Burkert 8691 Control head User Manual
Burkert 8691 is an innovative control head offering advanced pneumatic and electrical capabilities for precise process valve control. With its integrated design, it seamlessly fits onto Burkert's 21xx series actuators, providing a compact and efficient solution. Additionally, it effortlessly integrates with 20xx series process valves, extending its versatility.
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Type 8691
Control Head
Quickstart
English
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2007 - 2021
Ouickstart 2107/09_EU-ML_00806079 / Original DE
Type 8691
Contents
1 QUICKSTART ........................................................................ 4
1.1 Definition of term, abbreviation ................................... 4
1.2 Symbols ....................................................................... 4
2 AUTHORIZED USE ............................................................... 5
3 BASIC SAFETY INSTRUCTIONS .......................................... 5
4 GENERAL INFORMATION .................................................... 6
4.1 Contact address .......................................................... 6
4.2 Warranty ...................................................................... 6
4.3 Information on the Internet .......................................... 6
5 SYSTEM DESCRIPTION ....................................................... 7
5.1 Structure and function ................................................. 7
5.2 Control head for integrated installation on the
21xx series .................................................................. 7
6 TECHNICAL DATA ................................................................. 8
6.1 Conformity ................................................................... 8
6.2 Standards .................................................................... 8
6.3 Licenses ...................................................................... 8
6.4 Operating conditions ................................................... 9
6.5 Mechanical data .......................................................... 9
6.6 Type labels ................................................................... 9
6.7 Pneumatic data .........................................................
6.8 Electrical data ............................................................
7 INSTALLATION .................................................................... 12
7.1 Safety instructions ..................................................... 12
7.4 Manual actuation of the actuator via pilot valve ........ 15
8 PNEUMATIC INSTALLATION .............................................. 16
9 ELECTRICAL INSTALLATION ............................................. 17
9.1 Safety instructions ..................................................... 17
9.2 Electrical installation 24 V DC ................................... 17
9.3 Display elements 24 V DC ......................................... 19
9.4 Programming data AS-Interface ................................
9.5 Electrical installation AS-Interface .............................
9.6 Display elements AS-Interface .................................. 22
9.7 Electrical installation DeviceNet ................................. 23
9.8 Display elements DeviceNet ...................................... 26
10 TEACH FUNCTION.............................................................. 28
10.1 Starting the teach function ........................................ 28
11 SAFETY END POSITIONS .................................................. 29
12 ACCESSORIES ................................................................... 30
12.1 Communications software .........................................
12.2 USB interface ............................................................
12.3 Download ..................................................................
13 PACKAGING, TRANSPORT, STORAGE ............................. 30
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Type 8691
Quickstart
1 QUICKSTART
The Quickstart describe the entire life cycle of the device. Keep the
Quickstart in a location which is easily accessible to every user and make the Quickstart available to every new owner of the device.
Important Safety Information.
Read Quickstart carefully and thoroughly. Study in particular
the chapters entitled “Basic safety instructions” and “Authorized use” .
▶ Quickstart must be read and understood.
Quickstart explains, for example, how to install and start-up the device.
A detailed description of the device can be found in the operating instructions for control head Type 8691 .
The operating instructions can be found on the Internet at: www.burkert.com
1.1
Definition of term, abbreviation
The term “device” used in these instructions always stands for the control head Type 8691.
In these instructions, the abbreviation “Ex” always refers to
“potentially explosive atmosphere”.
1.2 Symbols
The following symbols are used in these instructions.
DANGER!
Warns of an immediate danger.
▶ Failure to observe the warning may result in a fatal or serious injury.
WARNING!
Warns of a potentially dangerous situation.
▶ Failure to observe the warning may result in serious injuries or death.
CAUTION!
Warns of a possible danger.
▶ Failure to observe this warning may result in a medium or minor injury.
NOTE!
Warns of damage to property.
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 that must be carried out.
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Type 8691
Authorized use
2 AUTHORIZED USE
Non-authorized use of the control head Type 8691 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 explosive atmosphere the control head
Type 8691 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 potentially explosive atmosphere.
▶ Devices without a separate approval sticker may not be used in a potentially explosive atmosphere.
▶ 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 chap-
ter 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 8691 only as intended.
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.
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.
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6
General hazardous situations.
To prevent injury, ensure:
▶ 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 8691.
▶ Do not put any loads on the housing (e.g. by placing objects on it or standing on it).
▶ Do not make any external modifications to the device housing.
