Burkert 8681 User manual

Operating Instructions
Type 8681
Control Head
Designs: 24 V DC, 120 V AC, AS-i,
DeviceNet, IO-Link, büS/CANopen

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous resérve de modication techniques.
© Bürkert Werke GmbH, 2010 - 2020
Operating Instructions 2004/07_EN_00806150 / Original DE

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Control Head Type 8681
Contents
1 OPERATING INSTRUCTIONS ..............................................................................................................10
1.1 Symbols......................................................................................................................................10
1.2 Denitionofterms:“device”and“büS”....................................................................................10
2 AUTHORISED USE ...............................................................................................................................11
3 BASIC SAFETY INSTRUCTIONS .........................................................................................................12
4 GENERAL INFORMATION....................................................................................................................14
4.1 Contactaddress.........................................................................................................................14
4.2 Warranty .....................................................................................................................................14
4.3 Informationandinstructionson the Internet ............................................................................14
5 SYSTEM DESCRIPTION.......................................................................................................................15
5.1 Intendedapplicationarea..........................................................................................................15
5.2 Generaldescription....................................................................................................................15
5.3 Functions/options/variants....................................................................................................16
5.3.1 Structure of the control head..........................................................................................16
5.3.2 Fluid diagrams Type 8681 – examples............................................................................17
5.3.3 Number of solenoid valves .............................................................................................18
5.3.4 Pneumatic interfaces ......................................................................................................19
5.3.5 Magnetic and mechanical manual override....................................................................19
5.3.6 Position measuring system.............................................................................................19
5.3.7 Other features.................................................................................................................20
6 TECHNICAL DATA ................................................................................................................................21
6.1 Operatingconditions .................................................................................................................21
6.2 Conformity/standards..............................................................................................................21
6.3 Type label ..................................................................................................................................22
6.4 Additionalwarningsigns ...........................................................................................................23
6.5 Mechanicaldata.........................................................................................................................24
6.6 Pneumaticdata.......................................................................................................................... 26
6.7 Positionmeasuringsystemdata ...............................................................................................27
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Control Head Type 8681

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6.8 Factorysettingsinthermware................................................................................................28
6.8.1 Feedbackelds(positionmeasuringsystem).................................................................28
6.8.2 Service/maintenancenotication(maintenancerequest).............................................29
6.8.3 Manualoverridefunction(magnetic) ..............................................................................29
6.9 Resettingthedevice(DeviceReset) .........................................................................................30
7 ASSEMBLY ...........................................................................................................................................31
7.1 Safetyinstructions .....................................................................................................................31
7.2 Assemblyofthecontrolhead....................................................................................................31
7.2.1 Hubange/Adapter ......................................................................................................32
7.2.2 Assemblysequenceontheexampleofadouble-seatedvalve .....................................33
7.2.3 Realignment of the control head ....................................................................................33
7.2.4 Assembly of the pneumatic and electrical connections .................................................33
7.2.5 Recommended auxiliary materials..................................................................................34
8 OPENING AND CLOSING THE HOUSING ...........................................................................................35
8.1 Safetyinstructions .....................................................................................................................35
8.2 Openingandclosingthehousing .............................................................................................35
8.2.1 Opening the housing ......................................................................................................35
8.2.2 Closing the housing........................................................................................................36
9 PNEUMATIC INSTALLATION................................................................................................................37
9.1 Safetyinstructions .....................................................................................................................37
9.2 Pneumaticconnectionofthecontrolhead ..............................................................................37
9.3 Flowrestrictionfunctionofthesolenoidvalves.......................................................................38
10 24VDC-DESIGN................................................................................................................................ 40
10.1 Electricalconnectionoptions...................................................................................................40
10.2 Electricaldata ............................................................................................................................40
10.3 Designaid...................................................................................................................................42
10.4 Safetyinstructions .....................................................................................................................43
10.5 Electricalinstallation/start-up .................................................................................................43
10.5.1 Cable gland with screw terminals...................................................................................43
10.5.2 Multi-pole connection.....................................................................................................46
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Control Head Type 8681

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11 120VAC-DESIGN .............................................................................................................................47
11.1 Electricalconnectionoptions...................................................................................................47
11.2 Electricaldata ............................................................................................................................47
11.3 Designaid...................................................................................................................................48
11.4 Safetyinstructions .....................................................................................................................49
11.5 Electricalinstallation/start-up .................................................................................................50
12 ASINTERFACE-DESIGN....................................................................................................................53
12.1 Denition ....................................................................................................................................53
12.2 ElectricalconnectionoptionsforASinterface........................................................................54
12.3 Numberofconnectablecontrolheads .....................................................................................54
12.4 Maximumlengthofthebusline ................................................................................................54
12.5 Electricaldata ............................................................................................................................55
12.6 Designaid...................................................................................................................................57
12.7 Safetyinstructions .....................................................................................................................58
12.8 ElectricalinstallationoftheASinterface..................................................................................59
12.9 Programmingdata .....................................................................................................................61
13 DEVICENET-DESIGN .........................................................................................................................62
13.1 Denition ....................................................................................................................................62
13.2 Electricalconnectionoption.....................................................................................................62
13.3 DeviceNetspecication.............................................................................................................62
13.3.1 TotallinelengthandmaximumlinelengthaccordingtoDeviceNetspecication .........63
13.3.2 Drop line length...............................................................................................................63
13.4 Electricaldata ............................................................................................................................64
13.5 Safetypositionifthebusfails ...................................................................................................64
13.6 Designaid...................................................................................................................................65
13.7 Safetyinstructions .....................................................................................................................66
13.8 Electricalinstallation-DeviceNet .............................................................................................66
13.9 NetworktopologyofaDeviceNetsystem ................................................................................68
13.10ConguringtheDeviceNetaddress/baudrate.......................................................................68
13.10.1Settings of the DeviceNet address .................................................................................69
13.10.2Setting the baud rate ......................................................................................................70
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Control Head Type 8681