Burkert 8691 User manual

Operating Instructions
Type 8691 REV.3
Control Head

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2022 - 2023
Operating Instructions 2303/01_EU-EN_00815428 / Original DE

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Control head Type 8691 REV.3
Table of conTenTs
1ABOUT THESE INSTRUCTIONS ............................................................................................................7
1.1 Symbols........................................................................................................................................7
1.2 Denitionofterms........................................................................................................................7
2INTENDED USE ......................................................................................................................................8
3BASIC SAFETY INSTRUCTIONS ...........................................................................................................9
4GENERAL INFORMATION....................................................................................................................10
4.1 Contact address.........................................................................................................................10
4.2 Warranty .....................................................................................................................................10
4.3 InformationontheInternet........................................................................................................10
4.4 Trademarks.................................................................................................................................10
5PRODUCT DESCRIPTION....................................................................................................................11
5.1 Structure.....................................................................................................................................11
5.1.1 Structure, integrated pilot air duct (21xx, Element) ....................................................11
5.1.2 Structure, external pilot air duct (20xx, Classic) .........................................................11
5.1.3 Variants .......................................................................................................................12
5.2 Function......................................................................................................................................12
6TECHNICAL DATA ................................................................................................................................13
6.1 Standardsanddirectives...........................................................................................................13
6.2 Approvals ...................................................................................................................................13
6.3 Type label ...................................................................................................................................14
6.3.1 Type label standard ....................................................................................................14
6.3.2 UL type label...............................................................................................................14
6.3.3 UL additional label......................................................................................................14
6.4 Operatingconditions .................................................................................................................14
6.4.1 Fluidic data .................................................................................................................15
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Inhaltsverzeichnis
6.4.2 Electrical data .............................................................................................................15
6.4.2.1 Electricaldatawithouteldbuscommunication.....................................................15
6.4.2.2 Electrical data, IO-Link ...........................................................................................16
6.4.2.3 Electrical data, büS.................................................................................................16
6.4.2.4 Electrical data, AS-Interface...................................................................................17
6.5 Mechanicaldata.........................................................................................................................17
6.5.1 Safety end positions...................................................................................................18
6.6 Communication..........................................................................................................................18
6.6.1 IO-Link ........................................................................................................................18
7MECHANICAL INSTALLATION .............................................................................................................19
7.1 Safetyinstructions .....................................................................................................................19
7.2 Installingdeviceswithintegratedpilotairduct(21xx,Element) .............................................19
7.3 Installingdeviceswithexternalcontrolairduct(20xx,Classic) ..............................................22
7.4 Aligning(turning)thedeviceandpositionofconnections.......................................................26
7.4.1 Turning the actuator, devices with hexnut ..................................................................27
7.4.2 Turning the actuator, devices without hexnut.............................................................28
7.4.3 Turning the device ......................................................................................................29
7.5 Installationonrotaryactuatorsfromthirdpartymanufacturers...............................................30
8PNEUMATIC INSTALLATION................................................................................................................31
8.1 Safetyinstructions .....................................................................................................................31
8.2 Connectingthedevicepneumatically.......................................................................................31
9ELECTRICAL INSTALLATION...............................................................................................................32
9.1 Safetyinstructionsforelectricalinstallation.............................................................................32
9.2 Electricalinstallationwithouteldbuscommunication............................................................32
9.2.1 Device with cable gland..............................................................................................32
9.2.2 Device with circular plug-in connector .......................................................................34
9.3 Connectingthedeviceelectrically,IO-Link,portclassA ........................................................34
9.4 Connectingthedeviceelectrically,IO-Link,portclassB ........................................................35
9.5 Connectingthedeviceelectrically,büS ...................................................................................35
9.6 Connectingthedeviceelectrically,AS-Interface .....................................................................36
