Burkert 8756 Operating Instructions Manual
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Burkert 8756 Operating Instructions Manual

Burkert 8756 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

  • 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 2412/04_GBen_00572214 / Original EN...

  • Page 3: Table Of Contents

    Type 8756 Batch Table of contents Table of contents About this document  6 Symbols  6 Terms and abbreviations  7 Manufacturer  7 2 Safety  8 Intended use  8 Safety instructions  8 3 Product description  11 Product overview  11 Product identification  13 3.2.1...
  • Page 4 Type 8756 Batch Table of contents 5.2.1 G1/8''-internal-threaded connections  29 5.2.2 NPT1/8''-internal-threaded connections  29 5.2.3 Connections with external-threaded vacuum fittings  29 5.2.4 Connections with external-threaded compression fittings  29 5.2.5 Tri-clamp connections  30 6 Electrical connection  31 Additional documentation  31 Wire the variant büS /CANopen  31...
  • Page 5 Type 8756 Batch Table of contents 10.2 Status indicator is red  55 10.3 Status indicator is orange  55 10.4 Status indicator is yellow  56 10.5 Status indicator is blue  57 10.6 Status indicator is off  57 10.7 Status indicator flashes  58...

  • Page 6: About This Document

    Type 8756 Batch About this document About this document The document is an important part of the product and guides the user to safe installation and operation. The information and instructions in this document are binding for the use of the product.

  • 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...

  • 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 proper transport, storage, installation, commissioning, operation and maintenance.
  • Page 9 Type 8756 Batch Safety Electrostatically sensitive components and assemblies The device contains electronic components that are susceptible to the effects of electrostatic discharging (ESD). Components that come into contact with electrostatically charged persons or objects are at risk. In the worst case scenario, these components will be destroyed immediately or fail after start-up.
  • Page 10 Type 8756 Batch Safety Technical limit values and media Non-compliance with technical limit values or unsuitable media can damage the device and lead to leaks. This can cause accidents and seriously injure or kill people. ▶ Comply with limit values. See Technical data [} 18]...

  • 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 •...
  • Page 12 Type 8756 Batch Product description MDC Industrial Ethernet 4 5 6 Fig. 2: Example of a variant MDC 1 Screw 2 Cover 3 Status indicator - ETH port 1 4 Communication indicator 5 Status indicator - ETH port 2 6 Status indicator...

  • Page 13: Product Identification

    Type 8756 Batch Product description Product identification 3.2.1 Type label Fig. 3: 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: Symbols And Markings On Device

    Type 8756 Batch Product description 3.2.4 Symbols and markings on device Earth terminal Direct current Industrial Ethernet variant DC-B0-58-FF-FF- Example of marking of the MAC address ETH1, ETH2 Ethernet connections Display elements 3.3.1 Status indicator The status indicator changes its colour based on the NAMUR recommendation NE 107. Refer to NAMUR mode [} 14].

  • 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, nor- mal 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 Applicable for: • 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 [} 39]...

  • Page 17: Service Life Of The On/Off Valve

    Type 8756 Batch Product description 3.4.4 Service life of the on/off valve MDC with on/off valve The service life of the on/off valve is reached when at least on the following problems occurs: • the product does not dose correctly any more •...

  • Page 18: Technical Data

    Type 8756 Batch Technical data Technical data Standards and directives The device complies with the valid EU harmonisation legislation. The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of the EU Declaration of Conformity.
  • Page 19 Type 8756 Batch Technical data MDC with on/off valve Type 6757 Ambient temperature 0…+50 °C Storage temperature −10…+70 °C Degree of protection (EN 60529 / IP30 IEC 60529) Altitude Up to 2000 m above sea level Medium temperature +15…+50 °C, only in liquid state...

  • Page 20: Medium Data

    Type 8756 Batch Technical data Medium data 4.3.1 Calibration conditions MDC with on/off valve Calibration medium Water Temperature of the calibration 25 °C medium Calibration pressure 4 bar 4.3.2 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.

  • Page 21: Temperature Measurement

    Type 8756 Batch Technical data 4.3.4 Temperature measurement MDC with on/off valve Temperature range −10…60 °C Measurement accuracy ±1.0 K (for mass flow rate values higher than 1.5 kg/h) Repeatability ±0.5 K (for mass flow rate values higher than 1.5 kg/h) 4.3.5 Mass flow rate measurement...

  • Page 22: Pressure Loss

    Type 8756 Batch Technical data 4.3.6 Pressure loss 4.3.7 Dosing volume range MDC with on/off valve Dosing amount [g] Medium 100 mPas Medium 1 mPas Pressure [bar rel.] Pressure [bar rel.] Fig. 8: DN1 variant. Dosing quantity depending on pressure and valve opening time < 50 g The accuracy is 0,2% of the dosing weight.

