Burkert 8694 Operating instructions

Brand: Burkert

Model: 8694

Type: Operating instructions

Operating Instructions

Type 8694 REV.2

Positioner Top Control Basic

Electropneumatic position controller

We reserve the right to make technical changes without notice.

Technische Änderungen vorbehalten.

Sous réserve de modifications techniques.

Operating Instructions 2102/03_EN-EN_00815304 / Original DE

Table of ConTenTs

1 ABOUT THESE INSTRUCTIONS ............................................................................................................ 7

1.1 Symbols ........................................................................................................................................7

1.2 Denitionofterms ........................................................................................................................8

1.3 Firmwarechanges ........................................................................................................................8

2 INTENDED USE ......................................................................................................................................9

3 BASIC SAFETY INSTRUCTIONS .........................................................................................................10

4 GENERAL INFORMATION .................................................................................................................... 11

4.1 Contactaddress .........................................................................................................................11

4.2 Warranty .....................................................................................................................................11

4.3 Trademarks .................................................................................................................................11

4.4 Informationontheinternet ........................................................................................................11

5 SYSTEM DESCRIPTION ....................................................................................................................... 12

5.1 Intendedapplicationarea .......................................................................................................... 12

5.2 Functionofthepositionerandcombinationwithvalvetypes .................................................12

5.3 Featuresofthevalvetypes ........................................................................................................13

5.4 Structureofthepositioner .........................................................................................................14

5.4.1 Representation ...........................................................................................................14

5.4.2 Features ......................................................................................................................15

5.4.3 Function diagram of the positioner with single-acting actuator .................................16

5.5 Type8694positioner(positioncontroller) .................................................................................17

5.5.1 Schematic representation of the position control Type 8694 .....................................17

5.5.2 Functions of the position controller software .............................................................18

5.6 Interfacesofthepositioner ......................................................................................................20

6 TECHNICAL DATA ................................................................................................................................21

6.1 Conformity ..................................................................................................................................21

6.2 Standards ...................................................................................................................................21

6.3 Licenses .....................................................................................................................................21

6.4 Operatingconditions .................................................................................................................21

PositionerType8694REV.2

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Type 8694 REV.2

6.5 Mechanicaldata .........................................................................................................................21

6.6 Pneumaticdata ..........................................................................................................................22

6.7 Typelabels .................................................................................................................................22

6.7.1 Type label ....................................................................................................................22

6.7.2 UL additional label ...................................................................................................... 22

6.8 Electricaldata ............................................................................................................................23

6.8.1 Electricaldata,withouteldbuscommunication ........................................................23

6.8.2 Electrical data, IO-Link ...............................................................................................24

6.8.3 Electrical data, büS .....................................................................................................24

6.9 Factorysettingsofthepositioner .............................................................................................25

7 CONTROL AND DISPLAY ELEMENTS ................................................................................................26

7.1 Operatingstate ............................................................................................................................. 26

7.2 Controlanddisplayelementsofthepositioner ........................................................................26

7.3 Congurationofthebuttons ........................................................................................................ 28

7.4 FunctionoftheDIPswitches ....................................................................................................... 30

7.5 DisplayoftheLEDs ...................................................................................................................... 32

7.5.1 Device status display ..................................................................................................32

7.5.2 Status LED, green ....................................................................................................... 34

7.6 Errormessages............................................................................................................................. 35

7.6.1 Messagesfordevicestatus„Outofspecication“ ....................................................35

7.6.2 Messages: Actuator moves to safety position .............................................................35

8 INSTALLATION ......................................................................................................................................37

8.1 Safetyinstructions .....................................................................................................................37

8.2 InstallationofthepositionerType8694onprocessvalvesofseries2103,2300and2301 ...37

8.3 InstallingthepositionerType8694onprocessvalvesbelongingtoseries26xxand27xx ...... 40

8.4 Rotatingtheactuatormodule....................................................................................................44

8.5 Rotatingthepositionerforprocessvalvesbelongingtoseries26xxand27xx .....................46

9 PNEUMATIC INSTALLATION ................................................................................................................47

9.1 Safetyinstructions .....................................................................................................................47

9.2 Connectingthedevicepneumatically .......................................................................................47

9.3 Manualactuationoftheactuatorviapilotvalves .....................................................................48

9.3.1 Single-acting actuators (control function A and B) .....................................................48

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Type 8694 REV.2

10 ELECTRICALINSTALLATION24VDC ................................................................................................50

