Type 8742 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 16 3.2.1 Type label 16 3.2.2...
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Type 8742 Table of contents Additional documentation 33 Wire the variant büS /CANopen 33 6.2.1 With büS extension cables from Bürkert 33 6.2.2 With büS cables from Bürkert 33 6.2.3 With CANopen cables 34 Wire the variant Analogue 35 6.3.1 Digital input 37 6.3.2...
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Type 8742 Table of contents 10.6 Status indicator goes out periodically 67 10.7 Replacement device adopts none of the values from the defective device 67 10.8 Replacement device does not adopt all of the values from the defective device 67 10.9 No mass flow rate 68...
Type 8742 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. •...
Type 8742 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8742 Mass flow meter Mass flow controller büS Bürkert system bus, a communication bus developed by Bürkert and based on the CANopen protocol Unit for relative pressure Ex area...
Type 8742 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. The permitted media are listed in Technical data [} 21].
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Type 8742 Safety ▶ The operator must make hazards arising from the location of the device avoidable by providing appropriate operating instructions. Electrostatically sensitive components and assemblies The device contains electronic components that are susceptible to the effects of electrostatic discharging (ESD).
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Type 8742 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 [} 21] and information on the type label.
• MFC Industrial Ethernet with proportional valve • MFC Profibus with proportional valve Product overview MFM Analogue 3 4 5 Fig. 1: Example of a variant MFM Analogue 1 Cover 2 Not used 3 Not used 4 Not used 5 Status indicator...
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Type 8742 Product description MFM Industrial Ethernet 3 4 5 Fig. 2: Example of a variant MFM Industrial Ethernet 1 Cover 2 Status indicator - ETH port 1 3 Communication indicator 4 Status indicator - ETH port 2 5 Status indicator 6 Base block 7 Flow direction marking 8 Functional earth connection...
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Type 8742 Product description MFM büS/CANopen Fig. 4: Example of a variant MFM büS/CANopen 1 Cover 2 Status indicator 3 Flow direction marking 4 Base block 5 Medium connection 6 Functional earth connection 7 Slot for memory card 8 Electrical connection MFC Analogue Fig. 5: Example of a variant MFC Analogue 1 Screw...
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Type 8742 Product description MFC Industrial Ethernet 4 5 6 Fig. 6: Example of a variant MFC Industrial Ethernet 1 Screw 2 Cover 3 Status indicator - ETH port 1 4 Communication indicator 5 Status indicator - ETH port 2 6 Status indicator 7 Proportional valve 8 Base block 9 Flow direction marking...
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Type 8742 Product description MFC PROFIBUS 4 5 6 Fig. 7: Example of a variant MFC PROFIBUS 1 Screw 2 Cover 3 Not used 4 Communication indicator 5 Not used 6 Status indicator 7 Proportional valve 8 Base block 9 Flow direction marking 10 Functional earth connection 11 Medium connection 12 Electrical connection...
Type 8742 Product description Product identification 3.2.1 Type label Fig. 9: Example of type label Type 8742 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 8 Manufacture code 9 Article number 10 Serial number...
Type 8742 Product description 3.2.3 Conformity marking Fig. 11: 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 DC-B0-58-FF-FF- Example of marking of the MAC address ETH1, ETH2...
Type 8742 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.
Type 8742 Product description LED indicator Description Meaning Green Connection to the PLC is active. ERROR Connection to the PLC is inact- ive. Tab. 2: Description of the communication indicator Functionality 3.4.1 Service-büS interface Applicable for: • Analogue variant • Industrial Ethernet variant •...
For example, data from a defective device can be transferred to a replacement device. To download the file Device Description File: ▶ Go to https://products.burkert.com/?type=8742 ▶ Scroll down to Downloads > Software Applicable for: • büS / CANopen variant The büS/CANopen variant supports the config-client if no memory card is used.
Type 8742 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. Operating conditions Ambient temperature −10…+50 °C...
Type 8742 Technical data Medium data Calibration medium Operating fluid or air Mass flow rate range (reference • 0.025…160 l /min (if measurement range 1:50) to N2 (l /min)) • 0.01…160 l /min (if measurement range 1:20) Measurement accuracy, after ±0.8% of the measured value warm-up time ±0.3% of the full scale...
Type 8742 Technical data Electrical data MFM Analogue Operating voltage 24 V ±10 % Power consumption < 1 W 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...
