Burkert 6524 User manual

Operating Instructions

Type 6524/6525

3/2-, 2x3/2- or 5/2-way solenoid valve for pneumatics

1 OPERATING INSTRUCTIONS

The operating instructions contain important information.

▶Carefully read these instructions and follow the safety

information.

▶Keep the manual and make it available to every user.

▶People who work on the device must read and understand these

instructions.

1.1 Symbols

DANGER!

Immediate danger! Fatal or serious injuries.

WARNING!

Potential danger! Fatal or serious injuries.

CAUTION!

Danger! Moderate or minor injuries.

NOTE!

Warns of damage.

▶Indicates instructions to avoid danger.

→Indicates a procedure you need to carry out.

Inhaltsverzeichnis

1 Operating instructions.................................................................. 2

2 Intended use ............................................................................... 3

3 Basic safety instructions .............................................................. 3

4 Structure and description ............................................................ 5

5 Technical data ............................................................................. 6

6 Assembly / installation ................................................................. 8

7 Start-up..................................................................................... 14

8 Maintenance, troubleshooting ................................................... 15

9 Disassembly .............................................................................. 16

10 Transportation, storage, disposal............................................... 16

English

3 BASIC SAFETY INSTRUCTIONS

These safety instructions do not take into account any unforeseen

circumstances and events which occur during installation, oper-

ation and maintenance. The operator is responsible for observing

the location-specic safety regulations, also with reference to

personnel.

Risk of injury due to high pressure and any escaping media.

▶Switch o the pressure before working on the device or system.

Vent or empty the lines.

Danger of injury due to unconnected compressed-air hoses

whipping around

▶Check all hose connections are seated properly before applying

compressed air to the valve.

Risk of injury from electric shock.

▶Switch o the power supply before working on the device or

system. Secure against reactivation.

▶Observe the applicable accident prevention and safety regula-

tions for electrical devices.

2 INTENDED USE

The device serves exclusively as a 3/2-, 2x3/2- or 5/2-way

solenoid valve for the media that is permitted based on the data

sheet for the corresponding type.

▶Do not use the device outdoors.

▶Use the device only in conjunction with third-party devices and

components that are recommended or approved by Bürkert.

▶Prerequisites for safe and trouble-free operation include correct

transportation, correct storage, installation, start-up, operation and

maintenance.

▶Observe the permissible data, operating conditions and conditions

of use of the respective devices or products. These specications

can be found in the contract documents, operating instructions

and on the type label.

▶Use the device only as intended. Improper use of the device may

be dangerous to people, nearby equipment and the environment.

2.1 Denition of terms

Term Denition for these instructions

Device Solenoid Valve Type 6524 or Type 6525

English

Risk of burns or re from hot device surfaces due to longer duty

cycles.

▶Only touch the device when wearing protective gloves.

▶Keep the device away from highly ammable substances and media.

General hazardous situations.

Observe the following to prevent injuries:

▶Observe the general rules of technology.

▶In a potentially explosive atmosphere, only use devices that are

approved for this purpose. These devices are identied by a separate

“Ex” type label. Before use, note the information on the separate

Ex type label and the Ex additional instructions or the separate Ex

operating Instructions.

▶Only use the device when it is in a perfect state and in accordance

with the operating instructions.

▶Secure the device or system to prevent unintentional activation.

▶After an interruption in the power supply, ensure that the process is

restarted in a controlled manner.

▶Do not modify the device.

▶Do not mechanically load the device.

▶Only trained technicians may perform installation and maintenance

work.

▶Only use suitable tools to perform installation and maintenance

work.

▶To avoid pressure drops during switching, make the pressure

supply volume is as large as possible.

▶Operate the device only with direct current.

▶Install the device according to the regulations applicable in the

respective country.

3.1 Variant PF34 for safety-related shutdown

DANGER!

Risk of injury from uncontrolled process

▶The system operator must ensure that the safety-related shut-

down does not trigger a dangerous, uncontrolled process.

English

NOTE!

Electrostatically sensitive components / assemblies

The device contains electronic components that are susceptible

to the eects of electrostatic discharging (ESD). Components are

at risk if they come into contact with electrostatically charged

persons or objects. In the worst-case scenario, they will be

destroyed immediately or will fail after start-up.

▶Observe the requirements for minimising or avoiding the pos-

sibility of damage caused by sudden electrostatic discharge in

accordance with EN 61340-5-1.

▶Do not touch electronic components when the supply voltage is

connected.

4 STRUCTURE AND DESCRIPTION

Type 6524

3/2-way valve

Type 6524

2 x 3/2-way valve

Type 6525

5/2-way valve

The valves consist of a rocker pilot solenoid valve (Type 6144) and

a pneumatic seat valve. Pilot valve and body are clamped together.

