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Summary of Contents for Burkert 8761
- Page 1 Type 8761 Electronic pressure controller Operating Instructions...
- Page 2 We reserve the right to make technical changes without notice. © Bürkert SAS, 2024 Operating Instructions 2403/00 00574774 / Original EN...
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Page 3: Table Of Contents
Type 8761 Table of contents TABLE OF CONTENTS 1 About this document.......................... 6 Manufacturer............................. 6 Symbols ............................ 6 Terms and abbreviations ........................ 7 2 Safety ................................ 8 Intended use ............................. 8 Safety instructions .......................... 8 3 Product description .......................... 11 Product overview .......................... 11 Product identification ........................ 11 3.2.1 Type label .......................... 11 3.2.2... - Page 4 Type 8761 Table of contents 6 Electrical connection.......................... 24 Additional documentation ....................... 24 Wire the variant Analogue with D-sub DE-9 male connector ............ 24 6.2.1 Digital input........................ 25 6.2.2 Relay output........................ 26 Wire the variant Analogue with a 6-pin terminal strip .............. 26 Wire the variant Industrial Ethernet.................... 27 Change the network parameters .................... 28...
- Page 5 Type 8761 Table of contents 11 Spare parts and accessories ........................ 43 11.1 Electrical accessories ........................ 43 11.2 Compression fittings for a device with G-internal-threaded connections ........ 43 11.3 Mesh filters............................ 44 12 Uninstallation............................ 45 12.1 Dismantling ............................. 45 13 Logistics .............................. 46 13.1 Transport and storage ........................ 46 13.2 Return ............................. 46...
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Page 6: About This Document
Before starting any work on the product, read and observe the respective sections of the document. Keep the document available for reference and give it to the next user. Contact the Bürkert sales office for any questions. Further information concerning the product at country.burkert.com. Manufacturer Bürkert SAS... -
Page 7: Terms And Abbreviations
Type 8761 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8761 Electronic pressure controller Unit for relative pressure Unit for absolute pressure... -
Page 8: Safety
Type 8761 Safety SAFETY Intended use The device EPC is designed to measure and regulate the pressure. The permitted media are listed in Technical data [} 16]. Prerequisites for safe and trouble-free operation are correct proper transportation, storage, installation, start-up, operation and maintenance. - Page 9 Type 8761 Safety Meet the requirements specified by EN 61340-5-1 to minimise or avoid the possibility of damage caused by a sudden electrostatic discharge. Do not touch electronic components when the supply voltage is connected. Electric shock due to electrical components Touching live parts can result in severe electric shock.
- Page 10 Type 8761 Safety Medium under pressure Medium under pressure can seriously injure people. In the event of overpressure or pressure surges, the device or lines can burst. Pneumatic lines that are defective or not securely fastened can come loose and swing around.
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Page 11: Product Description
Example of a variant EPC 10. Analogue: Not used Industrial Ethernet: Communication indicator Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8761 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version... -
Page 12: Calibration Label
Type 8761 Product description 3.2.2 Calibration label Fig. 2: Example of calibration label 1 Variant 2 Calibration medium 3 Calibration pressure 4 Installation position 5 Article number 6 Calibration date 3.2.3 Conformity marking Fig. 3: Conformity label 1 CE marking 2 Certification marking for USA and/or... -
Page 13: Namur Mode
Type 8761 Product description The colour of the status indicator indicates: Whether device diagnostics are active or not. Diagnostics are active on the device and cannot be de- activated. If diagnostics are active, then the status indicator shows whether diagnostics events have been gener- ated or not. -
Page 14: Network Status Indicator
Type 8761 Product description 3.3.3 Network status indicator Applicable for: Industrial Ethernet variant Fig. 4: Location and description of the LED's of an RJ45 socket 1 Link/Act LED (green) 2 Link LED (yellow) 3.3.4 Communication indicator Applicable for: Industrial Ethernet variant This LED shows the status of the communication between the device and the PLC (Programmable Logical Controller). -
Page 15: Actuator Is A Control Valve
To get a list of the stored data, refer to the file Device Description File that can be downloaded from country.burkert.com. If the inserted memory card is empty, then the device loads its own data on the memory card. A new memory card is empty. -
Page 16: Technical Data
Type 8761 Technical data TECHNICAL DATA Standards and directives The device complies with the valid EU harmonisation legislation. In addition, the device also complies with the requirements of the laws of the United Kingdom. The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of the EU Declaration of Conformity/UK Declaration of Conformity. - Page 17 Type 8761 Technical data Analogue input for the measured Maximum input impedance: 200 Ω value Resolution: 5 μA 0/4...20 mA Analogue input for the measured Minimum input impedance: 20 kΩ value Resolution: 2,5 mV 0...5/10 V Analogue output for the measured Maximum loop impedance: 600 Ω at an operating voltage of 24 V value 0/4...20 mA...
