Burkert 8756 Batch Operating Instructions Manual
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Burkert 8756 Batch Operating Instructions Manual

Mass dosing controller
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Type 8756 Batch
Mass Dosing Controller
Operating Instructions

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Summary of Contents for Burkert 8756 Batch

  • Page 1 Type 8756 Batch Mass Dosing Controller Operating Instructions...
  • Page 2 We reserve the right to make technical changes without notice. © Bürkert Werke GmbH & Co. KG, 2021 - 2024 Operating Instructions 2402/03 00572214 / Original EN...

  • Page 3: Table Of Contents

    Type 8756 Batch 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 ........................ 13 3.2.1 Type label .......................... 13...
  • Page 4 Type 8756 Batch Table of contents 5.2.3 Connections with external-threaded vacuum fittings ............ 28 5.2.4 Connections with external-threaded compression fittings.......... 28 5.2.5 Tri-clamp connections ....................... 29 6 Electrical connection.......................... 30 Additional documentation ....................... 30 Wire the variant büS /CANopen...................... 30 6.2.1 With büS extension cables from Bürkert ................ 30 6.2.2...
  • Page 5 Type 8756 Batch Table of contents 10.1 Problems shown by the PDO3, Error ID .................. 53 10.2 Status indicator is red ........................ 53 10.3 Status indicator is orange ....................... 53 10.4 Status indicator is yellow ........................ 54 10.5 Status indicator is blue ........................ 55 10.6 Status indicator is off ........................ 55 10.7 Status indicator flashes........................ 55...

  • 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 Fluid Control Systems Christian-Bürkert-Str.

  • Page 7: Terms And Abbreviations

    Type 8756 Batch About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8756 Batch Mass Dosing Controller büS Bürkert system bus, a communication bus developed by Bürkert and based on the...

  • Page 8: Safety

    Type 8756 Batch Safety SAFETY Intended use The device MDC is designed to measure the mass flow rate of liquids and to dose small quantities of liquids. The permitted media are listed in Technical data [} 18]. Prerequisites for safe and trouble-free operation are correct proper transportation, storage, installation, start-up, operation and maintenance.
  • Page 9 Type 8756 Batch 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 8756 Batch 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.

  • Page 11: Product Description

    Type 8756 Batch Product description PRODUCT DESCRIPTION The device is used for ultimate precision in the feedback control of medium. This document describes following variant: MDC Industrial Ethernet with an on/off valve MDC Industrial Ethernet with an interface for a modular actuator MDC büS/CANopen with an on/off valve...
  • Page 12 Type 8756 Batch Product description MDC for modular actuator 1. Screw 2. Cover 3. büS/CANopen: Not used Industrial Ethernet: Status indicator - ETH port 1 4. büS/CANopen: Not used Industrial Ethernet: Communication indicator 5. büS/CANopen: Not used Industrial Ethernet: Status indicator - ETH port 2 6.

  • Page 13: Product Identification

    Type 8756 Batch Product description Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8756 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Calibration medium 6 Bürkert internal version 7 Sealing material...

  • Page 14: Conformity Marking

    Type 8756 Batch Product description 3.2.3 Conformity marking Fig. 3: Conformity label 1 CE marking 2 Certification marking for USA and/or Canada 3 Warning: hot surface 4 Indication for disposal 3.2.4 Symbols and markings on device Earth terminal Direct current Industrial Ethernet variant...

  • Page 15: Network Status Indicator

    Type 8756 Batch Product description Colour Colour Status Description code Failure, error or fault Due to a malfunction in the device or its periphery, normal operation is not possible. orange Function check Work is being carried out on the device, which means that normal operation is temporarily not possible.

  • Page 16: Functionality

    Type 8756 Batch Product description Functionality 3.4.1 Service-büS interface Industrial Ethernet variant The Service-büS interface is used for short-term servicing of the device with the Bürkert Communicator. The Bürkert Communicator runs under Windows. Refer to Connect to the Bürkert Communicator [} 38] The USB-büS-Interface set, available as an accessory, is necessary.

