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 new owner of the device.

Important safety information.

Failure to observe these instructions may result in hazardous situations.

▶ The operating instructions must be read and understood.

1.1 Symbols

DANGER!

Warns of an immediate danger.

▶ Failure to observe the warning will result in a fatal or serious injury.

WARNING!

Warns of a potentially dangerous situation.

▶ Failure to observe the warning may result in serious injuries or death.

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.

• Failure to observe the warning may result in damage to the device or the equipment.

Indicates important additional information, tips and recommendations.

refers to information in these operating instructions or in other documentation.

▶ Designates an instruction to prevent risks.

→ Designates a procedure which you must carry out.

1.2 Definition of term / abbreviation

The term “device” used in these instructions always stands for the control head Type 8695.

In these instructions, the abbreviation “Ex” always refers to “potentially explosive”.

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Type 8695

Authorized use

2 AUTHORIZED USE

Non-authorized use of the control head Type 8695 may be a hazard to people, nearby equipment and the environment.

The device is designed to be mounted on pneumatic actuators of process valves for the control of media.

▶ In the potentially explosion-risk area the control head Type 8695 may be used only according to the specification on the separate approval sticker. For use observe the additional instructions enclosed with the device together with safety instructions for the explosion-risk area.

▶ Devices without a separate approval sticker may not be used in a potentially explosive area.

▶ Do not expose the device to direct sunlight.

▶ Use according to the authorized data, operating conditions and conditions of use specified in the contract

documents and operating instructions. These are described in the chapter entitled “6 Technical data”.

▶ The device may be used only in conjunction with third-party devices and components recommended and authorized by Bürkert.

▶ In view of the large number of options for use, before installation, it is essential to study and if necessary to test whether the control head is suitable for the actual use planned.

▶ Correct transportation, correct storage and installation and careful use and maintenance are essential for reliable and faultless operation.

▶ Use the control head Type 8695 only as intended.

2.1 Restrictions

If exporting the system/device, observe any existing restrictions.

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Type 8695

Basic safety instructions

3 BASIC SAFETY INSTRUCTIONS

These safety instructions do not make allowance for any

• contingencies and events which may arise during the installation, operation and maintenance of the devices.

• local safety regulations – the operator is responsible for observing these regulations, also with reference to the installation personnel.

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment..

General hazardous situations.

To prevent injury, ensure:

▶ That the system cannot be activated unintentionally.

▶ Installation and repair work may be carried out by authorized technicians only and with the appropriate tools.

▶ After an interruption in the power supply or pneumatic supply, ensure that the process is restarted in a defined or controlled manner.

▶ The device may be operated only when in perfect condition and in consideration of the operating instructions.

▶ The general rules of technology apply to application planning and operation of the device.

To prevent damage to property on the device, ensure:

▶ Do not feed any aggressive or flammable media into the pilot air port.

▶ Do not feed any liquids into the pilot air port.

▶ When unscrewing and screwing in the body casing or the transparent cap, do not hold the actuator of the process valve but the connection housing of Type 8695.

▶ Do not put any loads on the body (e.g. by placing objects on it or standing on it).

▶ Do not make any external modifications to the device bodies. Do not paint the body parts or screws.

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Type 8695

General information

4 GENERAL INFORMATION

4.1 Contact address

Germany

Bürkert Fluid Control System

Sales Center

Chr.-Bürkert-Str. 13-17

D-74653 Ingelfingen

Tel. + 49 (0) 7940 - 10 91 111

Fax + 49 (0) 7940 - 10 91 448

E-mail: [email protected]

International

Contact addresses can be found on the final pages of the printed operating instructions.

And also on the Internet at: www.burkert.com

4.2 Warranty

The warranty is only valid if the control head Type 8695 is used as intended in accordance with the specified application conditions.

4.3 Trademarks

Brands and trademarks listed below are trademarks of the corresponding companies / associations / organizations

Loctite Henkel Loctite Deutschland GmbH

4.4 Information on the internet

The operating instructions and data sheets for Type 8695 can be found on the Internet at: www.burkert.com

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Type 8695

System description

5 SYSTEM DESCRIPTION

5.1 Structure and function

The control head Type 8695 can control single or double-acting process valves.

The control head Type 8695 has been optimized for the integrated modular fitting of series 21xx process valves

(Element) with actuator size ∅ 50. Various expansion stages are possible thanks to the modular design.

For installation on the 20xx series (Classic) there is a special model which is described in chapter “5.1.2”.

The valve position is recorded via a contactless, analog sensor element which automatically detects and saves the valve end positions by means of the teach function during start-up.

Option: Communication possible via AS-Interface and DeviceNet.

5.1.1 Control head for integrated installation on 21xx series

(Element)

View without transparent cap:

Teach function

Pressure limiting valve

(for protection against too high internal pressure in case of error)

Electrical connection

Circular plug-in connector

M12 x 1

Connection housing

Figure 1: Structure and function

Pilot air port

(label: 1)

Fastening screws (2 x)

Air exhaust port

(label: 3)

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Type 8695

System description

5.1.2 Model for control of process valves belonging to the 20xx series (Classic)

A special model enables the control head Type 8695 to be attached to process valves belonging to the 20xx series.

This model has a different pneumatic connection module so that the pilot air ports can be connected to the

outside of the actuator (see “Figure 2”).

Figure 2: Model for control of process valves, 20xx series

Pilot air outlet 2

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Type 8695

Technical data

6 TECHNICAL DATA

6.1 Conformity

In accordance with the EU Declaration of conformity, the control head Type 8695 is compliant with the EU Directives.

6.2 Standards

The applied standards on the basis of which compliance with the EU Directives is confirmed are listed in the EU-

Type-Examination Certificate and/or the EU Declaration of Conformity.

6.3 Licenses

The product is approved for use in zone 2 and 22 in accordance with ATEX directive 2014/34/EU category 3GD.

Observe instructions on operation in an explosion-risk (Ex) area.

Observe the ATEX additional instructions.

The product is cULus approved. Instructions for use in the UL area see chapter “6.8 Electrical data”.

6.4 Operating conditions

WARNING!

Solar radiation and temperature fluctuations may cause malfunctions or leaks.

▶ If the device is used outdoors, do not expose it unprotected to the weather conditions.