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Page 18: Mechanical Data
Type 8761 Technical data Mechanical data Dimensions Refer to data sheet Base block Aluminium or stainless steel 1.4404 Housing Polycarbonate (PC) Seal Refer to the type label Parts in contact with the medium 1.4310, 1.4113, 1.4305, 1.4404 Communication 4.6.1 Industrial Ethernet: EtherCAT Ethernet interface X1, X2 X1: EtherCAT IN... -
Page 19: Industrial Ethernet: Modbus Tcp
Type 8761 Technical data Data transport layer Ethernet II, IEEE 802.3 Address Conflict Detection (ACD) supported DLR (ring topology) supported CIP reset service Identity Object Reset Service Type 0 and Type 1 4.6.3 Industrial Ethernet: Modbus TCP Modbus function codes... -
Page 20: Medium Connection
Type 8761 Medium connection MEDIUM CONNECTION Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. Possible medium connections G-internal-threaded connections according to DIN ISO228/1 NPT-internal-threaded connections according to ASME/ ANSI B 1.20.1... -
Page 21: Npt-Internal-Threaded Connections
Type 8761 Medium connection Fig. 5: Pipe cut and deburred Remove the protective cap that closes the threaded connection. ferule Fig. 6: Nut and ferrule on the pipe Slide the nut [A] and then the ferrule onto the pipe. Place the seal [C] on the medium connection. -
Page 22: Flange Connections
Type 8761 Medium connection Cut the pipe squarely [1] and deburr [2]. Fig. 9: Pipe cut and deburred Remove the protective cap that closes the threaded connection. Slide the nut and then the ferrule onto the pipe. Connect the medium on one side of the device. -
Page 23: Connections With External-Threaded Compression Fittings
Type 8761 Medium connection 5.2.5 Connections with external-threaded compression fittings Do the medium connection on one side of the device. Obey the instructions that are given by the manufacturer of the fitting used. CAUTION! To avoid damage on the sealing of the medium connection, please make sure to lock the hexagonal part in place with a second wrench. -
Page 24: Electrical Connection
Type 8761 Electrical connection ELECTRICAL CONNECTION Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. Additional documentation Device description file and object description for the related Type (download from country.burkert.com). -
Page 25: Digital Input
Type 8761 Electrical connection D-sub DE-9 male connector Assignment Digital input GND for the digital input and the power supply +24 V DC Relay: normally closed contact (Break contact) Relay: reference contact Set-point input GND for the set-point input Analogue output for the measured value... -
Page 26: Relay Output
Type 8761 Electrical connection 6.2.2 Relay output The D-sub DE-9 male connector has a relay output. The relay switching can show the following events: A warning message has been generated. For example if the supply voltage is too high, then a warning message is generated. -
Page 27: Wire The Variant Industrial Ethernet
Type 8761 Electrical connection 6-pin terminal strip Assignment +24 V DC Set-point analogue input + Set-point analogue input GND Actual value analogue output + Actual value analogue output GND Tab. 7: Pin assignment of the 6-pin terminal strip Connect the conductors. Tighten the screws at a torque between 0,5...0,6 N·m (0,37...0,44 lbf·ft). -
Page 28: Change The Network Parameters
Type 8761 Electrical connection Connect the conductors according to the figure. Earth the device. Refer to Connect the functional earth [} 30] Tighten the conductors at a torque between 0.22...0.25 N (0.16...0.18 lbf·ft.) Connecting the Industrial Ethernet The cable shield is connected by the housing of the cable plug. -
Page 29: Over The Bürkert Communicator Software
Type 8761 Electrical connection Prerequisites: The industrial Ethernet variant is not EtherCAT Digital device (PC, tablet,...) with a web browser. Possibly, a USB-Ethernet adapter. Connect the device to the digital device with an Ethernet cable. Alternatively, it's possible to connect the device to the PC over a USB-Ethernet adapter. -
Page 30: Connect The Functional Earth
Type 8761 Electrical connection Connect the functional earth WARNING! Risk of ignition and risk of fire that are due to electrostatic discharge. An electrostatic discharge of the device can ignite combustible gas vapours. To avoid a build up of electrostatic charge, connect the housing to the functional earth. -
Page 31: Commissioning
Type 8761 Commissioning COMMISSIONING Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. Commissioning procedure Pressurise the pipes with medium. Flush the pipes with medium at the calibration pressure. -
Page 32: Configuration With Bürkert Communicator