Do not paint the housing parts or screws.
Type 8691
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 8691 is used as intended in accordance with the specified application conditions.
4.3
Information on the Internet
The operating instructions and data sheets for Type 8691 can be found on the Internet at: www.burkert.com
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Type 8691
System description
5 SYSTEM DESCRIPTION
5.1
Structure and function
Control head
Apart from the electrical position feedback, the status of the device is optically displayed on the control head itself by a colored highpower LED.
Option: Communication possible via AS-Interface or DeviceNet.
5.2
Control head for integrated installation on the 21xx series
Electrical connection
Cable gland
M16 x 1.5 or
Circular plug-in connector M12 x 1
Body casing
Actuator
Process valve
Valve body
Fig. 1: Structure
The control head Type 8691 can control single or double-acting process valves and has been optimized for the integrated modular fitting of series 21xx process valves (Element) . 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 “5.3”
.
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.
Air intake filter
Connection housing
View without transparent cap
Top LEDs
Pressure limiting valve
(for protection against too high internal pressure in case of error)
Teach function
Exhaust air port
(label: 3)
Pilot air port
(label: 1)
Fig. 2: Structure for process valves belonging to the 21xx series english 7
5.3
Model for control of process valves belonging to the 20xx series
A special model enables the control head Type 8691 to be attached to process valves belonging to the 20xx series.
This model features has a different connection housing so that the pilot air ports can be connected to the outside of the actuator
Type 8691
Technical data
6 TECHNICAL DATA
6.1
Conformity
In accordance with the EU Declaration of conformity, the control head Type 8691 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.
Pilot air outlet 2
1
Pilot air outlet 2
2
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.
Fastening screws (2 x)
Connection housing
Fig. 3: Structure for process valves belonging to the 20xx series
The product is cULus approved. Instructions for use in the UL
area see chapter “6.8 Electrical data” .
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Type 8691
Technical data
6.4
Operating conditions
WARNING!
Solar radiation and temperature fluctuations may cause mal functions 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 indoor only 1)
Operating altitude up to 2000 m above sea level
Relative air humidity max. 90% at 55 °C (non condensing)
1) Only if cables, plugs and sockets have been connected correctly and in
compliance with the exhaust air concept see “8 Pneumatic installation”.
6.5
Mechanical data
Dimensions see data sheet
Housing material exterior: PPS, PC, VA
Sealing material exterior: EPDM interior: NBR
Stroke range of valve spindle 2 – 47 mm
6.6
Type labels
6.6.1
Type label standard (example)
Supply voltage, control
Typ
8691 AS-i 62SI single act Pilot 3,0
Pmax 7bar
Tamb 0°C - +55°C
Ser.-Nr. 001000
00179024 W14UN
Order number
Fig. 4: Type label (example)
Control function,
Pilot valve
Max. operating pressure
Ambient temperature
Serial number,
CE marking
Bar code
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
8691 -E3-...-0 PU02
Single act Pilot 3.0 24V
Pmax 7 bar
Tamb -10 - +55 °C
S/N 1001
00123456 W15MA
Max. operating pressure
Ambient temperature
Serial number, CE marking
Bar code
Order number, manufacture code
Fig. 5: UL Type label (example) english 9
6.6.3
UL additional label (example)
Type 4X enclosure
NEC Class 2 only
Supply voltage: 24 V
Degree of protection
Circuit with limited power
Supply voltage device
Fig. 6: UL additional label (example)
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 control medium -10 – +50 °C
Pressure range control medium 3 – 7 bar
Air output of pilot valve 250 l
N
/ min
(for aeration and deaeration)
(Q
Nn
- value according to definition for pressure drop from 7 to 6 bar absolute)
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Type 8691
Technical data
Connections Plug-in hose connector ∅ 6 mm / 1/4“
Socket connection G 1/8
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 III as per DIN EN 61140 (VDE 0140-1)
Connections Cable gland M16 x 1.5, wrench size 22
(clamping area 5 – 10 mm) with screw-type terminals for cable cross-sections 0.14 – 1.5 mm²
Circular plug-in connector
(M12 x 1, 8-pole)
Pilot valve
Supply 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)
Type 8691
Technical data
6.8.2
Electrical data with AS-Interface bus control
Protection class III as per DIN EN 61140
(VDE 0140-1)
Connections Circular plug-in connector
(M12 x 1, 4-pole)
Supply voltage 29.5 V – 31.6 V DC (according to specification)
Outputs
Max. switching capacity 1 W via AS-Interface
Watchdog function integrated
Devices without external supply voltage
Max. power consumption 120 mA
Power consumption input during normal operation
(after current reduction; valve + 1 end position reached) 90 mA
Devices with external supply voltage
External supply voltage 24 V ± 10 %
The power supply unit must include a secure disconnection in accordance with IEC 364-4-41 (PELV or SELV)
Max. power consumption 55 mA (after current reduction
≤ 30 mA)
Max. power consumption from AS-Interface 55 mA
6.8.3
Electrical data with DeviceNet bus control
Protection class III as per DIN EN 61140
(VDE 0140-1)
Connections Circular plug-in connector
(M12 x 1, 5-pole)
Supply voltage 11 V – 25 V
Max. power consumption < 80 mA
Output
Pull-in current current ≤ 50 mA
Holding current ≤ 30 mA english 11
7 INSTALLATION
Only for control head without pre-assembled process valve.