▶ Ensure that the permitted ambient temperature does not exceed the maximum value or drop below the minimum value.

Ambient temperature see type label

Degree of protection

Evaluated by the manufacturer: Evaluated by UL:

IP65 / IP67 according to EN 60529 1) UL Type 4x Rating 1)

Only if cables, plugs and sockets have been connected correctly and in compliance with the exhaust air concept see

chapter “8 Pneumatic installation”.

6.5 Mechanical data

Dimensions See data sheet

Body material exterior interior

Sealing material exterior

PPS, PC, VA

ABS

EPDM / FKM

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Type 8695

Technical data

Stroke range of valve spindle 21xx series (Element) and 20xx series (Classic)

Third-party devices

(modified guide element required)

AS-Interface 2 – 25 mm

24 V DC

DeviceNet

2 – 35 mm

AS-Interface 2 – 34 mm

24 V DC

DeviceNet

2 – 44 mm

6.6 Type labels

6.6.1 Type label standard

Example:

Supply voltage / Control

Type

8695 24 V/DC single act Pilot 0,6

Pmax 7 bar

Tamb 0°C - +55°C

S/N 001000

00185114 W14UN

Identification number

Control function - Pilot valve

Max. operating pressure

Max. ambient temperature

Serial number - CE mark

Bar-code

Figure 3: Type label (example)

6.6.2 UL type label

Example:

Type; Features of the type code applicable to UL and ATEX

Control function; pilot valve;

Supply voltage pilot valve

8695 -E1-...-0 PU02

Single act Pilot 0.6 24V

Pmax 7 bar

Tamb -10 - +55 °C

S/N 1001

00123456

W15MA

Max. operating pressure

Max. ambient temperature

Serial number / CE mark

Bar code

Identification number; Date of manufacture (encoded)

Figure 4: UL type label (example) english

Type 8695

Technical data

6.6.3 UL additional label

Example:

Figure 5:

Degree of protection

Circuit with limited power

Supply voltage device

UL additional label (example)

Type 4X enclosure

NEC Class 2 only

Supply voltage: 24 V

6.7 Pneumatic data

Control medium neutral gases, air

Quality classes in accordance with ISO 8573-1

Dust content Class 7 max. particle size 40 µm, max. particle density 10 mg/m³

Water content Class 3 max. pressure dew point

- 20 °C or min. 10 °C below the lowest operating temperature

Oil content Class X max. 25 mg/m³

Temperature range -10 – +50 °C

Pressure range 3 – 7 bar

Air output of pilot valve 7 l

/ min (for aeration and deaeration)

- value according to definition for pressure drop from 7 to 6 bar absolute)

Connections 21xx (Element)

20xx (Classic)

Plug-in hose connector ∅ 6 mm / 1/4“

Socket connection G 1/8

Socket connection G 1/8 with M5 connection for connecting to the actuator english

Type 8695

Technical data

6.8 Electrical data

WARNING!

Only circuits with limited power may be used for UL approved components according to “NEC Class 2”.

6.8.1 Electrical data without bus control 24 V DC

Protection class 3 as per DIN EN 61140 (VDE 0140-1)

Connections Circular plug-in connector (M12 x 1, 8-pole)

Pilot valve

Operating voltage 24 V DC ± 10% - max. residual ripple 10 %

Power input max. 1 W

Output max. 100 mA per output

Display max. 20 mA per illustrated illuminated display (LED)

6.8.2 Electrical data with AS-Interface bus control

Protection class 3 as per DIN EN 61140 (VDE 0140-1)

Connections Circular plug-in connector (M12 x 1, 4-pole)

Profile S-B.A.E. (A/B slave, max. 62 slaves/master)

Operating voltage 29.5 V – 31.6 V DC (according to specification)

Outputs

Max. switching capacity 1 W via AS-Interface

Watchdog function integrated

Max. power consumption 120 mA

Power consumption input during normal operation

(after current reduction; valve + 1 end position reached) 90 mA

6.8.3 Electrical data with DeviceNet bus control

Protection class 3 as per DIN EN 61140 (VDE 0140-1)

Connections Circular plug-in connector (M12 x 1, 5-pole)

Operating voltage 11 V – 25 V

Max. power consumption < 80 mA

Output Pull-in current current ≤ 50 mA

Holding current ≤ 30 mA english

Type 8695

Installation

7 INSTALLATION

7.1 Safety instructions

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper installation.

▶ Installation may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following assembly, ensure a controlled restart.

7.2 Installation of the control head Type 8695 on process valves of series 21xx (Element)

NOTE!

When mounting on process valves with a welded body, follow the installation instructions in the operating instructions for the process valve.

Procedure:

1. Install switch spindle

Transparent cap

Pilot air ports

(plug-in hose connectors with collets or threaded bushings)

Actuator

Figure 6: Installation of switch spindle (1), series 21xx

→ Unscrew the transparent cap on the actuator and unscrew the position display (yellow cap) on the spindle extension (if present).

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Type 8695

Installation

→ For version with plug-in hose connector, remove the collets (white nozzles) from both pilot air ports (if present).

Puck

Switch spindle

Guide element

Groove ring max. 1 Nm max. 5 Nm

Actuator cover

O-ring

Spindle extension

Figure 7: Installation of the switch spindle (2), series 21xx

NOTE!

Improper installation may damage the groove ring in the guide element.

The groove ring is already be pre-assembled in the guide element and must be “locked into position” in the undercut.

▶ When installing the switch spindle, do not damage the groove ring.

→ Push the switch spindle through the guide element.

NOTE!

Screw locking paint may contaminate the groove ring.

▶ Do not apply any screw locking paint to the switch spindle.

→ To secure the switch spindle, apply some screw locking paint (Loctite 290) in the tapped bore of the spindle extension in the actuator.

→ Check that the O-ring is correctly positioned.

→ Screw the guide element to the actuator cover (maximum torque: 5 Nm).

→ Screw switch spindle onto the spindle extension. To do this, there is a slot on the upper side

(maximum torque: 1 Nm).

→ Push puck onto the switch spindle and lock into position.

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Type 8695

Installation

2. Install sealing rings

→ Pull the form seal onto the actuator cover (smaller diameter points upwards).

