Burkert 8746 Operating Instructions Manual
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Burkert 8746 Operating Instructions Manual

Mass flow meter / mass flow controller
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Type 8746
Mass flow meter / Mass flow controller
Operating Instructions

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Summary of Contents for Burkert 8746

  • Page 1 Type 8746 Mass flow meter / Mass flow controller Operating Instructions...
  • Page 2 We reserve the right to make technical changes without notice. © Bürkert SAS, 2015 - 2024 Operating Instructions 2402/07 00810417 / Original EN...

  • Page 3: Table Of Contents

    Type 8746 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 3.2.2...
  • Page 4 Type 8746 Table of contents 5.2.6 Tri-clamp connections ....................... 30 6 Electrical connection.......................... 31 Additional documentation ....................... 31 Wire the variant büS /CANopen...................... 31 6.2.1 With büS extension cables from Bürkert ................ 31 6.2.2 With büS cables from Bürkert.................... 31 6.2.3 With CANopen cables...................... 32 Wire the variant Analogue ....................... 33 6.3.1...
  • Page 5 Type 8746 Table of contents Replace the memory card....................... 53 10 Troubleshooting ............................ 55 10.1 Status indicator is red ........................ 55 10.2 Status indicator is orange ....................... 57 10.3 Status indicator is yellow ........................ 59 10.4 Status indicator is blue ........................ 62 10.5 Status indicator is off ........................ 62 10.6 Status indicator goes out periodically..................... 62...

  • 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 8746 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8746 Mass flow meter Mass flow controller büS Bürkert system bus, a communication bus developed by Bürkert and based on the...

  • Page 8: Safety

    Type 8746 Safety SAFETY Intended use The device MFM is designed to measure the mass flow rate of clean and dry gases. The device MFC is designed to measure and regulate the mass flow rate of clean and dry gases.
  • Page 9 Type 8746 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 8746 Safety Only feed media into the media ports that are listed in the chapter Technical data [} 18]. Observe the safety data sheet for the media used. Only use authorised devices in a potentially explosive atmosphere There are variants for this device type that may be used in Ex areas. These variants are identified by a sep- arate Ex type label.

  • Page 11: Product Description

    Type 8746 Product description PRODUCT DESCRIPTION The device is used for ultimate precision in the feedback control of medium. This document describes following variant: MFM Analogue MFM büS/CANopen MFM Industrial Ethernet MFM Profibus MFC Analogue with proportional valve MFC Analogue with motor valve MFC büS/CANopen with proportional valve...
  • Page 12 Type 8746 Product description MFM büS/ CANopen 1. Flow direction marking 2. Base block 3. Functional earth connection 4. Medium connection 5. Electrical connection Example of a variant MFM MFC Analogue, Industrial Ethernet, Profibus 1. Status indicator 2. Proportional valve 3.

  • Page 13: Product Identification

    Type 8746 Product description Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8746 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version 6 Sealing material 7 Maximum operating pressure...

  • Page 14: Conformity Marking

    Type 8746 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 8746 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 8746 Product description Functionality 3.4.1 Service-büS interface Analogue variant Industrial Ethernet variant PROFIBUS 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 [} 43] The USB-büS-Interface set, available as an accessory, is necessary.
  • Page 17 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 8746 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 8746 Technical data MFC with motor valve Ambient temperature −10…+50 °C Storage temperature −10…+70 °C Degree of protection (EN 60529 / IP65* IEC 60529) *When cables or plugs and sockets are connected correctly, verified by Bürkert, not evaluated by UL. Medium temperature −10…+70 °C...
  • Page 20 Type 8746 Technical data Turndown ratio 1:50* *Larger measuring range available on request. Repeatability ±0.1% of the full scale Measurement accuracy, after 15 ±1.5%* of the measured value minute warm-up time ±0.3%* of the full scale * If the operation medium deviates from the calibration medium, the actual measurement accuracy might vary from the value specified in the data sheet.