9.7 Connectingthedeviceelectrically,AS-Interfacewithmulti-polecableandatcable
terminal.......................................................................................................................................36
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10 START-UP ............................................................................................................................................. 37
10.1 Invertprocessvalvedirection ...................................................................................................37
10.2 Teachfunction:Determineendpositionsandsavethese,REV.3 ...........................................40
10.2.1 Start automatic teach function ...................................................................................40
10.2.2 Start manual teach function .......................................................................................42
10.2.3 Teach-in-operation function........................................................................................44
10.3 SettingwithBürkertCommunicator..........................................................................................44
10.3.1 Connecting the device with Bürkert Communicator ..................................................44
10.4 IO-Link ........................................................................................................................................46
10.4.1 Information, IO-Link....................................................................................................46
10.4.2 Congurationoftheeldbus ......................................................................................46
10.5 büS..............................................................................................................................................46
10.5.1 Information, büS .........................................................................................................46
10.5.2 Congurationoftheeldbus ......................................................................................46
10.6 AS-Interface ...............................................................................................................................47
10.6.1 Certication ................................................................................................................47
10.6.2 Programming data ......................................................................................................47
11 OPERATING AND DISPLAY ELEMENTS .............................................................................................48
11.1 Operatingstate ............................................................................................................................. 49
11.2 Functionsoftheoperatinganddisplayelements ....................................................................50
11.3 Statusindicator..........................................................................................................................53
11.4 DescriptionoftheLEDmodes ..................................................................................................53
11.4.1 Valve mode .................................................................................................................53
11.4.2 Valve mode with error messages (valve mode + errors).............................................54
11.4.3 Valve mode with error messages and warnings (valve mode + warnings) .................54
11.4.4 NAMUR mode.............................................................................................................56
11.4.5 Fixed colour ................................................................................................................56
11.4.6 LEDo........................................................................................................................56
11.5 SettingtheLEDmode,statusindicator....................................................................................57
11.6 Switchingthedevicemanuallywithpilotvalve ........................................................................58
12 MAINTENANCE ....................................................................................................................................59
12.1 Servicingtheairintakelter ......................................................................................................59
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13 DEINSTALLATION.................................................................................................................................60
13.1 Safetyinstructionsdeinstallation ..............................................................................................60
13.2 Deinstallation..............................................................................................................................61
14 SPAREPARTS,ACCESSORIES...........................................................................................................62
14.1 Communicationssoftware.........................................................................................................62
15 TRANSPORTATION,STORAGE ...........................................................................................................63
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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 Denition of terms
In these instructions the term “device” denotes the following device types:
Control head Type 8691 REV.3
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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Intended use
2 INTENDED USE
ThecontrolheadType8691REV.3isdesignedtobemountedonpneumaticactuatorsofprocess
valvesforthecontrolofmedia.Thepermitteduid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 autho-
rized by Bürkert.
▶Do not use the device outdoors without protection from the weather.
▶In potentially explsive atmosphere, 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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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-specic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othepressure.Ventordrainlines.
DANGER
Riskofinjuryfromelectricshock.
▶Beforeworkingonthedeviceorsystem,switcho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ammablemediaintothedeviceconnections.
▶Donotfeedanyuids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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General information
4 GENERAL INFORMATION
4.1 Contact address
Germany
Bürkert Fluid Control System
Chr.-Bürkert-Str. 13-17
D-74653Ingelngen
E-mail: [email protected]
International
Contactaddressescanbefoundonthenal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 specied 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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Product description
5 PRODUCT DESCRIPTION
5.1 Structure
Themodulardesignofthedevicesupportsvariouscongurationsandvariants.
Pilot LED (yellow)
ASi PWR LED (green)*
ASi FAULT LED (red)*
Status indicator (RGB LED)
Manual LED (red)
Inv.ValveDir LED (green)
büS service interface
Key 1
Key 2
View without transparent cap and body casing:
Electrical connection
Pressure limiting valve
Exhaust air port, label: 3
Pilot air port, label: 1
*only for AS-Interface variant
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lter
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).