→ Check that the O-rings are correctly positioned in the pilot air ports.

When the control head is being installed, the collets of the pilot air ports must not be fitted to the actuator.

Pilot air ports

Caution:

Collets must not be fitted !

Form seal

Installation of the form seal

Figure 8: Installation of the sealing rings english

Type 8695

Installation

3. Install control head

NOTE!

Damaged printed circuit board or malfunction.

▶ Ensure that the puck is situated flat on the guide rail.

→ Align the puck and the control head until

1. the puck can be inserted into the guide rail of the control head and

2. the connection pieces of the control head can be inserted into the pilot air ports of the actuator.

Connection pieces

Guide rail

Puck

Guide rail

Puck

Figure 9: Aligning the puck and the connection pieces english

Connection pieces

Pilot air ports

(actuator)

Type 8695

Installation

→ Push the control head, without turning it, onto the actuator until no gap is visible on the form seal.

NOTE!

Too high torque when screwing in the fastening screw does not ensure degree of protection IP65 /

IP67.

▶ The fastening screws may be tightened to a maximum torque of 1.5 Nm only.

→ Attach the control head to the actuator using the two side fastening screws. In doing so, tighten the screws only hand-tight (maximum torque: 1.5 Nm).

Connection pieces

Pilot air ports

(actuator)

Figure 10: Installation of control head

Fastening screws max. 1.5 Nm english

Type 8695

Installation

7.3 Installation of the control head Type 8695 on process valves of series 20xx (Classic)

Procedure:

1. Install switch spindle

Transparent cap

Position indicator

Actuator

Figure 11: Installation of the switch spindle (1), series 20xx

→ Unscrew the transparent cap on the actuator.

→ Using a hexagon socket key, unscrew the orange/yellow position indicator from the inside of the actuator.

Puck

Switch spindle

Guide element

O-ring

Plastic part

(of the switch spindle)

Spindle (actuator)

Figure 12: Installation of the switch spindle (2), series 20xx

→ Press the O-ring downwards into the cover of the actuator.

→ Manually screw the switch spindle (and the plugged-on guide element) together with the plastic part onto the spindle of the actuator, but do not tighten spindle yet.

→ Tighten the guide element with a face wrench 2) into the actuator cover (maximum torque: 8.0 Nm).

→ Tighten the switch spindle on the spindle of the actuator. To do this, there is a slot on the upper side

(maximum torque: 1.0 Nm).

→ Push the puck onto the switch spindle until it engages.

22 2) journal Ø: 3 mm; journal gap: 23.5 mm english

Type 8695

Installation

2. Install control head

Guide rail

Puck

Guide rail

Puck

Figure 13: Aligning the puck, series 20xx

NOTE!

Damaged printed circuit board or malfunction.

▶ Ensure that the puck is situated flat on the guide rail.

→ Push the control head onto the actuator. The puck must be aligned in such a way that it is inserted into the guide rail of the control head.

→ Press the control head all the way down as far as the actuator and turn it into the required position.

Ensure that the pneumatic connections of the control head and those of the valve actuator are situated

preferably vertically one above the other (see “Figure 14: Installing the control head, series 20xx”).

If they are positioned differently, longer hoses may be required other than those supplied in the accessory kit.

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Type 8695

Installation

Fastening screws maximum 1.5 Nm

Figure 14: Installing the control head, series 20xx

NOTE!

Too high torque when screwing in the fastening screw does not ensure degree of protection IP65 /

IP67.

▶ The fastening screws may be tightened to a maximum torque of 1.5 Nm only.

→ Attach the control head to the actuator using the two side fastening screws. In doing so, tighten the fastening screws hand-tight only (maximum torque: 1.5 Nm).

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Type 8695

Installation

3. Install pneumatic connection between control head and actuator

Pilot air outlet 2

Upper pilot air port

Lower pilot air port

Figure 15: Installing the pneumatic connection between control head and actuator, series 20xx

→ Screw the plug-in hose connectors onto the control head and the actuator.

→ Using the hoses supplied in the accessory kit, make the pneumatic connection between the control head and

actuator with the following “Table 1: Pneumatic connection to actuator CFA and CFB” or “Table 2: Pneumatic connection to actuator CFI”.

NOTE!

Damage or malfunction due to ingress of dirt and moisture.

▶ To comply with degree of protection IP65 / IP67, connect the pilot air outlet not required to the free pilot air port of the actuator or seal with a plug.

(only for CFA or CFB) which is

“In rest position” means that the pilot valves of the control head Type 8695 are isolated or not actuated.

Control function A (CFA)

Process valve closed in rest position (by spring force)

Control head Pilot air outlet

Actuator

Upper pilot air port

Lower pilot air port

Control function B (CFB)

Process valve open in rest position (by spring force)

Control head Pilot air outlet

Actuator

Table 1:

Upper pilot air port

Lower pilot air port

Pneumatic connection to actuator CFA and CFB or or

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Type 8695

Installation

Control function I (CFI)

Process valve closed in rest position

Control head Pilot air outlet

Actuator

Upper pilot air port

Lower pilot air port

Process valve open in rest position

Control head Pilot air outlet

Actuator

Table 2:

Upper pilot air port

Lower pilot air port

Pneumatic connection to actuator CFI

If the ambient air is humid, a hose can be connected between pilot air outlet 2

of the control head and the unconnected pilot air port of the actuator for control function A or control function B. As a result, the spring chamber of the actuator is supplied with dry air from the vent duct of the control head.

7.4 Rotating the actuator module on process valves of series 2100, 2101, 2000 and 2012

The actuator module (control head and actuator) can be rotated for globe valves and angle-seat valves belonging to series 2100, 2101, 2000 and 2012 only.

The process valve must be in the open position for alignment of the actuator module.

The position of the ports can be aligned steplessly by rotating the actuator module (control head and actuator) through 360°.

Series 2100 and 2101:

Only the entire actuator module can be rotated. The control head cannot be rotated contrary to the actuator.

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Type 8695

Installation

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Procedure:

→ Clamp valve body in a holding device (only required if the process valve has not yet been installed).

→ Control function A: Open process valve.

Actuator module

Hexagon

Nipple

Hexagon

Nipple

Series 2100 and 2101 Series 2000 and 2012

Figure 16: Rotating the actuator module

→ Using a suitable open-end wrench, counter the wrench flat on the pipe.

