Burkert Type 8681 Bedienungsanleitung Seite 1

Operating InstructionsType 8681 Control Head

10Basic Safety InstructionsBASIC SAFETY INSTRUCTIONS3. These safety instructions do not make allowance for any contingencies and events which may aris

11Basic Safety InstructionsNOTE! Connection of the Control HeadDo not connect any mechanically rigid connection parts, in particular those with long l

12Basic Safety InstructionsGENERAL INFORMATION4. Contact address4.1. Bürkert Fluid Control Systems Sales Center Christian-Bürkert-Straße 13-17 D-74653

13System DescriptionSYSTEM DESCRIPTION5. Intended Application Area5.1. The Control Head Type 8681 has been designed for use as actuation of pneumatica

14System Descriptionshort mechanical and pneumatic installation times.•For increased safety requirements (e.g. in the explosion-risk area) a seal or

15System Description5.4.2. Fluid diagramControl Head Type 8681 - Fluid diagram (with restriction capability for each solenoid valve):Model with three

16System DescriptionNumber of solenoid valves5.4.3. The control head for process valves has been designed for single-acting and double-acting valve ac

17System DescriptionPosition Measuring System5.4.6. The switching positions of the process valves are reported to the higher-level control by feedbac

18Technical Data6. TECHNICAL DATAOperating Conditions6.1. DANGER!Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)

19Technical DataMechanical data6.3. Cover safeguard:- Seal max Ø2 and / or- plastic self-cutting screw 3.0x10M16x1.5 (2x)G1/4 (2x)G1/8 (3x)Dimension

We reserve the right to make technical changes without notice.Technische Änderungen vorbehalten.Sous resérve de modification techniques.© 2010 - 2011 B

20Technical Data6.4. Pneumatic DataControl medium: oil-free and dry air, neutral gases Quality classes in accordance with DIN ISO 8573-1 (5 µ

21Technical Data6.5. Position Measuring System DataStroke range (measuring range): 0 ... 80 mm Resolution: ≤ 0.1 mm Total fault:

22Technical Data6.6. Factory Settings in the FirmwareThe control head is supplied with the following factory settings of the firmware: The service int

23Installation7. INSTALLATIONSafety instructions7.1. DANGER!Risk of injury from high pressure in the equipment!Before loosening pneumatic lines and v

24Installationscrews M5), which engage in the middle groove of the hub flange (protection against pulling off). The control head can radially slide int

25InstallationCheck the secure fit of the sealing rings (in the upper and lower grooves). →Mount the control head on the hub flange (seamlessly 360° rot

26Opening and Closing the Housing8. OPENING AND CLOSING THE HOUSINGSafety instructions8.1. DANGER!Risk of injury from high pressure in the equipment!

27Opening and Closing the HousingClosing the Housing8.2.2. If necessary, clean the seal contour of the seal and of the hood, and lightly lubricate it

28Pneumatic Installation9. PNEUMATIC INSTALLATIONSafety instructions9.1. DANGER!Risk of injury from high pressure in the equipment!Before loosening p

29Pneumatic InstallationProcedure:If necessary, realign the control head (see chapter → 7.2.3. Realignment of the Control Head)A silencer has alread

3 Control Head Type 8681In h a l t1. OPERATING INSTRUCTIONS ...

30Pneumatic InstallationSettings of the Flow-Rate or the Control Speed with the Help of the Flow Restriction Screws:Open the housing observing the not

3124 V DC - Design10. 24 V DC - DESIGNElectrical connection options 10.1. The following connection concepts are available for the electrical connecti

3224 V DC - DesignSolenoid valves: Power input per solenoid valve: max. 0.8 W (0.9 W during activation) Power consumption per solenoid valv

3324 V DC - DesignDesign Aid10.3. Power consumption of the electronics:PEl= 0.7 W or IEl= 30 mA at 24 VPower consumption of a valve durin

3424 V DC - DesignSafety instructions10.4. DANGER!Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!Opening the hoo

3524 V DC - DesignNOTE! Use of the Control Head in Explosive AtmosphereOnly use cables and cable glands that are allowed for the respective applicatio

3624 V DC - DesignCircuit diagram 24 V DC: *) Order variant "Analog": output - analog signalCircuit diagram 24 V D

3724 V DC - DesignMulti-pole Connection10.5.2. Internal cabling work is not required for models with multi-pole connection, which makes installation a

38AS Interface - Design11. AS INTERFACE - DESIGNDefinition11.1. AS Interface ConnectionAS interface (Actuator Sensor Interface) is a field bus system w

39AS Interface - DesignElectrical Connection Options for AS Interface 11.2. The following connection concepts are available for the electrical connect

4 7. INSTALLATION ...

