Burkert 6020 User manual

Type 6020
Direct-acting 2-way proportional valve
Operating Instructions

We reserve the right to make technical changes without notice.
© Bürkert Werke GmbH & Co. KG, 2023
Operating Instructions 23010/01_EUen 00815430 / Original DE

Type 6020
Contents
3
CONTENTS
1 About this document..................................................................................................................................4
1.1 Manufacturer.....................................................................................................................................4
1.2 Symbols ............................................................................................................................................4
1.3 Terms and abbreviations ..................................................................................................................5
2 Safety..........................................................................................................................................................6
2.1 Safety instructions ............................................................................................................................6
2.2 Intended use .....................................................................................................................................7
3 Product description ...................................................................................................................................8
3.1 Product structure ..............................................................................................................................8
3.2 Product identification........................................................................................................................9
3.2.1 Type label ............................................................................................................................9
4 Technical data ..........................................................................................................................................10
4.1 Standards and Directives................................................................................................................10
4.2 Operating conditions.......................................................................................................................10
4.3 Circuit function................................................................................................................................11
5 Installation ................................................................................................................................................12
5.1 Preparatory work.............................................................................................................................12
5.2 Cable plug installation.....................................................................................................................12
5.3 Installation of socket variants .........................................................................................................13
5.4 Cartridge variant installation ...........................................................................................................13
5.5 Flange variant installation ...............................................................................................................15
6 Electrical connection................................................................................................................................17
6.1 Cable plug Type 2518, plug shape A according to DIN EN175301-803 .......................................17
6.2 Automotive plugs for IP6K9K coil variants......................................................................................18
7 Faults ........................................................................................................................................................19
8 Logistics ...................................................................................................................................................20
8.1 Transport and storage ....................................................................................................................20
8.2 Disposal ..........................................................................................................................................20

Type 6020
About this document
4
1 ABOUT THIS DOCUMENT
The document is an important part of the product and guides the user to safe installation and operation.
The information and instructions in this document are binding for the use of the product.
Before using the product for the first time, read and observe the whole safety chapter.
Before starting any work on the product, read and observe the respective sections of the document.
Keep the document available for reference and give it to the next user.
Contact the Bürkert sales office for any questions.
Further information concerning the product at country.burkert.com.
1.1 Manufacturer
Bürkert Fluid Control Systems
Christian-Bürkert-Str. 13−17
D-74653 Ingelfingen
The contact addresses are available at country.burkert.com in the menu "Contact".
1.2 Symbols
DANGER!
Warns of a danger that leads to death or serious injuries.
WARNING!
Warns of a danger that can lead to death or serious injuries.
CAUTION!
Warns of a danger that can lead to minor injuries.
NOTICE!
Warns of property damage that can damage the product or the installation.
Indicates important additional information, tips and recommendations.
Refers to information in this document or in other documents.
Indicates a step to be carried out.
Indicates a result.
Menu Indicates a software user-interface text.

Type 6020
About this document
5
1.3 Terms and abbreviations
The terms and abbreviations are used in this document to refer to following definitions.
Device Type 6020 2-way proportional valve
bar Unit for relative pressure