10.1 Safetyinstructions .....................................................................................................................50

10.2 Electricalinstallationwithcircularplug-inconnector ..............................................................50

10.2.1 Designation of the contacts Type 8694 ......................................................................50

10.2.2 Connection of the positioner Type 8694 .....................................................................51

10.3 Electricalinstallationwithcablegland ......................................................................................53

11 ELECTRICALINSTALLATION,IO-LINK ................................................................................................56

12 ELECTRICALINSTALLATION,BÜS .....................................................................................................57

13 START-UP .............................................................................................................................................58

13.1 Safetyinstructions .....................................................................................................................58

13.2 Specifyingthestandardsettings ..............................................................................................58

13.2.1 Running the automatic adjustment X.TUNE ..............................................................58

13.3 SettingwithBürkertCommunicator ..........................................................................................60

13.3.1 Connecting IO-Link device with Bürkert Communicator ............................................ 60

13.3.2 Connecting büS device with Bürkert Communicator .................................................61

14 IO-LINK .................................................................................................................................................62

14.1 Information,IO-Link ...................................................................................................................62

14.2 Technicalspecications,IO-Link ..............................................................................................62

14.2.1 Congurationoftheeldbus ......................................................................................62

15 BÜS ....................................................................................................................................................... 63

15.1 Information,büS .........................................................................................................................63

15.2 Congurationoftheeldbus .....................................................................................................63

16 OPERATION AND FUNCTION ..............................................................................................................64

16.1 Basicfunctions ............................................................................................................................. 64

16.1.1 DIR.CMD -

Reversaloftheeectivedirectionofthepositionerset-pointvalue ..........................65

16.1.2 CUTOFF -

Sealing function for the positioner ..............................................................................66

16.1.3 CHARACT -

Characteristic correction between input signal (position set-point value) and stroke 67

16.1.4 INPUT -

Enter the standard signal ............................................................................................69

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Type 8694 REV.2

16.1.5 RESET -

Reset to factory settings .............................................................................................70

16.1.6 X.TUNE -

Automatic calibration of the position controller .......................................................... 70

16.2 Auxiliaryfunctions ........................................................................................................................ 71

16.2.1 DIR.ACT -

Reversaloftheeectivedirectionoftheactuator ...................................................... 72

16.2.2 SPLTRNG -

Signal split range ........................................................................................................73

16.2.3 X.LIMIT -

Stroke limit ..................................................................................................................74

16.2.4 X.TIME -

Limit actuating time ....................................................................................................75

16.2.5 X.CONTROL -

Control parameters of the positioner .......................................................................... 76

16.2.6 SAFPOS -

Denitionofthesafeposition .....................................................................................76

16.2.7 SIG.ERROR -

Congurationofcablebreakdetection(onlyforvariantwithouteldbus

communication) ..........................................................................................................77

16.2.8 BINARY.IN (variant) -

Congurationofthedigitalinput(onlyforvariantwithouteldbuscommunication) .77

16.2.9 OUTPUT (variant) -

Congurationoftheanalogoutput(onlyforvariantwithouteldbus

communication) ..........................................................................................................78

16.2.10 Setting the LED mode, device status .........................................................................78

17 SAFETY END POSITIONS ....................................................................................................................79

17.1 Safetyendpositionsafterfailureoftheelectricalorpneumaticauxiliarypower ................... 79

18 MAINTENANCE ....................................................................................................................................80

18.1 Safetyinstructions .....................................................................................................................80

18.2 Serviceattheairintakelter ..................................................................................................... 81

19 ACCESSORIES .....................................................................................................................................82

19.1 Communicationssoftware .........................................................................................................82

20 DISASSEMBLY .....................................................................................................................................83

20.1 Safetyinstructions .....................................................................................................................83

20.2 Disassemblythepositioner .......................................................................................................83

21 TRANSPORTATION,STORAGE,DISPOSAL ........................................................................................85

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Type 8694 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.

ATTENTION

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.

▶Indicates an instruction for risk prevention.

→Indicates a procedure which you must carry out.

Indicates a result.

Menu Indicates a interface text.

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Type 8694 REV.2

About these instructions

1.2 Denition of terms

Intheseinstructionstheterm“device”denotesthefollowingdevicetypes:

Positioner Type 8694 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.