→ Place suitable open-end wrench on the hexagon of the actuator.

WARNING!

Risk of injury from discharge of medium and pressure.

If the direction of rotation is wrong, the body interface may become detached.

▶

Rotate the actuator module counter-clockwise only (see “Figure 17”).

→ Rotate counter-clockwise (as seen from below) to bring the actuator module into the required position.

Open-end wrench

Figure 17: Rotating with open-end wrench

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Type 8695

Installation

7.5 Rotating the control head for process valves belonging to series 20xx

If the connecting cables or hoses cannot be fitted properly following installation of the process valve, the control head can be rotated contrary to the actuator.

Fastening screw (2x)

Pneumatic connection

Control head

Actuator

Figure 18: Rotating the control head, series 20xx

Procedure

→ Loosen the pneumatic connection between the control head and the actuator.

→ Loosen the fastening screws countersunk in the side of the body (hexagon socket wrench size 2.5).

→ Rotate the control head into the required position.

NOTE!

Too high torque when screwing in the fastening screw does not ensure degree of protection IP65 /

IP67.

▶ The fastening screws may be tightened to a maximum torque of 1.5 Nm only.

→ Tighten the fastening screws hand-tight only (maximum torque: 1.5 Nm).

→ Re-attach the pneumatic connections between the control head and the actuator. If required, use longer hoses.

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Type 8695

Installation

7.6 Manual actuation of the actuator via pilot valve

The actuator can be moved without a power supply from the rest position to its end position and back again, when the control air is connected.

To do this, the pilot valve must be actuated with a screwdriver.

NOTE!

The hand lever may be damaged if it is simultaneously pressed and turned.

▶ Do not press the hand lever when turning it.

Pilot valve non activated

(normal position)

Hand lever to the left

Hand lever

Pilot valve activated

Hand lever to the right

Figure 19: Pilot valve for aerate and deaerate the actuator

Move actuator to end position

→ Turn the hand lever to the right using a screwdriver.

Note: Do not press the hand lever when turning it

Move actuator back to the rest position

→ Turn the hand lever to the left using a screwdriver.

Note: Do not press the hand lever when turning it

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Type 8695

Pneumatic installation

8 PNEUMATIC INSTALLATION

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper installation.

▶ Installation may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following installation, ensure a controlled restart.

Procedure:

→ Connect the control medium to the pilot air port (1)

(3 – 7 bar; instrument air, free of oil, water and dust).

→ Attach the exhaust airline or a silencer to the exhaust air port (3).

Important information for the problem-free functioning of the device:

▶ The installation must not cause back pressure to build up.

▶ Select a hose for the connection with an adequate cross-section.

▶ The exhaust air line must be designed in such a way that no water or other liquid can get into the device through the exhaust air port.

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Type 8695

Pneumatic installation

Pilot air port

(label: 1)

Exhaust air port

(label: 3)

Figure 20: Pneumatic connection

Caution: (Air exhaust concept) :

In compliance with degree of protection IP67, an air exhaust line must be installed in the dry area.

Keep the adjacent supply pressure always at least 0.5 – 1 bar above the pressure which is required to move the actuator to its end position.

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Type 8695

Electrical installation 24 V DC

9 ELECTRICAL INSTALLATION 24 V DC

The kind of connection is used for the electrical bonding of the control head:

• Multi-pole with circular plug-in connector M12 x 1, 8-pole

9.1 Safety instructions

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper installation.

▶ Installation may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following installation, ensure a controlled restart.

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Type 8695

Electrical installation 24 V DC

9.2 Electrical installation

Configuration circular plug (M12 x 1, 8-pole):

Figure 21: Circular plug M12 x 1, 8-pole

Wire color 3) Designation white limit switch top brown limit switch bottom

Configuration

IN 1 (=Top)

IN 2 (=Bot)

4 green yellow grey

Supply voltage

Supply voltage +

Valve control unit +

GND

24 V DC

Valve +

Table 3: pink Valve control unit -

Valve not used

Connection with circular plug-in connector not used

→ Connect the control head according to the table.

External circuit / signal level

+ 24 V

100K

{

IN 1

IN 2

GND

24 V

GND

When the supply voltage is applied, the control head is operating.

→

To read in the end positions of the valve, start the teach function (see “9.3 Teach function (calibrating the end position)” ).

The indicated colors refer to the connecting cable available as an accessory (919061).

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Type 8695

Electrical installation 24 V DC

9.3 Teach function (calibrating the end position)

The teach function can be used to automatically determine and read in the end positions of the valve.

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

Necessary requirements:

Before you can actuate the teach function, you must

• mount the control head on the actuator,

• connect the supply voltage and

• connect the compressed-air supply.

DANGER!

Danger due to the valve position changing when the teach function is running.

When the teach function is running under operating pressure, there is an acute risk of injury.

▶ Never run the teach function while a process is running.

▶ Secure system from unintentional activation.

Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open the control head: turning the transparent cap anti-clockwise.

Transparent cap

Body casing

Connection housing

Actuator

Figure 22: Open control head english

Type 8695

Electrical installation 24 V DC

→ The key in recess for actuating the Teach function keep pressed for approximately 5 seconds.

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 4) ).

Key in recess for actuating the teach function (keep pressed for approximately 5 seconds)

Chronological description of the teach function:

• the bottom position is read in internally

• the pilot valve switches

• the actuator moves automatically to the top position

• the top position is read in internally

• the pilot valve is turned off

• the actuator moves back to the home position

Figure 23: Teach function

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

Electrical installation 24 V DC

9.4 Display and control elements 24 V DC

End position LED green

Jumper for assignment of end position LEDs

End position LED yellow Status LED yellow

Valve LED yellow (pilot valve)

Figure 24: Description LED and Jumpers - 24 V DC

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Transparent cap

Body casing

Connection housing

Actuator

Figure 25: Open control head

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

9.4.1 Status LED yellow

LED yellow flashing flickers

Table 4:

Teach function is running

Puck not available

→ Insert puck

Status LED yellow - 24 V DC

9.4.2 Valve LED yellow

The yellow LED (valve) indicates whether the pilot valve is actuated (LED is lit yellow).