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.
Type 8691
Installation
7.2
Installation of the control head on process valves of series 21xx
NOTE!
When mounting on process valves with a welded body, follow the installation instructions in the operating instructions for the process valve.
Procedure:
When the control head is being installed, the collets of the pilot air ports must not be fitted to the actuator.
→ Align the puck and the control head until
1. the puck can be inserted into the guide rail of the
control head (see “Fig. 7”) and
2. the connection pieces of the control head can be inserted
into the pilot air ports of the actuator (see also “Fig. 8”).
NOTE!
Damaged printed circuit board or malfunction.
▶ Ensure that the puck is situated flat on the guide rail.
Guide rail
Puck
Fig. 7: Aligning the puck
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Type 8691
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 handtight (maximum torque: 1.5 Nm).
7.3
Installation of the control head on process valves of series 20xx
Procedure:
Guide rail
Connection pieces
Pilot air ports
Actuator
Fastening screws max. 1.5 Nm
Fig. 8: Installation of control head, 21xx series
Puck
Fig. 9: Aligning the puck
→ 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 (see “Fig. 9”).
NOTE!
Damaged printed circuit board or malfunction.
▶ Ensure that the puck is situated flat on the guide rail.
→ Press the control head all the way down as far as the actuator and turn it into the required position.
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Ensure that the pneumatic connections of the control head and those of the valve actuator are situated pref-
erably vertically one above the other (see “Fig. 10”).
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).
Pilot air outlet 2
1
Pilot air outlet 2
2
Upper pilot air port
Lower pilot air port
Example
∅ 80, CFA
Fig. 10: Installing the pneumatic connection, 20xx series
Type 8691
Installation
→ 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 “Tab. 1: Pneumatic connection to actuator” .
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.
“In rest position” means that the pilot valves of the control head Type 8691 are isolated or not actuated.
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.
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Type 8691
Installation
Control function A (CFA)
Process valve closed in rest position (by spring force)
Pilot air outlet 2
2
2
1
2
2
2
1
Upper pilot air port or
Lower pilot air port
Control function B (CFB)
Process valve open in rest position (by spring force)
Pilot air outlet 2
2
2
1
2
2
2
1
Upper pilot air port
Lower pilot air port
Control function I (CFI)
Process valve in rest position
Pilot air outlet 2
2 closed
2
1 or open
2
2
2
1
Upper pilot air port
Lower pilot air port
Tab. 1: Pneumatic connection to actuator
7.4
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
Fig. 11: Pilot valve for aerate and deaerate the actuator
Note: Do not press the hand lever when turning it.
Move actuator to end position
→ Turn the hand lever to the right using a screwdriver.
Move actuator back to the rest position
→ Turn the hand lever to the left using a screwdriver.
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Type 8691
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.
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)
(see “Fig. 12: Pneumatic connection”).
Fig. 12: Pneumatic connection
Pilot air port
(label: 1)
Exhaust air port
(label: 3)
Caution: (Exhaust air concept) :
In compliance with degree of protection IP67, an exhaust air 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.
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 8691
Electrical installation
9 ELECTRICAL INSTALLATION
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.
Minimum temperature rating of the cable to be connected to the field wiring terminals: 75 °C
9.2
Electrical installation 24 V DC
9.2.1
Electrical installation with cable gland
NOTE!
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When unscrewing and screwing in the body casing, do not hold the actuator of the process valve but the connection housing.
→ Unscrew the body casing (stainless steel) in a counter-clockwise direction.
Body casing
Connection housing
Actuator
Fig. 13: Open control head
→ Push the cables through the cable gland.