The principle allows the switching of high pressures together with

low power consumption and fast switching times.

The valves can be lined up and with plug connections at the rear

are preferably used for valve islands; with tag connectors at the

front they are preferably used on valve blocks to control pneumatic

actuators.

All pilot valves are equipped with a manual override as a standard.

English

4.1 Variant PF34 for safety-related shutdown

The PF34 variant of the Type 6524 and 6525 valves is equipped

with an additional cable. It allows the valve circuit to be interrupted

by an external switch or sensor.

The PF34 variant has no manual override.

Type 6524

3/2-way valve

Type 6524

2 x 3/2-way valve

Type 6525

5/2-way valve

Fig. 1: Variant PF34 for safety-related shutdown

5 TECHNICAL DATA

5.1 Operating conditions

WARNING!

Risk of injury due to malfunction if used outdoors.

▶Do not use the device outdoors.

▶Avoid heat sources that could lead to the permissible tempera-

ture range being exceeded.

NOTE!

Operate valve at temperatures below 0 °C only with dry air.

Ambient temperature –10...+55°C

Medium temperature –10...+50°C

Medium • Filtered compressed air (max. particle

size 5 µm), preferably oil-free and dry

(operation with oiled air is possible)

• Neutral gases, air

Compressed air quality ISO 8573-1:2010

English

Degree of protection IP40 with rectangular plug

Installation position Any, preferably actuator face up

Manual override Standard

Protection class III according to VDE 0580

Switching times [ms]

See data sheet

Measurement at valve outlet at 6 bar and

+20 °C:

Opening pressure build-up 0...90 %

Closing pressure reduction 100...10 %

Materials See data sheet

5.2 Electrical data

Operating voltage 24V

Voltage tolerance ±10%

Nominal power 1W

Nominal operating

mode

Continuous operation (100% duty cycle)

Electrical connection:

On valve

Valve island

Valve block

Rectangular connector

With grid 5.08 mm

With integrated plug socket

IP40 with rectangular connector

5.3 Type label (example)

Germany

6524 C

2,5—10bar

24VBA0,8W

W1XAW

00123456

Fig. 2: Example of a type plate inscription

Items Text Description

16524 Device type

CCircuit function

22,5–10 bar Permitted pressure range

324VBA0 Voltage (±10 %)

8 W Power

400123456 Order number of the device

Table 1: Description of the type plate inscription

English

5.4 Circuit functions (CF)

C, 2 x 3/2-way

Outlet 2 and outlet 4

vented when idle.

1 3

C, 3/2-way valve

Output 2 vented when idle

1 3

D, 3/2-way valve

Pressure port 1 connected to outlet 2 when

idle

4 2

513

H, 5/2-way valve

Pressure port 1 connected to outlet 2 when

idle, outlet 4 vented

6 ASSEMBLY / INSTALLATION

WARNING!

Risk of injury due to improper installation

▶Only trained technicians may perform installation work.

▶Only carry out installations with suitable tools.

▶Secure the system against unintentional activation.

▶Following installation, ensure a controlled restart.

WARNING

Risk of injury due to uncontrolled movement of the actuators

Back pressure in the exhaust air ducts can cause uncontrolled

movements of the actuators.

▶Use large-volume silencers.

Prior to installation

→Clean pipelines.

→If necessary, connect a dirt trap (5 µm) upstream.

Installation position

Any installation position, preferably with the actuator facing up.

English

6.1 Installation of the valve on the valve block

→Place the valve on the valve block, ensuring that the ange seal

is correctly inserted (see “Fig. 3”).

→Screw on the valve (for sequence and tightening torques see

“Fig. 3”).

20 Ncm

30 Ncm

Flange seal

Fig. 3: Installation of the valve on the valve block, tightening torques

6.2 Electrical installation pilot valve

DANGER!

Risk of injury from electric shock.

▶Switch o the power supply before working on the device or

system. Secure against reactivation.

▶Observe the applicable accident prevention and safety regula-

tions for electrical devices.

NOTE!

▶Observe voltage.

▶In case of alternating voltage, a rectier must be connected in

series.

English

Rectangular

connector

Circular plug Strand

connection

Fig. 4: Connection options Type 6144 pilot valve

→Observe the type plate information on voltage, electrical power

and current type. Voltage tolerance ±10 %.

At 100% duty cycle and maximum ambient temperature the coil

heats up

in single assembly to approx. +105 °C

in block assembly to approx. +120 °C

6.2.1 Pin assignment

3/2- and 5/2-way valve 2 x 3/2-way valve

(+)

(–)JB17 (–)

(+)JB18

14(–)12(–) (+)

JB20

14(+)12(+) (–)

JB21

14( )12( ) ( )

JF79

Fig. 5: Pin assignment 3/2-, 5/2- and 2 x 3/2-way valves

English

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