Burkert 8691 Control head Operating Instructions
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Type 8691
REV.2
Control Head
Operating Instructions
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2017 - 2018
Operating Instructions 1812/02_EU-EN_00810626 / Original DE
Type 8691 REV.2
Control head Type 8691 REV.2
T able of conTenTs
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Type 8691 REV.2
Inhaltsverzeichnis
Teach function: Determine end positions and save these, REV.2
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Type 8691 REV.2
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Type 8691 REV.2
Type 8691 REV.2
About these instructions
1 ABOUT THESE INSTRUCTIONS
The operating instructions describe the entire life cycle of the device.
→ Keep these instructions ready to hand at the operation site.
Important safety information.
▶ Carefully read these instructions.
▶ Observe in particular the safety instructions, intended use and operating conditions.
▶ Persons, who work on the device, must read and understand these instructions.
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 a fatal or serious injury.
CAUTION
Warns of a possible danger.
▶ Failure to observe the warning may result in moderate or minor injuries.
NOTE
Warns of damage to property.
▶ Failure to observe the warning may result in damage to device or system.
Indicates important additional information, tips and recommendations.
Refers to information in these operating instructions or in other documentation.
▶ Designates an instruction for risk prevention.
→ Designates a procedure which you must carry out.
Indicates a result.
1.2
Definition of terms
In these instructions the term “device” denotes the following device types:
Control head Type 8691 REV.2
The term “büS” (Bürkert system bus) used in this instruction stands for the communication bus developed by Bürkert and based on the CANopen protocol.
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Type 8691 REV.2
Intended use
2 INTENDED USE
The control head Type 8691 REV.2 is designed to be mounted on pneumatic actuators of process valves for the control of media. The permitted fluid media are listed in the technical data.
▶ Use the device for its intended purpose only. Non-intended use of the device may be dangerous to people, nearby equipment and the environment.
▶ Correct transportation, correct storage as well as correct installation, commissioning, operation and maintenance are essential for reliable and problem-free operation.
▶ When using the device, observe the permitted data, operating conditions and application conditions.
This information can be found in the contractual documents, the operating instructions and on the type label.
▶ Use the device only in conjunction with third-party devices and components recommended and authorized by Bürkert.
▶ Do not use the device outdoors without protection from the weather.
▶ In areas at risk of explosion, only use devices approved for use in those areas. These devices are labeled with a separate Ex type label. For such use, note the information provided on the separate Ex type label and the additional explosion-related information or separate explosion-related operating instructions.
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Type 8691 REV.2
Basic safety instructions
3 BASIC SAFETY INSTRUCTIONS
These safety instructions do not consider any contingencies or incidents which occur during installation, operation and maintenance.
The operator is responsible for observing the location-specific safety regulations, also with reference to the personnel.
DANGER
Risk of injury from high pressure and discharge of medium.
▶ Before working on the device or system, switch off the pressure. Vent or drain lines.
DANGER
Risk of injury from electric shock.
▶ Before working on the device or system, switch off the power supply. Secure against reactivation.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
To prevent injury, ensure the following:
▶ Secure device or system to prevent unintentional activation.
▶ Only trained technicians may perform installation and maintenance work.
▶ Perform installation and maintenance with suitable tools only.
▶ Do not make any changes to the device and do not subject it to mechanical stress.
▶ Operate the device only in perfect state and in consideration of the operating instructions.
▶ Observe the general rules of technology.
▶ Install the device according to the regulations applicable in the respective country.
▶ Do not feed corrosive or flammable media into the device connections.
▶ Do not feed any fluids into the connections of the device.
▶ After the process is interrupted, restart in a controlled manner. Observe sequence:
1. Connect electrical or pneumatic power supply.
2. Charge the device with medium.
▶ Observe intended use.
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Type 8691 REV.2
General information
4 GENERAL INFORMATION
4.1
Germany
Contact address
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.
Also in the internet at: www.burkert.com
4.2
Warranty
The warranty is only valid if the device is used as intended in accordance with the specified application conditions.
4.3
Information on the Internet
The operating instructions and data sheets for Bürkert products can be found on the Internet at: www.burkert.com
4.4
Trademarks
The brands listed below are trademarks of the corresponding companies / associations or organizations.
Loctite Henkel Loctite Deutschland GmbH
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Type 8691 REV.2
Product description
5 PRODUCT DESCRIPTION
5.1
Structure
The modular design of the device supports various configurations and variants.
View without transparent cap:
Display device status: high-power LEDs
Pilot valve LED
Status LED
Pilot air port, label: 1
Exhaust air port, label: 3
Fastening screw
Pressure limiting valve
Electrical connection: circular plug-in connector
Figure 1: Structure
5.1.1
Structure, integrated pilot air duct (21xx, Element)
The structure with integrated pilot air duct is optimized for mounting on process valves of the 21xx series
(Element).
Transparent cap
Body casing
Air intake filter
Fastening screw
Basic housing
Figure 2: Structure, integrated pilot air duct
5.1.2
Structure, external pilot air duct (20xx, Classic)
The structure with external pilot air duct is optimized for mounting on process valves of the 20xx series (Classic).
Figure 3:
Transparent cap
Body casing
Pilot air outlet 2-1
Pilot air outlet 2-2
Air intake filter
Fastening screw
Basic housing
Structure, external pilot air duct
So that the pilot air can be externally connected to the actuator, this structure has a different basic housing..
