EPS 18 ATEX 1232 X, IECEx EPS 18.0110X
Solenoid coil Type AC10
Magnetspule Typ AC10
Bobine magnétique Type AC10

Device with II 2G/D Ex approval
Geräte mit II 2G/D Ex Zulassung
Appareils avec mode de protection II 2G/D Ex

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2014 - 2023
Operating Instructions 2310/03_EU-ML_00815313 / Original DE

AC10, II 2G/D Ex
Contents﻿
1

OPERATING INSTRUCTION.................................................. 4
1.1 Definition of terms........................................................ 4
1.2 Symbols........................................................................ 4

8

ACCESSORIES.................................................................... 14
8.1 Cable gland for terminal box...................................... 14
8.2 External grounding connection for terminal box........ 15

2

AUTHORISED USE................................................................ 5
2.1 Explosion protection approval...................................... 5

93BASIC SAFETY INSTRUCTIONS........................................... 6

INSTALLATION AND REMOVAL.......................................... 15
9.1 Installation.................................................................. 16
9.2 Electrical connection.................................................. 16
9.3 Removal..................................................................... 18

4

GENERAL INFORMATION..................................................... 7
4.1 Contact addresses....................................................... 7
4.2 Warranty....................................................................... 7
4.3 Information on the internet........................................... 7

5

PRODUCT DESCRIPTION..................................................... 8
5.1 Design.......................................................................... 8
5.2 Solenoid coil with cable outlet..................................... 9
5.3 Solenoid coil with terminal box.................................... 9

6

APPLICATION CONDITIONS OF THE DEVICES................. 10
6.1 Special conditions...................................................... 10
6.2 Operating conditions.................................................. 10
6.3 Operating temperature range..................................... 10

7

TECHNICAL DATA................................................................ 11
7.1 Safety instructions...................................................... 11
7.2 Standards and directives............................................ 11
7.3 Type label for potentially explosive atmosphere............ 11
7.4 Electrical data............................................................. 13

10 START-UP............................................................................. 18
11 MAINTENANCE, REPAIR, TROUBLESHOOTING............... 19
11.1 Maintenance work...................................................... 19
11.2 Repair......................................................................... 19
11.3 Troubleshooting.......................................................... 19
12 TRANSPORTATION, STORAGE, DISPOSAL....................... 19

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AC10, II 2G/D Ex
Operating Instruction

1

OPERATING INSTRUCTION

The operating instructions describe the entire life cycle of the device.
Keep these instructions in a location which is easily accessible
to every user and make these instructions available to every newowner of the device.
Operating instruction contain important information.
▶ Read the operating instructions carefully and follow thesafety instructions in particular.
▶ Operating instructions must be available to each user.
▶ The liability and warranty for the device are void if the operating
instructions are not followed.

1.1

Definition of terms

In these instructions, the term “device” always refers to the solenoid
coil AC10.
In these instructions, the abbreviation “Ex” always refers
to “potentially explosive”.

1.2

Symbols
DANGER!

Warns of an immediate danger.
▶ Failure to observe the warning may result in a fatal or serious injury.
WARNING!
Warns of a potentially dangerous situation.
▶ Failure to observe the warning may result in serious injuries ordeath.
CAUTION!
Warns of a possible danger.
▶ Failure to observe this warning may result in a moderate or minor
injury.
NOTE!
Warns of damage to property.
Important tips and recommendations.
Refers to information in these operating instructions or inother documentation.
▶ designates an instruction to prevent risks.

→ designates a procedure which you must carry out.
4

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Authorised use

2

AUTHORISED USE

Unauthorized use of the solenoid coil AC10 may be dangerous
to people, nearby equipment and the environment.
The solenoid coil AC10 is used to activate valves which
control the gaseous or liquid media.
▶ A valve controlled by the solenoid coil AC10 may be used solely
for the media specified in the data sheet and for use in explosion
group IIC category 2G and/or explosion group IIIC category 2G,
and temperature class T4, T5 or T6 (refer to the specifications
on the type label for potentially explosive atmosphere).
▶ The solenoid coil may be used only for the applications designated in chapter “6 Application conditions of the devices”
and in conjunction with third-party devices and components
recommended and authorized by Bürkert.
▶ The type of protection is encapsulation Ex “m” for coils withcable connection.
▶ The type of protection for the optionally mounted terminal box
is “e” for gas and “t” for dust.
▶ The faultless and reliable operation of the system assumes correct transportation, correct storage and installation as well as
careful operation and maintenance. Any other use is regarded
as unauthorized. Bürkert is not liable for any resulting damage.
The user alone bears the risk.
▶ Only use the device for its intended purpose.