Intheseinstructions,theabbreviation“Ex”alwaysrefersto“potentiallyexplosiveatmosphere”.

1.3 Firmware changes

Asofrmware

version

Changes

A.1.6 Displayof“valvepositionhalf-way“changedfrom“LEDo“to“LEDislitwhite

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Type 8694 REV.2

Intended use

2 INTENDED USE

ThePositonerType8694REV.2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 peo-

ple, 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 explosive 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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Type 8694 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-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.

ATTENTION!

Electrostaticsensitivecomponentsormodules.

The device contains electronic components, which react sensitively to electrostatic discharge (ESD).

Contact with electrostatically charged persons or objects is hazardous to these components. In the worst

case scenario, they will be destroyed immediately or will fail after start-up.

▶Observe the requirements in accordance with EN 61340-5-1 and to minimize or avoid the possibility of

damage caused by sudden electrostatic discharge.

▶Also ensure that you do not touch electronic components when the power supply is on.

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Type 8694 REV.2

Basic safety instructions

4 GENERAL INFORMATION

4.1 Contact address

Germany

Bürkert Fluid Control System

Sales Center

Chr.-Bürkert-Str. 13-17

D-74653Ingelngen

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nalpagesoftheprintedoperatinginstructions.

And also on the Internet at:

www.burkert.com

4.2 Warranty

ThewarrantyisonlyvalidifthepositionerType8694isusedasintendedinaccordancewiththespecied

application conditions.

4.3 Trademarks

Brands and trademarks listed below are trademarks of the corresponding companies / associations /

organizations

Loctite Henkel Loctite Deutschland GmbH

4.4 Information on the internet

The operating instructions and data sheets for Type 8694 can be found on the Internet at:

www.burkert.com

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Type 8694 REV.2

System description

5 SYSTEM DESCRIPTION

5.1 Intended application area

The positioner Type 8694 is designed to be mounted on pneumatic actuators of process valves for the

control of media.

5.2 Function of the positioner and combination with valve

types

Positioner Type 8694 is an electropneumatic position controller for pneumatically actuated control valves with

single-acting actuators.

Together with the pneumatic actuator, the positioner forms a functional unit.

Thecontrolvalvesystemscanbeusedforawiderangeofcontroltasksinuidtechnologyand,dependingon

theapplicationconditions,dierentprocessvalvesbelongingtoseries2103,2300,2301,26xxor27xxfrom

the Bürkert range can be combined with the positioner. Angle-seat valves, diaphragm valves or ball valves

ttedwithacontrolconearesuitable.

“Figure1”showsanoverviewofthepossiblecombinationsofpositioneranddierentpneumaticallyactuated

valves.Dierentactuatorsizesandvalvenominalwidths,notillustratedhere,areavailableforeachtype.More

precisespecicationscanbefoundontherespectivedatasheets.Theproductrangeisbeingcontinuously

expanded.

Positioner Type 8694

with angle seat valve

Type 2702

with diaphragm

valve

Type 2730

with angle seat valve

Type 2300

with straight seat valve

Type 2301

Figure 1: Overview of possible combinations

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Type 8694 REV.2

System description

The position of the actuator is regulated according to the position set-point value. The position set-point value

isspeciedbyanexternalstandardsignal.

Pneumatically actuated piston actuators and rotary actuators can be used as an actuator. Single-acting

actuatorsareoeredincombinationwiththepositioner.

For single-acting actuators, only one chamber is aerated and deaerated in the actuator. The generated pressure

works against a spring. The piston moves until there is an equilibrium of forces between compressive force

and spring force.

5.3 Features of the valve types

Angleseatcontrol

valves/straightseat

controlvalves

Diaphragmvalves Ballvalves Flapvalves

Types •2300

•2301

•2702

•2712

•2103

•2730

•2731

•2652

•2655

•2658

•2672

•2675

Features •incomingowunder

seat

•no closing impact

•straightowpathof

the medium

•self-adjusting

stungboxforhigh

leak-tightness

•medium is hermeti-

cally separated from

the actuator and

environment

•cavity-free and self-

draining body design

•anyowdirection

with low-turbulence

ow

•steam-sterilizable

•CIP-compliant

•no closing impact

•actuator and dia-

phragm can be

removed when the

body is installed

•scrapable

•minimum dead

space

•unaectedby

contamination

•little pressure loss

compared to other

valve types

•seat and seal can

be exchanged in

the three-piece ball

valve when installed

Note

can be used as

process controller

only

•unaectedby

contamination

•little pressure

loss compared

to other valve

types

•inexpensive

•low construction

volume

Typical

media

•water, steam and

gases

•alcohols, oils, propel-

lants,hydraulicuids

•salt solutions, lyes

(organic)

