Burkert 8691 User Manual [en, de, fr]
Type 8691
Control Head
Steuerkopf
Tête de commande
Quickstart
English Deutsch Français
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2007 - 2013 Bürkert Werke GmbH
Quickstart 1312/04_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
2.1 Restrictions .................................................................................5
3 BASIC SAFETY INSTRUCTIONS ..........................................................5
4 GENERAL INFORMATION ........................................................................7
4.1 Contact address ........................................................................7
4.2 Warranty ......................................................................................7
4.3 Information on the Internet ......................................................7
5 SYSTEM DESCRIPTION ............................................................................7
5.1 Structure and function..............................................................7
5.2 Control head for integrated installation on the 21xx series
8
5.3 Model for control of process valves belonging to the 20xx
series 8
6 TECHNICAL DATA ........................................................................................9
6.1 Conformity ................................................................................... 9
6.2 Standards .................................................................................... 9
6.3 Operating conditions ................................................................9
6.4 Mechanical data.........................................................................9
6.5 Type label ....................................................................................9
6.6 Pneumatic data ........................................................................10
6.7 Electrical data ...........................................................................10
7 INSTALLATION ............................................................................................ 12
7.1 Safety instructions ...................................................................12
7.2 Installation of the control head on process valves
of series 21xx ...........................................................................12
7.3 Installation of the control head on process valves
of series 20xx ...........................................................................13
8 PNEUMATIC INSTALLATION ...............................................................15
9 ELECTRICAL INSTALLATION ...............................................................16
9.1 Safety instructions ...................................................................16
9.2 Electrical installation 24 V DC .............................................17
9.3 Display elements 24 V DC ....................................................19
9.4 Programming data AS-Interface ..........................................19
9.5 Electrical installation AS-Interface........................................20
9.6 Display elements AS-Interface .............................................22
9.7 Electrical installation DeviceNet ............................................23
9.8 Display elements DeviceNet ................................................25
10 TEACH FUNCTION ................................................................................... 27
10.1 Starting the teach function ....................................................27
11 SAFETY POSITIONS ................................................................................ 29
12 ACCESSORIES ...........................................................................................29
13 PACKAGING, TRANSPORT, STORAGE ..........................................30
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3
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 enclosed CD
and 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”.
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.
▶ 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 oper-
ating 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 installa-
tion, 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 fault-
less operation.
▶ Use the control head Type 8691 only as intended.
2.1 Restrictions
If exporting the system/device, observe any existing restrictions.
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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5
Type 8691
Basic safety instructions
General hazardous situations.
To prevent injury, ensure:
▶ In the potentially explosion-risk area 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
explosion-risk area.
▶ Devices without a separate approval sticker may not be used in a
potentially explosive area.
▶ 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 trans-
parent 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.
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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: 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 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
5 SYSTEM DESCRIPTION
5.1 Structure and function
Control head
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.
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Type 8691
System description
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
Air intake filter
View without transparent cap
Fig. 2: Structure for process valves belonging to the 21xx series
Connection housing
Pressure limiting valve
(for protection against too
high internal pressure in
Top LEDs
Teach function
case of error)
Exhaust air port
(label: 3)
Pilot air port
(label: 1)
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 (see “Fig. 3”).
Pilot air outlet 2
Pilot air outlet 2
Fastening screws (2 x)
Connection housing
Fig. 3: Structure for process valves belonging to the 20xx series
1
2
8
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Type 8691
Technical data
6 TECHNICAL DATA
6.1 Conformity
In accordance with the EC Declaration of conformity, the control head
Type 8691 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 minimum 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 “8 Pneumatic
installation”).