  • Page 17: Memory Card

    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 18: Technical Data

    Type 8756 Batch 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 19: Medium Data

    Type 8756 Batch Technical data Degree of protection (EN 60529 / IP30* IEC 60529) *When cables or plugs and sockets are connected correctly, verified by Bürkert, not evaluated by UL. Altitude Up to 2000 m above sea level Medium temperature +15…+50 °C, only in liquid state...
  • Page 20 Type 8756 Batch Technical data Temperature of the calibration me- 25 °C dium Calibration pressure 4 bar Operating medium, MDC with on/off valve Type 6013 Maximum particle size 10 μm Maximum dynamic viscosity 350 mPa.s, with reduced flow-rate range. Take the pressure loss into account. Refer to chapter Pressure loss.

  • Page 21: Dosing Volume Range - Mdc With On/Off Valve

    Type 8756 Batch Technical data Maximum measurement range 1:3000 The measurement range is defined as the ratio of Qnominal of the device to Qmin. Refer to following figure. DN1: Qmin = 0.05 kg/h DN2: Qmin = 0.25 kg/h 4.3.2 Dosing volume range - MDC with on/off valve...
  • Page 22 Type 8756 Batch Technical data Power consumption < 16 W Typical power consumption 8 W for water and at a flow rate of 25 kg/h Communication interface Industrial Ethernet: PROFINET, EtherNet/IP, EtherCAT, Modbus TCP Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: MDC büS/CANopen with on/off valve Type 6013...
  • Page 23 Type 8756 Batch Technical data Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: MDC Industrial Ethernet with on/off valve Type 6757 Operating voltage 24 V DC ±10 % residual ripple < 2 % Power consumption < 4,5 W...

  • Page 24: Mechanical Data

    Type 8756 Batch Technical data Electrical connections M12 plug 5-pin A-coding 2 M8 socket 4-pin D-coding service büS interface Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: MDC büS/CANopen for modular actuator Operating voltage 24 V DC ±10 %...

  • Page 25: Communication

    Type 8756 Batch Technical data Communication 4.6.1 Industrial Ethernet: EtherCAT Ethernet interface X1, X2 X1: EtherCAT IN X2: EtherCAT OUT Acyclic communication (CoE) Type Complex Slave FMMUs Sync Managers Transmission speed 100 Mbit/s Data transport layer Ethernet II, IEEE 802.3 EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.

  • Page 26: Industrial Ethernet: Profinet Io

    Type 8756 Batch Technical data Transmission speed 10 and 100 Mbit/s Data transport layer Ethernet II, IEEE 802.3 4.6.4 Industrial Ethernet: PROFINET IO Topology recognition LLDP, SNMP V1, MIB2, Physical Device Minimum cycle time 2 ms not supported MRP media redundancy...

  • Page 27: Medium Connection

    Type 8756 Batch 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 28: G1/8''-Internal-Threaded Connections

    Type 8756 Batch Medium connection MDC with on/off valve Type 6724 and type 6757 Flow direction Optimal 1 metre Fig. 9: Mounting position 5.2.1 G1/8''-internal-threaded connections Remove the protective cap that closes the threaded connection. Do the medium connection on one side of the device.

  • Page 29: Tri-Clamp Connections

    Type 8756 Batch Medium connection 5.2.5 Tri-clamp connections Remove the protective cap that closes the threaded connection. Do the medium connection on one side of the device. Obey the instructions that are given by the manufacturer of the fitting used.

  • Page 30: Electrical Connection

    Additional documentation For more information on büS, read the cabling guide that is available at country.burkert.com. For more information on CANopen that is related to the device, refer to the Operating Instructions "CAN- open Network configuration"...

  • Page 31: With Canopen Cables

    Type 8756 Batch Electrical connection Colour of the büS cable conductor Signal black white CAN_H blue CAN_L Tab. 3: Signals of the büS cable conductors NOTICE! If an own mating female connector is used, then observe the following requirements for the correct op- eration of the device.