Industrial Ethernet variant Use the USB-büS-Interface set with article number 00772551. Download the latest version of the Type 8920 Bürkert Communicator from country.burkert.com. Install the Bürkert Communicator on a PC. During installation, the büS stick must not be inserted at the Assemble the parts of the USB-büS-Interface set. -
Page 33: Setting The Industrial Ethernet Address
Type 8761 Configuration with Bürkert Communicator Select Connect via USB (büs Stick). Choose the port Bürkert USB büS stick, click on Finish and wait until the device symbol appears in the list of devices. In the navigation area, click on the symbol related to the device: The device menu appears. -
Page 34: Set-Point Sources And Operation Modes
Type 8761 Configuration with Bürkert Communicator Set-point sources and operation modes The process set-point value can be set by different sources. It is possible to choose which source is active at a time. The source for the set-point value can be changed during operation. If the source for the set-point value is changed, then the operation mode of the device is changed. -
Page 35: Optimise The Closed-Loop Control Parameters
On a Industrial Ethernet variant it is possible to alternatively change the related object. Refer to the related procedure in the device-specific help in the documentation of the initiation files. Download the initiation files and the related documentation at country.burkert.com. The setting of the parameter... -
Page 36: Set-Point Values Without Communication
Type 8761 Configuration with Bürkert Communicator The possible choices for the parameter Set-point value source are: Variant Analogue: Analog set-point value: the setpoint value is set via the analogue input. Variant Industrial Ethernet: Automatic: the set-point value is set via the fieldbus. If different fieldbus participants simultaneously specify a set-point value for the device, it is always the last set value that is used. -
Page 37: Maintenance
Type 8761 Maintenance MAINTENANCE If the device is operated according to the Operating instructions, then the device is maintenance-free. Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. -
Page 38: Replace The Memory Card
Type 8761 Maintenance Send the device back to the manufacturer because it must be replaced and recalibrated. Observe the re- turn procedure given in Return [} 46] Replace the memory card Applicable for: Analogue variant Industrial Ethernet variant De-energise the device. -
Page 39: Troubleshooting
Type 8761 Troubleshooting TROUBLESHOOTING 10.1 Status indicator is red EPC Analogue Cause Solution The supply voltage is out of the error Operate the device within the specifications. If the status in- range. The device can be damaged. dicator is still red, then send the device back to Bürkert. -
Page 40: Status Indicator Is Yellow
Type 8761 Troubleshooting 10.3 Status indicator is yellow EPC Analogue Cause Solution One of the following values is out of spe- Operate the device within the specifications. If the status in- cification. The sensor or the device can dicator is still yellow, then send the device back to Bürkert. -
Page 41: Status Indicator Is Off
Type 8761 Troubleshooting 10.5 Status indicator is off Cause Solution The device is not energised. Make sure that the device is correctly wired. Make sure that the voltage supply is 24 V DC. Make sure that the power supply source is working prop- erly. -
Page 42: Unstable Measured Value
Type 8761 Troubleshooting 10.9 Unstable measured value Cause Solution Functional earth (FE) is not connected To connect the functional earth, use a green-and-yellow properly. cable that is as short as possible. And the cable cross-sec- tion must be at least equal to the cross section of the power-supply cable. -
Page 43: Spare Parts And Accessories
Type 8761 Spare parts and accessories SPARE PARTS AND ACCESSORIES CAUTION! Risk of injury, property damage due to incorrect parts. Incorrect options and unsuitable spare parts can cause injuries to people and damage to the appliance and its surroundings. Only use original options and original spare parts from Bürkert. -
Page 44: Mesh Filters
Type 8761 Spare parts and accessories 11.3 Mesh filters Item Article number Stainless steel mesh filter, different mesh sizes On request Tab. 15: Mesh filters... -
Page 45: Uninstallation
Type 8761 Uninstallation UNINSTALLATION 12.1 Dismantling Relieve the medium pressure in the installation. Flush the device with a neutral medium (for example nitrogen) Relieve the flushing medium pressure in the installation. De-energise the device. Remove the electrical wiring. Disconnect the medium connections. -
Page 46: Logistics
Type 8761 Logistics LOGISTICS 13.1 Transport and storage Protect the device against moisture and dirt in the original packaging during transportation and storage. Avoid UV radiation and direct sunlight. Protect connections from damage with protective caps. Observe permitted storage temperature.
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