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156

Maintenance, troubleshooting

Fault description

Possible cause of the fault

Troubleshooting

Feedback signal is "lost" in 

system operation

Position in the limit range of the 

feedback field
“6.8.1 Feedback fields (position 

measuring system)” on page 

28

Repeat the Teach procedure  

(see chapter 

“20.1 Setting the position 

measuring system (Teach procedure)”)

Check the process valve end positions 

during operation against the end posi-

tions in non-operative status of the 

system.
Check the pressure supply.

Valve output 2/A1 cannot be 

switched off with the control

Magnetic manual override is still 

activated

Deactivate the manual override -  

compare chapter “22.1 Magnetic 

manual override”

Valve outputs cannot be 

switched off by the control

Mechanical manual override at 

the solenoid valve is still activated

Deactivate the mechanical manual 

overrides on the solenoid valves - 

compare chapter “22.2 Mechanical 

manual override”

Faults are signaled by 

means of device status LED 

/ Top LED

Possible causes may vary 

depending on the version 

Please read the corresponding descrip-

tions of the respective communication 

variant in these operating instructions 

(see chapter 

“21.2 Flashing pattern & 

fault signalling”) 

No or faulty function of the 

process valves

No electrical power supply or 

communication for the control 

head

Check the power supply and the 

communication settings (also refer to 

detailed descriptions of the respective 

versions in these operating instructions)

No or insufficient pneumatic 

supply of the control head

Check the pressure supply and ensure 

that supply is sufficient

Incorrect function of the 

process valves

Confused pneumatic connection 

lines

Check the correct pneumatic con-

nection of the control head to the 

process valve 

(for fluid diagrams see chapter 

“5.3.2 

Fluid diagrams Type 8681 – examples”

 

and the operating instructions of the 

corresponding process valves)

Valves not correctly connected on 

electronic module

Check the correct electrical connection 

of the solenoid valves - compare e.g. 

“Fig. 15: 24 V DC electronic module”

 

In the event of any undefined faults, be sure to contact the service department of Bürkert.

 

(see chapter “4.1 Contact address”) 

english

Control Head Type 8681

Summary of Contents for 8681

Page 1: ...Operating Instructions Type 8681 Control Head Designs 24 V DC 120 V AC AS i DeviceNet IO Link büS CANopen ...

Page 2: ...e the right to make technical changes without notice Technische Änderungen vorbehalten Sous resérve de modification techniques Bürkert Werke GmbH 2010 2020 Operating Instructions 2004 07_EN_00806150 Original DE ...

Page 3: ...eneral 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 labe...

Page 4: ...neumatic 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 ...

Page 5: ...nstallation of the AS interface 59 12 9 Programming data 61 13 DEVICENET DESIGN 62 13 1 Definition 62 13 2 Electrical connection option 62 13 3 DeviceNet specification 62 13 3 1 Total line length and maximum line length according to DeviceNet specification 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 1...

Page 6: ...ter communication configuration 77 14 5 Electrical data form the control head IO Link 77 14 5 1 Electrical connection options interface 77 14 5 2 Electrical data of the control head 78 14 5 3 Design aid 80 14 5 4 Electrical installation IO Link 82 14 5 5 Pin assignment port class A or B 83 14 6 Software firmware updates 84 14 6 1 Software 84 14 6 2 Firmware updates 84 14 7 Safety position if the b...

Page 7: ... the gateway IP address using web server 100 15 15 2Changing the gateway IP address using Bürkert Communicator 102 15 15 3Changing the gateway IP address via Logix Designer 103 15 15 4Changing the gateway IP address using RS Linx 106 15 16 Registration of a gateway via Logix Designer 107 15 17 Installation of a gateway via Logix Designer 108 15 18 Configuration of the control head network 110 15 1...

Page 8: ...s 131 20 2 1 Teach functions and Teach reset 131 20 2 2 Automatic Teach functions Autotune 132 20 2 3 Sequence of the automtic Teach functions Autotune 133 21 LED COLOUR ASSIGNMENTS 136 21 1 Display modi overview 136 21 1 1 Device specific LED mode 8681 Classic Mode 138 21 1 2 NAMUR mode 139 21 1 3 Valve mode 140 21 1 4 Valve mode Errors 141 21 1 5 Valve mode Errors Warnings 142 21 1 6 Display mod...

Page 9: ...e 155 23 4 Cleaning 155 23 5 Malfunctions 155 24 REPLACEMENT OF COMPONENTS AND MODULES 157 24 1 Safety instructions 157 24 2 Changing the electronic module 158 24 3 Changing the valves 159 24 4 Changing the position measuring system 160 25 SHUTDOWN 163 25 1 Safety instructions 163 25 2 Dismantling the control head Type 8681 163 26 PACKAGING AND TRANSPORT 164 27 STORAGE 164 28 DISPOSAL 164 english ...

Page 10: ...serious injury WARNING Warns of a potentially dangerous situation Failure to observe the warning may result in serious injuries or death CAUTION Warns of a possible danger Failure to observe this warning may result in a moderate or minor injury NOTE Warns of damage to property Failure to observe the warning may result in damage to the device or the equipment Indicates important additional informat...

Page 11: ...rvice Center Do not use pulsating DC voltage rectified AC voltage without smoothing as the operating voltage Use the device only in conjunction with third party devices and components recommended and autho rised by Bürkert Any unauthorised reconstructions and changes to the control head are prohibited for safety reasons Correct transportation correct storage and installation as well as careful ope...

Page 12: ...ication area and which have been screwed into place according to the respective installation instructions Close all unnecessary openings with locking screws sealing plugs approved for explosions area WARNING Danger high pressure in the plant at the device Before loosening lines and valves turn off the pressure and vent the lines Risk of electric shock Before reaching into the system except for the...

Page 13: ...u do not touch electronic components when the operating voltage is on NOTE Risk of damage to property Do not connect any mechanically rigid connection parts in particular those with long lever arms as such connections could generate torques that might damage the control head Do not supply the medium connections of the system with liquids or aggressive or flammable media Do not subject the housing ...

Page 14: ...can also be downloaded for the respective variants To do so enter the type number or the identification article number of the respective device in the search field and download the required files under Downloads or Downloads Software The EDS files for DeviceNet and büS CANopen as well as the IODD file for IO Link are saved in the ZIP container Initiation Files Customer specific software is only ac...

Page 15: ... free position measuring system which operates with 3 discrete adjustable feedback signals Teach functions The control head and the process valve are interconnected by an adapter This produces an integrated compact and decentralised system of feedback actuation and valve function The following advantages over centralised solutions working with valve clusters are achieved low installation expenditu...

Page 16: ...2 A1 Position measuring system with LED device status LED Top LED Silencer in the exhaust air connection 3 R not shown Sealing lug on lower housing part 2 locking screws shoulder screws M5 No sealing function merely as protection against pulling off from the hub flange Locking groove 3x Fig 1 Structure of control head Type 8681 with 3 solenoid valves ____________________________________________ If...

Page 17: ...id valves of the control head to the process valve being controlled Variant with 3 solenoid valves e g for double seated process valves with restriction capability for each solenoid valve Type 6524 see Fig 6 on page 26 Process valve Solenoid valves Type 6524 Fig 2 Fluid diagram model 3 solenoid valves Type 6524 english Control Head Type 8681 ...

Page 18: ...various process valves single acting and double acting actuators as well as double seated and multi position valves or act as a mere feedback top without solenoid valves Type of use Number of solenoid valves Feedback top 0 Control head for single acting actuators 1 NC Control head for double acting actuators both drive chambers not energised and deaerated 2 2 x NC Control head for double seated va...

