98)
15,5 (0.61)
M20x1,5
1/2-14 NPT
10
30±5 Nm
(22.1±3.7 lbf.ft)
5±1 Nm
(3.7±0.7 lbf.ft) 35+5 Nm
(25.8+3.7 lbf.ft)
Grounding screw
M5x10
2,2±0,2 Nm
(1.6±0.2 lbf.ft)
30±5 Nm
(22.1±3.7 lbf.ft)
Stopping plug interchangeable
with the thread adapter
Thread adapter is not mounted
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Before commissioning the hydraulic ciruit, check that the valve is correctly mounted on the cavity and that electrical supply cables are correctly
connected. The valve is not to be adjusted. Test operation should be conducted without the pressence of an explosive atmosphere.
After the hydraulic circuit has been commissioned, check the valve for leaks. Simply verify the valve, repositioning the poppet by alternately switching
the solenoids and monitoring the movement of the appliance or the amount of pressure in the appliance branches.
During normal operation, the valve poppet is adjusted by the solenoids. Normal operation of the system does not require any manipulation of the valve.
CAUTION
Coil cooling
Coil cooling takes into account the cooling surface of the hydraulic part of the valve.
Do not power separately disassembled coils. Excessive winding heat, insulation damage and short circuiting
between coils may occur. For the same reason, the surface of the coils must not be covered, exposed to direct
heat sources or sunlight. The valve must not be closed in a tight space without ensuring air circulation.
7.3 Commissioning
7.4 Normal operation
DO NOT EXCEED THE MAXIMUM PARAMETERS, shown in table 4.4.
OBSERVE THE OPERATIONAL RESTRICTIONS AND AVOID THE RISKS, referred to in paragraph 3.
USE PROTECTIVE EQUIPMENT
When working with hydraulic fluid, it is recommended to wear safety goggles, protective rubber gloves and sturdy shoes with non-slip soles.
The solenoid windings heat up during operation. Effective external cooling must be provided to ensure that the maximum winding temperature is not
exceeded, by not exceeding the maximum fluid and ambient temperature and by maintaining minimum volume of the connection block. A valve
body volume of (225 cm3) is sufficient for one manifold. If several valves that can be switched simultaneously are connected on the connection plate,
a distance of at least 55 mm must be maintained between the bodies of adjacent valves (see fig).
55 (2.17) 55 (2.17)
CAUTION
Correct installation of the valve
A missing or damaged ring after the thread will cause a leak of working fluid. Missing or damaged rings on
the valve body will cause internal volume loss and unreliable valve operation.
In the event of a power failure to the solenoids or a coil failure, the centering spring will return the valve poppet to its base position.
Based on the results of the risk analysis, the following potential faults have been identified:
› External valve leakage due to seal damage associated with a working fluid leak.
› Loss of valve function, resulting in loss of control of the appliance.
› Mechanical damage to the electrical part of the valve including the cable.
7.5 Extraordinary and emergency situations
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A suitably qualified user is authorised to replace the complete valve, the seals on the valve chamber which are supplied as a kit.
7.6 Repairs carried out by specialist
ENVIRONMENTAL PROTECTION
Spilled working fluid must be removed immediately, e.g. with suitable absorbents, contaminated parts of the perimeter cleaned,
contaminated objects in the vicinity cleaned or disposed of. Contaminated objects and residues of leaked working fluid must be
disposed of in accordance with the applicable environmental regulations.
FIRST AID
Electric shock
› Switch off the power supply immediately
› Make sure the casualty is breathing.
› Call emergency medical services
› If the casualty is not breathing, initiate measures to restore basic life functions according to first aid abilities (CPR, artificial
respiration) and equip the workplace (defibrillator) with life-saving equipment.
Contamination by hydraulic working fluid
If contamination of persons occurs, contaminated parts of clothing must be removed immediately and the skin thoroughly washed
with soap or treated with a suitable cream.
If the eyes are contaminated, flush them with clean water and seek medical attention. Seek medical attention also in case of
accidental ingestion of working fluid or skin allergic reaction to splashes of working fluid.
7.6.1 Replacing a defective valve
A defective valve must be removed and replaced with a new one.
Repairs to a defective valve may only be carried out by the manufacturer.
When replacing the defective valve with a new one, proceed as follows:
› Ensure that no explosive atmosphere is present during the repair period. (see also 7.5).
› Switch off the pressure source (pump) of the hydraulic circuit (see also 7.5).
› Relieve the hydraulic circuit including the accumulators by connecting it to the tank (see also 7.5).
› Ensure that the hydraulic circuit is pressure-free (see also 7.5).
› Switch off the electrical supply to the directional control valve solenoids (see also 7.5).
› Ensure that the surface of the valve and solenoid coils is cooled to a low enough temperature to prevent skin burns (see also 7.5).
› Clean the surface and area around the valve.
› Remove the coil surface ground wire by loosening the M5x10 ground screw.
› Disconnect the electrical supply cable to the coils (see 7.6.3).
› Loosen the coil nut with a wrench A/F 32 and unscrew it.
› Remove the sealing ring and coil from the valve actuating system.
› Loosen the valve with a wrench A/F 27 and carefully unscrew it.
› Allow the remaining working fluid from the valve to drain into the smaller container provided.
› When installing the new replacement valve, follow the procedure in section 7.2 Product installation
Remove residual working fluid from the dismantled defective valve and package it to prevent mechanical damage and contamination of the area outside
the package during transport. Send the packaged valve with a description of the manifestation of the defect to the manufacturer. A new valve is
warranted by the manufacturer for 1 year. However, a claim may not be accepted by the manufacturer if the valve is mechanically damaged, the seal
material is damaged by aggressive liquid, or the valve has been shown to have been used improperly and not in accordance with these instruction of use.
Defective valves must be replaced/repaired.
DANGER
Shutdown of electrical power, pressure source and circuit relief
In the event of an emergency, immediately shut off the electrical power supply to the control solenoids and
the pressure source (pump). Relieve all parts of the hydraulic circuit including the hydraulic accumulators by
connecting them to the tank. A malfunctioning valve may cause a dangerous operating situation due to loss
of control. A damaged electrical part can initiate an explosion.
DANGER
Prohibition of handling and repair in explosive atmospheres
A defective valve must not be repaired or dismantled when an explosive atmosphere is present.
There is a risk of initiating an explosion.
CAUTION
Check pressure relief part of the circuit
Always ensure that the circuit is depressurised before intervening in the hydraulic circuit, for example before
removing a valve. Otherwise there is a risk of leakage of working fluid and contamination of persons.
CAUTION
Surface temperature
Before starting disassembly, make sure that the surface of the valve and solenoid coils has cooled to a low
enough temperature to prevent skin burns.
This manual suits for next models
1
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