6.4 Mechanical data
Dimensions see data sheet
Housing material exterior: PPS, PC, VA
Sealing material exterior: EPDM
interior: NBR
Stroke range of valve spindle: 2 – 28 mm
2 – 47 mm
6.5 Type label
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
D-74653 Ingelfingen
Identification number
Fig. 4: Type label (example)
CE
W14UN
Control function
- Pilot valve
Max. operating
pressure
Max. ambient
temperature
Serial number CE mark
Bar-code
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Type 8691
Technical data
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
control medium -10 – +50 °C
Pressure range
control medium 3 – 7 bar
Air output of pilot valve 250 l
Connections Plug-in hose connector ∅ 6 mm / 1/4“
/ min
N
(for aeration and deaeration)
(QNn - value according to definition for
pressure drop from 7 to 6 bar absolute)
Socket connection G 1/8
6.7 Electrical data
6.7.1 Electrical data without bus control
24 V DC
Connections Cable gland M16 x 1.5, wrench size 22
(clamping area 5 – 10 mm)
with screw-type terminals for cable crosssections 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)
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Type 8691
Technical data
6.7.2 Electrical data with AS-Interface bus
control
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
6.7.3 Electrical data with DeviceNet bus
control
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
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Type 8691
Installation
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.
7.2 Installation of the control head on
process valves of series 21xx
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. 5”) and
2. the connection pieces of the control head can be inserted
into the pilot air ports of the actuator (see also “Fig. 6”).
NOTE!
Damaged printed circuit board or malfunction.
▶ Ensure that the puck is situated flat on the guide rail.
Guide rail
Puck
Fig. 5: 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
0.5 Nm only.
→ Attach the control head to the actuator using the two side fas-
tening screws. In doing so, tighten the screws only hand-tight
(maximum torque: 0.5 Nm).
Connection
pieces
Pilot air ports
Actuator
Fig. 6: Installation of control head, 21xx series
Fastening
screws
max. 0.5 Nm
7.3 Installation of the control head on
process valves of series 20xx
Procedure:
Guide rail
Puck
Fig. 7: 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. 7”).
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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13
Type 8691
Installation
Ensure that the pneumatic connections of the control head
and those of the valve actuator are situated preferably vertically one above the other (see “Fig. 8”).
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 fas-
tening screws. In doing so, tighten the fastening screws handtight only (maximum torque: 0.5 Nm).
Pilot air outlet 2
Pilot air outlet 2
Upper pilot air port
Lower pilot air port
Fig. 8: Installing the pneumatic connection, 20xx series
1
2
Example
∅ 80, CFA
→ Screw the plug-in hose connectors onto the control head and
the actuator.
→ Using the hoses supplied in the accessory kit, make the pneu-
matic 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 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.
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Type 8691
Pneumatic installation
Control function A (CFA)
Process valve closed in rest position (by spring force)
Pilot air outlet
Control
head
Upper pilot air port
Lower pilot air port
Actuator
222
1
222
or
Control function B (CFB)
Process valve open in rest position (by spring force)
Pilot air outlet
Control
head
Upper pilot air port
Lower pilot air port
Actuator
222
1
222
or
Control function I (CFI)
Process valve in rest position closed open
Pilot air outlet
Control
head
222
1
222
Upper pilot air port
8 PNEUMATIC INSTALLATION
DANGER!
1
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)
1
1
(see “Fig. 9: Pneumatic connection”).
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.
Lower pilot air port
Actuator
Tab. 1: Pneumatic connection to actuator
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Type 8691
Electrical installation
9 ELECTRICAL INSTALLATION
9.1 Safety instructions
DANGER!
Pilot air port
(label: 1)
Exhaust air port
(label: 3)
Fig. 9: Pneumatic connection
Caution: (Exhaust air concept):
In compliance with degree of protection IP67, an exhaust air
line must be installed in the dry area.
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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 8691
Electrical installation
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. 10: Open control head
→ Push the cables through the cable gland.
→ Connect the wires.