Page 19: ...equipped solenoid valve accessible when the hood is open see Fig 6 on page 26 The magnetic manual override for 2 A1 or V1 has the following advantages the control head does not need to be opened simple actuation tool for opening closing solenoid valve V1 main stroke helpful for service maintenance work on the process valve V2 and V3 are switched off at the same time both solenoid valves are actuat...

Page 20: ...m to the process valve piston rod valve spindle Simple adjustment of the position measuring system by means of 3 Teach buttons on the electronic module either manual or automatic adjustment manual Teach function or automatic Teach function Autotune see chapter 20 2 on page 131 The capability of restricting the pilot valves solenoid valves for the individual setting of the expansion and retraction ...

Page 21: ... C in a potentially explosive atmosphere zone 2 5 55 C Degree of protection Standard version IP65 IP67 according to EN 60529 only if cables plugs and sockets have been connected correctly the hood has been sealed correctly and the adaptation to the process valve was done correctly IP69K according to IEC 40050 9 Housing seal with connected exhaust air line instead of silencer and ideally closed cab...

Page 22: ... MV3 3 solenoid valves MVD 2 solenoid valves double acting Line 3 Permitted pressure range Line 4 Permitted ambient temperature range Tamb further device specific information possible Line 5 Serial number S N Line 6 ID number date of manufacture coded Line 7 Bar code with ID and serial number Further symbols and information on the type label indicate special approvals or relevant approval informat...

Page 23: ...r supply with class 2 power supply unit 6 4 Additional warning signs Additional signs indicate additional approvals and special operating conditions Warning sign for use of the device in potentially explosive atmosphere Line 1 Line 2 Line 3 Line 4 Line 1 Specifications according to ATEX directive gas ambient temperature Line 2 Specifications according to ATEX directive dust degree of protection sp...

Page 24: ...24 Technical Data 6 5 Mechanical data Securing the hood with lead seal max Ø2 M16x1 5 2x G1 4 2x G1 8 3x Fig 4 Dimensional drawing for models with 1 to 3 solenoid valves english Control Head Type 8681 ...

Page 25: ...2 Sealed M16x1 5 2x Fig 5 Dimensional drawing for models without solenoid valves feedback top Weight Approx 0 8 kg Housing material exterior PA PC PPO VA inside ABS PA PMMA Sealing material exterior CR EPDM inside EPDM FKM NBR english Control Head Type 8681 ...

Page 26: ...g to definition when pressure drops from 7 to 6 bar absolute at 20 C Connections Intake and exhaust air connection 1 P 3 R G1 4 Working connections 2 A1 3 G1 8 Setting the intake and exhaust air at the solenoid valve using flow restriction screws The intake and exhaust air can be set separately for each solenoid valve using flow restriction screws in order to be able to affect the expansion and re...

Page 27: ...pper end position Note upper end position of the target H 156 5 mm to prevent putting control head at risk Target 1 4021 in the lower end position Piston rod in the lower end position maximum stroke 80 mm Fig 7 Sectional view of control head and piston with target in upper and lower end position The fastening materials for target and piston rod as well as the piston rod itself may not be made of m...

Page 28: ...Link are usually pos sible via the bus specific communication interface With büS CANopen and IO Link changes can also be carried out via the Bürkert Communicator Type 8920 6 8 1 Feedback fields position measuring system A feedback field is the area within which a valve position e g S1 is reported back Signal of the valve position Feedback field at top positive Feedback field at bottom negative Fac...

Page 29: ... is required Service maintenance notification occurs when a Service maintenance notification is activated after the following counter readings Counter readings service interval Factory setting Adjustment range Adjustment range IO Link design only Switching cycle counter V1 10 000 1 255 x 1000 1 4294967295 Switching cycle counter V2 50 000 1 255 x 1000 1 4294967295 Switching cycle counter V3 50 000...

Page 30: ...S3 all positions not taught Feedback fields from S1 S3 see chapter 6 8 1 on page 28 Resettable switching cycle counters V1 V3 see chapter 6 8 2 on page 29 Resettable operating duration see chapter 6 8 2 on page 29 Service intervals switching cycles V1 V3 see chapter 6 8 2 on page 29 Service interval operating duration see chapter 6 8 2 on page 29 Service maintenance notification signaling of elaps...

Page 31: ...ry from improper assembly Assembly may only be carried out by trained technicians and with the appropriate tools Risk of injury from unintentional activation of the system and uncontrolled restart Secure system against unintentional activation following assembly ensure a controlled restart NOTE Risk of damage to property in case of improper installation Non observance can damage the device or the ...

Page 32: ...em data Control head Process valve Target made of 1 4021 O rings Hub flange Locking screws 2 x M5 Piston rod max Ø 30 Fig 10 Schematic diagram of the control head process valve adaptation The fastening materials for target and piston rod as well as the piston rod itself shall not be made of material with very good electrical conductivity e g copper aluminum or of ferromagnetic material Stainless s...

Page 33: ...quired for opera tional aspects accessibility of the manual override and because of electrical connection possibilities Procedure Loosen the locking screws shoulder screws M5 see Fig 10 slightly until the underside of the screw head is flush with the auxiliary surface of the housing The locking screw has been loosened suffi ciently when the lower side of the screw head is flush with the auxiliary ...

Page 34: ...24 V DC Design 120 V AC see chapter 11 120 V AC Design AS interface see chapter 12 AS Interface Design DeviceNet see chapter 13 DeviceNet Design IO Link see chapter 14 IO Link Design büS CANopen see chapter 15 büS CAN open Design 7 2 5 Recommended auxiliary materials Silicone grease for easy lubrication of the EPDM seals english Control Head Type 8681 ...

Page 35: ... and vent the lines Risk of injury from improper installation Installation may be carried out by trained technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and uncontrolled restart Secure system against unintentional activation Following installation ensure a controlled restart 8 2 Opening and closing the housing 8 2 1 Opening the housing NOT...

Page 36: ... external sealing lugs are positioned almost over each other Press the hood completely over the seal O ring of the lower part see also Fig 11 Turn the hood by approx 1 5 cm clockwise meaning until the sealing lugs are positioned over each other If necessary apply a lead seal to prevent opening without a tool The hood must be lead sealed in the potentially explosive atmosphere to prevent the housin...

Page 37: ...ional activation Following installation ensure a controlled restart 9 2 Pneumatic connection of the control head Exhaust air con nection 3 R Silencer not shown Supply pressure connection 1 P Working connections 2 A1 3 Solenoid valve 3 2 A3 Solenoid valve 2 2 A2 Solenoid valve 1 2 A1 Fig 12 Pneumatic connection Procedure If required realign the control head see chapter 7 2 3 Realignment of the cont...

Page 38: ...n its length to ensure that a QNn value 620 l min is reached Note Dimension the hose lengths so that the control head can be removed from the process valve if required without any additional disassembly work 9 3 Flow restriction function of the solenoid valves Set the flow restriction screws of the solenoid valves only when needed and after completion of all necessary installations The flow restri...

Page 39: ...ning time for the process valve Tool flat blade screwdriver width 3 mm Subsequently deactivate the respective valve location V1 V2 or V3 Turn the flow restriction screw R counterclockwise to set the required flow rate and therefore the closing time for the process valve Flow restriction screw Exhaust air R Flow restriction screw Intake air P Red hand lever of the mechanical manual override Hand le...