2.1

Explosion protection approval

The explosion protection approval is only valid if you use themodules and components authorized by Bürkert, as described inthese operating instructions.
The solenoid coil AC10 may be used only in combination withthe valve types released by Bürkert, otherwise the explosion
protection approval will be terminated. If you make unauthorizedchanges to the system, the modules or components, theexplosion protection approval will also be void.
This product is subject to review by the Shanghai Inspection
and Testing Institute of Instruments and Automation Systems
Co., Ltd. (SITIIAS), has been CCC certified to comply withrequirements of national explosion-proof series standard (GB/T
3836.2021-Explosive Atmospheres).
EC-type examination certificate and IECEx certificate were
issued by:Bureau Veritas Consumer Products Services Germany GmbHBusinesspark A96
86842 Türkheim
Solenoid coil AC10:EPS 18 ATEX 1232 X,
IECEx EPS 18.0110X
Terminal box:
PTB 15 ATEX 1011 U,
IECEx PTB 15.0037 U
Production will be audited by: CE 102
PTB (Physikalisch Technische
Bundesanstalt)
Bundesallee 100
38116 Braunschweig
The EU Type Examination Certificate is available online at:country.burkert.com

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AC10, II 2G/D Ex
Basic safety instructions

3

BASIC SAFETY INSTRUCTIONS

These safety instructions do not consider any contingencies
or incidents which occur during installation, operation andmaintenance.
The operator is responsible for observing the location-specificsafety regulations, also with reference to the personnel.

Risk of explosion.
The solenoid coil and valve body form a closed system after installation. When used in potentially explosive atmosphere, there is a riskof explosion if the system is opened in the operating state.
▶ Do not remove or open the system during operation.
Risk of explosion due to electrostatic discharge.

Danger – high pressure.
▶ Before loosening the lines and valves, turn off the pressureand vent the lines.
Risk of electric shock.
▶ Before reaching into the device, switch off the power supply
and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
Risk of burns and risk of fire if used during long-term operation
through hot device surface.
The solenoid coil can get very hot during long-term operation.
▶ Keep the device away from highly flammable substances andmedia and do not touch the device with bare hands.

6

englishIn the event of a sudden discharge from electrostatically charged
devices or individuals, there is a risk of an explosion in the potentiallyexplosive atmosphere.
▶ Take suitable measures to ensure that no electrostatic discharges can build up in the potentially explosive atmosphere.
▶ Do not use the device in areas where there are powerful chargegenerating processes, mechanical reaming and cutting processes,
the spraying of electrons (e.g. in the vicinity of electrostatic coating
equipment) as well as pneumatically conveyed dust.
▶ Clean the device surface by gently wiping it with a damp or
antistatic cloth only.
To avoid the risk of explosion, the following must be observed for
operation in potentially explosive atmosphere:▶ Information on the temperature class, ambient temperature,degree of protection and voltage on the type label for potentiallyexplosive atmosphere.
▶ Installation, operation and maintenance may only be performedby qualified specialists.
▶ The applicable safety regulations (including national regulations) as well as general technical standards must be observed
during setup and operation.

AC10, II 2G/D Ex
General information▶ Repairs may only be performed by the manufacturer.
▶ The device must not be exposed to any mechanical and/or
thermal loads which exceed the limits specified in the operating
instructions.
▶ Before opening the terminal box, disconnect the power supply.