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Type 8695

Electrical installation 24 V DC

9.4.3 End position LED green and yellow

Factory setting:

Color green LED on

Device status

End position bottom yellow LED on

Table 5:

End position top

Assignment of end position LEDs - 24 V DC

9.4.4 Jumper function

You can set the color assignment of the end positions with the jumpers. You can indicate for each color whether it applies to the Top (end position top) or Bot (end position bottom).

9.4.5 Change assignment of the end position LEDs

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open control head: turn the transparent cap anti-clockwise.

Transparent cap

Body casing

Connection housing

Actuator

Figure 26: Open control head

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Type 8695

Electrical installation 24 V DC

→ Using the jumpers, assign the required color to the end position LEDs.

End position LED green

Jumper for assignment of end position LEDs

End position LED yellow ye gn

Top Bot

Bot Top ye gn ye gn

Top Bot ye gn

Bot Top

Jumper setting 1:

In the end position top (Top), the yellow LED is lit; in the end position bottom (Bot), the green LED is lit.

Jumper setting 2:

In the end position top (Top), the green LED is lit; in the end position bottom (Bot), the yellow LED is lit.

Figure 27: Description end position LEDs and Jumper - 24 V DC

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 5) ).

Transparent cap

Body casing

Connection housing

Actuator

Figure 28: Close control head

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

AS-Interface installation

10 AS-INTERFACE INSTALLATION

10.1 AS-Interface connection

AS-Interface (Actuator Sensor Interface) is a field bus system which is used primarily for networking binary sensors and actuators (slaves) with a higher-level control (master).

Bus line

Unshielded two-wire line (AS-Interface line as AS-Interface cable harness) along which both information (data) and energy (supply voltage for the actuators and sensors) are transmitted.

Network topology

Freely selectable within wide limits, i.e. star, tree and line networks are possible. Further details are described in the

AS-Interface specification (A/B slave model conforms to the version 3.0 specification).

10.2 Technical data for AS-Interface PCBs

Supply: via AS-Interface (24 V + 20 % / -10 %)

Outputs: 1 Valve Y1, max. 1 W, Power reduction after approx. 100 ms with integrated Watch-Dog function

Certification: Certificate no. 87301 after version 3.0

10.3 Programming data

I/O configuration

ID code

Extended ID code 1

Extended ID code 2

Profile

Table 6: Programming data

Bit configuration

Data bit

Input

Output

0 Top not reached

1 Top reached

–

B hex

A hex (see below for bit configuration)

7 hex

E hex

S-B.A.E

0 Bot not reached

1 Bot reached

–

– not used

Parameter bit P3

Output not used

Table 7: Bit configuration

P2 not used

P1 not used

–

0 Pilot valve OFF

1 Pilot valve ON

“0“ START Teach function

“1“ STOP Teach function

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AS-Interface installation

10.4 Electrical installation AS-Interface

10.4.1 Safety instructions

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper installation.

▶ Installation may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following installation, ensure a controlled restart.

10.4.2 Connection with circular plug-in connector M12 x 1, 4-pole, male

→ Connect the control head according to the table.

Bus connection (circular plug M12 x 1, 4-pole, male)

4 3

Bus -

Figure 29: Circular plug M12 x1, 4-pole

Bus +

1 2

Table 8:

Designation

Bus +

Bus –

Configuration

AS-Interface bus line + not used

AS-Interface bus line not used

Pin assignment of circular plug-in connector for AS-Interface english

Type 8695

AS-Interface installation

10.4.3 Connection with multi-pole cable and ribbon cable terminal

As an alternative to the bus connection model with 4-pole circular plug, there is the control head with multi-pole cable

(M12 circular plug) and ribbon cable terminal. The wiring diagram of the circular plug corresponds to the bus con-

nection of the M12 4-pole circular plug and can easily be connected to the ribbon cable terminal (see “Figure 31”).

Figure 30: Control head 8695 with multi-pole cable and ribbon cable terminal

Handling the ribbon cable terminal

The multi-pole cable features a ribbon cable terminal - with M12 plug-in connector branch circuit - for AS-Interface cable harness. The ribbon cable terminal contacts the AS-Interface cable harness by means of penetration technology which allows installation by “clipping in” the AS-Interface cable harness without cutting and without removing insulation.

Screws

M12 plug-in connector branch circuit

Figure 31: Ribbon cable terminal

Work steps:

→ Open the ribbon cable terminal

(loosen screws and remove cover)

→ Insert cable harness conclusively

→ Close ribbon cable terminal again

→ Tighten screws

Slightly undo thread-forming screws

(approx. 3/4 turn to the left) and position them on the existing tapped bore and screw in.

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Type 8695

AS-Interface installation

10.5 Teach function (calibrating the end position)

The teach function can be used to automatically determine and read in the end positions of the valve.

For the bus variant AS-Interface, the teach function can also be started via the bus protocol.

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

Necessary requirements:

Before you can actuate the teach function, you must

• mount the control head on the actuator,

• connect the supply voltage and

• connect the compressed-air supply.

DANGER!

Danger due to the valve position changing when the teach function is running.

When the teach function is running under operating pressure, there is an acute risk of injury.

▶ Never run the teach function while a process is running.

▶ Secure system from unintentional activation.

Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open the control head: turning the transparent cap anti-clockwise.

Transparent cap

Body casing

Connection housing

Actuator

Figure 32: Open control head english

Type 8695

AS-Interface installation

→ The key in recess for actuating the teach function keep pressed for approximately 5 seconds.

Key in recess for actuating the teach function (keep pressed for approximately 5 seconds)

Chronological description of the teach function:

• the bottom position is read in internally

• the pilot valve switches

• the actuator moves automatically to the top position

• the top position is read in internally

• the pilot valve is turned off

• the actuator moves back to the home position

Figure 33: Teach function

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 6) ).

Important:

When the teach function is activated the actuator cannot be actuated via the AS-Interface communication.

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

AS-Interface installation

10.6 Display and control elements AS-Interface

Bus LED red

Bus LED green

Status LED yellow

Valve LED yellow (pilot valve)

Figure 34: Description LED and Jumper - AS-Interface

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Transparent cap

Body casing

Connection housing

Actuator

Figure 35: Open control head

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

10.6.1 Status LED yellow

LED yellow flashing flickers

Table 9:

Teach function is running

Puck PCB or puck not available

→ Insert puck PCB or puck.