  • Page 21: Electrical Data

    Type 8746 Technical data Criteria Quality class Value Maximum dew point under pressure 3 °C Maximum oil concentration 0.01  mg/m Tab. 3: Quality criteria of the medium, ISO 8573-1, Compressed Air - Part 1: Contaminants and purity classes Electrical data MFM Analogue Operating voltage 24 V DC ±10 %...
  • Page 22 Type 8746 Technical data Communication interface Industrial Ethernet: PROFINET, EtherNet/IP, EtherCAT, Modbus TCP Electrical connections M12 plug 5-pin A-coding 2 M8 socket 4-pin D-coding service büS interface Minimum temperature rating of the 90 °C cable to be connected to the field wiring terminals: MFM büS/ CANopen...
  • Page 23 Type 8746 Technical data Analogue output for the measured Maximum loop impedance: 600 Ω at an operating voltage of 24 V value 0/4...20 mA Resolution: 20 μA Analogue output for the measured Maximum current: 20 mA value Resolution: 10 mV 0...5/10 V Digital input to activate level 1 0...0.2 V...

  • Page 24: Mechanical Data

    Type 8746 Technical data Minimum temperature rating of the 90 °C cable to be connected to the field wiring terminals: MFC PROFIBUS Operating voltage 24 V DC ±10 % residual ripple < 2 % Power consumption Refer to type label Communication interface PROFIBUS-DP-V1...

  • Page 25: Industrial Ethernet: Ethernet/Ip

    Type 8746 Technical data 4.6.2 Industrial Ethernet: EtherNet/IP Pre-defined standard objects Identity Object (0x01) Message Router Object (0x02) Assembly Object (0x04) Connection Manager (0x06) DLR Object (0x47) QoS Object (0x48) TCP/IP Interface Object (0xF5) Ethernet Link Object (0xF6) DHCP supported...

  • Page 26: Profibus Dpv1

    Type 8746 Technical data 4.6.5 PROFIBUS DPV1 Acyclic communication DPV1 Class 1 Read/Write DPV1 Class 2 Read/Write/Data Transport Transmission speed Fixed values from 9.6 kbit/s to 12 Mbit/s Autodetect mode is supported...

  • Page 27: Medium Connection

    Type 8746 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: Npt-Internal-Threaded Connections

    Type 8746 Medium connection Fig. 6: Pipe cut and deburred Remove the protective cap that closes the threaded connection. ferule Fig. 7: 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 29: Flange Connections

    Type 8746 Medium connection Cut the pipe squarely [1] and deburr [2]. Fig. 10: 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 30: Connections With External-Threaded Compression Fittings

    Type 8746 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 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 "CAN- open Network configuration"...

  • Page 32: With Canopen Cables

    Type 8746 Electrical connection Colour of the büS cable conductor Signal 24 V DC black white CAN_H blue CAN_L Tab. 4: 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 33: Wire The Variant Analogue

    Type 8746 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 mat- ing female connector.
  • Page 34 Type 8746 Electrical connection NOTICE! UL approved versions must be supplied in one of the following ways: "Limited Energy Circuit" (LEC), according to UL / IEC61010-1 "Limited Power Source" (LPS), according to UL / IEC60950 SELV / PELV with UL-approved overcurrent protection, designed according to UL / IEC61010-1, Table 18 (e.g.

  • Page 35: Digital Input

    Type 8746 Electrical connection 5-pin M12 male connector Assignment GND for the analogue output and the set-point input 24 V Set-point input Analogue output for the measured value M12 thread is internally con- Coding lug nected to FE Tab. 9: Pin assignment, 5-pin M12 male connector (A coding) Connect the cable shielding to the mating female connector.

  • Page 36: Relay Output

    Type 8746 Electrical connection Device Default assignment Start autotune Tab. 11: Default assignment of the digital input To choose the function to be remotely triggered over the digital input, use the Bürkert Communicator software. Only one of the available functions can be associated to the digital input.

  • Page 37: Wire The Variant Industrial Ethernet

    Type 8746 Electrical connection Device Default assignment The set-point value cannot be reached Tab. 13: Default assignment of the relay output To choose the events that are assigned to the relay output, use the Bürkert Communicator software. Several events can be associated to the relay output.

