Burkert 8756 Operating Instructions Manual Download Page 22

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Type 8756

Technical data

english

▪

the flow-rate value

▪

the size of the product fluid connections

▪

the type of the product fluid connections

▪

the size of the product base block

▪

the type of operating fluid

The following figure gives the pressure loss for water through an
MFM.

0,00

1,00

2,00

3,00

4,00

5,00

6,00

7,00

8,00

9,00

10,00

11,00

12,00

13,00

14,00

15,00

16,00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

1mPas

5mPas

10mPas

25mPas

50mPas

100mPas

150mPas

200mPas

[kg/h]

∆p [bar]

Nominal flow rate Q

Fig. 9: Pressure loss diagram, MFM

4.5.3

Mass Flow Controller with pump

Operating fluid

Liquids

Type of liquids

Liquids that are clean and ho-
mogeneous

Maximum particle size

10 μm

Minimum dynamic viscosity

0.3 mPa.s

Maximum dynamic viscosity

200 mPa.s, with reduced flow-
rate range. If the flow rate is
equal to 8 kg/h, then the fluid
viscosity must be max.
50 mPa.s.

Take the pressure loss into ac-
count. Refer to chapter:

Pres-

sure loss, MFC with pump
[

}

24]

Tab. 14: Operating fluid

Temperature range

–10...60 °C

Measurement accuracy for
mass flow rate values higher
than 1.5 kg/h

±1.0 °C

Repeatability for mass flow rate
values higher than 1.5 kg/h

±0.5 °C

Tab. 15: Temperature measurement

Mass flow rate range

0.05...8 kg/h

Summary of Contents for 8756

Page 1: ...Type 8756 büS CANopen Analogue Mass Flow Meter Mass Flow Controller for liquids Operating Instructions ...

Page 2: ...rve the right to make technical changes without notice Technische Änderungen vorbehalten Sous réserve de modifications techniques Bürkert SAS 2020 2021 Operating Instructions 2107 02_EU en 00573797 Original EN ...

Page 3: ...data 17 4 1 Conformity 17 4 2 Operating conditions 17 4 3 Product materials 19 4 4 Dimensions weight 20 4 5 Fluid data 20 4 6 Electrical data 29 5 Fluid connection 33 5 1 Safety instructions 33 5 2 Installation steps 35 5 3 Installation procedure 35 6 Electrical connection 37 6 1 Safety instructions 37 6 2 Additional documentation 37 6 3 Wire the product variant büS CANopen 38 6 4 Wire the product...

Page 4: ...control parameters MFC 59 8 9 Choose the source that gives the set point value MFC 60 8 10 Set point values without communication MFC büS CANopen 61 9 Maintenance 61 9 1 Safety instructions 61 9 2 Replace the memory card 62 9 3 Sterilising a product variant MFM with hot water 63 9 4 Sterilising a product variant MFM with steam 63 10 Troubleshooting 64 10 1 Problems shown by the product status indi...

Page 5: ...rer Bürkert Fluid Control Systems Christian Bürkert Str 13 17 D 74653 Ingelfingen The contact addresses are available at country burkert com in the Contact menu 1 2 Used symbols DANGER Warns of a danger that leads to death or serious injuries WARNING Warns of a danger that can lead to death or serious injuries CAUTION Warns of a danger that can lead to minor injuries ATTENTION Warns of property da...

Page 6: ...s 2 SAFETY INSTRUCTIONS 2 1 Warranty The warranty is conditional on compliant use of the product in observance of the operating conditions 2 2 Intended use Improper use of the product may be a hazard to people nearby equipment and the environment MFM Type 8756 is used exclusively to measure the mass flow rate of liquids MFC Type 8756 is used exclusively to measure and regu late the mass flow rate ...

Page 7: ...or electrical equipment DANGER Burn hazard and fire hazard that are due to hot surface of the product Do not touch the hot surface with bare hands Wear safety gloves to touch the product Keep the product away from any highly flammable materials or fluids WARNING Risk of injury that is due to escape of the fluid Contact with the operating fluid its reaction products and va pours can cause injuries ...

Page 8: ...s electronic components which are subject to electrostatic discharge ESD Contact with electrostatically charged persons or objects endangers these components In the worst case they could be defective immediately or might fail when energised To minimise or even avoid any damage caused by an electro static discharge take all the precautions described in the EN 61340 5 1 Do not touch any of the live ...

Page 9: ...ions with external threaded compression fit tings 4 M4 screw for functional earth connection 5 Base block 6 Product status indicator The indicator operates according to NAMUR NE 107 7 Not used 8 Not used 9 Not used 10 M3 hexalobular internal screw 11 Cover 12 büS interface for Bürkert Communicator software 13 Slot for the memory card 3 1 2 Mass Flow Controller with pump 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 10: ...on fit tings 4 M4 screw for functional earth connection 5 Base block 6 Pump 7 Product status indicator The indicator operates according to NAMUR NE 107 8 Not used 9 Not used 10 Not used 11 M3 hexalobular internal screw 12 Cover 13 büS interface for Bürkert Communicator software 14 Slot for the memory card 3 1 3 Mass Flow Controller with proportional valve 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Fig 3 Pro...