Type 6020
Safety
6
2 SAFETY
2.1 Safety instructions
Qualification of personnel working with the device
Improper use of the device can lead to serious personal injury or death. To avoid accidents when working
with the device, the following minimum requirements must be met:
Carry out work on the device within the scope of these instructions in a safety-compliant manner.
Detect and avoid dangers when working on the device.
Understand the instructions and implement the information contained therein accordingly.
Responsibility of the operator
The operator is responsible for observing the location-specific safety regulations, also in relation to person-
nel.
Observe the general rules of technology.
Install the device according to the regulations applicable in the respective country.
The operator must make hazards arising from the location of the device avoidable by providing appropri-
ate operating instructions.
Changes and other modifications, spare parts and accessories
Changes to the device, incorrect installation or use of non-approved devices or components create hazards
that can lead to accidents and injuries.
Do not make any changes to the device.
Do not mechanically load the device.
Observe the operating instructions of the device or component used.
Only use the devices in conjunction with approved devices or components.
Spare parts and accessories that do not meet Bürkert’s requirements may impair the operational safety of
the device and cause accidents.
To ensure operational safety, only use original parts from Bürkert.
Operation only after proper transport, storage, installation, start-up or maintenance.
Improper transport, storage, installation, start-up or maintenance endanger the operational safety of the
device and can cause accidents. This can lead to serious personal injury or death.
Only carry out works which are described in these instructions.
Only carry out works using suitable tools.
Have all other works carried out by Bürkert only.
Technical limit values and media
Non-compliance with technical limit values or unsuitable media can damage the device and lead to leaks.
This can cause accidents and seriously injure or kill people.
Comply with limit values. See Technical data [}10] and information on the type label.
Only feed media into the media ports that are listed in the chapter Technical data [}10].
Observe the safety data sheet for the media used.

Type 6020
Safety
7
Medium under pressure
Medium under pressure can seriously injure people. In the event of overpressure or pressure surges, the
device or lines can burst. Pneumatic lines that are defective or not securely fastened can come loose and
swing around.
Before working on the device or system, switch off the pressure. Vent or empty the lines.
Adhere to the permitted pressure ranges of the medium.
Comply with the permitted temperature ranges of the medium.
Electric shock due to electrical components
Touching live parts can result in severe electric shock. This can lead to serious personal injury or death.
Before working on the device or system, switch off the power supply. Secure it against reactivation.
Observe any applicable accident prevention and safety regulations for electrical devices.
Hot surfaces and fire hazard
The surface of the device can become hot with fast-switching actuators or with hot media.
Wear suitable protective gloves.
Keep highly flammable substances and media away from the device.
Working on the device
Working on the device that has not been powered down, unauthorised switching on or uncontrolled start-
up of the system can cause accidents. This can lead to serious personal injury or death.
Only work on the device when it is not in use.
Ensure that the device or system cannot be switched on unintentionally.
Only start the process in a controlled manner following disruptions. Observe sequence:
1. Apply supply voltage or pneumatic supply.
2. Charge the device with medium.
2.2 Intended use
The device is designed to control the flow rate of media. The permitted media are listed in Technical
data [}10].
Prerequisites for safe and trouble-free operation are correct proper transportation, storage, installation,
start-up, operation and maintenance.
The instructions are part of the device. The device is intended exclusively for use within the scope of these
instructions. Uses of the device that are not described in these instructions, the contractual documents or
the type label can lead to severe personal injury or death, damage to the device or property and dangers for
the surrounding area or the environment.
Do not mechanically load the device.
Only trained and qualified personnel may install, operate and maintain the device. See qualification of
persons in Safety instructions [}6]
Use the device only in conjunction with third-party devices and components recommended and author-
ized by Bürkert.
Use the device only when it is in perfect condition.

Type 6020
Product description
8
3 PRODUCT DESCRIPTION
Type 6020 is a direct-acting 2/2-way proportional valve with the following properties:
Proportional valve for flow or pressure control and fuel cell systems and other hydrogen applications
Integrated shut-off function with reliably high tightness
Excellent responding behaviour and high setting range
Available as flange or cartridge variant for quick system integration
Degree of protection IP65 or IP6K9K with automotive plug
3.1 Product structure
2
4
1
5
3
Fig.1: Type 6020 cartridge variant FC17
1 Coil 2 Retaining plate
3 Valve body 4 Type label
5 Nut for coil attachment
2
3
4
1
Fig.2: Type 6020 flange variant FK15
1 Coil 2 Valve body
3 Type label 4 Nut for coil attachment