  • Page 23: Electrical Data

    Type 8756 Batch Technical data Electrical data MDC Industrial Ethernet with on/off valve Type 6013 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 Minimum temperature rating of 75 °C...
  • Page 24 Type 8756 Batch Technical data MDC büS/CANopen with on/off valve Type 6724 Operating voltage 24 V    ±10 % residual ripple < 2 % Power consumption < 3 W Typical power consumption 3 W for water and at a flow rate of 25 kg/h Communication interface büS and CANopen.
  • Page 25 Type 8756 Batch Technical data MDC Industrial Ethernet for modular actuator Operating voltage 24 V   ±10 % Power consumption < 2 W PLUS < 30 W (power consumption of the actuator) PWM signal (actuator output) Open collector, 22 kΩ-pull-up resistor and free wheeling diode, both to 24 V Analog output (actuator output) 0-10 V analog signal...

  • Page 26: Communication

    Type 8756 Batch Technical data Communication 4.5.1 Industrial Ethernet: EtherCAT Ethernet interface Port 1, Port 2 Port 1: EtherCAT IN Port 2: 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 27: Industrial Ethernet: Modbus Tcp

    Type 8756 Batch Technical data 4.5.3 Industrial Ethernet: Modbus TCP Modbus function codes 1, 2, 3, 4, 16 Transmission speed 10 and 100 Mbit/s Data transport layer Ethernet II, IEEE 802.3 4.5.4 Industrial Ethernet: PROFINET IO Topology recognition LLDP, SNMP V1, MIB2, Physical Device...

  • Page 28: 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 •...

  • Page 29: 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. 11: 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 30: 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 31: 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 "CANopen Network configuration"...

  • Page 32: With Canopen Cables

    Type 8756 Batch Electrical connection Colour of the büS cable conductor Signal 24 V  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 operation of the device.

  • Page 33: Wire The Variant Industrial Ethernet

    Type 8756 Batch Electrical connection NOTICE! Requirements for the correct operation of the device. ▶ Use a mating female connector with shield connection. ▶ Observe the specifications for the cable and conductors, that are given by the manufacturer of the mating female connector.

  • Page 34: Change The Network Parameters

    Type 8756 Batch Electrical connection 5-pin M12 male connector Assignment (A coding) 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) of the device...

  • Page 35: Over The Product Web-Server

    Type 8756 Batch Electrical connection 6.4.1 Over the product web-server NOTICE! Security risk due to default passwords. Unauthorised persons can log in to the web server and change the parameters. ▶ Change the default passwords. ▶ If the web server is not needed, then disable access with the Bürkert Communicator software, refer to Configuration with Bürkert Communicator [} 39]...

  • Page 36: Connect The Functional Earth

    Type 8756 Batch Electrical connection ▶ Change the parameters. ▶ To update the parameters, restart the device. The device restarts. The network parameters of the device are changed. Connect the functional earth WARNING! Risk of ignition and risk of fire that are due to electrostatic discharge.

  • Page 37: Connection Examples With Bürkert Valves

    Type 8756 Batch Electrical connection 8-pin M12 female connector Pin Assignment 24 V 0-10 V output 0-10 V GND Digital output (5 V level) PWM (open collector) Internal use only Not connected Coding lug Housing Tab. 8: Pin assignment, 8-pin M12 female connector ▶ Wire the mating male connector according to the pin assignment of the M12 female connector.

  • Page 38: 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 39: Configuration With Bürkert Communicator

    ▶ 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 PC.
  • Page 40 Fig. 14: 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 PC.

  • Page 41: Dosing Types

    Type 8756 Batch Configuration with Bürkert Communicator A window opens. ▶ Select Connect via USB (büs Stick). ▶ Select the port Bürkert USB büS stick, click on Finish and wait until the device symbol appears in the list of devices.
  • Page 42 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 [} 42] Dosing status Refer to PDO2, Dosing status [} 43] Dosing information Refer to PDO2, Dosing information [} 43]...
  • Page 43 Type 8756 Batch Configuration with Bürkert Communicator 8.3.3.2 PDO2, Dosing status Designation Meaning Init The device is being initialized. Ready The device is ready to dose and is waiting for the com- mand to start a dose. Dosing in progress The device is dosing.
  • Page 44 Type 8756 Batch Configuration with Bürkert Communicator Event Status indicator Voltage warning yellow The supply voltage is outside the specification. ▶ Operate the device within the specifications. Voltage error The supply voltage is outside the specification. ▶ Operate the device within the specifications.

  • Page 45: Functions

    Type 8756 Batch Configuration with Bürkert Communicator Event Status indicator Override actuator orange The closed-control loop is deactivated. A direct signal is sent to the actuator. ▶ Deactivate the direct control of the actuator. Actuator > Actuator override > Automatic...

  • Page 46: Flush Bubbles From The Pipe

    Type 8756 Batch Configuration with Bürkert Communicator If there are bubbles in the liquid, then there is a warning with the following means: • The status indicator is yellow. • An out-of-specification event is generated. 8.4.2 Flush bubbles from the pipe...