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Type 8691 REV.2
Product description
5.1.3
Variants
Communication possible via:
• IO-Link
• büS
5.2
Function
This device is capable of controlling single-acting and double-acting process valves.
The pilot valves can be manually overridden.
An analog, inductive sensor element provides feedback about end positions being reached. The teach function is used for configuration.
Colored LEDs indicate the device status.
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Type 8691 REV.2
Technical data
6 TECHNICAL DATA
6.1
Conformity
The device conforms to the EU directives as per the EU Declaration of Conformity (if applicable).
6.2
Standards
The applied standards, which are used to demonstrate conformity with the EU Directives, are listed in the EU type examination certificate and/or the EU Declaration of Conformity (if applicable).
6.3
Approvals
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 the explosion-risk area. See additional explosion-related information.
The product is cULus approved. Instructions on operation in the UL area see chapter “Electrical data”.
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6.4
Type label
6.4.1
Type label standard
Figure 4:
Type
Operating voltage or fieldbus control
8691 büS single act pilot 3,0
Pmax 7bar
Tamb -10 - +55°C REV.2
Ser.-Nr. 001000
00179024 W14UN
Control function, pilot valve
Max. operating pressure
Ambient temperature, version
Serial number, CE marking
Order number, manufacture code
Barcode
Type label standard (example)
6.4.2
UL type label
Figure 5:
Type
Features of the type code applicable to UL and ATEX
8691 -E3-...-0 single act pilot 3,0 24V
Pmax 7bar
Tamb -10 - +55°C REV.2
Ser.-Nr. 001000
00179024 W14UN
Control function, pilot valve, supply voltage pilot valve
Max. operating pressure
Ambient temperature, version
Serial number, CE marking
Order number, manufacture code
Barcode
UL type label (example)
6.4.3
UL additional label
Type 4X enclosure
NEC Class 2 only
Supply voltage: 24 V
Figure 6: UL additional label (example)
Degree of protection
Circuit with limited power
Supply voltage device
Type 8691 REV.2
Technical data
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Type 8691 REV.2
Technical data
6.5
Operating conditions
See type label Ambient temperature
Degree of protection
Evaluated by manufacturer:
Evaluated by UL:
Operating altitude
IP65, IP67 as per EN 60529*
UL type 4x Rating* up to 2000 m above sea level
6.5.1
Fluidic data
Control medium
Dust content Class 7
Water content class 3
Oil content Class X
Pressure range
Temperature range
Pilot valve air flow rate
Connections
Neutral gases, air
Quality classes as per ISO 8573-1
Max. particle size 40 µm, max. particle density 10 mg/m³
Max. pressure dew point -20°C or min. 10°C below lowest operating temperature
Max. 25 mg/m³
3–7 bar
-10 to +50 °C
250 l
(Q
Nn
N
/ min (for aeration and deaeration)
- value according to definition for pressure drop from 7 to 6 bar absolute)
Internal thread G 1/8 “
6.5.2
Electrical data
NOTE
For variants with cULus approval, please note:
▶ Only use circuits of limited power as per UL NEC Class 2.
6.5.2.1 Electrical data, IO-Link
Protection class
Connection
Operating voltage
Max. current consumption
Current consumption input during normal operation
(after current reduction, pilot valve after 200 ms and 1 end position reached)
3 as per DIN EN 61140 (VDE 0140-1)
Circular plug-in connector M12 x 1, 4-pin, Port Class A
18–30 V DC (according to specification)
135 mA @18 V (incl. inrush current pilot valve for 200 ms)
110 mA @18 V
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Type 8691 REV.2
Technical data
* Only if cables, plugs and sockets have been connected correctly and in compliance with the exhaust air concept see chapter “Pneumatic installation”.
6.5.2.2 Electrical data, büS
Protection class
Connection
Operating voltage
Max. current consumption
Current consumption input during normal operation
(after current reduction, pilot valve after 200 ms and 1 end position reached)
3 as per DIN EN 61140 (VDE 0140-1)
Circular plug-in connector M12 x 1, 5-pin
18–30 V DC (according to specification)
120 mA @18 V (incl. inrush current pilot valve for 200 ms)
95 mA @18 V
6.6
Mechanical data
Dimensions
Body material exterior:
Seal material external: internal:
Stroke range of valve spindle
See data sheet
PPS, PC, VA
EPDM
NBR
2–47 mm
6.6.1
Safety end positions
Safety end positions after failure of the electrical or pneumatic auxiliary power:
Actuator system Designation Safety end positions after failure of the auxiliary power electrical down pneumatic down
Table 1: single-acting control function A up down single-acting control function B up down double-acting control function I up down
Safety end positions up down up not defined english
Type 8691 REV.2
Mechanical installation
7 MECHANICAL INSTALLATION
7.1
Safety instructions
DANGER
Risk of injury from high pressure and discharge of medium.
▶ Before working on the device or system, switch off the pressure. Vent or drain lines.
WARNING
Risk of injury from improper installation.
▶ Only trained technicians may perform installations.
▶ Perform installations with suitable tools only.
WARNING
Risk of injury due to unintentional activation and uncontrolled start-up of the system.
▶ Secure system against unintentional activation.
▶ Ensure that the system does not start up in an uncontrolled manner.
7.2
Installing devices with integrated pilot air duct (21xx,
Element)
Only for devices without preinstalled process valve.