Page 40: ...ant 1 x M16 x 1 5 cable gland size22 for power supply and signals only for transportation safety device sealed with dummy plugs remove these before use for cable diameter 5 10 mm for wire cross sections 0 14 1 5 mm2 1 x M16 x 1 5 cable gland size19 connection option for external initiator sealed with dummy plug remove these before use Multi pole connection variant 1 x M16 x 1 5 cable gland size22 ...

Page 41: ... circuit proof with self clocking short circuit protection Switchable output current max 100 mA per feedback signal Output voltage active operating voltage 2 V Output voltage inactive max 1 V in unloaded state Input proximity switches external initiator S4 in Power supply Voltage present at the control head 10 Current carrying capacity sensor supply max 90 mA Short circuit protection Design DC 2 a...

Page 42: ...to the valves Only one 0 9 W valve will ever be recorded Calculation examples Example 1 3 valves are activated simultaneously one position is reported status for 200 ms PTotal PEl 1 x PValve ON 2 x PValve 1 x PLED 3 8 W 0 7 W 1 x 0 9 W 2 x 0 6 W 1 x 1 0 W or ITotal IEl 1 x IValve ON 2 x IValve 1 x ILED 160 mA 30 mA 1 x 38 mA 2 x 25 mA 1 x 42 mA Example 2 3 valves have been activated simultaneously...

Page 43: ...nal activation Following installation ensure a controlled restart 10 5 Electrical installation start up 10 5 1 Cable gland with screw terminals Procedure Open the housing following the instructions in chapter 8 Opening and Closing the Housing Assemble connection cables for signals and power supply as well as for the external initiator where nec essary in observance of the rules of technology Inser...

Page 44: ...coding the device status LED Top LED Connection for the external initiator Feedback signals S1 S4 OUT Control solenoid valves Y1 3 Teach buttons T1 3 Solenoid valve connections with status LED for valves V2 V3 Terminal strip Fig 15 24 V DC electronic module Designation Terminal strip Configuration Designation Terminal strip Configuration 24 V Power supply 24 V 24 V Power supply 24 V for external i...

Page 45: ...g system with LEDs Power supply 24 V DC Ground Output position 1 0 24 V PNP Output position 2 0 24 V PNP Output position 3 0 24 V PNP Output ext initator 0 24 V PNP Input solenoid valve 1 0 24 V Input solenoid valve 2 0 24 V Input solenoid valve 3 0 24 V Electronics Valve 1 Valve 2 Valve 3 Fig 16 Circuit diagram 24 V DC english Control Head Type 8681 ...

Page 46: ...lar plug in connector M12 x 1 0 male acc to IEC 61076 2 101 10 Pin 9 Y3 Pin 8 Y2 12 Pin 6 S4 out Pin 7 Y1 Pin 1 24 V Pin 5 S3 out Pin 4 S2 out 11 Pin 3 S1 out Pin 2 GND The center pins 10 11 and 12 are not used Fig 17 12 pole multi pole connection view onto the plug pins Pin Designation Configuration 1 24 V Power supply 24 V 2 GND GND 3 S1 out Output position S1 4 S2 out Output position S2 5 S3 ou...

Page 47: ...ption for external initiator sealed with dummy plug remove these before use Power consumption standby current 10 mA at 120 V AC Solenoid valves Max switching capacity 1 7 VA per solenoid valve Typ continuous output 1 4 VA per solenoid valve Power consumption per solenoid valve 12 mA at 120 V AC Operating mode Long term operation 100 ED Central display of the switching statuses 13 mA with a power s...

Page 48: ...ctivation 200 ms PValve ON 1 7 VA or IValve ON 14 mA at 120 V AC Power consumption of a valve after reduction PValve 1 4 VA or IValve 12 mA at 120 V AC Power consumption of an optical position report PLED 1 6 VA or ILED 13 mA at 120 V AC Also if several control head valves were to be opened simultaneously the switch signal will be sent staggered to the valves Only one valve 1 7 VA will ever be rec...

Page 49: ...nd safety regulations for electrical equipment When setting the position measuring system Teach procedure do not contact any live components Risk of electric shock if the PE connection is not connected the PE connection must be connected Danger of explosion in a potentially explosive atmosphere only in the event of a fault as zone 2 Opening the hood or the housing in a potentially explosive atmosp...

Page 50: ...configuration described in Fig 19 120 V AC electronic module If required secure the cable with a cable clip DANGER Risk of electric shock if the PE connection is not connected the PE connection must be connected Clamp the protective conductor to the PE connection Check correct grounding Close the housing following the instructions in chapter 8 Opening and Closing the Housing NOTE Ensure IP protect...

Page 51: ...rotective conductor protective earth Power supply L N Fig 19 120 V AC electronic module Designation Terminal strip Configuration Designation Terminal strip Configuration for external initiator PE Protective conductor Protective Earth L Power supply conductor L Conductor Power S4 IN External initiator input N Neutral conductor supply 120 V AC N Power supply neutral conductor S1 OUT Output position ...

Page 52: ...Earthr Central power supply 120 V AC Output position 1 0 120 V AC L switching Output position 2 0 120 V AC L switching Output position 3 0 120 V AC L switching Output external initiator 0 120 V AC L switching Input solenoid valve 1 0 120 V AC Input solenoid valve 2 0 120 V AC Input solenoid valve 3 0 120 V AC Valve 1 Valve 2 Valve 3 Fig 20 Circuit diagram 120 V AC english Control Head Type 8681 ...

Page 53: ...ce cable harness along which both information data and energy power supply for the actuators and sensors are transmitted Network topology Freely selectable within wide limits i e star tree and line networks are possible Further details are described in the AS interface specification A B slave model complies with the version 3 0 specification Consider the maximum total length of the bus cable see c...

Page 54: ...at the common AS interface bus segment see chapter 12 6 Design aid Standard AS interface 62 slaves AS interface version with extended addressing range A B slave In AS interface versions with extended addressing range A B slave 1 master can communicate with 62 slaves Option AS interface 31 slaves AS interface version with 31 slave addressing range In this case a maximum of 31 control heads can be c...

Page 55: ...nterface with External Power Supply to reduce the load on the AS interface bus segment see chapters 12 5 and 12 8 Use cables according to the AS interface specification If other cables are used the maximum cable length will change 12 5 Electrical data Comments notes Outputs from master perspective 0 to 3 solenoid valves Inputs from master perspective 3 binary feedback signals and 1 external initia...

Page 56: ...ormat is described in chapter 20 on page 129 Outputs from master perspective solenoid valves Typ switching capacity 0 9 W per solenoid valve for 200 ms after switching on Typ continuous output 0 6 W per solenoid valve from 200 ms after switching on Watchdog function integrated Output reduction via AS interface electronics integrated Typ Pull in current per sol valve 30 mA or 0 9 W 200 ms at 30 5 V...

Page 57: ...ted short circuit protection Please consider the following information to power requirement and to the maximum expansion stage of the AS interface network in chapter 12 3 Number of connectable control heads and in the AS interface specifications where applicable 12 6 Design aid Design aid for supply of the valves via the AS i bus Power consumption of the electronics PEl 1 0 W or IEl 33 mA at 30 5 ...

Page 58: ...Danger of explosion in a potentially explosive atmosphere only in the event of a fault as zone 2 Opening the hood or the housing in a potentially explosive atmosphere is only allowed in a not ener gised state WARNING Risk of injury due to electric shock Before reaching into the system except for the Teach procedure in a non explosive atmosphere switch off the power supply and secure it to prevent ...