  • Page 47: Configure The Actuator

    Type 8756 Batch Configuration with Bürkert Communicator As an alternative to the automatic detection, it's possible to set a fixed balancing time after which the device considers that the dosing is finished. The dosed quantity is transmitted at the end of the balancing time.

  • Page 48: Monitor The Actuator Switching Cycles

    Type 8756 Batch Configuration with Bürkert Communicator ▶ Follow the instructions of the displayed wizard. 8.4.7 Monitor the actuator switching cycles Is used to inform via message, that the actuator maintenance is required. Check for the quality of the dosings.

  • Page 49: Transmission Speeds Of Cyclic Data

    Type 8756 Batch Configuration with Bürkert Communicator If the operating mode of the fieldbus is büS, then the CANopen status is set to Operational and the PDOs are sent to büS. If the operating mode of the fieldbus is CANopen, then the CANopen status is set to Pre-Op until the CANopen network master switches the device to Operational.

  • Page 50: Changing Between Büs And Canopen Mode

    Type 8756 Batch Configuration with Bürkert Communicator Changing between büS and CANopen mode Applicable for: • büS / CANopen variant To select the different digital communication modes (büS or CANopen), use the software Bürkert communicator. ▶ Connect the device to the Bürkert Communicator software. Refer to Connect to the Bürkert...

  • Page 51: Maintenance

    Type 8756 Batch 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]...

  • Page 52: Replace The On/Off Valve Type 6013

    Type 8756 Batch Maintenance Replace the on/off valve Type 6013 Prepare the device for the replacement of the on/off valve: ▶ Flush the device. ▶ Relieve the flushing fluid pressure in the installation. ▶ De-energise the device. ▶ Relieve the operating fluid pressure in the installation.

  • Page 53: Replace The On/Off Valve Type 6724

    Type 8756 Batch Maintenance ▶ With a Phillips screwdriver, tighten the connector a torque of max. 1 N·m (0.728 lbf.ft). Replace the on/off valve Type 6724 Prepare the device for the replacement of the on/off valve: ▶ Flush the device. ▶ Relieve the flushing fluid pressure in the installation.
  • Page 54 Type 8756 Batch Maintenance Unplug by hand the electrical cable from the on/off valve. Dismantle the old valve from the device: ▶ With an hexagon key of size 2.5 mm, loosen the 2 screws of the valve and remove the valve.

  • Page 55: Troubleshooting

    Type 8756 Batch Troubleshooting Troubleshooting 10.1 Problems shown by the PDO3, Error ID Refer to chapter PDO3, Error ID [} 43] 10.2 Status indicator is red MDC Industrial Ethernet The supply voltage is out of the error ▶ Operate the device within the specifications. If the status range.

  • Page 56: Status Indicator Is Yellow

    Type 8756 Batch Troubleshooting MDC büS/ CANopen The device is connected to büS and ▶ Wait until the device has found assigned fieldbus searches assigned fieldbus participant. participants. The device is connected to büS and is ▶ Wait up to one minute until the device assigns its configured manually, but has no ad- address.

  • Page 57: Status Indicator Is Blue

    Type 8756 Batch Troubleshooting MDC büS/ CANopen One of the following values is out of ▶ Operate the device within the specifications. If the status specification. The sensor or the device indicator is still yellow, then send the device back to can be damaged.

  • Page 58: Status Indicator Flashes

    Type 8756 Batch Troubleshooting 10.7 Status indicator flashes Cause Solution The power supply source is not work- ▶ Make sure that the power supply source is working ing properly. properly. ▶ After 10 seconds, the device automatically returns to the previous status.

  • Page 59: Unstable Measured Value

    Type 8756 Batch Troubleshooting 10.11 Unstable measured value 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- section must be at least equal to the cross section of the power-supply cable.

  • Page 60: Quantity Is Not Dosed Precisely

    Type 8756 Batch Troubleshooting 10.14 Quantity is not dosed precisely Cause Solution The pressure fluctuates. ▶ Make sure that the pressure is constant. The fluid is not homogeneous. ▶ Use an homogeneous fluid. The fluid temperature or the fluid vis- ▶...

  • Page 61: Spare Parts And Accessories

    Type 8756 Batch Spare parts and accessories Spare parts and accessories Risk of injury and/or damage due to incorrect parts. ▶ Use only original accessories and original spare parts from Bürkert. Order the parts directly on our eShop. 11.1 Electrical accessories ▶...

  • Page 62: Additional Software

    Type 8756 Batch Spare parts and accessories 11.2 Additional software Bürkert Communicator software Download from country.burkert.com büS LabView-driver Download from country.burkert.com Variant büS /CANopen and Industrial Ethernet Download from country.burkert.com EDS file Tab. 12: Documentation and software 62 | 64...

  • Page 63: 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 64: 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.

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