→ Connect the wires.
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Type 8691
Electrical installation ye gn Jumper: assignment p-n-p or n-p-n outlet (optional)
IN 1 = Top (top)
IN 2 = Bot (bottom)
Screw terminals end positions
Screw terminals
Supply 24 V DC
Screw terminals
Valve (control) ye gn
IN 1
IN 2
24 V
+
-
+
Valve
-
Jumper:
Color assignment of the Top LEDs
Fig. 14: Connection with cable gland
Body casing
Seal body casing
Connection housing
Fig. 15: Position of the seal in the body casing
→ Tighten union nut on the cable gland (torque approx. 1.5 Nm).
→ Check that the seal is correctly positioned in the body casing.
→ Close the device (assembly tool: 674077 2) ).
NOTE!
Damage or malfunction due to penetration of dirt and humidity.
To ensure degree of protection IP65 / IP67:
▶ Tighten the union nut on the cable gland according to the cable size or dummy plugs used. (ca. 1.5 Nm).
▶ Screw the body casing in all the way.
The teach function can now be used to automatically determine and read in the end positions of the valve (description of the
teach function see chapter “10 Teach function”).
2) Theassemblytool(674077)isavailablefromyourBürkertsalesoffice.
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Type 8691
Electrical installation
9.2.2
Electrical installation 24 V DC with circular plug-in connector
→ Connect the control head according to the table.
The teach function can now be used to automatically determine and read in the end positions of the valve (description of the teach
function see chapter “10 Teach function”).
6
5
4
7
3
8
1
Fig. 16: Circular plug M12 x 1, 8-pole
2
Pin Wire color 3) Designation
1
6
7
8
4
5
2
3 white brown green yellow grey pink
Limit switch top
Limit switch bottom
-
-
Supply voltage
Supply voltage +
Valve control unit +
Valve control unit -
Tab. 2: Connection with circular plug-in connector
Configuration
IN 1 (=Top)
IN 2 (=Bot)
GND
24 V DC
Valve +
Valve not used not used
3) The indicated colors refer to the connecting cable available as an accessory (919061).
9.3
Display elements 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.
Top LEDs
Status LED (yellow)
Fig. 17: Display elements 24 V DC
LED Color
Top LEDs 4) is lit green is lit yellow
LED Pilot valve is lit yellow
Status LED flashing yellow flickers yellow
Tab. 3: Display elements 24 V DC
LED pilot valve (yellow)
Connection housing
End postion bottom
End postion top
Pilot valve is actuated
Teach function is running
Puck PCB not available
4) Color setting ex works. Can be set via jumper (see “Fig. 14: Connection with cable gland”).
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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
Programming data AS-Interface
I/O configuration
AS-Interface
31 slaves
AS-Interface
62 slaves
B hex (1 input, 2 outputs)
ID code F hex A hex
Extended ID code 1
Extended ID code 2
Profile
Tab. 4: Programming data
F hex
F hex
S-B.F.F
7 hex
E hex
S-B.A.E
Pin 4:
NC
Type 8691
Electrical installation
9.5
Electrical installation AS-Interface
9.5.1
Connection with circular plug-in connector
M12 x 1, 4-pole, male
Connector views
The views show the image from the front looking at the pins, the solder connections are behind them.
Pin 3:
Bus –
Pin 1:
Bus +
Pin 2:
NC
Fig. 18: Bus connection without external supply voltage
Pin 4:
24 V +
Pin 3:
Bus –
Pin 1:
Bus +
Pin 2:
GND
Fig. 19: Bus connection with external supply voltage (optional)
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Type 8691
Electrical installation
Bus connection without external / with external supply voltage
Pin Designation Configuration
1
2
Bus +
NC or GND
(optional)
Bus –
AS-Interface bus line + not used or external supply voltage –
(optional)
AS-Interface bus line – 3
4
NC or 24 V +
(optional) not used or external supply voltage +
(optional)
Tab. 5: Pin assignment of circular plug-in connector for AS-Interface
→ Connect the control head according to the table.
The teach function can now be used to automatically determine and read in the end positions of the valve (description of the
teach function see chapter “10 Teach function”).
For the bus variant AS-Interface, the teach function can also be started via the bus protocol.
9.5.2
Connection with multi-pole cable and flat 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 flat cable terminal. The wiring diagram of the circular plug corresponds to the bus connection of the M12 4-pole circular plug
and can easily be connected to the flat cable terminal (see “Fig. 20”).
