Burkert 8695 User Manual [en, de, fr]
Type 8695
Control Head
Steuerkopf
Tête de commande
Operating Instructions
Bedienungsanleitung
Manuel d‘ utilisation
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2008 - 2013 Bürkert Werke GmbH
Operating Instructions 1312/05_EU-ML_00805569 / Original DE
Type 8695
Control head Type 8695
Table of ConTenTs
1 OPERATING INSTRUCTIONS ........................................................................................................................................................7
1.1 Symbols ......................................................................................................................................................................................7
1.2 Definition of term / abbreviation ...................................................................................................................................7
2 AUTHORIZED USE .............................................................................................................................................................................8
2.1 Restrictions ...............................................................................................................................................................................8
3 BASIC SAFETY INSTRUCTIONS .................................................................................................................................................9
4 GENERAL INFORMATION .............................................................................................................................................................10
4.1 Contact address ..................................................................................................................................................................10
4.2 Warranty ...................................................................................................................................................................................10
4.3 Trademarks ............................................................................................................................................................................10
4.4 Information on the internet ............................................................................................................................................10
5 SYSTEM DESCRIPTION ................................................................................................................................................................11
5.1 Structure and function .....................................................................................................................................................11
5.1.1 Control head for integrated installation on 21xx series (Element) ..........................................11
5.1.2 Model for control of process valves belonging to the 20xx series (Classic) ........................12
6 TECHNICAL DATA .............................................................................................................................................................................13
6.1 Conformity ..............................................................................................................................................................................13
6.2 Standards ................................................................................................................................................................................13
6.3 Operating conditions ........................................................................................................................................................13
6.4 Mechanical data ...................................................................................................................................................................13
6.5 Type label ...............................................................................................................................................................................14
6.6 Pneumatic data ....................................................................................................................................................................14
6.7 Electrical data .......................................................................................................................................................................15
6.7.1 Electrical data without bus control 24 V DC ...............................................................................15
6.7.2 Electrical data with AS-Interface bus control ..............................................................................15
6.7.3 Electrical data with DeviceNet bus control ..................................................................................15
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Type 8695
Inhaltsverzeichnis
7 INSTALLATION ...................................................................................................................................................................................16
7.1 Safety instructions .............................................................................................................................................................16
7.2 Installation of the control head Type 8695 on process valves of series 21xx (Element) ............16
7.3 Installation of the control head Type 8695 on process valves of series 20xx (Classic) ..............21
7.4 Rotating the actuator module on process valves of series 2100, 2101, 2000 and 2012 .............25
7.5 Rotating the control head for process valves belonging to series 20xx ..............................................27
8 PNEUMATIC INSTALLATION .......................................................................................................................................................28
9 ELECTRICAL INSTALLATION 24 V DC ...................................................................................................................................30
9.1 Safety instructions .............................................................................................................................................................30
9.2 Electrical installation .........................................................................................................................................................31
9.3 Teach function (calibrating the end position) ......................................................................................................32
9.4 Display and control elements 24 V DC ...................................................................................................................34
9.4.1 Status LED yellow ..............................................................................................................................34
9.4.2 Valve LED yellow ................................................................................................................................34
9.4.3 End position LED green and yellow ...............................................................................................35
9.4.4 Jumper function ...................................................................................................................................35
9.4.5 Change assignment of the end position LEDs ............................................................................35
10 AS-INTERFACE INSTALLATION ................................................................................................................................................37
10.1 AS-Interface connection .................................................................................................................................................37
10.2 Technical data for AS-Interface PCBs .....................................................................................................................37
10.3 Programming data ..............................................................................................................................................................37
10.4 Electrical installation AS-Interface ............................................................................................................................38
