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Summary of Contents for Burkert 8745
- Page 1 Type 8745 Mass flow meter / Mass flow controller Operating Instructions...
- Page 2 We reserve the right to make technical changes without notice. © Bürkert SAS, 2017 - 2024 Operating Instructions 2402/04 00569558 / Original EN...
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Page 3: Table Of Contents
Type 8745 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 ........................ 12 3.2.1 Type label .......................... 12 3.2.2... - Page 4 Type 8745 Table of contents 6 Electrical connection.......................... 29 Additional documentation ....................... 29 Wire the variant Analogue with D-sub DE-9 male connector ............ 29 6.2.1 Digital input........................ 30 6.2.2 Relay output........................ 31 Wire the variant Analogue with a 6-pin terminal strip .............. 32 Wire the variant Industrial Ethernet.................... 33 Change the network parameters .................... 34...
- Page 5 Type 8745 Table of contents 10.6 Status indicator goes out periodically..................... 54 10.7 Replacement device adopts none of the values from the defective device ........ 54 10.8 Replacement device does not adopt all of the values from the defective device ...... 54 10.9 No mass flow rate ........................... 54 10.10 Unstable measured value ....................... 55...
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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 8745 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8745 Mass flow meter Mass flow controller Unit for relative pressure... -
Page 8: Safety
Type 8745 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 8745 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 8745 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
Type 8745 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 Industrial Ethernet MFM RS485/Modbus RTU MFC Analogue with proportional valve MFC Analogue with motor valve... -
Page 12: Product Identification
10. Analogue: Not used RS485/Modbus RTU: Not used Industrial Ethernet: Communication indicator Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8745 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version... -
Page 13: Calibration Label
Type 8745 Product description 3.2.2 Calibration label Mass Flow Controller Medium 1 Medium 2 P1: 1,00 barg P1: 1,00 barg Mounting: horizontal upright Id: 00****** QC passed: __ . __ . ____ Fig. 2: Example of calibration label 1 Variant 2 Calibration medium... -
Page 14: Namur Mode
Type 8745 Product description If diagnostics are active, then the status indicator shows whether diagnostics events have been generated or not. If several diagnostics events have been generated, then the status indicator shows the diagnostics event with the highest priority. -
Page 15: Network Status Indicator
Type 8745 Product description 3.3.3 Network status indicator 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 Industrial Ethernet variant This LED shows the status of the communication between the device and the PLC (Programmable Logical Controller). -
Page 16: 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 17: Technical Data
Type 8745 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 18: Medium Data
Type 8745 Technical data MFC with motor valve Ambient temperature −10…+50 °C Storage temperature −10…+70 °C Degree of protection (EN 60529 / IP20* IEC 60529) *When cables or plugs and sockets are connected correctly, verified by Bürkert, not evaluated by UL. Medium temperature −10…+70 °C... - Page 19 Type 8745 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.
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Page 20: Electrical Data
Type 8745 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 21 Type 8745 Technical data Communication interface Industrial Ethernet: PROFINET, EtherNet/IP, EtherCAT, Modbus TCP Electrical connections 3-pin terminal strip, pitch 3.5 mm 2 RJ45 sockets service büS interface Minimum temperature rating of the 90 °C cable to be connected to the field...
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Page 22: Mechanical Data
Type 8745 Technical data Digital input to activate level 3 5...28 V Relay output type Normally closed contact (break contact), free of potential Maximum ratings 1 A, 30 V, 30 VA Electrical connections 6-pin terminal strip, pitch 5.0 mm D-sub DE-9 plug service büS interface Minimum temperature rating of the 90 °C... -
Page 23: Communication
Type 8745 Technical data Status indicator PMMA Parts in contact with the medium 1.4404, Al , PPS GF40, epoxy resin, silicon, silicon nitride (sensor) Communication 4.6.1 Industrial Ethernet: EtherCAT Ethernet interface X1, X2 X1: EtherCAT IN X2: EtherCAT OUT Acyclic communication (CoE) -
Page 24: Industrial Ethernet: Modbus Tcp
Type 8745 Technical data 4.6.3 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 4.6.4 Industrial Ethernet: PROFINET IO Topology recognition LLDP, SNMP V1, MIB2, Physical Device... -
Page 25: Medium Connection
Type 8745 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 26: Npt-Internal-Threaded Connections
Type 8745 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 27: Flange Connections
Type 8745 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 28: Connections With External-Threaded Compression Fittings
Type 8745 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 29: Electrical Connection
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). Device specific help in the Bürkert Communicator software. Wire the variant Analogue with D-sub DE-9 male... -
Page 30: Digital Input
Type 8745 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 Not used Not used Analogue output for the measured value... -
Page 31: Relay Output
Type 8745 Electrical connection Available functions on MFM Reset the totaliser for the active gas. Select which gas is active among 3 gases. Available functions on MFC Start the function autotune. Trigger the remote control of the actuator or trigger the control of the actuator by the device. -
Page 32: Wire The Variant Analogue With A 6-Pin Terminal Strip
Type 8745 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. -
Page 33: Wire The Variant Industrial Ethernet
Type 8745 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. 9: 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 34: Change The Network Parameters