Required attachment kit: ELEMENT Type 21xx
NOTE
Damage to the device and the drive when welding welded bodies.
Observe the following during installation on process valves with welded body:
▶ Observe the installation instructions for the operating manual of the process valve.
▶ Before installing the device, weld the process valve into the pipe system.
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Type 8691 REV.2
Mechanical installation
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1. Installing the switch spindle
Transparent cap
Position indicator
Pilot air ports
(plug-in connectors with collets or threaded bushings)
Figure 7:
Actuator
Installing the switch spindle (1), integrated pilot air duct
→ Unscrew the transparent cap from the actuator.
→ Unscrew position indicator from spindle extension.
→ For variant with hose connector: remove the collets (white sleeves) from the pilot air ports.
Puck
Switch spindle
Guide element
Lip seal
Max. 1 Nm
Max. 5 Nm
Actuator cover
O-ring
Spindle extension
Figure 8: Installing the switch spindle (2), integrated pilot air duct
NOTE
Lip seal can be damaged if incorrectly installed.
The lip seal is pre-mounted in the guide element and must be "locked into position" in the undercut.
▶ When installing the switch spindle, do not damage the lip seal.
→ Slide switch spindle through the guide element.
NOTE
Contamination of the lip seal due to screw locking paint.
▶ Do not apply any screw locking paint to the switch spindle.
→ To secure the switch spindle, apply some screw locking paint (e.g. Loctite 290) in the threading of the spindle extension in the actuator.
→ Check that the O-ring is in the correct position.
→ Screw guide element in actuator cover (tightening torque: max. 5 Nm).
→ Screw switch spindle onto the spindle extension. A slot is provided on the top side (tightening torque: max. 1 Nm).
→ Push puck onto the switch spindle and lock into position.
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Type 8691 REV.2
Mechanical installation
2. Attaching the form seal
→ 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.
Before installing the device, remove the collets in the pilot air ports.
Pilot air ports without collets
Form seal
Figure 9: Attaching the form seal
3. Installing the device
NOTE
Damage or functional outage of the PCB
▶ Ensure that the puck lies flat in the guide rail.
→ Align the puck and device so that:
1. The puck rests in the guide rail of the device (see Fig. below).
2. Find the connection pieces of the device into the pilot air ports of the actuator (see second Fig. below).
Guide rail
Puck
Figure 10: Aligning the puck
→ Push the device without turning it onto the actuator until no gap is visible on the form seal.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Tighten fastening screws only with a tightening torque of max. 1.5 Nm.
→ Attach device to the actuator using the two side fastening screws. In doing so, tighten the screws only hand-tight (max. torque: 1.5 Nm).
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Type 8691 REV.2
Mechanical installation
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Figure 11: Installation
Connection piece
Pilot air ports
2x fastening screw
(max. 1.5 Nm)
7.3
Installing devices with external control air duct (20xx,
Classic)
Only for devices without preinstalled process valve.
Required attachment kit: Classic Type 20xx for the corresponding variant
NOTE
Damage to the device and the drive when welding welded bodies.
Observe the following during installation on process valves with welded body:
▶ Observe the installation instructions for the operating manual of the process valve.
▶ Before installing the device, weld the process valve into the pipe system.
1. Installing switch spindle
Transparent cap
Position indicator
Actuator
Figure 12: Installing the switch spindle (1), external pilot air duct
→ Unscrew the transparent cap from the actuator.
→ Unscrew the position indicator of the spindle with hex key.
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Type 8691 REV.2
Mechanical installation
Figure 13: Installing the switch spindle (2), external pilot air duct
Puck
Switch spindle
Guide element
Max. 8 Nm
O-ring
Max. 1 Nm
Actuator cover
Plastic part
Spindle (actuator)
→ Press O-ring down into the actuator cover.
→ Manually screw the switch spindle (and the slipped over guide element) to the spindle of the actuator with the plastic part and do not tighten initially.
→ Screw the guide element into the cover of the actuator with a face pin wrench* (tightening torque: max.
8 Nm).
→ Tighten the switch spindle on the spindle of the actuator. A slot is provided on the top side (tightening torque: max. 1 Nm).
→ Push puck onto the switch spindle and lock into position.
2. Installing the device
Cover ring
Figure 14: Attaching cover ring
→ Wind cover ring onto actuator cover (only for actuator size ø50 and ø63).
NOTE
Damage or functional outage of the PCB
▶ Ensure that the puck lies flat in the guide rail.
→ Align the puck and the device so that the puck rests in the guide rail of the device (see following figure).
* journal Ø: 3 mm; journal gap: 23.5 mm
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Type 8691 REV.2
Mechanical installation
Guide rail
22
Puck
Figure 15: Aligning the puck
→ Press the device all the way down to the actuator and turn it into the required position.
Ensure that the pneumatic connections of the device and those of the valve actuator are situated preferably vertically one above the other (see Fig. below). For different positioning, longer hoses may be required than those supplied in the attachment kit.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Tighten fastening screws only with a tightening torque of max. 1.5 Nm.
→ Attach device to the actuator using the two side fastening screws. In doing so, tighten the screws only hand-tight (max. torque: 1.5 Nm).
3. Pneumatically connecting device and actuator
Pilot air outlet 2-1
Pilot air outlet 2-2
Fastening screw
Upper pilot air port
Lower pilot air port
Example ∅ 80, CFA
Figure 16: Pneumatically connecting device and actuator
→ Screw plug-in hose connector onto device and actuator.