Status LED yellow - AS-Interface

10.6.2 Valve LED yellow

The yellow LED (valve) indicates whether the pilot valve is actuated (LED is lit yellow).

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Type 8695

AS-Interface installation

10.6.3 Bus LED red and green

The red and green LEDs (bus) indicate the bus status:

LED green off off on flashing off

Table 10:

LED red off on off on

POWER OFF

No data traffic (expired Watch Dog at slave address does not equal 0)

Slave address equals 0 flashing Sensor supply overloaded or external reset

LED bus status - AS-Interface

10.6.4 End position LEDs

The end position is displayed optically by colored LEDs.

End position LED green

Jumper for assignment of end position LEDs

End position LED yellow

Figure 36: Description end position LEDs and Jumpers - AS-Interface

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Transparent cap

Body casing

Connection housing

Actuator

Figure 37: Open control head

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

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AS-Interface installation

Factory setting:

Color green LED on

Device status

End position bottom yellow LED off

Table 11:

End position top

Assignment of LEDs - AS-Interface

10.6.5 Jumper function

You can set the color assignment of the end positions with the jumpers.

You can indicate for each color whether it applies to the Top (end position top) or Bot (end position bottom).

10.6.6 Change assignment of the end position LEDs

End position

LED green ye

Top Bot ye gn

Bot Top gn

Jumper setting 1:

In the end position top

(Top), the yellow LED is lit; in the end position bottom (Bot), the green

LED is lit.

Jumper for assignment of end position LEDs

End position

LED yellow ye

Top Bot ye gn

Bot Top gn

Jumper setting 2:

In the end position top

(Top), the green LED is lit; in the end position bottom

(Bot), the yellow LED is lit.

Figure 38: Assignment of the end position LED - AS-Interface

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open the control head: turning the transparent cap anti-clockwise.

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Type 8695

AS-Interface installation

Transparent cap

Body casing

Connection housing

Actuator

Figure 39: Open control head

→

Using the jumpers, assign the required color to the LEDs (see “Figure 38: Assignment of the end position

LED - AS-Interface”).

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 7) ).

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

DeviceNet installation

11 DEVICENET INSTALLATION

11.1 Definition

• The DeviceNet is a field bus system which is based on the CAN protocol (Controller Area Network). It enables actuators and sensors (slaves) to be networked with higher-level controllers (master).

• The control head in the DeviceNet is a slave device according to the Predefined Master/Slave Connection Set stipulated in the DeviceNet specification. Polled I/O, Bit Strobed I/O and Change of State (COS) are supported as an I/O connection variant.

• With DeviceNet it is necessary to differentiate between cyclical or event-driven high-priority process messages

(I/O Messages) and acyclical low-priority management messages (Explicit Messages).

• The protocol process conforms to the DeviceNet specification Release 2.0.

11.2 Technical data

EDS file BUE8695.EDS

Icons BUE8695.ICO

Baudrate 125 kbit/s, 250 kbit/s, 500 kbit/s (via DIP switches);

Factory setting: 125 kbit/s

Address 0 – 63 (via DIP switches);

Factory setting: 63

Process data 1 static input assembly (input: from the control head 8695 to the DeviceNet Master/Scanner)

1 static output assembly

11.3 Maximum line lengths

The maximum total line length (sum of trunk lines and drop lines) of a network depends on the baudrate.

11.3.1 Total line length according to DeviceNet specification

Baudrate

125 kbaud

250 kbaud

500 kbaud

Table 12:

Maximum total line length 8)

Thick cable

500 m

250 m

100 m

Total line length

Thin cable

100 m for all baudrates

According to DeviceNet specification.

If a different cable type is used, lower maximum values apply.

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Type 8695

DeviceNet installation

11.3.2 Drop line length

Baudrate

Length of the drop lines

Maximum length

125 kbaud

250 kbaud

500 kbaud

Table 13:

6 m for all baudrates

Drop line length

Maximum total length in the network

156 m

78 m

39 m

11.4 Safety setting if the bus fails

If the bus fails, the pilot valve is switched to a programmable safety setting (default: pilot valve isolated). For con-

figuration data see chapter entitled “11.9 Configuring the control head”.

11.5 Interfaces

Bus + supply

Control head 8695

DeviceNet

Bus

11.6 Electrical connection DeviceNet

The bus line is a 4-core cable with additional shielding which must conform to the DeviceNet specification.

The cable transmits both information (data) and energy (supply voltage for low-power actuators and sensors).

11.6.1 Safety instructions

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper installation.

▶ Installation may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following installation, ensure a controlled restart.

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DeviceNet installation

11.6.2 Display and control elements DeviceNet

RS232

End position LED green

Device status LED (two-colored: red/green)

End position LED yellow

DIP switches for bus address and baudrate

Bus LED (two-colored: red/green)

Valve LED yellow (pilot valve)

Status LED yellow

Figure 40: Display and control elements - DeviceNet

11.6.3 Bus connection (circular connector M12 x 1, 5-pole, male)

The control head features a 5-pole micro-style circular connector.

The following configuration conforms to the DeviceNet specification.

Signal

Table 14:

Shielding

V +

V –

Pin assignment circular plug-in connector DeviceNet

CAN_H

CAN_L

Data lines

Pin 4: CAN_H white

Pin 5: CAN_L blue

Pin 1: Drain

(Shield)

Pin 3: V– black

Pin 2: V+ red

Figure 41: View of plug from the front onto the pins, the soldered connections are behind

Supply voltage

11 ... 25 V DC max. power 3 W, if valve is switched

11.7 Terminating circuit for DeviceNet systems

When installing a DeviceNet system, ensure that the terminating circuit of the data lines is correct.

The circuit prevents the occurrence of interference caused by signals reflected onto the data lines.

The trunk line must be terminated at both ends with resistors of 120 Ω each and 1/4 W power loss

(see “Figure 42: Network topology - DeviceNet”).

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Type 8695

DeviceNet installation

11.8 Network topology of a DeviceNet system

Line with a trunk line and several drop lines.

Trunk lines and drop lines consist of identical material (see “Figure 42”).