Type 6020
Product description
9
3
1
4
2
Fig.3: Type 6020 socket variants
1 Coil 2 Valve body
3 Type label 4 Nut for coil attachment
3.2 Product identification
3.2.1 Type label
1 2 3 4 5
6
7
8
9
10
11
Fig.4: Type 6020 type label (example)
1 Type 2 Circuit function
3 Orifice 4 Sealing material
5 Body material 6 Operating pressure
7 Nominal power 8 CE marking
9 Article number 10 Operating voltage
11 Port connection

Type 6020
Technical data
10
4 TECHNICAL DATA
4.1 Standards and Directives
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.
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.
4.2 Operating conditions
NOTICE!
High pressure surges
Liquids and high differential pressure may cause high pressure surges.
Valve control specification
To ensure an unrestricted service life of the valve seat seal, the valve should not be repeatedly
switched off abruptly during normal operation.
It is recommended to implement a ramp time of at least 0.2 s when switching off the valve. Alternat-
ively, the PWM duty cycle can be set to 20% for 0.2 seconds before the valve is completely
switched off.
Operating mode Unless otherwise specified on the type label, the solenoid actuator is
suitable for continuous operation.
The maximum coil current must not be exceeded.
24 V variant: 800 mA
12 V variant: 1500 mA
Medium neutral gases, pure hydrogen, natural gas, others on request
Installation position Any, preferably actuator face up
Medium temperature -40…+90 °C
Ambient temperature -40…+85 °C
Storage temperature −40...+80°C
Materials see data sheet
Protection classes
(according to VDE 0580)
I (standard coil)
III (coil with automotive plug)
Degree of protection (EN 60529 /
IEC 60529)
IP65*
*With correctly connected cable plug.
Degree of protection (NEMA 250) 4X*
*With correctly connected Type 2509 cable plug for VA variants
(other variants on request).
Degree of protection (ISO20653) IP6K, IPX7 (immersion test in accordance with ISO 16750-4), IPX9K*

Type 6020
Technical data
11
*Degree of protection can only be guaranteed if the coil is not re-
moved from the valve.
4.3 Circuit function
Icon Description
2 (A)
1 (P)
Circuit function A (WWA), NC
2/2-way solenoid proportional valve, direct-acting
Normally closed
Tab.1: Circuit function

Type 6020
Installation
12
5 INSTALLATION
5.1 Preparatory work
DANGER!
Risk of injury from high pressure and discharge of medium.
Before working on the device or system, switch off the pressure. Vent or drain lines.
Clear pipes of any dirt.
Fit a dirt trap on a dirty medium before the valve inlet (mesh size 0.2...0.4mm).
Devices that are suitable for use with food according to the manufacturer should be flushed for
5minutes prior to start-up.
Seal pipe connections using an elastomer seal or PTFE tape. Ensure that seal material does not get into
the device.
5.2 Cable plug installation
CAUTION!
If there is no protective conductor function, there is a risk of injury from electric shock.
Always connect the protective conductor.
Check electrical continuity between coil and body.
1
50...60 Ncm
Fig.5: Install the cable plug
1 Seal
Attach the cable plug (for permitted types, see data sheet) to the contacts on the coil.
Check that the seal is properly fitted.
Tightly screw cable plug, while observing a tightening torque between 50 Ncm and 60 Ncm.
Connect the protective conductor.
Check electrical continuity between coil and body.

Type 6020
Installation
13
5.3 Installation of socket variants
Fig.6: Installation of socket variants
Note flow direction: see data sheet
Ensure that the seal surfaces on the body port connections are free of any damage.
Hold the device on the valve body using an open-end wrench and screw into the pipeline.
NOTICE!
Be sure not to damage the seal surfaces on the body port connections when screwing into the pipeline.
5.4 Cartridge variant installation
Fig.7: Installation of cartridge variants, example FC17
Ensure that the O-rings on the valve body and the seal surfaces of the connection housing are free of
any damage.
Recommendation:coat O-rings on the body in a suitable lubricant to prevent damage.
Press the valve into the connection housing.
Tightly screw in the retaining plate crosswise, observing the tightening torque indicated in the following
table.