Page 59: ...ircular plug 4 pole male according to IEC 61076 2 101 view of the M12 plug from the front onto the pins Pin 2 NC Pin 3 ASI Pin 1 ASI Pin 4 NC Bus connection with power supply for solenoid valves via bus Pin 2 GND Pin 3 ASI Pin 1 ASI Pin 4 24 V Bus connection with external power supply via solenoid valves Fig 23 AS interface bus connection power supply for solenoid valves via bus or external power ...

Page 60: ...face cable harness AS interface electronic module LED status displays 4 DIP switches for colour coding of the device status LED Top LED LED status displays Power and Fault Fig 26 LED status displays on the AS i electronic module LED 1 Power green LED 2 Fault red signalised status off off Power OFF on off OK on on No data traffic expired Watchdog at slave address does not equal 0 flashing on Slave ...

Page 61: ...ed in the AS interface master Please read the operating instructions of the used AS interface master AS i address factory setting AS i address 0 Programming data table Programming data for 62 slaves AS interface Device for A B slave addressing default device Programming data for 31 slaves AS interface optional I O configuration 7 hex 4 inputs 4 outputs see below Bit configuration table 7 hex 4 inp...

Page 62: ...t Messages The protocol process conforms to the DeviceNet specification Release April 2010 13 2 Electrical connection option Cable gland with multi pole connection M12 plug according to IEC 61076 2 101 5 pole cable length approx 80 cm Connection left Voltage signals Connection right external initiator Fig 27 Connection concept DeviceNet 13 3 DeviceNet specification EDS file 8681 EDS Icons 8681 ICO...

Page 63: ...ergy power supply for low power actuators and sensors The maximum total line length sum of trunk lines and drop lines of a network depends on the baud rate When designing the system the calculated line length of the cable at the control head must be 1 m this takes into account the outer and inner cable lengths Baud rate Maximum total line length Thick Cable Mid Cable Thin Cable 125 kBit s 500 m 30...

Page 64: ...aster perspective binary or analog feedback signals The recovery of the 3 valve positions reported back in binary format or the analog position signal is described in chapter 20 Position Measuring System on page 129 Outputs from master perspective solenoid valves Typ switching capacity 0 9 W per solenoid valve for 200 ms after switching on Typ continuous output 0 6 W per solenoid valve from 200 ms...

Page 65: ...ation examples Example 1 3 valves are activated simultaneously one position is reported status for 200 ms PTotal PEl 3 x PValve ON 1 x PLED 5 14 W 1 44 W 3 x 0 9 W 1 x 1 0 W or ITotal IEl 3 x IValve ON 1 x ILED 216 mA 60 mA 3 x 38 mA 1 x 42 mA Example 2 3 valves have been activated simultaneously one position is reported persistent state PTotal PEl 3 x PValve 1 x PLED 4 24 W 1 44 W 3 x 0 6 W 1 x 1...

Page 66: ... and with the appropriate tools Risk of injury from unintentional activation of the system and uncontrolled restart Secure system against unintentional activation Following installation ensure a controlled restart 13 8 Electrical installation DeviceNet No internal cabling work is required for any of the DeviceNet designs cable with multi pole connection which makes installation and start up on sit...

Page 67: ...gnals Teach buttons T1 3 Solenoid valve connec tions with status LED for valves 2 3 Status LED for device Status LED for network Fig 29 DeviceNet electronic module Terminal strip configuration Designation Terminal strip Configuration Designation Terminal strip Configuration V Power supply DeviceNet V Power supply for external initiator V Power supply DeviceNet S4 IN External initiator input CAN_H ...

Page 68: ...ates a line with one trunk line and several drop lines Trunk lines and drop lines consist of identical material Trunk line DeviceNet cable Terminating resistor 120 Ω W Terminating resistor 120 Ω W Drop lines DeviceNet cable max 6 m long T01 Tn Subscriber 1 node 1 Subscriber n node n V V CAN_H CAN_L Fig 30 Network topology 13 10 Configuring the DeviceNet address baud rate 8 DIP switches are availab...

Page 69: ...n 11 on on off on off off 43 on on off on off on 12 off off on on off off 44 off off on on off on 13 on off on on off off 45 on off on on off on 14 off on on on off off 46 off on on on off on 15 on on on on off off 47 on on on on off on 16 off off off off on off 48 off off off off on on 17 on off off off on off 49 on off off off on on 18 off on off off on off 50 off on off off on on 19 on on off o...

Page 70: ...ies contain selected attributes combined into one object so that process data can be transmitted collectively via an I O connection The process data is selected by setting the device parameters Active Input Assembly and Active Output Assembly or if supported by the DeviceNet Master Scanner by setting Produced Connection Path and Consumed Connection Path when an I O connection is initialised accord...

Page 71: ...ation of the device 13 12 1 Configuration of the safety position of solenoid valves during a bus error The valve safety position and the safety mode attributes can be used to configure the solenoid valves in the event of a bus error The configuration data of the behaviour of solenoid valves in case of a bus error can be accessed acyclically via Explicit Messages The Get_Attribute_Single service st...

Page 72: ...the device When a device has been inserted into the DeviceNet configuration of RSNetWorx the device can be param eterised offline Fig 33 indicates how for example an input assembly which deviates from the factory setting input process data can be transferred via I O connection can be selected However ensure that the length of the process data during a subsequent configuration of the DeviceNet mast...

Page 73: ...e device status LED modules and the bus status LED network are located on the electronic module The errors displayed here on the elec tronic module are also signalled via the central multi colour status display device status LED Top LED Fig 33 Status LEDs Function tests for both status LEDs after power has been switched on connection of the network cable Status LED Colours of the LED Function test...

Page 74: ...master exists Normal operating status with established connection to the master Flashes green Online without connection to master Normal operating status without established connection to the master Flashes red Connection time out One or more I O connections are in Time Out state New connection establishment by master to ensure that the I O data is transmitted cyclically Red Critical fault Another...

Page 75: ...ly The devices conform to the specifications as described in greater detail in chapter 14 3 14 1 Network principle interfaces Fig 34 Network principle of IO Link IO Link control heads can also be connected individually with the Bürkert Communicator for configuration and firmware update via the büS stick to the Micro USB port on the electronic module see Fig 36 Since no voltage is transferred via t...

Page 76: ...n 14 4 Software download firmware updates Download the required software files IODD and the object description from www burkert com search term 8681 Downloads Software Initiation Files EDS IODD zip file See details in chapter 14 6 on page 84 14 3 Technical data specification IO Link specification Version 1 1 2 Port class A shared power supply Power 1 for supply of the system and actuators solenoid...

Page 77: ...y by the higher level controller PLC via the IO Link master and with the Bürkert Communicator via the service interface 14 5 Electrical data form the control head IO Link 14 5 1 Electrical connection options interface or with cable glands or with cable glands and multi pole connection M12 connection in accordance with IEC 61076 2 101 4 pole port class A or 5 pole port class B cable length approx 1...

Page 78: ...ge 80 Max current consumption i e 2 solenoid valves active 1 solenoid valves switches on for 200 ms 1 position feedback via LED display no external proximity switch port class A Power 1 151 mA at 24 V DC port class B Power 1 63 mA at 24 V DC port class B Power 2 97 mA at 24 V DC Current consumption in persistent state i e 3 solenoid valves active 1 position feedback via LED Display no external pro...

Page 79: ...e for 200 ms after the power has been switched on Typ continuous capacity 0 6 W per solenoid valve from 200 ms after the power has been switched on Reduction in output Integrated via the IO Link electronics Typ inrush current 38 mA or 0 9 W 200 ms per solenoid valve Typ hold current 25 mA or 0 6 W at 24 V DC per solenoid valve Operation mode Continuous operation 100 duty cycle Valve types 6524 Cen...