  • Page 32: Wire The Variant Industrial Ethernet

    Type 8756 Batch Electrical connection Wire the mating female connector. Observe the instructions that are given by the manufacturer of the mating female connector. Insert each conductor into the appropriate pin. Refer to the following figure. 5-pin M12 male connector (A...

  • Page 33: Change The Network Parameters

    Type 8756 Batch Electrical connection 5-pin M12 male connector Assignment Shielding 24 V Not connected Not connected M12 thread is internally con- Coding lug nected to FE Tab. 6: Pin assignment, 5-pin M12 male connector (A coding) 4-pin M8 female connector (D...

  • Page 34: Over The Bürkert Communicator Software

    Type 8756 Batch Electrical connection 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 35: Connect The Functional Earth

    Type 8756 Batch 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 36: Connection Examples With Bürkert Valves

    Type 8756 Batch Electrical connection 6.6.1 Connection examples with Bürkert valves Valve Device example Connection Proportional valves Type 2873 Use pin 1 and 6. On/off valves Type 6727, 6757, 6013 Use pin 1 and 6.

  • Page 37: Commissioning

    Type 8756 Batch 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 The operation of the device is tested at the factory with medium. Residual medium can remain in the device.

  • Page 38: 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 39 Fig. 12: USB-büS-Interface set 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 5-pin M12 female connector...

  • Page 40: Dosing Types

    Type 8756 Batch Configuration with Bürkert Communicator Click on in the Bürkert Communicator to establish the communication with the device. A window opens. 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.
  • Page 41 Type 8756 Batch Configuration with Bürkert Communicator PDO number Meaning Start dosing Tab. 9: Cyclic data received PDO number Meaning Last dose time Refer to PDO1, Last dose time [} 41] Dosing status Refer to PDO2, Dosing status [} 41] Dosing information Refer to PDO2, Dosing information [} 42]...
  • Page 42 Type 8756 Batch Configuration with Bürkert Communicator Designation Meaning No trigger accepted The device is not ready to dose and cannot receive any start command. The device cannot receive any start command in the following situations: the actuator override function is used. Set actuator override to Automatic.
  • Page 43 Type 8756 Batch Configuration with Bürkert Communicator Event Status indicator Sensor error The device sensor is defective. A maintenance operation is needed. Contact the manufacturer. Flow-rate sensor: calibration curve temporarily repaired blue The calibration curve is defective and has been repaired.

  • Page 44: Functions

    Type 8756 Batch Configuration with Bürkert Communicator Event Status indicator Actuator maintenance interval reached blue The set maintenance interval for the switching cycles for the on/off valve has been reached. Check the quality of the dosings to see, if the valve must be replaced. Refer to Maintenance [} 49]...

  • Page 45: Unexpected Flow Detection

    Type 8756 Batch Configuration with Bürkert Communicator Go to Actuator > Actuator override > Choose Open Flush the pipe until no more air bubbles are visible. If the device still detects bubbles in the pipe, then contact Bürkert. Go to Actuator >...

  • Page 46: Configure The Controller

    Type 8756 Batch Configuration with Bürkert Communicator The device waits the end of the balancing time to consider that the dosing is finished. If the device detects a non-null flow rate after the set balancing time has elapsed, then the device gener- ates an error event.

  • Page 47: Transmission Speeds Of Cyclic Data

    Type 8756 Batch Configuration with Bürkert Communicator Connect the device to the Bürkert Communicator software. Refer to Connect to the Bürkert Communic- ator [} 38] In the Bürkert Communicator software, select the device. Go to General settings >Parameters > büS >...

  • Page 48: Changing Between Büs And Canopen Mode

    Type 8756 Batch Configuration with Bürkert Communicator The transmission speed of all the PDOs is increased. To go back to the default transmission speed, click Set to default values. The function Inhibit time switches to Set diagnostic mode. Changing between büS and CANopen mode büS / CANopen variant...