40AS Interface - DesignTable of calculated line length of the control head versions:When designing the system, consider the length of the round cable

41AS Interface - DesignConnections: Multi-pole connection version 1 x M16 x 1.5 cable gland / A/F19 with multi-pole connection (M12 plug a

42AS Interface - DesignNOTE! If all three solenoid valves are simultaneously controlled via the AS interface, the electronics will activate the valves

43AS Interface - DesignCalculation Examples:Example 1: 3 valves are activated simultaneously, one position is reported (state for 200 ms):PSlave

44AS Interface - Design11.7. Electrical installation AS InterfaceInternal cabling work is not required for any of the AS Interface designs with multi

45AS Interface - DesignThe cable with multi-pole connection version is especially suited for direct and flexible connection to the AS interface cable h

46AS Interface - Design11.8. Programming DataThe control heads have been configured as AS interface version with an extended address range (A/B slaves

47DeviceNet - Design12. DEVICENET - DESIGNDefinition12.1. The DeviceNet is a field bus system which is based on the CAN protocol (Controller Area Netwo

48DeviceNet - DesignInputs 3 discrete feedback signal of the position measuring system (positions S1 - S3) 1 discrete feedback signal of th

49DeviceNet - DesignElectrical Data12.4. Connections: "Multi-pole" 1 x M16 x 1.5 cable gland / SW22 with multi-pole connection

5 11.5. Design Aid ...

50DeviceNet - DesignDesign Aid12.6. Power consumption of the electronics:PEl= 1.44 W or IEl= 60 mA at 24 VPower consumption of a valve du

51DeviceNet - DesignSafety instructions12.7. DANGER!Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!Opening the h

52DeviceNet - DesignDeviceNet electronics module:Solenoid valve connection with status LED for Valve 1DIP switches for setting the address and baud r

53DeviceNet - DesignNetwork Topology of a DeviceNet System12.9. When installing a DeviceNet system, ensure that the terminating circuit of the data li

54DeviceNet - DesignSettings of the DeviceNet address12.10.1. MAC ID address = Medium Access Control Identifier AddressMAC ID address = [DIP 1 ⋅ 20

55DeviceNet - DesignSetting the baud rate12.10.2. Adjustment of the control head to the baud rate of the network.Baud rate DIP 7 DIP 8125 kbaud off of

56DeviceNet - DesignThe addresses listed in the table above ("Static input assemblies") can be used as a path data for the attribute Produce

57DeviceNet - DesignConfiguration example 12.12.2. The example describes the principle procedure when configuring the device using the software RSNetWor

58DeviceNet - DesignOnline Parameterization of the DeviceDevices can also be parameterized online. In doing so, you can also select whether only indiv

59DeviceNet - DesignState of bus status LED "Network"12.13.2. LED Device state Explanation TroubleshootingOff No voltage / not onlineDevice

6 13.3. Design Aid ...