Page 80: ...4 V Calculation examples for port class A Example 1 3 valves are activated one position is reported status for 200 ms the control head switches automatically one valve after another to keep the current consumption low i e max current consumption ITotal l max current con sumption of 2 valves already activated 1 valve just switching PTotal Pel 2 x Pvalve 1 x Pvalve ON 1 x PLED 3 6 W 1 0 W 2 x 0 6 W ...

Page 81: ...ally switches one valve after another to keep current consumption low i e for Power 1 max current consumption IPower 1 current consumption of electronics 1 display LED Power 2 max current consumption IPower 2 current consumption of electronics 2 of 2 valves already turned on 1 valve currently switching PPower 1 Pel 1 1 x PLED PPower 2 Pel 2 2 x Pvalve 1 x Pvalve ON 1 5 W 1 0 W 1 x 0 5 W 2 3 W 0 22...

Page 82: ...ximity switch Micro USB port for service purposes büS Teach buttons T1 3 Solenoid valve connec tions with status LED for Valves V2 V3 Port for Power 1 Ports for C Q and Power 2 2L 2M for port class B Fig 36 Electronic module IO Link in the example port class B For the multi pole connection variants No internal cabling work is required for any of the IO Link versions with multi pole connection whic...

Page 83: ...2 connection 4 pole Pin Designation Assignment IO Link operation mode Wire colour 1 L 24 V DC Power 1 brown 2 DIO 2L 24 V DC Power 2 white 3 L 0 V GND Power 1 blue 4 C Q IO Link black 5 2M 0 V GND Power 2 grey or yellow green Table 5 Pin assignment for connecting port Class B M12 connection 5 pole The diagram below illustrates the difference between port class A and B Fig 37 Assignment principles ...

Page 84: ... do this The Bürkert Communicator Type 8920 can also be downloaded from the Bürkert website For details on connecting the control head with the Bürkert Communicator see chapter 14 1 Network prin ciple interfaces on page 75 14 7 Safety position if the bus fails A bus failure or bus error is indicated by the central multicolour device status display top LED Bus errors can occur for example due to co...

Page 85: ...ee chapter 15 4 15 2 Network principle Interfaces Fig 38 Network principle The PC with the Bürkert Communicator can be connected to each free connection in the büS network for example to one of the distributors The control head can also be connected to the Bürkert Communicator for individual configuration This can be done depending on the variant via the M12 plug or via the connection terminal ins...

Page 86: ...R IN connection In this case connect CAN ONLY to CAN IN using a CAN cable This cable which interconnects the CAN junction boxes at CAN ONLY and CAN IN cannot be used for T connectors to branch nodes because no power is supplied to this cable compare example 3 in chapter 17 Cabling examples büS CANopen on page 122 Unused or open connections must be closed with the appropriate protective caps Requir...

Page 87: ...ol head see also chapter 15 14 3 on page 99 Error free parameter access by the Logix Designer To ensure this the new addresses should be selected clearly arranged and in sequence starting with 1 and without gaps in the numerical series Any change of the device address requires a device restart 2 Setting the baud rate Set the baud rates according to chapter 15 14 1 Setting the baud rate The combina...

Page 88: ...esolution 1 mm feedback as cyclic position signal of the target 1 byte NAMUR status feedback 1 byte position feedback 3 discrete feedback signals from the position measuring system positions S1 to S3 1 discrete feedback signal from the external initiator S4 power supply via büS CANopen cable 11 25 V DC The acyclic analogue position signal of the target can be read out e g as parameter 8681_Current...

Page 89: ...nsportation safety device sealed with dummy plugs remove these before use for cable diameter 5 10 mm for wire cross sections 0 14 1 5 mm2 1 x M16 x 1 5 cable gland size19 connection option for external initiator sealed with dummy plug remove this before use Multi pole connection variant 1 x M16 x 1 5 cable gland size22 with M12 plug according to IEC 61076 2 101 5 pole for büS CANopen and power sup...

Page 90: ...aster perspective solenoid valves Typ switching capacity 0 9 W per solenoid valve for 200 ms after the power has been switched on typ continuous output 0 6 W per solenoid valve from 200 ms after the power has been switched on Output reduction via the büS CANopen interface electronics integrated Typ pull in current 38 mA or 0 9 W 200 ms per solenoid valve Typ holding current 25 mA or 0 6 W at 24 V ...

Page 91: ...s automatically one valve after another to keep the current consumption low i e max current consumption ITotal l max current con sumption of 2 valves already activated 1 valve just switching PTotal PEl 2 x PValve 1 x PValve ON 1 x PLED 4 1 W 1 3 W 2 x 0 6 W 1 x 0 9 W 1 x 0 7 W or ITotal 24 V IEl 2 x IValve 1 x IValve ON 1 x ILED 172 mA 54 mA 2 x 25 mA 1 x 38 mA 1 x 30 mA Example 2 3 valves have be...

Page 92: ... on page 31 and 9 Pneumatic Installation on page 37 15 10 Gateway Icon The gateway Type ME43 is used as the fieldbus interface between büS capable devices control heads Type 86xx or other Bürkert büS devices and the PLC e g EtherNet IP Profinet etc on request The number of devices with which the gateway can communicate depends on the inputs and outputs per büS device and the respective fieldbus pr...

Page 93: ...pin assignments described in the figure below Pin 4 CAN_H white Pin 5 CAN_L blue Pin 1 Drain shielding Pin 3 V black Pin 2 V red View of plug from the front onto the pins Fig 41 Bus connection büS CANopen with power supply For the versions with cable glands Open the housing compare chapter 8 Opening and Closing the Housing on page 35 so that this electronic module is visible as shown below Fig 42 ...

Page 94: ...büS CANopen S4 IN External initiator input CAN_H white Bus signal CAN high GND GND external initiator CAN_L blue Bus signal CAN low For connecting the external initiator compare chapter 18 Connection of an External Initiator on page 125 15 12 3 Details on the DIP switches for colour coding The classic colour combinations can be set via DIP 1 to 4 as described in chapter 21 1 1 Device specific LED ...

Page 95: ...address can be allocated to each control head via DIP switches see chapter 15 14 Configuring the Node ID baud rate Trunk line büS CANopen cable Terminating resistor 120 Ω W Terminating resistor 120 Ω W Drop lines büS CANopen cable max 6 m long Node 01 Node n Control head 1 node 1 Control head n node n V V CAN_H CAN_L Fig 43 Network topology büS CANopen 15 14 Configuring the Node ID baud rate DIP s...

Page 96: ... are changed by actuating the DIP switches these changes will not take effect until the device is restarted For a restart trigger a restart command via Bürkert Communicator or briefly disconnect the control head from the power supply and reconnect or switch the power supply off on or transmit an appropriate reset message Special characteristics for configuration of the software configurable baud r...

Page 97: ...15 on on on on off off 47 on on on on off on 16 off off off off on off 48 off off off off on on 17 on off off off on off 49 on off off off on on 18 off on off off on off 50 off on off off on on 19 on on off off on off 51 on on off off on on 20 off off on off on off 52 off off on off on on 21 on off on off on off 53 on off on off on on 22 off on on off on off 54 off on on off on on 23 on on on off ...

Page 98: ... the device is to receive a fixed device address the Fixed CANopen address Static Node ID must be set to the appropriate value using the Bürkert Communicator To accept this value the device must be restarted If the device does not receive the target device address set as parameter Fixed CANopen address the solenoid valves remain in the configured safety position and an error status is displayed If...