4

GENERAL INFORMATION

4.1

Contact addresses

Germany
Bürkert Fluid Control Systems
Sales Center
Christian-Bürkert-Str. 13-17
D-74653 IngelfingenTel.  + 49 (0) 7940 - 10 91 111
Fax  + 49 (0) 7940 - 10 91 448
E-mail: info@buerkert.com

General hazardous situations.
To prevent injury, ensure:▶ Secure system/equipment against unintentional activation.
▶ Observe the direction of flow during installation.
▶ After an interruption in the power supply or pneumatic supply,
ensure that the process is restarted in a defined or controlledmanner.
▶ Don’t use the device as a lever when screwing the valve into
the line.

International
Contact addresses can be found on the final pages of the printed
operating instructions.
And also on the Internet at: country.burkert.com

4.2

Warranty

The warranty is only valid if the solenoid coil AC10 is used asintended in accordance with the specified application conditions.

4.3

Information on the internet

Operating instructions and data sheets for Bürkert products areavailable online at: country.burkert.com

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AC10, II 2G/D Ex
Product description

5

PRODUCT DESCRIPTION

5.1

DesignComponents of thesolenoid coil AC10:

Components of thesolenoid coil AC10
with terminal box:
Screw

Components ofthe valve:

Circlip

Nut

BracketComponents ofthe valve:

WasherRing cable lug with
supply cable

Connection cable

Nut

Union nut
Terminal box

Coil housing
Core guide tube

Lock screw
BracketValve body withport connection

Fig. 1:

Coil housing

Core guide tube

Solenoid coil Type AC10 with cable outlet
Valve body withport connection

Fig. 2:8

englishSolenoid coil Type AC10 with terminal box

AC10, II 2G/D Ex
Product description

5.2

Solenoid coil with cable outlet

5.3

Solenoid coil with terminal box

The solenoid coil type AC10 is an electromagnetic valve actuatorfor various Bürkert valves. As a so-called top-mounted coil, it isseparated 100 % from the valve. The valve is a closed system even
if the coil is removed.

The design of the solenoid coil is identical to the description under“5.2”, however a terminal box is also installed here (see “Fig. 2”).
The terminal box is certified with the Type Examination Certificate
PTB 15 ATEX 1011 U or IECEx PTB 15.0037U.

The solenoid coil consists of:

The cable outlet direction can be selected according to the order
requirements. The outlet direction can be changed subsequently,
however this requires a special tool1). A connection set for additional
potential equalisation is enclosed with the terminal box; observe
the specifications in chapter “8.2”.

• coil winding,• coil housing (made from epoxy),• electrical connection cable,• bridge rectifier.
Alternating current or direct current control is possible.
The solenoid coil type AC10 is available in a range of ratings distributed across 2 frame sizes. The interface between the coil andvalve is identical for both frame sizes.
The coil is placed over the core guide tube of the valve and attachedwith a nut. It is positively locked to prevent turning relative to thevalve.
The electrical connection cable exits perpendicular to the coil axis.
The cable is permanently integrated in the coil. The union nut is notdesigned to be removed.
An electrical contact is made between the metal components of thevalve and the coil at the interface between the coil and the valve. All
metal components must be grounded via the protective conductorin the connection cable.

1)

To do this, please contact your local Bürkert representative.
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AC10, II 2G/D Ex
Application conditions of the devices

6

APPLICATION CONDITIONS OF
THE DEVICES

6.1

Special conditions

6.1.1

Avoiding build-up of electrostatic
chargeWARNING!

Risk of explosion due to electrostatic discharge.
In the event of a sudden discharge from electrostatically charged
devices or individuals, there is a risk of an explosion in the potentiallyexplosive atmosphere.
▶ Take suitable measures to ensure that no electrostatic discharges can build up in the potentially explosive atmosphere.
▶ Do not use the device in areas where there are powerfulcharge-generating processes, mechanical reaming and cutting processes, the spraying of electrons (e.g. in the vicinityof electrostatic coating equipment) as well as pneumaticallyconveyed dust.
▶ Clean the device surface by gently wiping it with a damp or
antistatic cloth only.

6.1.2

Block assembly

Valve blocks are preferably made up so that all units have thesame coil power consumption. If different coil power consumption
values are used in a single valve block, then the technical data forthe coil with the highest power rating must be used to determine
the temperature class. In this case the ambient temperature must
be no higher than +40 °C.