  • Page 38: Change The Network Parameters

    Type 8746 Electrical connection 4-pin M8 female connector (D Assignment coding) Tx + Rx + Tx − Rx − Coding lug M8 thread is internally connec- ted to FE Tab. 15: Pin assignment, 4-pin M8 If a protocol other than EtherCAT is used, plug an Ethernet cable in one or both sockets.

  • Page 39: Over The Bürkert Communicator Software

    Type 8746 Electrical connection Open the web browser. In the address bar of the web browser, enter 192.168.1.100. The home page of the web server opens. Some device data are shown. Open a web server session, to configure the network parameters of the device.
  • Page 40 Type 8746 Electrical connection NOTICE! UL approved versions must be supplied in one of the following ways: "Limited Energy Circuit" (LEC), according to UL / IEC61010-1 "Limited Power Source" (LPS), according to UL / IEC60950 SELV / PELV with UL-approved overcurrent protection, designed according to UL / IEC61010-1, Table 18 (e.g.

  • Page 41: Change The Profibus Network Parameters

    Type 8746 Electrical connection Change the Profibus network parameters PROFIBUS variant All the variants Profibus have the same default Profibus adress 126. Before commissioning the device, change its network parameters. If several devices must be connected to the same Profibus network, then connect one device at a time and change its network parameters.

  • Page 42: Commissioning

    Type 8746 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 43: Configuration With Bürkert Communicator

    PROFIBUS 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 44: Setting The Industrial Ethernet Address

    / CANopen variant Use the USB-büS-Interface set with article number 00772426. 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 Insert the micro-USB plug into the büS stick.

  • Page 45: Functions

    Type 8746 Configuration with Bürkert Communicator Functions 8.4.1 Shut-off threshold Only MFC variant A shut-off threshold ensures the sealing function of the control valve (except valve with PCTFE seat seal- ing). If the Used set-point value is below the shut-off threshold (Controller >...

  • Page 46: User-Defined Adjustment

    Type 8746 Configuration with Bürkert Communicator Browse the downloaded zip-File. The procedure of changing medium starts. User-defined adjustment At delivery the device is calibrated by the manufacturer. With the Bürkert Communicator, it is possible to define an adjustment procedure with up to 32 calibration points.

  • Page 47: Operation Modes

    Type 8746 Configuration with Bürkert Communicator Set-point value source Description Operation mode Automatic The set-point value is set via the Normal operation mode (Closed- fieldbus. If different fieldbus parti- loop) Only variant Industrial Ethernet cipants simultaneously specify a set-point value for the device, it is always the last set value that is used.

  • Page 48: Normal Operation Mode

    Type 8746 Configuration with Bürkert Communicator Operating mode Refer to Manual set-point value Choose the source that gives the set-point value [} 50] Stored set-point value Choose the source that gives the set-point value [} 50] Open-loop control mode Choose the source that gives the set-point value [} 50] Analyze system Choose the source that gives the set-point value [} 50]...

  • Page 49: Analogue Variant

    Type 8746 Configuration with Bürkert Communicator To change the operation mode, change the source for the set-point value. Refer to Choose the source that gives the set-point value [} 50] 8.10.1 Analogue variant After applying the operating voltage, the device enters a short initialisation phase and then switches to the normal operation mode.

  • Page 50: Choose The Source That Gives The Set-Point Value

    Download the initiation files and the related documentation at country.burkert.com. 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.

  • Page 51: Set-Point Values Without Communication

    Type 8746 Configuration with Bürkert Communicator Open-loop control mode: to directly set the set-point position (y) to the actuator. The value that is given in the menu Actuator > Parameter > Actuating variable is the setpoint position (y) that is used. A restart of the device sets the set-point position (y) to zero.