Jumper: assignment p-n-p or n-p-n
To
IN 1 = Top (top)
IN 2 = Bot (bottom)
Screw terminals
end positions
Screw terminals
Supply 24 V DC
Screw terminals
Valve (control)
Bot
Top
Bot
Top
Fig. 11: Connection with cable gland
Jumper:
Color assignment of the Top LEDs
outlet (optional)
IN 1
IN 2
+
24 V
-
+
Valve
-
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17
Body casing
Seal
body casing
Connection housing
Fig. 12: 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
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”).
1)
).
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
7
8
Fig. 13: Circular plug M12 x 1, 8-pole
Pin Wire color2)Designation Configuration
white Limit switch top IN 1 (=Top)
1
brown Limit switch bottom IN 2 (=Bot)
2
green Supply voltage GND
3
yellow Supply voltage + 24 V DC
4
grey Valve control unit + Valve +
5
pink Valve control unit - Valve -
6
7
8
Tab. 2: Connection with circular plug-in connector
- not used
- not used
5
4
3
1
2
1) The assembly tool (674077) is available from your Bürkert sales office.
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2) The indicated colors refer to the connecting cable available as an
accessory (919061).
Type 8691
Electrical installation
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)
LED pilot valve (yellow)
Connection housing
Fig. 14: Display elements 24 V DC
LED Color
Top LEDs
3)
LED Pilot valve
Status LED
Tab. 3: Display elements 24 V DC
is lit green End postion bottom
is lit yellow End postion top
is lit yellow
Pilot valve is actuated
flashing yellow Teach function is running
flickers yellow Puck PCB not available
NOTE!
Damage or malfunction due to penetration of dirt and humidity.
▶ To observe degree of protection IP65 / IP67, screw the trans-
parent cap in all the way.
9.4 Programming data AS-Interface
AS-Interface
31 slaves
I/O configuration B hex (1 input, 2 outputs)
ID code F hex A hex
Extended ID code 1 F hex 7 hex
Extended ID code 2 F hex E hex
Profile S-B.F.F S-B.A.E
Tab. 4: Programming data
AS-Interface
62 slaves
3) Color setting ex works. Can be set via jumper (see “Fig. 11: Connection
with cable gland”).
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19
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 4:
NC
Pin 1:
Bus +
Fig. 15: Bus connection without external supply voltage
Pin 4:
24 V +
Pin 1:
Bus +
Fig. 16: Bus connection with external supply voltage (optional)
Pin 3:
Bus –
Pin 2:
NC
Pin 3:
Bus –
Pin 2:
GND
Bus connection without external / with external supply voltage
Pin Designation Configuration
Bus + AS-Interface bus line +
1
NC or GND
2
(optional)
Bus – AS-Interface bus line –
3
NC or 24 V +
4
(optional)
Tab. 5: Pin assignment of circular plug-in connector for AS-Interface
not used or external supply voltage –
(optional)
not used or external supply voltage +
(optional)
→ 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.
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Type 8691
Electrical installation
9.5.2 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 connection of the M12 4-pole circular plug and
can easily be connected to the ribbon cable terminal (see “Fig. 17”).
Screws
M12 plug-in connector
branch circuit
Fig. 17: Control head 8691 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 ASInterface cable harness without cutting and without removing insulation.
Procedure:
→ 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.
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.
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21
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. 18: Display elements AS-Interface
NOTE!
Damage or malfunction due to penetration of dirt and humidity.
▶ To observe degree of protection IP65 / IP67, screw the trans-
parent cap in all the way.
Bus LED
(green)
Bus LED
(red)
off off POWER OFF
off on
No data traffic (expired Watch Dog at slave
address does not equal 0)
on off OK
flashing on Slave address equals 0
off flashing 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 Teach function is running
flickers yellow Puck PCB not available
4)
Top LEDs
is lit green End postion bottom
is lit yellow End postion top
flashing red
alternately with the
green or yellow
LED
Pilot valve
Tab. 7: Display elements AS-Interface
is lit yellow Pilot valve is actuated
no data traffic or
teach function error
22
4) Color setting ex works. Can be set via jumper (see “Fig. 18”).