→ Using the hoses supplied in the attachment kit, make the pneumatic connection between the device and actuator with the following table.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Only for CFA and CFB: Connect the pilot air outlet which is not required to the free pilot air port of the actuator or seal with a plug.
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Type 8691 REV.2
Mechanical installation
Control function A (CFA)
Process valve closed in resting position (by spring force)
Device Pilot air outlet
Actuator Upper pilot air port
Lower pilot air port
2
2
2
1 or 2
2
2
1
Control function B (CFB)
Process valve open in resting position (by spring force)
Device Pilot air outlet
Actuator Upper pilot air port
Lower pilot air port
2
2
2
1
Table 2: Pneumatically connecting device and actuator CFA and CFB
Control function I (CFI)
Process valve closed in resting position
Device Pilot air outlet
Actuator Upper pilot air port
Lower pilot air port
2
2
2
1 or 2
2
2
1
Control function I (CFI)
Process valve open in resting position
Device
Actuator
Pilot air outlet
Upper pilot air port
Lower pilot air port
2
2
2
1
Table 3: Pneumatically connecting device and actuator CFI
"In rest position" means that the pilot valves of the device are isolated and not actuated.
If the ambient air is humid, a hose can be connected between pilot air outlet 2
2
of the device and the unconnected pilot air port of the actuator for control function A and control function B. As a result, the spring chamber of the actuator is supplied with dry air from the pilot air outlet of the device.
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Type 8691 REV.2
Mechanical installation
7.4
Aligning (turning) the device and position of connections
Devices with integrated pilot air duct:
Alignment of device and position of connections is only possible with 2100, 2101 and 2106 process valves.
The device and position of the connections can be aligned by:
- turning the actuator
Devices with external pilot air duct:
The device and position of the connections can be aligned by:
- turning the actuator (only types 2000, 2002, 2006 and 2012)
- turning the device
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Type 8691 REV.2
Mechanical installation
7.4.1
Turning the actuator, devices with hexnut
The following description only applies for devices with hexnut on the actuator.
For devices without a hexnut on the actuator: refer to the section "Turning the actuator, devices without hexnut" in the operating instructions.
The position of the connections can be infinitely adjusted by rotating the actuator through 360°.
Actuator
Hexnut
Body connection
Valve body
Actuator
Hexnut
Body connection
Valve body
Figure 17: Turning the actuator (1)
→ Clamp the valve body into a holding device (only for valves not yet installed).
NOTE
Damage to the seat seal or the seat contour.
▶ When turning the actuator, the valve must be open.
→ For control function A and I*:
Apply compressed air to pilot air port 1.
→ Switching the device manually with pilot valve (see chapter).
→ Using a suitable open-end wrench, counter the wrench flat on the body connection.
→ Place a suitable open-end wrench on the hexagonal bolt of the actuator.
DANGER
Risk of injury from high pressure and discharge of medium.
If the direction of rotation is wrong, the body connection may become detached.
▶ Only turn the actuator is the prescribed direction.
→ Move the actuator to the required position by turning it counter-clockwise (viewed from below).
Figure 18: Turning the actuator (2)
* if variant exists english
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Type 8691 REV.2
Mechanical installation
7.4.2
Turning the actuator, devices without hexnut
The position of the connections can be infinitely adjusted by rotating the actuator through 360°.
Actuator
Key-fit forms
Wrench flat on the body connection
Figure 19: Turning the actuator (1), devices without hexnut
→ Clamp the valve body into a holding device (only for valves not yet installed).
NOTE
Damage to the seat seal or the seat contour.
▶ When turning the actuator, the valve must be open.
→ For control function A and I*:
Apply compressed air to pilot air port 1.
Switching the device manually with pilot valve (see chapter).
→ Using a suitable open-end wrench, counter the wrench flat on the body connection.
→ Use a special wrench** precisely in the key-fit forms of the actuator.
DANGER
Risk of injury from high pressure and discharge of medium.
If the direction of rotation is wrong, the body connection may become detached.
▶ Only turn the actuator is the prescribed direction.
By rotating in a clockwise direction (viewed from below), move the actuator to the desired position.
Special wrench
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Figure 20: Turning the actuator (2), devices without hexnut
* if variant exists
** The special wrench (665702) can be procured from your Bürkert sales department.
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Type 8691 REV.2
Mechanical installation
7.4.3
Turning the device
Only for devices with external pilot air duct (20xx, Classic).
The position of the connections can be aligned by rotating the device continuously through 360°.
Device
Fastening screw (2x)
Pneumatic connection
Actuator
Figure 21: Turning the device
→ Loosen pneumatic connection between device and actuator.
→ Release fastening screws (hex socket bolt SW2.5).
→ Rotate the device into the required position.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Tighten fastening screws only with a tightening torque of max. 1.5 Nm.
▶ Screw in body casing to the stop.
▶ Screw in transparent cap to the stop.
▶ Only for CFA and CFB: Connect the pilot air outlet which is not required to the free pilot air port of the actuator or seal with a plug.
→ Only tighten the fastening screws until they are hand-tight (max. torque: 1.5 Nm).
→ Re-establish pneumatic connections between device and actuator. If necessary, use longer hoses.