•solvents

•neutral gases and

liquids

•contaminated,

abrasive and

aggressive media

•media of higher

viscosity

•neutral gases and

liquids

•clean water

•slightly aggressive

media

•neutral gases

and liquids

•slightly

aggressive

media

Table 1: Features of the valve types

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Type 8694 REV.2

System description

5.4 Structure of the positioner

The positioner Type 8694 consists of the micro-processor controlled electronics, the position sensor and the

pilot valve system. The positioner is operated via 2 buttons and a 4-pole DIP switch. The pilot valve system

for single-acting actuators consists of 2 solenoid valves.

5.4.1 Representation

LED

Electrical connection

(cable gland M16 x 1.5

or circular plug-in connector M12 x 1)

Buttons

DIP Switches

Transparent cap

Pressure limiting valve

(for protection against

too high internal

pressure in case of error)

Body casing

Pressure supply

connection (label: 1)

Exhaust air con-

nection (label: 3)

Communications

interface

Air intake

lter

(exchangeable)

Additional exhaust air port (label: 3.1)

only for Type 23xx and 2103

withpilotvalvesystemforhighairowrate

(actuator size ø 130)

Basic housing

Figure 2: Structure

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Type 8694 REV.2

System description

5.4.2 Features

•Models

for single-acting valve actuators.

•Position sensor

Contactless and therefore wear-free position sensor.

•Microprocessor-controlled electronics

for signal processing, control and valve control.

•Control module

The device is controlled via 2 buttons and a 4-pole DIP switch.

2 LEDs (1 RGB LED for device status and 1 green LED for communication interface status) indicate dif-

ferent statuses of the device

•Pilot valve system

The control system consists of 2 solenoid valves. One valve is used to aerate and another to deaerate the

pneumatic actuator. The solenoid valves operate according to the rocker principle and are controlled with

aPWMvoltageviathecontroller.Doingsoachievesahigherexibilitywithregardtoactuatorvolumeand

nalcontrolspeed.ThelowairowratemodelhasanoriceofDN0.6.Inlargerpneumaticactuatorsthe

solenoidvalvesfeaturediaphragmamplierstoincreasethemaximumowandthereforetoimprovethe

dynamics (DN 2.5).

•Position feedback

The position of the valve can be transmitted to the PLC via an analog 0/4-20 mA output (variant, without

eldbuscommunication)ordigitallyviaaeldbuscommunication(e.g.büS,IO-Link).

•Digital input (for variant without eldbus communication)

If a voltage > 10 V is applied, safety position (SAFEPOS) is activated*, i.e. the valve is moved to the safety

position (factory setting, can be changed with communications software).

Pneumatic interface

Electrical interface

•Pneumatic interfaces

G1/8“connections

hose plug-in connection Ø6 mm

•Electrical interfaces

Circular plug-in connector or cable

gland

•Housing

The housing of the positioner is protected from excessively high internal pressure, e.g. due to leaks, by a

pressure limiting valve.

•Communications interface

Forexchangingprocessdataandforcongurationandparameterization.

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Type 8694 REV.2

System description

5.4.3 Function diagram of the positioner with single-acting actuator

The illustrated function diagram describes the function of the positioner (Type 8694).

Pilot valve

system

Position

controller

Pilot valve system

1: Aeration valve

2: Bleed valve

Pressure

supply

Exhaust air

Position

sensor

Actual

position

external

position

set-point value

Positioner

Pneumatic

actuator

(single-acting)

Valve

(actuator)

Figure 3: Function diagram

english

Type 8694 REV.2

System description

5.5 Type 8694 positioner (position controller)

The position sensor records the current position (POS) of the pneumatic actuator. The position controller com-

paresthisactualpositionvaluewiththeset-pointvalue(CMD)whichisdenableasstandardsignal.Incaseofa

control deviation (Xd1), a pulse-width modulated voltage signal is sent to the pilot valve system as a manipulated

variable.Ifthereisapositivecontroldierenceinsingle-actingactuators,theairinletvalveiscontrolledvia

outputB1.Ifthecontroldierenceisnegative,thebleedvalveiscontrolledviaoutputE1.Inthiswaythe

positionoftheactuatorischangeduntilcontroldierenceis0.Z1representsadisturbancevariable.