Transparent cap
Body casing
Airintakelter
Fastening screw
Basic housing
Pilot air outlet 2-1
Pilot air outlet 2-2
Figure 3: Structure, external pilot air duct
Sothatthepilotaircanbeexternallyconnectedtotheactuator,thisstructurehasadierentbasichousing.
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Product description
5.1.3 Variants
Communication possible via:
•withouteldbuscommunication:24VdevicewithdigitalinputsandoutputsandbüSserviceinterface
•AS Interface
•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conguration.
Colored LEDs indicate the device status.
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Technical data
6 TECHNICAL DATA
6.1 Standards and directives
The device complies with the relevant EU harmonisation legislation. In addition, the device also complies
with the requirements of the laws of the United Kingdom.
The harmonised standards that have been applied for the conformity assessment procedure are listed in the
current version of the EU Declaration of Conformity/UK Declaration of Conformity.
6.2 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potentiallyexplsiveatmosphere.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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Technical data
6.3 Type label
6.3.1 Type label standard
8691 büS
single act pilot 3,0
Pmax 7bar
Tamb -10 - +55°C REV.2
Ser.-Nr. 001000
00179024
D-74653 Ingelfingen
W14UN
Order number, manufacture code
Operatingvoltageoreldbuscontrol
Max. operating pressure
Type Control function, pilot valve
Barcode
Serial number, CE marking
Ambient temperature, version
Figure 4: Type label standard (example)
6.3.2 UL type label
8691 -E3-...-0
single act pilot 3,0 24V
Pmax 7bar
Tamb -10 - +55°C REV.2
Ser.-Nr. 001000
00179024
D-74653 Ingelfingen
W14UN
Order number, manufacture code
Features of the type code applicable to UL and ATEX
Max. operating pressure
Type Control function, pilot valve,
supply voltage pilot valve
Barcode
Serial number, CE marking
Ambient temperature, version
Figure 5: UL type label (example)
6.3.3 UL additional label
Type 4X enclosure
NEC Class 2 only
Supply voltage: 24 V Supply voltage device
Circuit with limited power
Degree of protection
Figure 6: UL additional label (example)
6.4 Operating conditions
Ambient temperature See type label
Degree of protection
Evaluated by manufacturer: IP65, IP67 as per EN 60529*
Evaluated by UL: UL type 4x Rating, indoor only*
Operating altitude up to 2000 m above sea level
Relative air humidity max. 90% at 55 °C (non condensing)
*Only if cables, plugs and sockets have been connected correctly and in compliance with the exhaust air concept see chapter “Pneumatic
installation”.
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Technical data
6.4.1 Fluidic data
Control medium Neutral gases, air
Quality classes as per 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 lowest operating temperature
Oil content Class X Max. 25 mg/m³
Pressure range 3–7 bar
Temperature range -10 to +50 °C
Pilotvalveairowrate 250 lN/ min (for aeration and deaeration)
(QNn-valueaccordingtodenitionforpressuredropfrom7to6bar
absolute)
Connections Internal thread G 1/8 “
6.4.2 Electrical data
NOTE
ForvariantswithcULusapproval,pleasenote:
▶Only use circuits of limited power as per UL NEC Class 2.