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Type 8691 REV.2
Pneumatic installation
8 PNEUMATIC INSTALLATION
8.1
Safety instructions
DANGER
Risk of injury from high pressure and discharge of medium.
▶ Before working on the device or system, switch off the pressure. Vent or drain lines.
WARNING
Risk of injury from improper installation.
▶ Only trained technicians may perform installations.
▶ Perform installations with suitable tools only.
WARNING
Risk of injury due to unintentional activation and uncontrolled start-up of the system.
▶ Secure system against unintentional activation.
▶ Ensure that the system does not start up in an uncontrolled manner.
8.2
Connecting the device pneumatically
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Exhaust air port, label: 3
Pilot air port, label: 1
Figure 22: Connecting the device pneumatically
Important information for the problem-free functioning of the device:
▶ The installation must not cause back pressure to build up.
▶ Select a hose with sufficient cross section for the connection.
▶ Design the exhaust air line in such a way that no water or other liquid can get into the device through the exhaust air port.
▶ The pressure supply must always be at least 0.5–1 bar above the pressure required to bring the actuator into its end position.
→ Connect the control medium to the pilot air port (1)
(3–7 bar, instrument air, oil-free, anhydrous and dust-free).
→ Connect the exhaust air line or a silencer to the exhaust air port (3).
Exhaust air system:
▶ To maintain the IP67 degree of protection, install an exhaust air line in the dry area.
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Type 8691 REV.2
Electrical installation
9 ELECTRICAL INSTALLATION
9.1
Safety instructions for electrical installation
DANGER
Risk of injury from electric shock.
▶ Before working on the device or system, switch off the power supply. Secure against reactivation.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
WARNING
Risk of injury from improper installation.
▶ Only trained technicians may perform installations.
▶ Perform installations with suitable tools only.
WARNING
Risk of injury due to unintentional activation and uncontrolled start-up of the system.
▶ Secure system against unintentional activation.
▶ Ensure that the system does not start up in an uncontrolled manner.
9.2
Connecting the device electrically,
IO-Link
4 3
1 2
Figure 23: Pin assignment
Pin Designation
1
2
3
4
Table 4:
L +
I/Q
L −
Q/C
Pin assignment
Assignment
IO-Link mode
24 V DC
Not assigned
0 V (GND)
IO-Link
SIO mode
DI or DO
DI or DO english
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Type 8691 REV.2
Electrical installation
9.3
Connecting the device electrically, büS
3
5
1
4
2
Figure 24: Pin assignment
3
4
5
Pin
1
2
Table 5:
Wire color
CAN plate/shielding red black white blue
Pin assignment
Assignment
CAN plate/shielding
+24 V DC ± 10%, max. residual ripple 10%
GND / CAN_GND
CAN_H
CAN_L
For electrical installation with büS network, note:
Use a 5-pin round plug and shielded 5-core cable.
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Type 8691 REV.2
Start-up
10 START-UP
10.1 Teach function: Determine end positions and save these, REV.2
• Automatic teach function: For devices with pilot valve
The teach function automatically identifies and saves the end positions of the valve.
• Manual teach function: For devices without pilot valve
The end positions are captured and saved automatically.
10.1.1 Automatic teach function
For devices with pilot valve:
The teach function automatically identifies and saves the end positions of the valve.
With the IO-Link variant, the teach function can also be started with an acyclic IO-Link parameter (see parameter list) or with the Bürkert Communicator.
With the büS variant, the teach function can also be started with the Bürkert Communicator.
Essential requirements:
• The device is mounted on the actuator.
• The supply voltage is connected.
• The compressed air supply is connected.
• So that the correct reference conditions are identified, the pilot pressure must correspond to the operating conditions.
Transparent cap
Body casing
Basic housing
Figure 25: Opening or closing the device
Actuator
Closing device:
Seal
(body casing)
NOTE
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When opening or closing the device, do not press against the actuator, but against the basic housing.
→ Screw off the body casing by turning counterclockwise.
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Type 8691 REV.2
Start-up
Pilot valve LED (V)
Status LED (red)
Status LED (green)
Button to start the teach function
Figure 26: Starting teach function
→ Hold down the button to start the teach function for approx. 5 s until the red status LED blinks.
→ When the red status LED starts blinking, release the button within 5 seconds.
When the red status LED stops blinking, the teach function is terminated.
The end positions of the valve have been identified and saved.
→ Check that the seal (body casing) is in the correct position.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Screw in body casing to the stop.
→ Close the device (wrench*: 674077 ).
Description of workflow for teach function:
The status LED blinks red when the teach function is running.
• The end position is scanned in.
• The pilot valve switches.
• The actuator moves automatically to the upper position.
• The upper end position is scanned in.
• The pilot valve is switched off.
• The actuator moves to the lower position.
• In order to determine the opening time and the closing time, the actuator moves again into the upper and lower end position.
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* The wrench (674077) is available from your Bürkert sales office..
english
Type 8691 REV.2
Start-up
10.1.2 Manual teach function
For devices without pilot valve:
The end positions are captured and saved manually by the user.
With the IO-Link variant, the teach function can also be started with an acyclic IO-Link parameter (see parameter list) or with the Bürkert Communicator.
With the büS variant, the teach function can also be started with the Bürkert Communicator.
Essential requirements:
• The device is mounted on the actuator.
• The supply voltage is connected.
• The compressed air supply is connected.