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Type 8742 Technical data MFM büS/CANopen Operating voltage 24 V ±10 % Power consumption < 1 W Communication interface büS and CANopen. The communication type can be selected with the Bürkert Communicator software. Electrical connections M12 plug 5-pin A-coding Minimum temperature rating of 75 °C the cable to be connected to the field wiring terminals:...
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Type 8742 Technical data MFC Analogue Operating voltage 24 V ±10 % Power consumption Refer to type label 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 meas-...
Type 8742 Technical data MFC büS/CANopen Operating voltage 24 V ±10 % residual ripple < 2 % Power consumption Refer to type label Communication interface büS and CANopen. The communication type can be selected with the Bürkert Communicator software. Electrical connections M12 plug 5-pin A-coding Minimum temperature rating of 75 °C...
Type 8742 Technical data 4.5.5 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 Mechanical data Dimensions Refer to data sheet Base block Aluminium or stainless steel 1.4305 Housing Aluminium...
Type 8742 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 •...
Type 8742 Medium connection ▶ Remove all dirt from the pipes and from the components of the installation that carry the medium. ▶ Cut the pipe squarely [A] and deburr [B]. ▶ Remove the protective cap that closes the threaded connection. Fig. 14: Pipe cut and deburred ▶...
Type 8742 Medium connection ▶ Remove all dirt from the pipes and from the components of the installation that carry the medium. ▶ Cut the pipe squarely [A] and deburr [B]. ▶ Remove the protective cap that closes the threaded connection. Fig. 18: Pipe cut and deburred ▶...
Type 8742 Medium connection ▶ 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. Obey the torques that are given by the manufacturer of the fitting used. ▶...
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"...
Type 8742 Electrical connection If a büS cable from Bürkert is used, then observe the signals of the conductors. Colour of the büS cable conductor Signal 24 V 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 operation of the device.
Type 8742 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. 5-pin M12 male connector Assignment (A coding)
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Type 8742 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.
Type 8742 Electrical connection Function Level 1 Level 2 Level 3 MFC: Start autotune Triggers the function Not used Not used MFC: Actuator control Triggers the closing of Triggers the normal Triggers the opening of the actuator operation mode the actuator MFC: Set-point value Triggers Open-loop Triggers Analog set-...
Type 8742 Electrical connection 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. • A failure message has been generated. For example if a sensor failure is detected, then a failure message is generated.
Type 8742 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. 13: Pin assignment, 5-pin M12 male connector (A coding) of the device 4-pin M8 female connector Assignment (D coding)
Type 8742 Electrical connection 6.5.1 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 [} 46] Prerequisites:...
Type 8742 Electrical connection ▶ Change the parameters. ▶ To update the parameters, restart the device. The device restarts. The network parameters of the device are changed. Wire the variant Profibus Requirements for the correct operation of the device. ▶ Use shielded cables. The cable shielding can be either a braid shielding or a foil shielding. NOTICE! Requirements for the correct operation of the device.
Type 8742 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. ▶...
Type 8742 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. ▶...
▶ 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.
▶ 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 PC.
Type 8742 Configuration with Bürkert Communicator Functions 8.4.1 Shut-off threshold Applicable for: • MFC A shut-off threshold ensures the sealing function of the control valve (except valve with PCTFE seat sealing). If the Used set-point value is below the shut-off threshold (Controller > Parameter > Setpoint), the control signal for the valve is set to 0%.
Type 8742 Configuration with Bürkert Communicator ▶ Connect the device to the Bürkert Communicator. Refer to Connect to the Bürkert Communicator [} 46] Zero point adjustment It is possible to perform a zero point adjustment procedure to adapt the sensor characteristic curve to the current conditions (mounting/installation position, medium, operating pressure).
Type 8742 Configuration with Bürkert Communicator Set-point value source Description Operation mode Analog set-point value The set-point value is set through the analogue Normal operation mode source input. (Closed-loop) Only variant Analogue Automatic The set-point value is set via the fieldbus. If dif- Normal operation mode ferent fieldbus participants simultaneously spe- (Closed-loop)
Type 8742 Configuration with Bürkert Communicator ▶ If the bus load is less than or equal to 45%, then the data transmission-speed can be increased. Do the following procedure: ▶ Select the device. ▶ Go to General settings > Parameter > PDO Configuration. ▶...
Type 8742 Configuration with Bürkert Communicator xout xd = w-x Fig. 22: Function diagram of the MFC with control valve 1 Medium inlet 2 Sensor 3 Control valve 4 Medium outlet 5 Electronics x measured value of the mass flow rate y set-point position of the pump w set-point value of the mass flow rate The sensor measures the mass flow rate and compares the measured value x with the set-point value...