10.4.1 Safety instructions ..............................................................................................................................38
10.4.2 Connection with circular plug-in connector M12 x 1, 4-pole, male .......................................38
10.4.3 Connection with multi-pole cable and ribbon cable terminal ...................................................39
10.5 Teach function (calibrating the end position) ......................................................................................................40
10.6 Display and control elements AS-Interface ..........................................................................................................42
10.6.1 Status LED yellow ..............................................................................................................................43
10.6.2 Valve LED yellow ................................................................................................................................43
10.6.3 Bus LED red and green ....................................................................................................................43
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Type 8695
10.6.4 End position LEDs..............................................................................................................................44
10.6.5 Jumper function ...................................................................................................................................44
10.6.6 Change assignment of the end position LEDs ............................................................................45
11 DEVICENET INSTALLATION ........................................................................................................................................................46
11.1 Definition .................................................................................................................................................................................46
11.2 Technical data .......................................................................................................................................................................46
11.3 Maximum line lengths ......................................................................................................................................................46
11.3.1 Total line length according to DeviceNet specification .............................................................46
11.3.2 Drop line length...................................................................................................................................47
11.4 Safety setting if the bus fails ........................................................................................................................................47
11.5 Interfaces ................................................................................................................................................................................47
11.6 Electrical connection DeviceNet .................................................................................................................................47
11.6.1 Safety instructions ..............................................................................................................................47
11.6.2 Display and control elements DeviceNet ...................................................................................... 48
11.6.3 Bus connection (circular connector M12 x 1, 5-pole, male) ....................................................48
11.7 Terminating circuit for DeviceNet systems ...........................................................................................................48
11.8 Network topology of a DeviceNet system .............................................................................................................49
11.9 Configuring the control head .......................................................................................................................................49
11.9.1 DIP switches ........................................................................................................................................49
11.10 Configuration of the process data .............................................................................................................................51
11.11 Configuration of the safety position of pilot valves for bus error .............................................................52
11.12 Teach function (calibrating the end position) ......................................................................................................52
11.12.1 Starting the teach function ...............................................................................................................55
11.13 Display elements DeviceNet .........................................................................................................................................56
11.13.1 Device status LED and bus LED ....................................................................................................57
11.13.2 End position LEDs..............................................................................................................................58
11.13.3 Status LED yellow ..............................................................................................................................58
11.13.4 Valve LED yellow ................................................................................................................................58
12 SAFETY POSITIONS .......................................................................................................................................................................59
13 MAINTENANCE ..................................................................................................................................................................................59
14 ACCESSORIES ..................................................................................................................................................................................59
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Type 8695
15 DISASSEMBLY ...................................................................................................................................................................................60
15.1 Safety instructions .............................................................................................................................................................60
15.2 Disassembly the control head .....................................................................................................................................60
16 PACKAGING AND TRANSPORT ...............................................................................................................................................62
17 STORAGE ..............................................................................................................................................................................................62
18 DISPOSAL ............................................................................................................................................................................................62
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Type 8695
Operating instructions
1 OPERATING INSTRUCTIONS
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.
▶ 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 reli-
able 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:
▶ 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.
▶ 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 pro-
cess 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: info@de.buerkert.com
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
Pilot air outlet 2
1
2
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Type 8695
Technical data
6 TECHNICAL DATA
6.1 Conformity
In accordance with the EC Declaration of conformity, the control head Type 8695 is compliant with the EC
Directives.
6.2 Standards
The applied standards on the basis of which compliance with the EC Directives is confirmed are listed in the EC
type examination certificate and/or the EC Declaration of Conformity.
6.3 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 mini-
mum value.