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Type 8691
Electrical installation
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
Signal
Tab. 8: Pin assignment circular plug-in connector DeviceNet
Data lines
Fig. 19: View of plug from the front onto the pins, the soldered connections
1 2 3 4 5
Shielding V + V – CAN_H CAN_L
Pin 4: CAN_H
white
Pin 5: CAN_L
blue
Pin 1: Drain
(Shield)
are behind
Pin 3: V–
black
Pin 2: V+
red
max. power 3 W,
if valve is switched
Supply voltage
11 – 25 V DC
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.
Body casing
Connection housing
Actuator
Fig. 20: Open control head
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Type 8691
Electrical installation
→ Set the DIP switches according to the following tables.
DIP switches
for bus address
and baudrate
Fig. 21: 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
Settings of the DeviceNet address
MAC ID – Medium Access Control Identifier:
[DIP 1=off=0 / DIP 1=on=1 /
MAC ID=DIP 1*2
DIP 1
[20=1]
DIP 2
[21=2]
0
+DIP 2*21+...+DIP 6*25]
DIP 3
[22=4]
DIP 4
[23=8]
DIP 5
[24=16]
DIP 6
[25=32]
off off off off off off 0
on
off
...
off
off off off off off 1
on
off off off off 2
... ... ... ... ... ...
on on on on on
on on on on on on
Tab. 9: Settings of the DeviceNet address
Setting the baudrate
Adjusting the control head to the baudrate of the network.
DIP 7 DIP 8 Baudrate
off off 125 kBaud
on off 250 kBaud
off on 500 kBaud
on on not permitted
Tab. 10: Setting the baudrate
MAC ID
62
63
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If the settings are changed by actuating the DIP switches,
this change will not take effect until the device is restarted.
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Type 8691
Electrical installation
→ Check that the seal is correctly positioned in the body casing.
→ Close the device (assembly tool: 674077
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. 22: 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.
5) The assembly tool (674077) is available from your Bürkert sales office.
5)
).
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 (two-
coloured: red/green)
Bus status LED (two-
coloured: red/green)
Connection housing
Fig. 23: 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).
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Type 8691
Electrical installation
LED Color
Status LED flashing yellow Teach function is running
flickers yellow Puck PCB not available
6)
Top LEDs
is lit green End postion bottom
is lit yellow End postion top
• Online, without con-
flashing red
alternately with the
green or yellow
nection to the Master
• Connection time-out
• Critical error
LED
Pilot valve
Tab. 11: Display elements DeviceNet
is lit yellow Pilot valve is actuated
NOTE!
Damage or malfunction due to penetration of dirt and humidity.
▶ To observe degree of protection IP65 / IP67, screw the trans-
parent cap in all the way.
6) Color setting ex works.
Status of the bus status LED
LED Device status Explanation Troubleshooting
Device is not supplied
with voltage
No power
Off
Green
Flashes
green
Flashes
red
Red Critical fault
Tab. 12: Status of the bus status LED
supply /
not online
Online, connection to
master exists
Online, without
connection to
master
Connection
time-Out
Device has still not
ended Duplicate MAC
ID Test (test lasts
approx. 2 sec)
Device cannot end
Duplicate MAC ID Test.
Normal operating status
with established connection to the master
Normal operating status
without established
connection to the
master
One or more I/O connections are in TimeOut state
Another device with the
same MAC ID address
is in the circuit
No bus connection
due to communication
problems
Connect other devices,
if the device is the only
network subscriber,
Replace device
Check baud rate
Check bus connection
New connection establishment by master to
ensure that the I/O
data is transmitted
cyclically.
Check baud rate
If required, replace
device
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Type 8691
Teach function
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
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 and DeviceNet, the teach
function can also be started via the bus protocol.
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).
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