60120 V AC - Design 13. 120 V AC - DESIGN Electrical connection options 13.1. Cable gland:Connection left: Voltage, signalsConnection right: ext

61120 V AC - Design Feedback signal output: S4 out is directly connected to S4 inInput / proximity switches (external initiator: S4 in):

62120 V AC - Design Design Aid13.3. Power consumption of the electronics:PEl= 1.2 VA or IEl= 10 mA at 120 VAPower consumption of a valve

63120 V AC - Design Safety instructions13.4. DANGER!Risk of injury due to electrical shock (110 ... 130 V AC)!Before reaching into the system (except

64120 V AC - Design DANGER!Risk of electric shock if the PE connection is not connected!the PE connection must be connected!•Clamp the protective con

65120 V AC - Design Designation Terminal stripConfigurationDesignation Terminal stripConfiguration for external initiatorPEProtection earth - protective

66Connection of an External InitiatorCONNECTION OF AN EXTERNAL INITIATOR14. DANGER!Danger of explosion in explosive atmosphere (only in the event of a

67Position Measuring System15. POSITION MEASURING SYSTEMThe switching positions of the process valve are reported to the higher-level control by feed

68Position Measuring SystemIf necessary, return control head and system to normal state (switching position, power supply). →Close the housing observi

69Position Measuring SystemAutotune functions15.2.2. Teach-In buttonMode Activa-tion durationopt. feed-backTeach-In buttonFunction Activation duratio

7 20. SPARE PARTS ...

70Position Measuring System - Then position S2 is taught. - After that, valve V1 is deactivated. It initiates closing of the process valve. - Onc

71Position Measuring SystemAutotune 4:Control Effect on the process valve internal program ErrorT2 + T3 Autotune mode startsT1 + T2Autotune 4 startsVa

72LED - Color Assignments16. LED - COLOR ASSIGNMENTSThe switching states of the feedback positions are signaled centrally to the outside by super-bri

73LED - Color AssignmentsSetting the Color Combinations16.1. Setting of the possible color combinations with the help of the DIP switches:S1 S2 S3 S4

74LED - Color AssignmentsBlinking patterns ON OFF Note 250 ms 250 msPermanent blinking in the fault color: - Teaching does not occur

75Service Mode / Manual Control 17. SERVICE MODE / MANUAL CONTROL By default, the control head provides the following (e.g. for service purposes):a m

76Service Mode / Manual Control Procedure for activating & deactivating the manual control for valve location 2/A1:Observe safety guidelines for t

77Maintenance, TroubleshootingMAINTENANCE, TROUBLESHOOTING18. Safety instructions18.1. DANGER!Risk of injury from high pressure in the equipment!Befor

78Maintenance, Troubleshooting18.2. Safety PositionsSafety positions after failure of the electrical or pneumatic auxiliary power:Operating mode Proc

79Maintenance, Troubleshooting18.3. MaintenanceWhen used properly, the Control Head Type 8681 operates maintenance and trouble-free.For service work,

8Operating InstructionsOPERATING INSTRUCTIONS1. The operating instructions describe the entire life cycle of the device. Keep these instructions in a

80Maintenance, TroubleshootingFault description Possible cause of the fault TroubleshootingFeedback signal is lost in system operationPosition in the

81Replacement of Components and ModulesREPLACEMENT OF COMPONENTS AND 19. MODULESIf components or modules need to be replaced for maintenance or servic

82Replacement of Components and Modules19.2. Changing the Electronics ModuleNOTE! Electrostatic sensitive components / modules!The device contains el

83Replacement of Components and ModulesInstallation procedure:Carefully insert the entire electronics module into the recess in the lower housing part

84Replacement of Components and ModulesLoosen the electrical connections. →Loosen the connecting screws (Torx T10) for the corresponding valve module.

85Replacement of Components and ModulesDANGER!Risk of injury from high pressure! Before loosening pneumatic lines and valves, turn off the pressure an

86Replacement of Components and ModulesLoosen the electronics module's fastening screw (Torx 10) (see chapter → 19.2. Changing the Electronics

87Spare Parts20. SPARE PARTSCAUTION!Risk of injury and/or damage by the use of incorrect parts!Incorrect accessories and unsuitable spare parts may c

88ShutdownSHUTDOWN21. Safety instructions21.1. DANGER!Risk of injury from high pressure! Before loosening pneumatic lines and valves, turn off the pre

89Packaging and TransportPACKAGING AND TRANSPORT22. NOTE! Transport damage!Inadequately protected equipment may be damaged during transport.During tra

9Authorized useAUTHORIZED USE2. Non-authorized use of the Control Head Type 8681 may be a hazard to people, nearby equipment and the environment. The

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