• So that the correct reference conditions are identified, the pilot pressure must correspond to the oper ating conditions.
• Provide the possibility for the user to switch the pneumatic actuator (open and closed).
Transparent cap
Body casing
Basic housing
Actuator
Figure 27: Opening or closing the device
Closing device:
Seal
(body casing)
NOTE
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When opening or closing the device, do not press against the actuator, but against the basic housing.
→ Screw off the body casing by turning counterclockwise.
Pilot valve LED (V)
Status LED (red)
Status LED (green)
Button to start the teach function
Figure 28: Starting teach function
→ Air bleed the pneumatic actuator: move to the unactuated end position.
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Type 8691 REV.2
Start-up
→ Hold down the button to start the teach function for at least 10 s.
After 5 s, the red status LED will start blinking. Keep the button pressed down. After a further 5 s, the red
LED blinks very quickly. Only then release the button.
Status LED red blinks once every second: The manual teach function is active.
→ Check whether the pneumatic actuator is in the deaerated, unactuated end position.
→ This end position is confirmed by briefly pressing the button.
Yellow pilot valve LED is lit.
→ Move the pneumatic actuator into the aerated, switched end position.
→ This end position is confirmed by briefly pressing the button.
Yellow pilot valve LED is not lit.
→ Air bleed the pneumatic actuator: move to the unactuated end position.
Yellow pilot valve LED is lit.
To determine the opening times and closing times, aerate and deaerate the pneumatic actuator:
Measurement of opening time (Opening_Time):
→ Move the pneumatic actuator into the aerated, switched end position.
Yellow status LED is not lit.
Measurement of closing time (Closing_Time):
→ Air bleed the pneumatic actuator: move to the unactuated end position.
When the red status LED stops lighting, the teach function is terminated.
The end positions of the valve have been identified and saved.
Note: If the red LED is lit, the manual teach function is defective and must be repeated.
→ Check that the seal (body casing) is in the correct position.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Screw in body casing to the stop.
→ Close the device (wrench*: 674077).
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* The wrench (674077) is available from your Bürkert sales office.
english
Type 8691 REV.2
Start-up
10.2 Setting with Bürkert Communicator
The Bürkert Communicator can be used to make all settings on the device.
The settings in the Bürkert Communicator can be found in the operating manual.
10.2.1 Connecting IO-Link device with Bürkert Communicator
Required components:
• Communications software: Bürkert Communicator for PC
• büS standard set (see accessories)
• büS adapter for büS service interface (see accessories)
• If necessary, a büS cable extension (see accessories)
Transparent cap
Closing device:
Seal
(body casing)
Body casing
Basic housing
Actuator
Figure 29: Opening or closing the device
NOTE
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When opening or closing the device, do not press against the actuator, but against the basic housing.
→ Screw off the body casing by turning counterclockwise.
Pilot valve LED (V)
Status LED (red)
Status LED (green) büS service interface
(micro USB plug)
Button to start the teach function
Figure 30: büS service interface
→ Insert micro USB plug in büS service interface.
→ Establish connection to PC with büS stick.
→ Starting Bürkert Communicator.
→ Implementing settings.
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Type 8691 REV.2
Start-up
10.2.2 Connecting büS device with Bürkert Communicator
Required components:
• Communications software: Bürkert Communicator for PC
• büS standard set (see accessories)
→ Establish connection to PC with büS stick.
→ Starting Bürkert Communicator.
→ Implementing settings.
10.3 IO-Link
10.3.1 Information, IO-Link
IO-Link is an internationally standardized IO technology (IEC 61131-9) to enable sensors and actuators to communicate.
IO-Link is a point-to-point communication with 3-wire connection technology for sensors and actuators and unshielded standard sensor cables.
10.3.2 Technical specifications, IO-Link
IO-Link specifications
Supply
Port Class
SIO mode
IODD file
VendorID
DeviceID
Transmission speed
M-sequence type in Operate Mode
Min. cycle time
Data storage
Max. cable length
V1.1.2
via IO-Link (M12 x 1, 4-pin, A-coded)
A yes, optionally 2xDO (end positions), or1xDI+1xDO (switch valve + one end position)
Download from: www.burkert.com
/ Type 8691 / Software .
0x78, 120 see IODD file
COM3 (230.4 kbit/s)
TYPE_2_V
1 ms
Yes
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Type 8691 REV.2
Start-up
10.3.3 Interfaces, IO-Link
Supply
IO-Link, SIO mode
Control head
8691 IO-Link
Figure 31: Interfaces büS service interface büS service interface
(micro USB plug)
Figure 32: büS service interface
10.3.4 Configuration of the fieldbus
The required start-up files and the description of the process data and acyclic parameters are available on the Internet.
Download from: www.burkert.com
/ Type 8691 / Software .
english
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Type 8691 REV.2
Start-up
10.4 büS
10.4.1 Information, büS
büS is a system bus developed by Bürkert with a communication protocol based on CANopen.
10.4.2 Interfaces, büS
Supply büS
Control head
8691 büS
Figure 33: Interfaces
10.4.3 Configuration of the fieldbus
The required start-up files and the description of objects are available on the Internet.
Download from: www.burkert.com
/ Type 8691 / Software .