Page 99: ...NOTE box 3 and the DIP switch position was changed after the last device restart the control heads will be configured according to a presetting rule at the next device restart This automatically configures the setpoint producer for the control of the solenoid valves The factory default setting is defined Presetting Rule 1 for systems with a preconfigured gateway Gateway_8681 This results in an aut...

Page 100: ...erred automatically The new device must then be taught Details and operating conditions are described in the software manual Central configuration management of Bürkert devices see chapter 4 3 on page 14 For this configuration the Bürkert Communicator version 4 x or higher is required During a device reset factory reset of the configuration device control head as of firmware B 01 00 00 the configu...

Page 101: ...button Restart is clicked the new Static IP address is not saved only the device will be restarted Click the OK button to take over the new Static IP address by restarting the device if Cancel is selected the old Static IP address remains active and is only taken over at the next restart The following message appears To connect the gateway to its new IP address enter the new IP address shown in th...

Page 102: ...rkert Communicator Type 8920 Click on the icon to add a büS connection e g büS COM8 Open the desired gateway e g Gateway_8681 and select Industrial communication and then the Parameter tab then select Protocol settings The standard address Static IP address is displayed 192 168 1 100 Click the pencil to change the IP address Confirm the new Static IP address by clicking on the Apply button Restart...

Page 103: ...new window opens go to the Internet Protocol tab Mark Manually configure IP set tings in the area Internet Pro tocol Settings In the area IP Settings Con figuration overwrite the current Physical Module IP Address and if required also Subnet Mask and Gateway Address Click the Set button A warning then appears IP Address in physical module does not match address in general properties Click the OK b...

Page 104: ...Ethernet Address Private Network with the new address Click the OK button Select Go Online again A new window opens Go to the Options tab Click the Download button to load the offline changes of the project into the controller PLC continued on next page english Control Head Type 8681 ...

Page 105: ...105 büS CAN open Design A new window with several warnings opens Click the Download button to continue the download process english Control Head Type 8681 ...

Page 106: ... and select Module Configuration A new window opens go to the Port Configuration tab In the area Network Configuration Type mark the Static option Enter the new IP Address and if required also the Subnet Mask and Gateway Address Confirm the configuration with OK A warning window opens Click Ja Yes button to continue the changing process Inaccessible IP addresses are crossed out english Control Hea...

Page 107: ...pens as shown in the figure on the right Select Register an EDS file s option and click the Next button A new window opens as shown in the figure on the right Select Register a single file option Browse your computer for the appro priate EDS file Gateway_EIP_8681_vXX_ YYMMDD_63Dev eds Click the Next button twice A new window opens Change Graphic Image If you want to change the icon graphic click t...

Page 108: ...go Offline Search for I O Configuration and Ethernet Right click on Ethernet Select New Module In the new window Select Module Type select the appropriate device from the Catalogue use the filter function for a faster search vendor Buerkert Werke After selecting the Gateway 8681 bueS click on the Create button continued on next page english Control Head Type 8681 ...

Page 109: ...ivate Network number for the Ethernet Address Click on OK button Close the old window Select Module Type in the new window DOWNLOAD the corresponding files see chapter 15 10 Gateway on page 92 onto the PLC Then Go Online to connect the gateway and the master controller PLC EtherNet IP to each other english Control Head Type 8681 ...

Page 110: ...s to hide the inputs and outputs via software Logix Designer 15 18 1 or via the Bürkert Communicator Type 8920 15 18 2 15 18 1 Hide function via software Logix Designer Start the Logix Designer Open the project e g Logix Designer Gateway_Type8681 Open the desired gateway and select the Parameters tab Now select the line Hide Outputs 1 64 and hide each non existent control head by setting a 1 one i...

Page 111: ...8920 Click on the icon to add an interface e g büS COM8 Open the desired gateway e g Gateway_8681 and select Industrial communication and then the Parameter tab search for Hide process values then select Edit hide objects and start the step sequence with a click Page 1 Start the hiding function set the switch to ON in order to reset already hidden values or set the switch to OFF in order to NOT re...

Page 112: ... set the switch to OFF in order NOT to activate the hiding i e these inputs are NOT hidden Click on Next or cancel the hiding process via button Cancel Page 4 Finish the hiding function set the switch to ON newly hidden values will be confirmed and with Finish the device will be restarted immediately or set the switch to OFF newly hidden values will be confirmed but with Finish the device is NOT r...

Page 113: ... see also chapter 15 4 1 on page 88 The relevant process data are transfered via Logix Designer as Controller Tags the position feedback from S1 S4 bit coded see example 1 below and the current position feedback analog as well as the solenoid valve switching statuses V1 V3 bit coded see example 2 below Example 1 process data from control head to gateway PLC Position 1 and External Initiator are ac...

Page 114: ...c parameters further values and statuses for acyclic parameters of the büS devices connected to the gateway can be read out and partially written overwritten see 15 20 4 Access to further parameters cyclic and acyclic on page 117 15 20 1 Parameter reading via Logix Designer Open the project e g Logix Designer Gateway_Type8681 According to the path I O Configuration Ethernet Gateway open the desire...

Page 115: ...115 büS CAN open Design T h i s parameter is displayed for all devices english Control Head Type 8681 ...

Page 116: ...on OK or Enter to accept the value 15 20 3 Access to parameters via Bürkert Communicator The Bürkert Communicator Type 8920 makes it easy to read and change parameters For a detailed description of the Bürkert Communicator see the relevant manual see chapter 4 3 Information and instructions on the Internet on page 14 Connect the PC with Bürkert Communicator Type 8920 to the büS CANopen data line u...

Page 117: ...ix Designer The required fieldbus addresses as well as indices sub indices are shown in a Parameter list that cor responds to the respective gateway configuration This parameter list and other files can be found on the Bürkert website enter the respective ID number of the preconfigured gateway as search term and download the required files from the ZIP container under Downloads Software An Object ...

Page 118: ...tion test Flashing pattern Module red green 250 ms ON red 750 ms ON green Network green red 250 ms ON red 250 ms ON green 500 ms OFF If the function test has been completed successfully the status LEDs indicate the device status as described in the following tables Status of the device status LED Module LED Device status Explanation OFF No power supply Device is not powered Green Device is working...

Page 119: ...nce Check the status of the gateway connected to the system If required replace the device Display visualisation only from firmware version B 02 15 22 Firmware updates Firmware updates of the control heads gateways and possibly other devices can only be carried out using the Bürkert Communicator with the aid of a büS stick This requires the installer level The integration of the Bürkert Communicat...

Page 120: ...ads Type 8681 büS Other pre configurations e g in conjunction with Control Heads Type 8691 Positioners Type 8692 or Process Con trollers Type 8693 on request 316696 gateway 774087 SD card Cables and connections büS CANopen developed for application in environments with hygienic requirements degree of protection IP65 67 materials Metal parts stainless steel cable sheath PVC U 24 V DC I max 4 A requ...

Page 121: ...g from Rockwell Automation can also be used However they must comply with the necessary requirements when used in the Hygenic area because not all of these parts have the required quality such as stainless steel or PP or PPE or PVC Standard service equipment not suitable for hygienic requirements Order ID No Magnetic manual override see 22 1 for switching solenoid valve 1 2 A1 796131 USB büS inter...

Page 122: ...LING EXAMPLES BÜS CANOPEN Required tightening torque for all M12 connections cables T pieces to ensure the necessary tightness against moisture 0 6 Nm 0 1 Nm Close all open connections well with protective caps english Control Head Type 8681 ...