6.2

Operating conditions

The valve provides a cooling function for the solenoid coil. The
solenoid coil may not be operated without a valve. The valve
body must meet the following requirements:• Material
Metal (brass, aluminium, stainless steel) or polyamide• Minimum dimensions
32 mm x 32 mm x 10 mm
A larger valve body with a higher heat-dissipating capability canbe used at any time.
The solenoid coils designed for individual installation may not be
used for block assembly.
The solenoid coils designed for block assembly are suitable forboth block assembly and for individual installation.

6.3

Operating temperature range

Observe the operating temperature range specified in the electrical
data for all types.
10

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Technical data

7

TECHNICAL DATA

7.1

Safety instructions
DANGER!

Risk of explosion.

7.3

Type label for potentially explosive
atmosphere

7.3.1

Identification of the solenoid coil

Solenoid coil AC10 with sample valve
and the positions of the type label:

Dangerous situations can result if the technical safety data andvalues specified on the type label aren’t observed or cannot be
met.
▶ The degree of protection and temperature class for use of
the device must be observed.

Type label withsolenoid coil AC10
specifications

Type labelwith valve
specifications

Exceeding the voltage specified on the type label creates a safety
hazard since it can lead to overheating of the device!
▶ Don’t connect the device to a higher voltage than that specified on the type label.
1

7.2

Standards and directives

2

The device complies with the relevant EU harmonisation legislation. In addition, the device also complies with the requirements of the laws of the United Kingdom.

3

The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of
the EU Declaration of Conformity/UK Declaration of Conformity.

6

4

8

5
7
9

Fig. 3:

Location and description of the explosion type label

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AC10, II 2G/D Ex
Technical data

7.3.2

Legend:Position

Description

1

ATEX, certificate issuer and certificate number,
explosion protection labelling2

IECEx, certificate issuer and certificate number,
explosion protection labelling3

UKEx, certificate issuer and certificate number

4Type label with Ex-code (last 4 digits)

5

Nominal voltage, nominal power

6

Ambient temperature range

7

Serial number

8

Date of manufacture

9

Identification number

Identification of the terminal box

NOTE!
Attachment of the terminal box changes the type of protection.
Solenoid coil AC10 withterminal box withsample valve and the positions of
the type label:

1
2
3
4
6
8

5
7
9

Fig. 4:12

englishLocation and description of the explosion type labels

AC10, II 2G/D Ex
Technical data
Legend:Position

7.4

Electrical data

7.4.1

Coils for individual installation

Description

1

ATEX, certificate issuer and certificate number,
explosion protection labelling2

IECEx, certificate issuer and certificate number,
explosion protection labelling3

UKEx, certificate issuer and certificate number

4Type label with Ex-code (last 4 digits)

5

Nominal voltage, nominal power

6

Ambient temperature range

7

Direct and alternating voltage, available nominal voltages from
12 V to 240 V, frequency 0 Hz to 60 Hz
CodeOverallwidth[mm]

Temperature
class

Ambient temperature range[°C]

Nominal
power
[W]

PX58

32

T4/T130 °C-40...+55

7.0

40

T4/T130 °C-40...+55

9.0

Serial number

PX60

32

T6/T80 °C-40...+40

3.0

8Date of manufacture

PX61

40

T6/T80 °C-40...+55

1.8

9

Identification number

PX62

32

T6/T80 °C-40...+50

2.25

PX64

32

T5/T95 °C-40...+60

3.0

PX66

32

T4/T130 °C-40...+80

3.0

7.4.2

Coils for block assembly
DANGER!

Risk of explosion due to overheating!
▶ Don’t connect the device to a higher voltage than that specified on the type label.

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AC10, II 2G/D Ex
Accessories
Direct and alternating voltage, available nominal voltages from
12 V to 240 V, frequency 0 Hz to 60 Hz
CodeOverallwidth[mm]

Temperature class

Ambient temperature range[°C]

Nominal
power
[W]

PX59

32

T4/T130 °C-40...+40

7.0

PX63

32

T6/T80 °C-40...+40

2.25

PX65

32

T5/T95 °C-40...+50

3.0

7.4.3

8

ACCESSORIES

8.1

Cable gland for terminal box

Suitable cable glands are available for use of the terminal box.
Plastic cable gland is included in the scope of delivery of
the valve. Brass cable gland must be ordered separately.
Cable glands from other manufacturers may also be used
if they are designed for the installation location and can beinstalled correctly. Note that the application temperature of
the cable gland must be min. 15 K above the max. ambient
temperature.