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Type 8691 REV.2
Operation
11 OPERATION
11.1
Display device status, IO-Link and büS
Following device statuses are indicated with LEDs:
• Pilot valve LED: Activation of pilot valve
• Device status LED: Valve position, errors, warnings
• Status LED green: IO-Link mode
• Status LED red: Teach function, error
Device status LED (Top-LED)
Pilot valve LED (V)
Status LED green (bus)
Status LED red (bus)
Figure 34: Display device status
Note the following when opening and closing the transparent cap:
NOTE
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When opening or closing the device, do not press against the actuator, but against the basic housing.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Screw in transparent cap to the stop.
Transparent cap
Body casing
Closing device:
Seal
(body casing)
Basic housing
Figure 35: Opening or closing the device
Actuator
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Type 8691 REV.2
Operation
11.1.1
Pilot valve LED
Color yellow yellow
Table 6:
Status is lit is not lit
Pilot valve LED
Description
Pilot valve is activated
Pilot valve is not activated
Color green green green
Table 7:
Color red red red
Table 8:
11.1.2
Status LED, green and red
Status is lit is not lit blinking
IO-Link status LED, green
Description
IO-Link communication inactive
IO-Link communication active
Status is lit is not lit blinking
IO-Link status LED, red
Description
Teach function error
After restart or successful teach function
Teach function active
11.1.3
Device status display
The device status LEDs (top LED) show the device status.
The user can set the following LED modes for the display of device status and valve position.
• Valve mode
• Valve mode with error messages
• Valve mode with error messages and warnings (factory setting)
• NAMUR mode
• LED off
IO-Link:
The LED mode and the colors of the valve position can be set with an acyclic IO-Link parameter (see parameter list) or with the Bürkert Communicator.
büS:
The LED mode and the colors of the valve position can be set with the Bürkert Communicator.
The description for setting the LED mode can be found in the section "Setting the LED mode" in the operating manual.
english
Type 8691 REV.2
Operation
11.1.3.1 Valve mode
Displays in valve mode:
• Valve position: open, half-way, closed
Valve position
Open
Half-way
Closed
Table 9:
Valve position status, color is lit yellow*
LED off* is lit green*
Valve mode
11.1.3.2 Valve mode + errors
Displays in valve mode + errors:
• Valve position: open, half-way, closed
• Device status: Error
Valve position
Open
Half-way
Closed
Table 10:
Valve position status, color is lit yellow*
LED off* is lit green*
Valve mode + errors
Device status: Error status, color blinks alternately with color of valve position blinks alternately with color of valve position blinks alternately with color of valve position
11.1.3.3 Valve mode + errors + warnings
Displays in valve mode + errors + warnings:
• Valve position: open, half-way, closed
• Device status: Error
• Device status: Displays of NAMUR mode
If several device statuses exist simultaneously, the device status with the highest priority is displayed.
Valve position
Open
Half-way
Closed
Table 11:
Valve position status, color is lit yellow*
LED off* is lit green*
Valve mode + errors + warnings, part 1
Device status: Error status, color blinks alternately red and yellow* blinks alternately red and white* blinks alternately red and green*
* Factory setting, selectable colors for the valve position: Off, white, green, blue, yellow, orange, red
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Type 8691 REV.2
Operation
Valve position
Open
Half-way
Closed
Table 12:
Valve position status, color is lit yellow*
LED off* is lit green*
Device status: Function control status, color blinks alternately orange and yellow* blinks alternately orange and white* blinks alternately orange and green*
Valve mode + errors + warnings, part 2
Valve position
Open
Half-way
Closed
Table 13:
Valve position status, color is lit yellow*
LED off* is lit green*
Device status: Out of specification status, color blinks alternately yellow and yellow* blinks alternately yellow and white* blinks alternately yellow and green*
Valve mode + errors + warnings, part 3
Valve position
Open
Half-way
Closed
Table 14:
Valve position status, color is lit yellow*
LED off* is lit green*
Device status: Maintenance required status, color blinks alternately blue and yellow* blinks alternately blue and white* blinks alternately blue and green*
Valve mode + errors + warnings, part 4
For error messages and warning messages, the LEDs are briefly switched off between the change of the colors.
For localizations, the colors are only shown momentarily.
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* Factory setting, selectable colors for the valve position: Off, white, green, blue, yellow, orange, red english
Type 8691 REV.2
Operation
11.1.3.4 NAMUR mode
The device status LEDs (top LED) show the device status.
The display elements change color in accordance with NAMUR NE 107.
If several device statuses exist simultaneously, the device status with the highest priority is displayed. The priority is determined by the severity of the deviation from controlled operation (red LED = failure = highest priority).
Status display in accordance with NE 107, edition 2006-06-12
Color Color code Status Description
Red 5 Outage, error or malfunction
Normal operation is not possible due to a malfunction in the device or on its peripheral equipment.
Orange 4
Yellow
Blue
3
2
Function check
Out of specification
Work is being carried out on the device; normal operation is therefore temporarily not possible
Ambient conditions or process conditions for the device are outside the specified area.
Maintenance required The device is in normal operation, although a function is briefly restricted.
Green 1 Diagnostics active
→ Service device.
Device is operating perfectly. Status changes are indicated in different colors.
Messages are transmitted via a fieldbus if connected.
Table 15: Description of the colors
11.2
Switching the device manually with pilot valve
The device can be switched manually with the pilot valve when the control air is connected.
Opening the device:
Transparent cap
Body casing
Basic housing
Actuator
Figure 36: Opening the device
NOTE
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When opening or closing the device, do not press against the actuator, but against the basic housing.