Type 8745 Electrical connection Connect the conductors according to the figure. Earth the device. Refer to Connect the functional earth [} 37] 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 35: Over The Bürkert Communicator Software
Type 8745 Electrical connection 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 36: Wire The Variant Rs485/Modbus Rtu
Type 8745 Electrical connection Wire the variant RS485/Modbus RTU NOTICE! Requirements for the correct operation of the device. Use a power supply unit with sufficient power. Use shielded cables only. Connect each cable end to the functional earth. For an MFC pay attention to the maximum permissible residual ripple on the operating voltage (residual ripple <... -
Page 37: Connect The Functional Earth
Type 8745 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 38: Commissioning
Type 8745 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 39: Configuration With Bürkert Communicator
RS485/Modbus RTU 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 40: Setting The Industrial Ethernet Address
Type 8745 Configuration with Bürkert Communicator 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. In the navigation area, click on the symbol related to the device: The device menu appears. -
Page 41: Change Of Medium
Type 8745 Configuration with Bürkert Communicator Or send a cyclic command with the double nominal flow rate. Change of medium At delivery the device is calibrated by the manufacturer with Nitrogen and a conversion factor to the me- dium. With the Bürkert Communicator, it is possible to change the medium by using a LUA-Script which can be downloaded at country.burkert.com. -
Page 42: Operation Modes
Type 8745 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 43: Normal Operation Mode
Type 8745 Configuration with Bürkert Communicator Operating mode Refer to Open-loop control mode Choose the source that gives the set-point value [} 45] Analyze system Choose the source that gives the set-point value [} 45] Tab. 16: Possible operating modes in the Bürkert Communicator software To change the operation mode, change the source for the set-point values. -
Page 44: Analogue Variant
Type 8745 Configuration with Bürkert Communicator 8.9.1 Analogue variant After applying the operating voltage, the device enters a short initialisation phase and then switches to the normal operation mode. The normal operation mode of a variant Analogue is the Analog set-point value operation mode. -
Page 45: Choose The Source That Gives The Set-Point Value
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 46: Set-Point Values Without Communication
Type 8745 Configuration with Bürkert Communicator 8.12 Set-point values without communication Industrial Ethernet variant RS485/Modbus RTU variant The function makes it possible to specify the set-point values of an MFC even if the communication with the external set-point value provider (for example a PLC) is broken. If the function is used, then the set-point is kept constant. -
Page 47: Maintenance
Type 8745 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 48: Cleaning And Recalibration At The Factory
Type 8745 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 [} 62]... -
Page 49: Troubleshooting
Type 8745 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 50: Status Indicator Is Orange
Type 8745 Troubleshooting Cause Solution The sensor, the internal memory or the Contact the manufacturer, because maintenance is needed. device is defective. MFC Industrial Ethernet Cause Solution The supply voltage is out of the error Operate the device within the specifications. If the status in- range. - Page 51 Type 8745 Troubleshooting MFM Industrial Ethernet Cause Solution A calibration procedure is in progress. Wait until the calibration procedure is completed. PROFINET: PLC is in Stop mode Activate the PLC. MFM RS485/Modbus RTU Cause Solution A calibration procedure is in progress.
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Page 52: Status Indicator Is Yellow
Type 8745 Troubleshooting 10.3 Status indicator is yellow MFM 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 53: Status Indicator Is Blue
Type 8745 Troubleshooting Cause Solution The set-point position for the actuator Increase the inlet pressure or decrease the outlet pressure. has (almost) reached 100%. The set- If the pressure drop in the pipe is too high, then reduce the point value cannot be reached. -
Page 54: Status Indicator Is Off
Type 8745 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 55: Unstable Measured Value
Type 8745 Troubleshooting Cause Solution The flow-rate value is below the cut-off If the cut-off limit is too high, decrease the value of the cut- limit. off limit. Refer to Cut-off Cause Solution The device is not in the normal operation... -
Page 56: Set-Point Value At 0 %, But Medium Still Flows
Type 8745 Troubleshooting Cause Solution The controller is unstable. Run the Autotune function to adapt to the operating condi- tions. Refer to Optimise the closed-loop control paramet- ers [} 44] 10.11 Set-point value at 0 %, but medium still flows MFC Analogue... -
Page 57: Set-Point Value At 0 %, No Mass Flow, But A Non-Zero Mass Flow Rate Is Measured
Type 8745 Troubleshooting 10.12 Set-point value at 0 %, no mass flow, but a non-zero mass flow rate is measured Cause Solution The installation position of the device is Install the device as recommended in Medium connection incorrect. [} 25] Run the Autotune function to adapt to the operating condi- tions. - Page 58 Type 8745 Troubleshooting LED indicator Meaning Action Link LED (yellow) is not lit Not connected to network. Check cable. Tab. 18: Meaning of the LED indicator...
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Page 59: Spare Parts And Accessories
Type 8745 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 60: Mesh Filters
Type 8745 Spare parts and accessories Device internal- threaded Pipe diameter Article number connection in accord- Stainless steel compres- Seal (1 piece) ance with DIN ISO 228/1 sion-fitting G 1/4 6 mm 901538 901575 (Copper) G 1/4 8 mm 901540 G 1/4 1/4"... -
Page 61: Uninstallation
Type 8745 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 62: Logistics
Type 8745 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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