6.4.2.1 Electrical data without eldbus communication
Protection class IIIasperDINEN61140(VDE0140-1)
Connection
Supply 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-pin)
Communication büS service interface
Operating voltage 24 V ±25 %, max. residual ripple 10 %
Current consumption 90 mA @18 V + current load for an active digital output
Digital output 2x24V PNP (standard variant, optionalyl also as NPN)
Output current max. 100 mA per output
Output voltage Low = GND + max. 2 V and
High = operating voltage – max. 2 V
Digital input 24 V potential-free (suitable for PNP and NPN control)
Output current max. 9 mA @30 V (as per EN 61131-2 Type 1)
Output voltage Low = 0...5 V and
High = 15...30 V (as per EN 61131-2 Type 1)
Power consumption incl. load on
one active digital output
2 W / 5 W
Communication software Bürkert Communicator
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Technical data
6.4.2.2 Electrical data, IO-Link
Protection class IIIasperDINEN61140(VDE0140-1)
Connection
Supply, IO-Link Circular plug-in connector M12 x 1, 4-pin, port class A
Circular plug-in connector M12 x 1, 5-pin, port class B
Communication büS service interface
Operating voltage
Systemsupply(Pin1+3) 24 V ±25%(accordingtospecication)
only for port class B:
Actuatorsupply(Pin2+5)* 24 V ±25%(accordingtospecication)
Current consumption
Systemsupply(Pin1+3) For port class A max. 150 mA (only with installed pilot valves)
For port class B max. 100 mA
only for port class B:
Actuatorsupply(Pin2+5) max. 50 mA
Communication software Bürkert Communicator
*Actuator supply is galvanically isolated from system supply in accordance with IEC 60664 and for electrical safety in accordance with
SELV from IEC 61010-2-201
6.4.2.3 Electrical data, büS
Protection class 3asperDINEN61140(VDE0140-1)
Connection Circular plug-in connector M12 x 1, 5-pin
Operating voltage 18–30 V (accordingtospecication)
Max. current consumption 120mA@18V(incl.inrushcurrentpilotvalvefor200ms)
Current consumption input during
normal operation
95mA@18V
(after current reduction,
pilotvalveafter200ms
and 1 end position reached)
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Technical data
6.4.2.4 Electrical data, AS-Interface
Protection class IIIasperDINEN61140(VDE0140-1)
Connection
Supply, AS-Interface Circular plug-in connector M12 x 1, 4-pin
Communication büS service interface
Operating voltage
System supply AS-Interface
(Pin 1+3)
viaAS-Interfacepowersupplyunitaccordingtospecicationwith
29.5V...31.6V
only for variant with additional
actuator supply (AUX Power) (Pin
2+4)*
24 V ±10 %
Power consumption
Output pilot valvel approx. 0.8 W incl. integrated watchdog function
Current consumption
System supply
(Pin 1+3)
Without additional actuator supply and installed pilot valve
max. 110 mA
With additional actuator supply
(AUX power) or without pilot valve
max. 60 mA @23 V
only with additional actuator supply
(AUX Power) (Pin 2+4) max. 50 mA @24 V ±10 %
Communication software Bürkert Communicator
* The power supply unit must include a secure disconnection in accordance with IEC 364-4-41 (PELV or SELV)
6.5 Mechanical data
Dimensions See data sheet
Body material
exterior: PPS, PC, VA
Seal material
external:
internal:
EPDM
NBR
Stroke range of valve spindle 2–47 mm
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Technical data
6.5.1 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 pneumatic
up
down
single-acting
control function A
down down
up
down
single-acting
control function B
up up
up
down
double-acting
control function I
down notdened
Table 1: Safety end positions
6.6 Communication
6.6.1 IO-Link
Port class A B
IO-Linkspecication V1.1.2
Supply via IO-Link (M12 x 1, 5-pin, A-coded)
SIO-Mode No
IODD-File see internet
VendorID 0x0078, 120
DeviceID seeIODDle
ProductID 8691 Class A 8691 Class B
Transmission speed COM3 (230,4 kbit/s)
PD Input Bits 56
PD Output Bits 8
M-sequence Cap. 0x0D
Min. cycle time 5ms
Data storage Yes
Max. cable length 20m
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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o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actuatorwhenweldingbodies.
Observe the following during installation on process valves with welded connection:
▶Observe the installation instructions for the operating manual of the process valve.
▶Before installing the device, weld the process valve into the pipe system.
english
Type 8691 REV.3

20
Mechanical installation
1. Installing the switch spindle
Transparent cap
Actuator
Pilot air ports
(plug-in connectors with collets or
threaded bushings)
Position indicator
Figure 7: 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.
Spindle extension
Guide element
Actuator cover
Lip seal
Puck
Switch spindle
Max. 5 Nm
Max. 1 Nm
O-ring
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.
english
Type 8691 REV.3