→ Screw off the body casing by turning counterclockwise.
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Switching the device:
Manual override
Pilot valve
44
Basic housing
Figure 37: Manually switching the device
NOTE
Damage to the manual override by pressing and rotating at the same time.
▶ Do not simultaneously press and turn manual override.
Switching the positions for manual override:
Lock function:
90° rotation = maintained-contact switching
Normal position
Push function:
Pressing = brief actuation
Figure 38: Manual override
→ Switch manual override with a screwdriver (button or click).
Closing the device:
Body casing
Seal
(body casing)
Basic housing
Figure 39: Closing the device
→ Check that seal is in the correct position.
NOTE
Damage or malfunction due to ingress of dirt or moisture.
To observe the degree of protection IP65 or IP67:
▶ Screw in body casing to the stop.
→ Close the device (wrench*: 674077 ).
* The wrench (674077) is available from your Bürkert sales office..
english
Type 8691 REV.2
Operation
Type 8691 REV.2
Maintenance
12 MAINTENANCE
12.1
Servicing the air intake filter
To protect the pilot valve and actuator, the pilot air is filtered.
Air flows through the air intake filter from inside to outside through the filter fabric in its pre-installed state.
DANGER!
Risk of injury if not maintained correctly.
▶ Only trained and qualified personnel may perform maintenance.
▶ Perform maintenance with suitable tools only.
Push-in connector
O-ring
Air intake filter
Figure 40: Servicing the air intake filter
DANGER!
Risk of injury from high pressure and discharge of medium.
▶ Before working on the device or system, switch off the pressure. Vent or drain lines.
→ Unclamp the push-in connector by pressing the collet, then pull out the air intake filter. If necessary, use a suitable tool between the recesses in the head of the air intake filter.
→ Clear or (if appropriate) replace the filter.
→ Check the intside O-ring and clean if necessary.
→ Push the air intake filter into the push-in connector as far as it will go.
→ Ensure that the air intake filter is securely seated.
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Type 8691 REV.2
Deinstallation
13 DEINSTALLATION
13.1
Safety instructions deinstallation
DANGER
Risk of injury from high pressure and discharge of medium.
▶ Before working on the device or system, switch off the pressure. Vent or drain lines.
DANGER
Risk of injury from electric shock.
▶ Before working on the device or system, switch off the power supply. Secure against reactivation.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
WARNING
Risk of injury due to improper deinstallation.
▶ Only trained technicians may perform deinstallations.
▶ Perform deinstallations with suitable tools only.
WARNING
Risk of injury due to unintentional activation and uncontrolled start-up of the system.
▶ Secure system against unintentional activation.
▶ Ensure that the system does not start up in an uncontrolled manner.
46 english
Type 8691 REV.2
Deinstallation
13.2
Deinstallation
Body casing
Basic housing
Fastening screws
Circular plug-in connector
Pilot air port
Exhaust air port
Integrated pilot air duct (Element)
Figure 41: Deinstalling the device
Pneumatic connection
Actuator External pilot air duct (Classic)
Pneumatically deinstalling the device
→ Disconnect pilot air port.
→ When exhaust air port connected: Disconnect exhaust air port:
→ With external control air duct (Classic):
Disconnect the pneumatic connection to the actuator.
Electrically deinstalling the device
Devices with circular plug-in connector:
→ Disconnect the circular plug.
Mechanically deinstalling the device
→ Release the fastening screws.
→ Pull off the device by lifting upward.
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Type 8691 REV.2
Spare parts, accessories
14 SPARE PARTS, ACCESSORIES
Designation
Special wrench
Wrench for opening/closing the transparent cap
Communication software Bürkert Communicator
USB-büS interface set: büS standard set (büS stick + 0.7 m cable with M12 plug) büS adapter for büS service interface
(M12 on büS service interface Micro-USB) büS cable extension (M12 pin to M12 socket), length 1 m büS cable extension (M12 pin to M12 socket), length 3 m büS cable extension (M12 pin to M12 socket), length 5 m büS cable extension (M12 pin to M12 socket), length 10 m
Table 16: Accessories
Order no.
665702
674077
Information at www.burkert.com
772551
773254
772404
772405
772406
772407
14.1
Communications software
The Bürkert Communicator PC program is designed for communication with Type 8691 devices with fieldbus control via DeviceNet, IO-Link or büS. Devices from year of construction April 2014 support the full range of functions.
For questions regarding compatibility, please contact the Bürkert Sales Center.
A detailed description for installing and operating the software can be found in the associated operating instructions.
Download the software from: www.burkert.com
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Type 8691 REV.2
Transportation, storage, disposal
15 TRANSPORTATION, STORAGE, DISPOSAL
NOTE
Damage in transit due to inadequately protected devices.
▶ Protect the device against moisture and dirt in shock-resistant packaging during transportation.
▶ Observe permitted storage temperature.
NOTE
Incorrect storage may damage the device.
▶ Store the device in a dry and dust-free location.
▶ Storage temperature: -20 to +65 °C
NOTE
Damage to the environment caused by device components contaminated with media.
▶ Dispose of the device and packaging in an environmentally friendly manner.
▶ Observe applicable disposal and environmental regulations.
Observe national regulations on the disposal of waste.
english
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Type 8691 REV.2
www.burkert.com
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