Ambient temperature see type label
Degree of protection IP65 / IP67 according to EN 60529
(only if cables, plugs and sockets have been connected correctly
and in compliance with the exhaust air concept in chapter “Procedure:”)
6.4 Mechanical data
Dimensions See data sheet
Body material exterior PPS, PC, VA
interior PA6; ABS
Sealing material exterior EPDM / FKM
Stroke range of valve spindle 21xx series (Element)
and 20xx series (Classic) AS-Interface 2 – 25 mm
24 V DC 2 – 35 mm
DeviceNet 2 – 35 mm
Third-party devices
(modified guide element
required) AS-Interface 2 – 34 mm
24 V DC 2 – 44 mm
DeviceNet 2 – 44 mm
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6.5 Type label
Example:
Type 8695
Technical data
Supply voltage / Control
Identification number
Figure 3: Type label (example)
Type
8695 24 V/DC
single act Pilot 0,6
Pmax 7 bar
Tamb 0°C - +55°C
S/N 001000
00185114
D-74653 Ingelfingen
W14UN
CE
Control function - Pilot valve
Max. operating pressure
Max. ambient temperature
Serial number - CE mark
Bar-code
6.6 Pneumatic data
Control medium neutral gases, air
Quality classes in accordance with DIN ISO 8573-1
Dust content Class 5 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 5 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)
N
(QNn - value according to definition for pressure drop from 7 to 6 bar absolute)
Connections 21xx (Element) Plug-in hose connector ∅ 6 mm / 1/4“
Socket connection G 1/8
20xx (Classic) Socket connection G 1/8
with M5 connection for connecting to the actuator
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Type 8695
Technical data
6.7 Electrical data
6.7.1 Electrical data without bus control 24 V DC
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)
6.7.2 Electrical data with AS-Interface bus control
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
6.7.3 Electrical data with DeviceNet bus control
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
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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)
Procedure:
1. Install switch spindle
Transparent cap
Pilot air ports
(plug-in hose connectors with collets or
threaded bushings)
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Actuator
Figure 4: 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).
→ For version with plug-in hose connector, remove the collets (white nozzles) from both pilot air ports (if
present).
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Type 8695
Installation
Puck
Switch spindle
Guide element
Groove ring
max. 1 Nm
max. 5 Nm
Actuator cover
O-ring
Spindle extension
Figure 5: 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 !
Figure 6: Installation of the sealing rings
Form seal
Installation of the form
seal
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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
Connection
pieces
Figure 7: Aligning the puck and the connection pieces
Pilot air ports
(actuator)
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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 0.5 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: 0.5 Nm).
Connection
pieces
Pilot air ports
(actuator)
Figure 8: Installation of control head
Fastening screws
max. 0.5 Nm
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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 9: 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 10: 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
1)
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.
1) journal Ø: 3 mm; journal gap: 23.5 mm
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2. Install control head
Type 8695
Installation
Guide rail
Puck
Guide rail
Puck
Figure 11: 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 12: 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 0.5 Nm
Figure 12: 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 0.5 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: 0.5 Nm).
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3. Install pneumatic connection between control head and actuator
Type 8695
Installation
Pilot air outlet 2
Pilot air outlet 2
1
2
Upper pilot air port
Lower pilot air port
Figure 13: 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 (only for CFA or CFB) which is
not required to the free pilot air port of the actuator or seal with a plug.
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“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
222
1
or
Lower pilot air port
Control function B (CFB)
Process valve open in rest position (by spring force)
Control head Pilot air outlet
Actuator
Upper pilot air port
222
1
or
Lower pilot air port
Table 1: Pneumatic connection to actuator CFA and CFB
222
222
1
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Type 8695
Installation
Control function I (CFI)
Process valve closed in rest position
Control head Pilot air outlet
222
1
Actuator
Upper pilot air port
Lower pilot air port
Process valve open in rest position
Control head Pilot air outlet
Actuator
Upper pilot air port
222
1
Lower pilot air port
Table 2: Pneumatic connection to actuator CFI
If the ambient air is humid, a hose can be connected between pilot air outlet 22 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
Hexagon
Nipple
Series 2100 and 2101
Figure 14: Rotating the actuator module
Series 2000 and 2012
Nipple
→ 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 15”).
→ Rotate counter-clockwise (as seen from below) to bring the actuator module into the required position.
Open-end wrench
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Figure 15: 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)
Control head
Pneumatic connection
Actuator
Figure 16: 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 0.5 Nm only.
→ Tighten the fastening screws hand-tight only (maximum torque: 0.5 Nm).
→ Re-attach the pneumatic connections between the control head and the actuator. If required, use longer
hoses.
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Type 8695
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 17: 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.
english
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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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