Type 8742 Configuration with Bürkert Communicator 8.10.2 Industrial Ethernet variant After applying the operating voltage, the device enters a short initialisation phase and then switches to the Automatic operation mode. ▶ To change the control mode, i. e. to change the source for the set-point values. Refer to Select the source that gives the set-point value [} 53] ▶...
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.
▶ To use the function, refer to the related procedure in the specific help in the documentation of the initiation files. Download the initiation files and the related documentation at country.burkert.com ▶ The configuration is available under Controller > Parameter > Setpoint > Advanced settings >...
Type 8742 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.
Type 8742 Maintenance ▶ Insert the flange plate [2] and the screws [1]. ▶ Tighten the screws to a torque of 1.2 N·m (0,88 lbf·ft). Calibration The device is factory calibrated. A regular check of the accuracy depends on the use and the individual requirements of the application.
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Type 8742 Maintenance ▶ Restart the device to write the data on the new memory card. Possible problems related to the memory card are given in Troubleshooting [} 60] Applicable for: • büS / CANopen variant ▶ De-energise the device. ▶ With a 2.5-mm hex key, loosen the screws of the impact protection- cover and remove the impact protection-cover.
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▶ Activate this functionality in the Bürkert communicator under General settings > Parameter > Act as a configuration client > Yes. For detailed information, refer to the "Software manual | Central configuration management" (this manual exists in several languages). ▶ Go to https://products.burkert.com/?type=8742 ▶ Scroll down to Downloads > User Manuals 59 | 76...
Troubleshooting Troubleshooting 10.1 Status indicator is red MFM Analogue The supply voltage is out of the error ▶ Operate the device within the specifications. If the status range. The device can be damaged. indicator is still red, then send the device back to Bürkert.
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Type 8742 Troubleshooting MFM büS/CANopen The supply voltage is out of the error ▶ Operate the device within the specifications. If the status range. The device can be damaged. indicator is still red, then send the device back to Bürkert. büS error or CANopen-bus error, for ▶...
▶ Contact the manufacturer, because maintenance is device is defective. needed. 10.2 Status indicator is orange MFM Analogue A calibration procedure is in progress. ▶ Wait until the calibration procedure is completed. MFM Industrial Ethernet A calibration procedure is in progress.
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Type 8742 Troubleshooting MFM PROFIBUS A calibration procedure is in progress. ▶ Wait until the calibration procedure is completed. MFM büS/CANopen The device is connected to büS and ▶ Wait until the device has found assigned fieldbus searches assigned fieldbus participant. participants.
Manual set-point value or Analyze system. 10.3 Status indicator is yellow MFM Analogue 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.
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Type 8742 Troubleshooting MFM 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. Bürkert.
Type 8742 Troubleshooting MFC PROFIBUS 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. Bürkert.
Type 8742 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 ▶ Make sure that the power supply source is working properly.
Type 8742 Troubleshooting 10.9 No mass flow rate 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- ▶ If the cut-off limit is too high, decrease the value of the off limit.
Type 8742 Troubleshooting 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.
Type 8742 Troubleshooting MFC PROFIBUS The operating pressure is above the ▶ Reduce the operating pressure. tight sealing pressure of the control ▶ To eliminate the defect, return the device to the valve. manufacturer. The connected actuator is a propor- ▶...
Type 8742 Troubleshooting 10.14 Network status indicator LED indicator Meaning Action Link/Act-LED (green) fast blink- Connection to the parent pro- tocol layer is established. Link/Act-LED (green) slow Connection to the protocol blinking (directly after restart) layer is searched. Link/Act-LED (green) slow No connection to the parent ▶...
Type 8742 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 ▶...
Type 8742 Spare parts and accessories Analogue variant USB-büS-interface set, without power supply 772551 Straight 5-pin M12 female connector 772416 Straight 5-pin M12 male connector 772417 Bent 5-pin M12 female connector 772418 Memory card On request Connection cable with M12 male connector (A-coded) and free cable 566923 end, 5 m Connection cable with M12 male connector (A-coded) and free cable...
Type 8742 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. ▶...
▶ To return a used device to Bürkert, contact the Bürkert sales office. A return number is required. 13.3 Disposal Environmentally friendly disposal ▶ Follow national regulations regarding disposal and the environment. ▶ Collect electrical and electronic devices separately and dispose of them as special waste. Further information at country.burkert.com 76 | 76...
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