Page 123: ...S CANopen Required tightening torque for all M12 connections cables T pieces to ensure the necessary tightness against moisture 0 6 Nm 0 1 Nm Close all open connections well with protective caps english Control Head Type 8681 ...

Page 124: ...S CANopen Required tightening torque for all M12 connections cables T pieces to ensure the necessary tightness against moisture 0 6 Nm 0 1 Nm Close all open connections well with protective caps english Control Head Type 8681 ...

Page 125: ...or Designation of the screw terminals on the different electronic modules Designation according to design Configuration 24 V DC AS i DevNet IO Link büS CANopen 120 V AC 24 V V L Power supply according to design S4 IN S4 IN S4 IN External initiator input GND GND N GND external initiator 24 V DC AS i DevNet or power supply 120 V AC design Electrical requirements of the external initiator for differe...

Page 126: ...izes or dummy plugs used approx 1 5 Nm If no external initiator is used the right hand connection opening must be tightly sealed using a dummy plug or using a cable gland SW 19 Ø 3 6 mm dummy plug Ø 5 6 mm Use of the control head in a potentially explosive atmosphere Only use cables and cable glands which are approved for the respective application area and fit the cable glands according to the re...

Page 127: ... guaranteed only automatic Teach function Autotune 1 and 2 possible 19 1 2 Fluid diagram See Fig 3 Fluid diagram design for double acting actuators 2 solenoid valves NC NO on page 18 19 1 3 Activation of a double acting actuator To open or close the process valve both solenoid valves V1 and V2 must be activated simultaneously Process valve 24 V 120 V AS interface DeviceNet Solenoid valve V V1 V2 V...

Page 128: ...d programming data Compare also chapter 12 8 Electrical installation of the AS interface on page 59 for the standard designs View of the two M12 female connectors for the two external initiators Ext ini tiator 2 Ext ini tiator 1 Pin External initiator 2 Wire colour Pin External initiator 1 Wire colour 1 24 V brown 1 24 V brown 2 Not used 2 Not used 3 GND blue 3 GND blue 4 S5 IN white 4 S4 IN black...

Page 129: ...dback signal standard proximity switch external initiator can also be processed S4IN S4OUT The valve positions S1 to S3 are reported within a certain tolerance range this feedback range can be adapted see chapter 6 8 1 Feedback fields position measuring system on page 28 These Teach buttons or the PC service program for the 24 V DC 120 V AC AS i DeviceNet variants can be used to define the switch ...

Page 130: ...ox 1 5 seconds The LED colour corresponding to this position will flash quickly 3 times during the Teach procedure When this position has been saved the corresponding LED will remain continuously lit until the position of the target is changed The process valve can now be moved into a third defined position Depress the middle Teach button T3 for approx 1 5 seconds The LED colour corresponding to t...

Page 131: ...ly in the encoded colour for position S3 T1 T2 Teach reset of all valve positions S1 S2 and S3 2 5 s Flashes in the fault colour see chapter 21 2 Furthermore the Teach procedure can also be automated the automatic Teach functions Autotune func tions programmed for this purpose are described in detail in the following chapters The 5 different automatic Teach functions Autotune are pre programmed fo...

Page 132: ...ptical feedback classic designs Optical feedback IO Link büS CANopen T1 Autotune 1 each 0 5 s green yellow red running light i e alternating display red yellow green flashing in succession 200 ms per colour T2 Autotune 2 T3 Autotune 3 T1 T2 Autotune 4 T1 T3 Autotune 5 T2 T3 Autotune 6 The following applies to IO Link and büS CANopen devices This optical feedback for automatic Teach function Autotu...

Page 133: ...ocess valve must be at the beginning of the Autotune procedure here closed position Close it if necessary 2 Press the teach buttons T2 and T3 at the same time for 2 5 s to select the Autotune mode This mode will be indicated by continuous illumination of the Top LED central device status LED 3 Press teach button T1 for 0 5 s to start the Autotune 1 mode This will be indicated by illumination of th...

Page 134: ...utotune mode completed Automatic Teach function Autotune 3 Control Effect on the process valve Internal program Error T2 T3 Autotune mode started T3 Autotune 3 starts Closed position Teach T1 Open valve Activate V1 Wait period 10s Open position Teach T2 Valve closing Deactivate V1 Valve closes Wait on position S1 S1 Timeout 15 s Open clock valve plate Activate V2 Wait period 10s Clock valve plate ...

Page 135: ...tion Deactivate V2 Autotune mode completed Automatic Teach function Autotune 5 Control Effect on the process valve Internal program Error T2 T3 Autotune mode started T1 T3 Autotune 5 starts Closed position Teach T1 Open valve Activate V1 Wait period 10s Open position Teach T2 Valve closing Deactivate V1 Valve closes Wait on position S1 S1 Timeout 15 s Intermediate position opens Activate V2 Wait p...

Page 136: ... carried out via the actual bus specific communication interface in this case no settings on the electronic module are required and as such the cover can remain closed Factory setting DIP 1 4 0000 i e DIP1 to 4 in position 0 OFF relates to variants 24 V DC 120 V AC AS i DeviceNet Factory setting DIP 1 5 111110 i e DIP1 to 5 in position 1 ON DIP 6 Pos 0 OFF relates to variant büS CANopen see follow...

Page 137: ...see chapter 21 1 6 Top LED off there is no feedback via Top LED In the Bürkert Communicator the display modes can be found under General settings Parameters Status LED Mode PLEASE NOTE Hardware configured values that means set via DIP switches overwrite the software configured display mode 1 1 0 0 1 0 NAMUR mode The device status is displayed according to NAMUR NE 107 see chapter 21 1 2 1 0 1 1 1 ...

Page 138: ...1 8681 Classic 9 green red green green yellow 0 1 0 1 8681 Classic 10 red green red red yellow 1 1 0 1 8681 Classic 11 green yellow yellow yellow red 0 0 1 1 8681 Classic 12 yellow green green green red 1 0 1 1 8681 Classic 13 green red red red yellow 0 1 1 1 8681 Classic 14 red green green green yellow 1 1 1 1 8681 Classic 15 Table 7 Colour combinations Colour coding of the classic variants and d...

Page 139: ...1110 compare Table 6 on page 137 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 normal operation red LED failure highest priority see following Table 9 Colour Prio rity Description Meaning red 1 Failure error malfunction Controlled operation is not possible due to a malfunctio...

Page 140: ...alve is in intermediate positions of the defined teach points the Top LED is off Table 10 Description of the colours and flashing patterns in valve mode display mode Factory settings other selectable colours for S1 to S4IN and also for the intermediate positions white green blue yellow orange red Top LED off Factory settings other selectable flashing patterns continuously lit 125 ms ON 125 ms OFF ...

Page 141: ...iator active green continuously flashing quickly 125 ms ON 125 ms OFF is lit red alternating with colour from S4IN If there is no position feedback S1 to S4IN i e the process valve is in intermediate positions of the defined teach points the Top LED is off Table 11 Description of the colours and flashing patterns in valve mode errors display mode Factory settings other selectable colours for S1 to...

Page 142: ...D is off Flashing pattern for the intermediate positions with selected colour different from the factory setting Top LED off continuously lit alternating with possible warning or error messages Table 12 Description of the colours and flashing patterns in valve mode errors warnings display mode Factory settings other selectable colours for S1 to S4IN and also for the intermediate positions white gr...

Page 143: ...feedback S4IN from the external initiator as well as error and warning messages partly using special flashing patterns How these are displayed depends on the selected display mode of the device status LED see chapter 21 1 Display modi overview on page 136 21 2 1 Position feedback in normal operation No Flashing pattern ON OFF Note 1 ON continuously lit in the respective position colour Signal from...