Type 6020
Installation
14
NOTICE!
Ensure that the O-rings on the valve body and the seal surfaces of the connection housing are not dam-
aged during installation.
Variant Tightening torque [Nm] Screwing
FC17 6 M5 (screws not included
in the scope of delivery)
Fig.8: Connection diagram for cartridge variant FC17

Type 6020
Installation
15
5.5 Flange variant installation
Fig.9: Flange variant installation
Ensure that the O-rings on the valve body and the seal surfaces of the connection housing are free of
any damage.
Place the valve on the connection housing.
Tightly screw in the valve body crosswise, observing the tightening torque indicated in the following
table.
NOTICE!
Ensure that the O-rings on the valve body and the seal surfaces of the connection housing are not dam-
aged during installation.
Variant Tightening torque [Nm] Screwing
FK15 6 M5 (screws not included
in the scope of delivery)

Type 6020
Installation
16
Fig.10: Connection diagram for flange variant FK15

Type 6020
Electrical connection
17
6 ELECTRICAL CONNECTION
WARNING!
Risk of injury from electric shock.
Switch off the power supply before working on the device or system. Secure it against reactivation.
Observe the applicable accident prevention and safety regulations for electrical devices.
6.1 Cable plug Type 2518, plug shape A according to DIN
EN175301-803
Other cable plug variants can be found on the data sheet for Type 2518 at country.burkert.com.
Fig.11: Cable plug Type 2518, plug shape A according to DIN EN 175301-803
Fig.12: Cable plug dimensions Type 2518
Further information, such as wiring and electrical values can be found on the data sheet for
Type2518 at country.burkert.com.

Type 6020
Electrical connection
18
6.2 Automotive plugs for IP6K9K coil variants
For mobile applications, coils are provided with the following automotive plugs:
KOSTAL MLK1.2 plug, 2-pin, coding A (male)
TE MCON 1.2 plug, 2-pin, coding A (male)
Fig.13: Automotive plugs for IP6K9K coil variants
Customer-specific plug forms available on request.

Type 6020
Faults
19
7 FAULTS
DANGER!
Risk of injury from high pressure and discharge of medium.
Before working on the device or system, switch off the pressure. Vent or drain lines.
WARNING!
Risk of injury from electric shock.
Switch off the power supply before working on the device or system. Secure it against reactivation.
Observe the applicable accident prevention and safety regulations for electrical devices.
Error Possible cause Remedy
No flow No supply pressure Check supply pressure
Valve connections switched Check if pressure applied to valve
is correct (see installation chapter)
Electrical connection faulty Check if electrical contacts and
supply voltage are correct
Filter clogged Check filter and clean if necessary
Flow value not reached Input pressure level too low Check if sufficient input pressure
level is present for desired flow
Other pressure drop in system Check filter for soiling.
Check armatures and lines in sys-
tem for sufficient dimensioning
Supply voltage is too low Adjust supply voltage (see operat-
ing conditions)
Ambient temperature too high
and/or average modulation too
high
Reduce ambient temperature
Adjust valve layout
Valve layout not correct Contact Bürkert contact person
Increased noise development PWM frequency not coordinated
to valve
Set recommended PWM fre-
quency
Vibration stimulation present in
system
If possible, reduce pressure level
If possible, increase cable cross-
section
Otherwise, contact Bürkert con-
tact person

Type 6020
Logistics
20
8 LOGISTICS
8.1 Transport and storage
Protect the device against moisture and dirt in the original packaging during transportation and storage.
Avoid UV radiation and direct sunlight.
Protect connections from damage with protective caps.
Observe permitted storage temperature.
8.2 Disposal
Environmentally friendly disposal
Follow national regulations regarding disposal and the environment.
Collect electrical and electronic devices separately and dispose of them as special waste.
Further information at country.burkert.com