Electrical connection

Material :Polyolefin

2)

Operating temperature range : -55...+145 °C for fixed installation

Material

Clamping
range
[mm]

Plastic

7...13

Brass

6...132)

Minimum bending radius : x outer diameter for fixed4
installation

Outside diameter2):

6.2 mmDesign / function:

 x stranded copper wire3
0.5 mm² / LNPE

2)Material

Halogen free in accordance with IEC 60754-1
Variants

Internal code

Permanently installed cable

JJ04 + JWxx

Terminal box with internal thread M20 x 1.5

JA13

2)
3)

14

Plastic
Brass

3)

Specifications as per the manufacturer
different cable lengths

english4)
5)

Operating temperature[°C]-40...+75

OrdernumberCertificate
number773 2774)

773 278

5)

IPProtection

Dust
identificationGas
identification

IP66

II 2D Extb IIIC
Db

II 2G Exe IIC Gb

PTB 13 ATEX 1015X; IECEx PTB 13.00034X
PTB 04 ATEX 1112X; IECEx PTB 13.00027X

AC10, II 2G/D Ex
Installation and removal

8.2

External grounding connection for
terminal box

If solenoid coils feature a terminal box, connection terminals are
enclosed for the external grounding connection.
If the potential equalization is not to be connected by a pipeline orby the use of a plastic fitting, the connection can be made via theexternal grounding connection. Its use is therefore optional andmust be assessed by the operator.
The connection capacity of the ring cable lug is 4-6 mm . The connection is made as shown in “Fig. 6”.
2

9

INSTALLATION AND REMOVALDANGER!

Danger – high pressure.
▶ Before loosening the lines and valves, turn off the pressureand vent the lines.
Risk of electric shock.
▶ Before reaching into the device, switch off the power supply
and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
Risk of burns or risk of fire if used during long-term operation
through hot device surface.
▶ Keep the device away from highly flammable substances andmedia and do not touch the device with bare hands.
Risk of short-circuit due to damaged connection cable.
▶ The coil connection cable have to be fixed and protectedagainst damage.
Risk of explosion.
The solenoid coil and valve body form a closed system after installation. When used in potentially explosive atmosphere, there is arisk of explosion if the system is opened in the operating state.
▶ The system must not be disassembled during operation.

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AC10, II 2G/D Ex
Installation and removal

9.2

DANGER!
Risk of explosion due to electrostatic discharge.
In the event of a sudden discharge from electrostatically charged
devices or individuals, there is a risk of an explosion in the potentiallyexplosive atmosphere.
▶ Take suitable measures to ensure that no electrostatic discharges can build up in the potentially explosive atmosphere.
▶ Do not use the device in areas where there are powerfulcharge-generating processes, mechanical reaming and cutting processes, the spraying of electrons (e.g. in the vicinityof electrostatic coating equipment) as well as pneumaticallyconveyed dust.
▶ Clean the device surface by gently wiping it with a damp or
antistatic cloth only.
WARNING!
Risk of injury from improper installation.
▶ Installation may be carried out by authorized technicians only
and with the appropriate tools.
▶ Secure system from unintentional activation.
▶ Following assembly, ensure a controlled restart.

9.1

Installation
Detailed installation instructions can be found in the operating instructions of the respective valve and/or online at:country.burkert.com

16

englishElectrical connection
DANGER!