  • Page 49: Maintenance

    The büS/CANopen variant supports the config-client if no memory card is used. For detailed information, refer to the Operating Instructions "Central configuration management of Bürkert devices" that can be downloaded from country.burkert.com. Replace the on/off valve Type 6013 Prepare the device for the replacement of the on/off valve: Flush the device.

  • Page 50: Replace The On/Off Valve Type 6724

    Type 8756 Batch Maintenance De-energise the device. Relieve the operating fluid pressure in the installation. With a Phillips screwdriver, loosen the screw of the female connector and remove the female connector from the coil. Dismantle the old valve from the device: With an SW14 open-end spanner, loosen the nut and remove the coil.

  • Page 51: Replace The On/Off Valve Type 6757

    Type 8756 Batch Maintenance Flush the device. Relieve the flushing fluid pressure in the installation. De-energise the device. Relieve the operating fluid pressure in the installation. Unplug by hand the electrical cable from the on/off valve. Dismantle the old valve from the device: With an hexagon key of size 1.5 mm, loosen the 2 screws of the valve and remove the valve.
  • Page 52 Type 8756 Batch Maintenance Make sure that the seal is correctly inserted. Fig. 18: Mount an on/off valve Type 6757 1 Cable 2 "NC" marking 3 Base block Turn the valve so that the "NC" marking is close to the device housing. Put the valve on the base block.

  • Page 53: Troubleshooting

    Type 8756 Batch Troubleshooting TROUBLESHOOTING 10.1 Problems shown by the PDO3, Error ID Refer to chapter PDO3, Error ID [} 42] 10.2 Status indicator is red MDC Industrial Ethernet Cause Solution The supply voltage is out of the error Operate the device within the specifications. If the status in- range.

  • Page 54: Status Indicator Is Yellow

    Type 8756 Batch Troubleshooting MDC büS/ CANopen Cause Solution The device is connected to büS and Wait until the device has found assigned fieldbus parti- searches assigned fieldbus participant. cipants. The device is connected to büS and is Wait up to one minute until the device assigns its address.

  • Page 55: Status Indicator Is Blue

    Type 8756 Batch Troubleshooting MDC büS/ CANopen 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 56: Status Indicator Goes Out Periodically

    Type 8756 Batch Troubleshooting Cause Solution The device is selected in the Bürkert After max. 10 seconds, the device automatically returns to Communicator. the previous status. 10.8 Status indicator goes out periodically Cause Solution The power supply is intermittently drop- Use a power supply with sufficient power output.

  • Page 57: Outgassing Or Bubble Formation At The Device Outlet

    Type 8756 Batch Troubleshooting Cause Solution The residual ripple on the voltage supply Use a supply voltage that conforms to the technical data is too high. given in Technical data [} 18] The device is caused to vibrate. Run the Autotune function to adapt to the operating condi- tions.

  • Page 58: Drippling

    Type 8756 Batch Troubleshooting 10.15 Drippling Cause Solution There are air bubbles in the medium. Rinse the device. The inlet pressure is too low. Increase the inlet pressure. The fluid viscosity is too high. Reduce the fluid viscosity. The diameter of the dosing needle is too Use a dosing needle with an appropriate diameter.

  • Page 59: Spare Parts And Accessories

    Type 8756 Batch 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.

  • Page 60: Additional Software

    Type 8756 Batch Spare parts and accessories Item Article number büS extension cable with 5-pin M12 connectors, 1 m 772 404 büS extension cable with 5-pin M12 connectors, 3 m 772 405 Bent 8-pin M12 male connector 775 070 11.2 Additional software Bürkert Communicator software...

  • Page 61: Uninstallation

    Type 8756 Batch Uninstallation UNINSTALLATION 12.1 Dismantling Relieve the medium pressure in the installation. Flush the device with distilled water. Relieve the flushing medium pressure in the installation. De-energise the device. Remove the mating female connectors and the mating male connectors.

  • Page 62: Logistics

    Type 8756 Batch 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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