Trunk line

DeviceNet cable

V +

V –

CAN_H

CAN_L

Terminating resistor

120 Ω

¼ W

T01

Drop lines

DeviceNet cable, max. 6 m long

Terminating resistor

120 Ω

¼ W

Subscriber 1 (node 1)

Figure 42: Network topology - DeviceNet

Subscriber n (node n)

11.9 Configuring the control head

11.9.1 DIP switches

1 2 3 4 5 6 7 8

OFF

DIP switches for bus address and baudrate

Figure 43: DIP switches - DeviceNet

8 DIP switches are available for configuration:

• DIP switches 1 to 6 for the DeviceNet address

• DIP switches 7 to 8 for the baudrate

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

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Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open the control head: turning the transparent cap anti-clockwise.

Transparent cap

Body casing

Connection housing

Actuator

Figure 44: Open control head

→ Set the DIP switches according to the following tables.

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 9) ).

Settings of the DeviceNet address

MAC ID - Medium Access Control Identifier:

[DIP 1=off=0 / DIP 1=on=1 / MAC ID=DIP 1*2 0 +DIP 2*2 1 +...+DIP 6*2 5 ]

DIP 1

[20=1] off on off

...

off on

Table 15:

DIP 2

[21=2] off off on

...

on on

DIP 3

[22=4] off off off

...

on on

Settings of the DeviceNet address

DIP 4

[23=8] off off off

...

on on

DIP 5

[24=16] off off off

...

on on

DIP 6

[25=32] off off off

...

on on

MAC ID

...

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

DeviceNet installation

Setting the baudrate

Adjusting the control head to the baudrate of the network.

DIP 7 off on off on

Table 16:

DIP 8 off off on on

Setting the baudrate

Baudrate

125 kbaud

250 kbaud

500 kbaud not permitted

Please note: If the settings are changed by actuating the DIP switches, this change will not take effect until the device is restarted.

For a restart

• briefly disconnect the control head from the power supply and reconnect or

• switch the power supply off/on or

• transmit an appropriate reset message.

11.10 Configuration of the process data

To transmit process data via an I/O connection, 1 static input and 1 static output assembly can be selected. These assemblies contain selected attributes combined into one object so that process data can be transmitted collectively via an I/O connection.

Process data can be accessed

• cyclically in the connection variants “Polled I/O” and “Bitstrobed I/O”, with “Change of state”, if input values change, or

• acyclically via Explicit Messages.

The access path for acyclical access is: class 4

attribute

With the Get_Attribute_Single service the input data can be accessed acyclically for reading.

With the Set_Attribute_Single service the output data can be accessed acyclically for writing.

1 data byte for inputs:

(sensors or initiators)

Bit

Bit 0

Bit 1

Sensor

End position

Value assignment

0 Bot not reached

1 Bot reached

0 Top not reached

1 Top reached

Bit 2... not used

Bit 7

Table 17:

0 always data byte for inputs

1 data byte for outputs:

(actuators or valves)

Bit

Bit 0

Solenoid valve

Bit 1... not used

Bit 7

Table 18:

Value assignment

0 Pilot valve OFF

1 Pilot valve ON

0 always data byte for outputs

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DeviceNet installation

11.11 Configuration of the safety position of pilot valves for bus error

If a bus fault occurs, the bus LED may assume the “Green flashing”, “Red flashing” or “Red” status.

(For a description see “Status of the bus LED”, page 59)

The valve safety position and safety module attributes can be used to configure the pilot valve in the event of a bus fault.

If a bus fault occurs, the configuration data of the pilot valves can be accessed acyclically via Explicit Messages.

• The Get_Attribute_Single service stands for a read access of the configuration data.

• The Set_Attribute_Single service stands for a write access of the configuration data.

1 data byte for safety mode:

(Attribute address: class 150, instance 1, attributes 7)

Bit Mode Value assignment

Bit 0

Characteristics in event of bus fault

0 Output safety position

1 Retain last valve position

Bit

1...7

Table 19: not used 0 always data byte for safety mode

1 data byte for valve safety position:

(Attribute address: class 150, instance 1, attributes 6)

Bit Solenoid valve

Bit 0

(Pilot valve 1)

Bit 1... not used

Bit 7

Table 20:

Value assignment

0 Pilot valve 1 OFF

1 Pilot valve 1 ON

0 always data byte for valve safety position

11.12 Teach function (calibrating the end position)

The teach function can be used to automatically determine and read in the end positions of the actuator.

For the bus variant DeviceNet, the teach function can also be started via the bus protocol as well as the

communicator software (see “11.12.1 Starting the teach function”).

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

Necessary requirements:

Before you can actuate the each function, you must

• mount the control head on the actuator,

• connect the supply voltage and

• connect the compressed-air supply.

english

Type 8695

DeviceNet installation

Key in recess for actuating the teach function (keep pressed for approximately 5 seconds

Chronological description of the teach function:

• the bottom position is read in internally

• the pilot valve switches

• the actuator moves automatically to the top position

• the top position is read in internally

• the pilot valve is turned off

• the actuator moves back to the home position

Status LED: flashes yellow when teach function is running

Figure 45: Teach function

DANGER!

Danger due to the valve position changing when the teach function is running.

When the teach function is running under operating pressure, there is an acute risk of injury.

▶ Never run the teach function while a process is running.

▶ Secure system from unintentional activation.

Procedure :

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

→ Open the control head: turning the transparent cap anti-clockwise.

Transparent cap

Body casing

Connection housing

Actuator

Figure 46: Open control head

→ The key in recess for actuating the teach function keep pressed for approximately 5 seconds.

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Type 8695

DeviceNet installation

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way.

→ Close the device (assembly tool: 674078 10) ).

Transparent cap

Body casing

Connection housing

Actuator

Figure 47: Control head

When the teach function is activated the actuator cannot be actuated via the DeviceNet communication.

10)

The assembly tool (674078) is available from your Bürkert sales office.

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Type 8695

DeviceNet installation

11.12.1 Starting the teach function

DANGER!

Danger due to the valve position changing when the teach function is running.

When the teach function is running under operating pressure, there is an acute risk of injury.

▶ Never run the teach function while a process is running.

▶ Secure system from unintentional activation.

The teach function can be started and read out via the “ Teach function ” attribute.