  • Page 52: Maintenance

    Type 8746 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 53: Cleaning And Recalibration At The Factory

    Type 8746 Maintenance Cleaning and recalibration at the factory If the device is contaminated or damaged by operation, then the measured mass flow rate could no longer correspond to the actual mass flow rate. Send the device back to the manufacturer because it must be replaced and recalibrated. Observe the re- turn procedure given in Return [} 71]...
  • Page 54 Troubleshooting [} 55] büS / CANopen variant 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.

  • Page 55: Troubleshooting

    Type 8746 Troubleshooting TROUBLESHOOTING 10.1 Status indicator is red MFM 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 56 Type 8746 Troubleshooting Cause Solution The device is connected to büS, but does Make sure that the process value is correctly allocated. not find the process value to be pro- Check the assigned büS participant that is defective. cessed. Make sure that the assigned büS participant provides the cyclic data.

  • Page 57: Status Indicator Is Orange

    Type 8746 Troubleshooting Cause Solution Incorrect Autotune or Autotune aborted. Make sure that the medium flows through the device. Check the Q of the device. Start the Autotune again. After a restart of the device, the error will be reset.
  • Page 58 Type 8746 Troubleshooting MFM PROFIBUS Cause Solution A calibration procedure is in progress. Wait until the calibration procedure is completed. MFM büS/ CANopen Cause Solution The device is connected to büS and Wait until the device has found assigned fieldbus parti- searches assigned fieldbus participant.

  • Page 59: Status Indicator Is Yellow

    Type 8746 Troubleshooting MFC 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 60 Type 8746 Troubleshooting MFM PROFIBUS 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 61 Type 8746 Troubleshooting Cause Solution A change of the Ethernet protocol is in Wait until the change of protocol is completed. It can take progress. up to 1 minute. The set-point position for the actuator Increase the inlet pressure or decrease the outlet pressure.

  • Page 62: Status Indicator Is Blue

    Type 8746 Troubleshooting 10.4 Status indicator is blue Cause Solution Error in the internal memory. Contact the manufacturer, because maintenance is needed. 10.5 Status indicator is off Cause Solution The device is not energised. Make sure that the device is correctly wired.

  • Page 63: No Mass Flow Rate

    Type 8746 Troubleshooting 10.9 No mass flow rate Cause Solution The pipes are too large or not yet fully Vent the pipes. vented. Change the pipe diameter. The flow-rate value is below the cut-off If the cut-off limit is too high, decrease the value of the cut- limit.

  • Page 64: Set-Point Value At 0 %, But Medium Still Flows

    Type 8746 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 must compensate for irregu- Install a suitable pressure regulator in front of the device.

  • Page 65: Set-Point Value At 0 %, No Mass Flow, But A Non-Zero Mass Flow Rate Is Measured

    Type 8746 Troubleshooting MFC büS/CANopen The connected actuator is a proportional valve and Reduce the operating pressure. the operating pressure is above the tight sealing To eliminate the defect, return the device to the pressure of the proportional valve. manufacturer 10.12...
  • Page 66 Type 8746 Troubleshooting LED indicator Meaning Action Link/Act-LED (green) slow blinking No connection to the parent pro- Check the cable. (20 s after restart) tocol layer. Link/Act-LED (green) is OFF. No connection to the network. Check the cable. Link-LED (yellow) is ON Connection to the network is es- tablished.

  • Page 67: Spare Parts And Accessories

    Type 8746 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 68 Type 8746 Spare parts and accessories PROFIBUS variant USB-büS-interface set, without power supply 772 551 Straight 5-pin M12 female connector 772 416 Bent 5-pin M12 female connector 772 418 Memory card On request Connection cable with M12 female connector (A-coded) and free cable...

  • Page 69: Compression Fittings For A Device With G-Internal-Threaded Connections

    Type 8746 Spare parts and accessories 11.2 Compression fittings for a device with G-internal- threaded connections The threaded pipe-connection plates of the device obey standard DIN ISO 228/1. If the pipe fittings are not delivered with the device, then choose pipe fittings that are adapted to the medium connection of the device.

  • Page 70: Uninstallation

    Type 8746 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 71: Logistics

    Type 8746 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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