Screws
M12 plug-in connector branch circuit
Fig. 20: Controlhead8691withmulti-polecableandflatcableterminal
Handling the flat cable terminal
The multi-pole cable features a flat cable terminal - with M12 plug-in connector branch circuit - for AS-Interface flat cable. The flat cable terminal contacts the AS-Interface flat cable by means of penetration technology which allows installation by “clipping in” the AS-Interface flat cable without cutting and without removing insulation.
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Procedure:
→ Open the flat cable terminal
(loosen screws and remove cover).
→ Insert AS-Interface flat cable conclusively.
→ Close flat 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.
The teach function can now be used to automatically determine and read in the end positions of the valve (description of the
teach function see chapter “10 Teach function”).
For the bus variant AS-Interface, the teach function can also be started via the bus protocol.
Type 8691
Electrical installation
9.6
Display elements 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.
Status LED yellow
Top LEDs
Pilot valve LED yellow
Bus LED green
Bus LED red
Jumper: Color assignment of the Top LEDs
Connection housing
Fig. 21: Display elements 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.
22 english
Type 8691
Electrical installation
Bus LED
(green) off off on
Bus LED
(red) off on off
POWER OFF
No data traffic (expired Watch Dog at slave address does not equal 0)
OK flashing off on flashing
Slave address equals 0
Sensor supply overloaded or external reset flashing flashing Teach function error (Periphery error)
Tab. 6: Display elements bus status
LED Color
Status LED flashing yellow flickers yellow
Top LEDs 5) is lit green is lit yellow flashing red alternately with the green or yellow
LED
Pilot valve is lit yellow
Tab. 7: Display elements AS-Interface
Teach function is running
Puck PCB not available
End postion bottom
End postion top no data traffic or teach function error
Pilot valve is actuated
5) Color setting ex works. Can be set via jumper (see “Fig. 21”).
9.7
Electrical installation DeviceNet
9.7.1
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.
→ Connect the control head according to the table.
Pin 1 2 3 4 5
Signal Shielding V + V – CAN_H
Tab. 8: Pin assignment circular plug-in connector DeviceNet
CAN_L
Pin 4: CAN_H white
Pin 5: CAN_L blue
Pin 1: Drain
(Shield)
Pin 3: V– black
Pin 2: V+ red max. power 3 W, if valve is switched
Fig. 22: View of plug from the front onto the pins, the soldered connections are behind english 23
Type 8691
Electrical installation
9.7.2
Configuring the control head
Setting the DIP switches
NOTE!
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When unscrewing and screwing in the body casing, do not hold the actuator of the process valve but the connection housing.
→ Unscrew the body casing (stainless steel) in a counter-clockwise direction.
→ Set the DIP switches according to the following tables.
DIP switches for bus address and baudrate
Body casing
Connection housing
Fig. 24: DIP switches DeviceNet
8 DIP switches are available for configuration:
• DIP switches 1 to 6
• DIP switches 7 to 8 for the DeviceNet address for the baudrate
Actuator
Fig. 23: Open control head
24 english
Type 8691
Electrical installation
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
DIP 2
[21=2] off
DIP 3
[22=4] off
DIP 4
[23=8] off
DIP 5
[24=16] off on off off on off off off off off off
...
off
...
on
...
on
...
on
...
on on on on on on
Tab. 9: Settings of the DeviceNet address
DIP 6
[25=32] MAC ID off off off
...
on on
0
1
2
...
62
63
Setting the baudrate
Adjusting the control head to the baudrate of the network.
DIP 7 DIP 8 off on off on off off on on
Tab. 10: Setting the baudrate
Baudrate
125 kBaud
250 kBaud
500 kBaud not permitted
If the settings are changed by actuating the DIP switches, this change will not take effect until the device is restarted.
→ Check that the seal is correctly positioned in the body casing.
→ Close the device (assembly tool: 674077 6) ).
NOTE!
Damage or malfunction due to penetration of dirt and humidity.
▶ To observe degree of protection IP65 / IP67, screw the body casing in all the way.
Body casing
Seal body casing
Connection housing
Fig. 25: Position of the seal in the body casing
The teach function can now be used to automatically determine and read in the end positions of the valve (description of the
teach function see chapter “10 Teach function”).
For the bus variant DeviceNet, the teach function can also be started via the bus protocol as well as the communicator software.
6) Theassemblytool(674077)isavailablefromyourBürkertsalesoffice.
english 25
Type 8691
Electrical installation
9.8
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.