User 2 can receive information through the read out:

• firstly he is informed whether the teach function is completed.

• after the teach function is completed, the result of the function can be read out.

Access occurs acyclically via Explicit Messages with the Set_Attribute_Single (write access) service and the

Get_Attribute_Single service (read access).

1 data byte for teach function:

(Attribute address: class 150, instance 1, attributes 8)

Set_Attribute_Single:

Bit

Bit 0

Bit 1

Bit 2...7

Table 21:

Mode

Teach function not used not used

Set_Attribute_Single

Value assignment

0 Start teach function

– (only read access permitted)

0 always

Get_Attribute_Single:

Bit Mode

Bit 0 Teach function

Bit 1

Bit 2...7

Table 22:

Result of teach function

(available after end of teach function) not used

Get_Attribute_Single

Value assignment

0 Teach function is running

1 Teach function is completed

0 Teach function successfully completed

1 Teach function defective

0 always english

Type 8695

DeviceNet installation

11.13 Display elements DeviceNet

End position LED green

Device status LED (two-colored: red/green)

End position LED yellow

Status LED (yellow)

Bus LED (two-colored: red/green)

Valve LED yellow (pilot valve)

Figure 48: Display elements - DeviceNet

NOTE!

Breakage of the pneumatic connection pieces due to rotational impact.

▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the connection housing.

Transparent cap

Body casing

Connection housing

Actuator

Figure 49: Open control head

NOTE!

Damage or malfunction due to penetration of dirt and humidity.

▶ To observe degree of protection IP65 / IP67, screw the transparent cap in all the way. english

Type 8695

DeviceNet installation

11.13.1 Device status LED and bus LED

Function test of the device status LED and bus LED

When voltage has been applied (connection of the network line), the following function test is run for the twocolored device status LED and bus LED:

• LED is briefly lit green (approx. 1/4 sec)

• LED is briefly lit red (approx. 1/4 sec)

• LED off

Then another function test is run during which the LEDs light up briefly

When the test is complete, the status LEDs indicate the device statuses which are described in the following table.

Status of the bus LED

LED

Off

Green

Flashes green

Flashes red

Red

Table 23:

Device status

No power supply / not online

Explanation

• Device is not supplied with voltage

• Device has still not ended Duplicate

MAC ID Test (test lasts approx. 2 sec)

• Device cannot end Duplicate MAC ID

Test.

Troubleshooting

• Connect other devices, if the device is the only network subscriber,

• replace device

• Check baud rate

• check bus connection

Online, connection to master exists

Online, without connection to master

• Normal operating status with established connection to the master

• Normal operating status without established connection to the master

Connection time-Out

• One or more I/O connections are in

Time-Out state

• New connection establishment by master to ensure that the I/O data is transmitted cyclically.

• Another device with the same MAC

ID address is in the circuit

Critical fault

Status of the bus LED

• No bus connection due to communication problems

• Check baud rate

• If required, replace device

Status of the device status LED

LED

Off

Green

Table 24:

Device status

No supply

Device is working

Explanation

• Device is not supplied with voltage

• Normal operating status

Status of the device status LED

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DeviceNet installation

11.13.2 End position LEDs

The end positions are displayed optically by colored LEDs.

The following functions are shown as standard

Color Device status green end position LED on End position bottom yellow end position LED on

Table 25:

End position top

Assignment of the end position LEDs - DeviceNet

End position LED green

Device status LED (two-colored: red/green)

End position LED yellow

Status LED (yellow)

Bus LED (two-colored: red/green)

Valve LED yellow (pilot valve)

Figure 50: Display elements - DeviceNet

11.13.3 Status LED yellow

LED yellow flashing flickers

Table 26:

Teach function is running

Puck not available

→ Insert puck

Status LED yellow - DeviceNet

11.13.4 Valve LED yellow

The yellow valve LED indicates whether the pilot valve is actuated (LED is lit yellow).

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Type 8695

Safety positions

12 SAFETY POSITIONS

Safety positions after failure of the electrical or pneumatic auxiliary power:

Actuator system Designation

Safety positions after failure of the auxiliary power electrical pneumatic up down single-acting

Control function A down down up down single-acting

Control function B up up up down

Table 27: Safety Positions double-acting

Control function B down not defined

13 MAINTENANCE

The control head Type 8695 is maintenance-free when operated according to the instructions in this manual.

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Type 8695

Disassembly

14 DISASSEMBLY

14.1 Safety instructions

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

WARNING!

Risk of injury from improper disassembly.

▶ Disassembly may be carried out by authorized technicians only and with the appropriate tools.

Risk of injury from unintentional activation of the system and an uncontrolled restart.

▶ Secure system from unintentional activation.

▶ Following disassembly, ensure a controlled restart.

14.2 Disassembly the control head

Procedure:

1. Pneumatic connection

DANGER!

Risk of injury from high pressure in the equipment/device.

▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

→ Loosen the pneumatic connection.

→ 20xx series:

Loosen the pneumatic connection to the actuator.

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Type 8695

Disassembly

2. Electrical connection

DANGER!

Risk of electric shock.

▶ Before working on equipment or device, switch off the power supply and secure to prevent reactivation.

▶ Observe applicable accident prevention and safety regulations for electrical equipment.

→ Loosen the circular plug-in connector.

3. Mechanical connection

→ Loosen the fastening screws.

→ Remove the control head upwards.

Control head

Electrical connection circular plug-in connector

Pneumatic connections

Fastening screws (2x)

Pneumatic connection to the actuator

Actuator

Series 20xx

(Classic)

Series 21xx

(Element)

Figure 51: Disassembly the control head

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Type 8695

Accessories

15 ACCESSORIES

Designation

Connection cable M12 x 1, 8-pole

Assembly tool

USB adapter for connection to a PC in conjunction with an extension cable

Communicator

Table 28: Accessories

Order no.

919061

674078

227093

Information at www.burkert.com

15.1 Communications software

The PC operating program “Communicator” is designed for communication with the devices Type 8695 with bus control via DeviceNet. Devices constructed since April 2014 support the full range of functions. If you have any questions regarding compatibility, please contact the Bürkert Sales Center.

A detailed description and precise schedule of the procedure for the installation and operation of the software can be found in the associated documentation.