Page 144: ...ce status displays see chapter 21 1 2 Valve mode yes no see chapter 21 1 3 and 21 3 2 Valve mode errors yes yes Errors alternately 1 second position feedback see 21 3 2 1 second error display see chapter 21 3 1 Valve mode errors warnings yes yes Errors Warnings alternately 1 second position feedback see 21 3 2 1 second error warning display see 21 3 1 Fixed colour no no Selected colour displayed p...

Page 145: ... is used even though manual override function was disabled by software x x x x x 3 in position colour 125 ms 125 ms Continuous flashing Signal from the external initiator S4 factory settings comp line 3 in Table 13 x x x x 4 in position colour 250 ms 250 ms Continuous flashing Signal from position S3 factory set tings comp line 2 in Table 13 x x x x 5 in error colour 250 ms 250 ms Continuous flash...

Page 146: ...lashing Device Reset mode active for Device Reset press again within 10 s x x x x x 10 alternately red yellow green 500 ms per colour Continuous flashing Autotune selection mode active see 20 2 2 for automatic Teach function Autotune press appropriate keys within 10 s x x x x x 11 alternately red yellow green 200 ms per colour Continuous flashing automatic Teach function active i e Autotune functi...

Page 147: ...shing alternating with the corresponding position feedback S1 S2 S3 or S4 see Table 16 No Flashing pattern Note Classic NAMUR VM VM E VM E W 1 every second 1 x 25 ms ON single flashing in white no taught position active in colour from S1 or S2 S1 or S2 active x x x x in colour of the device status or in the error colour warning colour alternating with the position feedback S1 S2 S3 S4 if an error ...

Page 148: ...erlaps The following logic is the factory setting for all display modes which report the position S1 S2 S3 S4 Error Priority Note flashing patterns active active active active S4 Flashing in S4 flashing pattern if S4 activated by DIP as S3 S4 has priority over S1 and S2 active active S4 Flashing in S4 flashing pattern if S4 activated by DIP active active active S3 Flashing in S3 flashing pattern a...

Page 149: ...8 S3 S4 S2 S1 19 S4 S1 S2 S3 20 S4 S1 S3 S2 21 S4 S2 S1 S3 22 S4 S2 S3 S1 23 S4 S3 S1 S2 24 S4 S3 S2 S1 25 particular logic see Table 19 Table 18 Display priorities when position feedback overlaps can be selected using parameter PRIO Factory settings PRIO 24 When the position feedback is from S4 external initiator note whether the external initiator acts as an Opener NC contact or as a Closer NO c...

Page 150: ... S4 see section General notes on S4 using an external initiator in chapter 21 1 1 on page 138 Special case PRIO 25 Optical feedback Display of the Top LED Position feedback S4 S3 S2 S1 S1 1 0 0 1 S2 0 0 1 0 S3 1 1 0 0 S4 0 0 0 1 no display all other combinations Table 19 Special case Display priorities when position feedback overlaps parameter PRIO 25 english Control Head Type 8681 ...

Page 151: ...ON signal from the higher level control this switching status cannot be set to an OFF signal with the manual override Activation deactivation of this function is possible using the PC service program The factory setting is magnetic manual override function active i e the function can be used it is not disabled The connection to the PC is made via the service interface Details are described in the ...

Page 152: ...conds see Fig 49 After a power failure the magnetic manual override is reset and the control head restarts in normal operating mode i e the signal from the higher level control is accepted 22 2 Mechanical manual override If additional manual overrides are required for additional service purposes or in the event of a failure of the electrical energy it is possible for all voltage and communication ...

Page 153: ...ve atmosphere switch off the power supply and secure it to prevent restarting Observe applicable accident prevention and safety regulations for electrical equipment Risk of injury from high pressure in the system Before loosening lines and valves turn off the pressure and vent the lines Risk of injury from improper maintenance Maintenance may only be carried out by trained technicians and with the...

Page 154: ...pped with 1 solenoid valve NC and 1 solenoid valve NO If process valves with several switching positions e g double seated valves are connected the safety positions of the individual actuators can be viewed according to the same logic as for a classical single seated valve Safety positions of the solenoid valves after failure of the bus communication AS interface If the Watchdog is activated defau...

Page 155: ... rinsed off properly its concentration may considerably exceed the con centration for use when the water has evaporated The chemical effect will thus be several times stronger Observe the specifications of the manufacturer and the recommendations for use of the cleaning agent manufacturer 23 5 Malfunctions In the event of any malfunctions in spite of a correct installation proceed according to the...

Page 156: ... vary depending on the version Please read the corresponding descrip tions of the respective communication variant in these operating instructions see chapter 21 2 Flashing pattern fault signalling No or faulty function of the process valves No electrical power supply or communication for the control head Check the power supply and the communication settings also refer to detailed descriptions of ...

Page 157: ...nd secure it to prevent restarting Observe applicable accident prevention and safety regulations for electrical equipment Risk of injury from high pressure Before loosening lines and valves turn off the pressure and vent the lines Risk of injury due to improper maintenance work Maintenance work may be carried out by trained technicians only and with the appropriate tools Risk of injury from uninte...

Page 158: ... 4 DIP switches for the set colour code and on the DeviceNet electronic module the DIP switches 8 switch block for Baud rate and address On the AS i electronic module note the AS interface address and the jumper positions power supply to AS interface If required read out and note special settings by the PC service program Loosen all electrical connections on the electronic module plug type connect...

Page 159: ...C service program using the PC service program Perform Teach procedure see chapter 20 1 Setting the position measuring system Teach procedure on page 130 Be sure to work carefully and cautiously so that the electronics are not damaged Close the housing following the instructions in chapter 8 Opening and Closing the Housing 24 3 Changing the valves According to the design 0 to 3 solenoid valves V1 ...

Page 160: ...ing them backwards and tighten them to a torque of 1 2 Nm Reattach the electrical connections If other connections apart from the solenoid valve connections have been removed read the corre sponding chapters on the electrical installation of the respective voltage bus connection variant Close the housing following the instructions in chapter 8 Opening and Closing the Housing 24 4 Changing the posi...

Page 161: ...ed immediately or will fail after start up Observe the requirements in accordance with DIN EN 61340 5 1 to minimise or avoid the possibility of damage caused by sudden electrostatic discharge Also ensure that you do not touch electronic components when the operating voltage is on Deinstallation procedure Switch the electrical power to the control head off Loosen the control head from the process v...

Page 162: ...ins are located on the side of the electronic module Carefully push the housing of the position measuring system downwards until the snap fit hooks snap into place Slide the electronic module carefully onto the contacts pins and fasten the electronic module using the Torx screw Remount the control head on the process valve as described in chapter 7 Assembly Adjust position measuring system to the ...

Page 163: ...ined technicians only and with the appropriate tools 25 2 Dismantling the control head Type 8681 Prior to starting with the work check the system status Procedure for variants with cable gland Open the housing following the instructions in chapter 8 Opening and Closing the Housing Uninstall the electrical connections at the terminal strip Close the housing following the instructions in chapter 8 O...

Page 164: ...e electrical and pneumatic lines cannot be accidentally damaged and or cannot indirectly damage the control head that the control head is not used as support during packaging and transport that the control head is not exposed to any mechanical stress 27 STORAGE NOTE Incorrect storage may damage the device Store the device in a dry and dust free location Storage temperature 20 65 C Kindly make sure...

Page 165: ...165 english Control Head Type 8681 ...

Page 166: ...www burkert com ...

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