Top LEDs
Status LED (yellow)
Pilot valve LED (yellow)
Device status LED (twocoloured: red/green)
Bus status LED (twocoloured: red/green)
Connection housing
Fig. 26: LED display, DeviceNet
The device status of the control head (transparent cap) is displayed optically by colored high-power LEDs (Top LEDs). The assignment of the green and yellow Top LEDs to the end position can be changed via Explicit Messages (attribute address: class 150, instance 1, attribute 9) or via the communication software.
LED
Status LED
Top LED 7)
Color flashing yellow flickers yellow is lit green is lit yellow flashing red alternately with the green or yellow
LED
Pilot valve is lit yellow
Tab. 11: Display elements DeviceNet
Teach function is running
Puck PCB not available
End postion bottom
End postion top
• Online, without connection to the Master
• Connection time-out
• Critical error
Pilot valve is actuated
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.
7) Color setting ex works.
26 english
Type 8691
Electrical installation
Status of the bus status LED
LED Device status Explanation Troubleshooting
Off
Green
Flashes green
Flashes red
Device is not supplied with voltage
No power supply / not online
Device has still not ended Duplicate MAC
ID Test (test lasts approx. 2 sec)
Device cannot end
Duplicate MAC ID Test.
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
Connect other devices, if the device is the only network subscriber,
Replace device
Check baud rate
Check bus connection
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.
LED Device status Explanation
Red Critical fault
Another device with the same MAC ID address is in the circuit
No bus connection due to communication problems
Tab. 12: Status of the bus status LED
Troubleshooting
Check baud rate
If required, replace device
Status of the device status LED
LED Device status Explanation
Off No supply Device is not supplied with voltage
Green Device is working Normal operating status
Tab. 13: Status of the device status LED english 27
Type 8691
Teach function
10 TEACH FUNCTION
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.
For the bus variant DeviceNet, the teach function can also be started via the bus protocol as well as the communicator software.
10.1 Starting the teach function
Necessary requirements:
Before you can actuate the teach function, you must
• mount the control head on the actuator,
• connect the supply voltage,
• connect the compressed-air supply,
• AS-Interface: pilot valve OFF (D0 = 0),
• the DeviceNet must be connected to the Master (bus
LED must be lit green).
Transparent cap
Body casing
Connection housing
Actuator
Fig. 27: Open control head
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.
→ The key in recess for actuating the teach function keep pressed for approximately 5 seconds.
→ Only for control heads without pilot valve:
When yellow pilot valve LED is lit, move actuator to upper end position.
When yellow pilot valve LED goes out again, move actuator to lower end position.
28 english
Type 8691
Safety end positions
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: 674077 8) ).
Pilot valve LED (yellow)
Status LED: flashes yellow when teach function is running
Key in recess for actuating the teach function (keep pressed for approximately 5 seconds
Fig. 28: Teach function
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.
Important: When the teach function is activated the actuator cannot be actuated via the AS-Interface, DeviceNet communication and communication software.
8) Theassemblytool(674077)isavailablefromyourBürkertsalesoffice.
11 SAFETY END POSITIONS
Actuator system Designation
Safety end 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 double-acting
Control function I down
Tab. 14: Safety end positions up down up not defined english 29
12 ACCESSORIES
Designation
Connection cable M12 x 1, 8-pole
Assembly tool
USB adapter for connection to a
PC in conjunction with an extension cable
Order no.
919061
674077
227093
Communicator
Information at www.burkert.com
Tab. 15: Accessories
12.1
Communications software
The PC operating program “Communicator” is designed for communication with the devices with bus control via DeviceNet from
Bürkert. 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.
12.2
USB interface
The PC requires an USB interface for communication with the devices as well as an additional adapter with interface driver (see
12.3
Download
Download the software at: www.burkert.com
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Type 8691
Accessories
13 PACKAGING, TRANSPORT,
STORAGE
NOTE!
Transport damages.
Inadequately protected equipment may be damaged during transport.
▶ During transportation protect the device against wet and dirt in shock-resistant packaging.
▶ Avoid exceeding or dropping below the permitted storage temperature.
Incorrect storage may damage the device.
▶ Store the device in a dry and dust-free location.
▶ Storage temperature -20 – +65 °C.
Damage to the environment caused by device components contaminated with media.
▶ Dispose of the device and packaging in an environmentally friendly manner.
▶ Observe applicable regulations on disposal and the environment.
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