Valve opening

Valve

Pilot valve

system

Position sensor

Position

controller

Position

set-point

value

CMD Xd1 B1

POS

Position control

circuit

Figure 4: Signal ow plan of position controller

5.5.1 Schematic representation of the position control Type 8694

büS, IO-Link

4 – 20 mA1)

0 – 20 mA

CHARACT

SPLTRNG2) DIR.CMD CUTOFF X.TIME2)

X.CONTROL

DBND

POS

CMD*

CMD

DIR.ACT2) X.LIMIT2)

1) Factory setting

2) Can only be activated with communications software

Figure 5: Schematic representation of position control

english

Type 8694 REV.2

System description

5.5.2 Functions of the position controller software

Basicfunctions

•Activation via DIP switches

•Parameter setting via communications software

Function Eect

Sealing function

CUTOFF

Valveclosestightoutsidethecontrolrange.Speci-

cation of the value (as %), from which the actuator is

completely deaerated (when 0 %) or aerated (when

100 %)

(see chapter “7.4FunctionoftheDIPswitches”).

Characteristic correction

CHARACT

Linearization of the operating characteristic can be

implemented (see chapter “7.4FunctionoftheDIP

switches”).

Reversaloftheeectivedirectionset-pointvalue

DIR.CMD

Reversaloftheeectivedirectionoftheset-point

value

(see chapter “7.4FunctionoftheDIPswitches”).

Table 2: Basic functions

Basicfunctions

•Activation with buttons or communications software

Function Eect

Standard signal3)

INPUT Select set-point value standard signal

Automatic calibration of the position controller

X.TUNE

Reset to factory settings

RESET Reset to factory settings

Table 3: Basic functions

3) Only adjustable with communications software

Only for variant without eldbus communication.

english

Type 8694 REV.2

System description

Auxiliaryfunctions

•Activation and parameter setting with communications software

Function Eect

Reversaloftheeectivedirectionoftheactuator

DIR.ACT

Assignment of the aeration status of the actuator

chamber to the actual position.

Signal split range

SPLTRNG

Standard signal as % for which the valve runs through

the entire mechanical stroke range.

Stroke limit

X.LIMIT Limit the mechanical stroke range

Limit actuating time

X.TIME Limit the control speed

Control parameters

X.CONTROL Parameterize the position controller

Safety position

SAFEPOS Definition of the safety position

Cable break detection4)

SIG.ERROR Congurationofsignallevelfaultdetection

Digital input4)

BINARY.IN Congurationofthedigitalinput

Analog output4)

OUTPUT Congurationoftheanalogoutput(variant)

Table 4: Auxiliary functions

4) Only for variant without eldbus communication.

english

Type 8694 REV.2

System description

5.6 Interfaces of the positioner

Input for position

set-point value5)

4 – 20 mA

0 – 20 mA

3- or 4-wire6)

Digital input

24 V DC

Communications

interface

Positioner

Analog

position feedback

(variant)

Inputs

Outputs

Power

Operation

5) Or via eldbus communication (büS/CANopen or IO-Link)

6) Factory setting is 4 – 20 mA, 4-wire

Figure 6: Interfaces

ThepositionerType8694mustbeoperatedin3-wireor4-wireconnection,i.e.thepower(24VDC)

issuppliedseparatelyfromtheset-pointvaluesignal.

•Input for position set-point value7) (4 – 20 mA corresponds to 0 – 100 %

(depending on position of DIP switch 1)).

•Digital input7)

If a voltage > 10 V is applied, safety position (SAFEPOS) is activated, i.e. the valve is moved to the safety

position (factory setting, can be changed with communications software).

•Analog position feedback (variant)7)

The position of the valve can be transmitted via an analog 4 – 20 mA output to the PLC

(4 – 20 mA corresponds to 0 – 100 %).

7) Only for variant without eldbus communication.

english

Type 8694 REV.2

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Burkert 8694 Operating instructions

Burkert 8694 Operating instructions

Burkert 8694 Operating instructions

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