Risk of electric shock.
▶ Before reaching into the device, switch off the power supply andsecure to prevent reactivation.
▶ Observe applicable accident prevention and safety regulations
for electrical equipment.
There is a risk of electric shock if there is no electrical contact
between the metal parts of the valve and the protective conductorof the coil.
▶ Always connect the protective conductor.
▶ Test for continuity between the protective conductor of the coiland the core guide tube of the valve.
If solenoid coils feature a terminal box, also observe thefollowing:▶ Insert permanently installed cables and lines only.
▶ Use a suitable cable and line entry (see chapter “8”). Observe
specifications in the enclosed operating instructions.
▶ In the terminal box connect only wires which have a rated connection between  0.5 mm2 and 2.5 mm2.
▶ Tighten terminal screws to 0.25 Nm.
▶ Lock housing cover properly. Tighten lock screw to 2 Nm.
▶ Check continuity of the protective conductor connection.
▶ Before opening the housing cover, disconnect the power supply.

AC10, II 2G/D Ex
Installation and removal▶ Temperature resistance of the cable must be min. 15 K above
the max. ambient temperature.

9.2.2

Solenoid coils with terminal box
Position

Terminal box:
▶ The connection terminals for the external earth connection, which
are packed for delivery in a bag and bonded to the housing cover,must be removed during installation of the device.

9.2.1

Protective conductor

Solenoid coils with cable outlet

Neutral conductor /negative pole (-)

The connection cable is encapsulated with the solenoid
coil Type AC10 and cannot be removed.
Observe the indicated voltage according to the typelabel.
Wire color

Pin assignment

green-yellow

Protective conductor

black

Neutral conductor / negative pole (-)

black

Phase / positive pole (+)

Pin assignment of
the supply line

Phase / positivepole (+)

Fig. 5:

Terminal box
Screw
Circlip
WasherRing cable lug with supply
line
WasherFig. 6:

Connection of external potential equalization

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AC10, II 2G/D Ex
Start-up

9.3

10

RemovalDANGER!

Danger – high pressure.
▶ Before loosening the lines and valves, turn off the pressureand vent the lines.
Risk of electric shock.
▶ Before reaching into the device, switch off the power supply
and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!

Risk of injury from improper operation.
Improper operation may result in injuries as well as damage tothe device and the area around it.
▶ Before start-up, ensure that the operating personnel are familiar
with and completely understand the contents of the operating
instructions.
▶ Observe the safety instructions and intended use.
▶ Only adequately trained personnel may start up the equipment or the device.
Before starting up the device, ensure that:WARNING!
Risk of injury from improper removal.
▶ Removal may be carried out by authorized technicians only
and with the appropriate tools.
Risk of injury due to media escaping from leaky connections.
▶ Seal the connection lines carefully.

→ Separate the electrical connections.
→ Separate the valve body from the pipeline.
NOTE!
Malfunctions due to dirt!
▶ Remove the old PTFE tape from the connections during reinstalls. Tape residue must not get into the pipeline.

18

START-UPWARNING!

english→ the device has been installed correctly,→ the connection has been made properly,→ the device is not damaged,→ all screws have been tightened.

AC10, II 2G/D Ex
Maintenance, Repair, Troubleshooting

11

MAINTENANCE, REPAIR,
TROUBLESHOOTING

11.1

Maintenance work

The solenoid coil AC10 are maintenance-free when operated
under the conditions described in this manual.

11.2

RepairDANGER!

12

TRANSPORTATION, STORAGE,DISPOSALNOTE!
Transport damages!
Inadequately protected equipment may be damaged duringtransport.
▶ During transportation protect the device against wet and dirtin shock-resistant packaging.
▶ Avoid exceeding and dropping below the allowable storage
temperature.

Danger due to improper repairs.

Incorrect storage may damage the device.

The safety and functionality of the AC10 coil and corresponding
solenoid valve following a repair are only given if the repair work
was performed by the manufacturer.
▶ Only have the device repaired by the manufacturer.

Allowable storage temperature: –40...+80 °C.     ▶ Store the device in a dry and dust-free location.

11.3

Troubleshooting

If malfunctions occur, ensure that:→ the device has been installed correctly,→ the connection has been made properly,→ the device is not damaged,→ the voltage and pressure have been switched on,→ the pipelines are free,→ all screws have been tightened.

Environmentally friendly disposal▶ Follow national regulations regarding disposal andthe environment.
▶ Collect electrical and electronic devices separately
and dispose of them as special waste.
Further information country.burkert.com.

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AC10, II 2G/D Ex
Transportation, Storage, Disposal

20

englishcountry.burkert.com