Page 11: ...it tings 4 M4 screw for functional earth connection 5 Base block 6 Proportional valve 7 Product status indicator The indicator operates according to NAMUR NE 107 8 Not used 9 Not used 10 Not used 11 M3 hexalobular internal screw 12 Cover 13 büS interface for Bürkert Communicator software 14 Slot for the memory card 3 1 4 Mass Flow Controller for modular actuator 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Fi...

Page 12: ...tor The product status indicator changes its colour based on the NAMUR recommendation NE 107 The colour of the product status indicator gives the following pieces of information Whether product diagnostics are active or not Diagnostics are active on the product and cannot be deactivated If product diagnostics are active then the product status indic ator shows whether diagnostics events have been ...

Page 13: ...nce operation MFM The product continues to measure MFC The product continues to regulate but a function is temporarily restricted Colour 1 Colour code for a PLC Diagnostics event 2 Green 1 Diagnostics are active and no diagnostics event has been generated MFC The product operates in the normal operat ing mode or in Stored set point value operating mode Refer to chapter Normal operating mode MFC 57...

Page 14: ...W IP65 NEC Class 2 only 25 0 kg h H2O büS CANopen Ta 10 C 60 C S N 1000 W41ME PS 100barg VAAg 00 1 2 3 8 9 10 11 12 13 14 15 4 5 6 7 Fig 6 Description of the type label example 1 Type of the product 2 Supply voltage direct current 3 Consumption according to UL 61010 1 typical consump tion 3 4 For UL certified products only use limited power circuits of NEC Class 2 5 Warning symbol Observe the Oper...

Page 15: ...o get a list of the stored data refer to the Help for the Initiation file that can be downloaded from country burkert com If the inserted memory card is empty then the product loads its own data on the memory card A new memory card is empty The data on the memory card can be transferred to another product with the same article number For example the data can be transferred from a defective product...

Page 16: ... is equipped with a valve seat seal that is made of a soft material such as FKM FFKM or EPDM If the valve seat seal is made of a hard material such as PCTFE then the control valve may not be tight Products with a nominal valve diameter of 0 05 mm or 0 1 mm have a valve seat seal made of a hard material 3 7 Customised actuator An MFC for modular actuator can be combined to the following actuators a...

Page 17: ...r use Do not use the product in outdoor areas 4 2 1 Mass Flow Meter Ambient temperat ure 0 C 50 C Fluid temperature 10 C 70 C only in liquid state Ambient humidity 95 non condensing IP Code according to EN 60529 IP65 4 If the following conditions are met Cables must be connected Mating connectors must be plugged in and tightened Tab 2 Operating conditions of an MFM Fluid connections Seal material ...

Page 18: ... Inlet pressure 0 bar Outlet pressure max 10 bar Tab 4 Operating conditions of an MFC with pump 4 2 3 Mass Flow Controller with proportional valve Ambient temperat ure 0 C 50 C Fluid temperature 10 C 60 C only in liquid state Ambient humidity 95 non condensing IP Code according to EN 60529 IP65 6 If the following conditions are met Cables must be connected Mating connectors must be plugged in and ...

Page 19: ...rding to DIN ISO228 1 NPT internal threaded fluid connections according to ASME ANSI B 1 20 1 metal max 50 bar Fluid connections Seal material Operating pressure Fluid connections with ex ternal threaded vacuum fit tings Fluid connections with ex ternal threaded compression fittings metal FFKM PCTFE max 50 bar Tab 7 Maximum operating pressure 4 3 Product materials Product part Material Base block ...

Page 20: ...ous Maximum particle size 10 μm Minimum dynamic viscosity 0 3 mPa s Maximum dynamic viscosity 200 mPa s Take the pressure loss into ac count Refer to chapter Pres sure loss of an MFM 21 Tab 10 Operating fluid Density range 0 5 kg l Measurement accuracy for mass flow rate values higher than 1 5 kg h 0 01 kg l Repeatability for mass flow rate values higher than 1 5 kg h 0 005 kg l Tab 11 Density mea...

Page 21: ... response time depends on the operating fluid used Tab 13 Mass flow rate measurement 0 kg h 40 20 60 80 10 30 50 70 120 100 140 160 90 110 130 150 190 170 210 230 180 200 220 250 240 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 260 270 280 290 300 310 320 330 360 340 380 400 350 370 390 420 410 430 440 450 460 470 480 490 500 Nominal flow rate Q Measurement range Fig 8 MFM Mea...

Page 22: ...flow rate Q Fig 9 Pressure loss diagram MFM 4 5 3 Mass Flow Controller with pump Operating fluid Liquids Type of liquids Liquids that are clean and ho mogeneous Maximum particle size 10 μm Minimum dynamic viscosity 0 3 mPa s Maximum dynamic viscosity 200 mPa s with reduced flow rate range If the flow rate is equal to 8 kg h then the fluid viscosity must be max 50 mPa s Take the pressure loss into ...

Page 23: ...ement range depending on nominal flow rate 23 Settling time t95 1 s for water at 20 C The settling time depends on the operating fluid used Tab 16 Mass flow rate measurement 0 1 2 3 4 5 6 7 8 kg h 40 20 60 80 10 30 50 70 90 100 140 120 160 110 130 150 Nominal flow rate Q Measurement range Fig 10 MFC with pump Measurement range depending on nom inal flow rate Calibration fluid Water Temperature of ...

Page 24: ...e product Fig 11 Pressure loss diagram MFC with pump for water at 20 C 4 5 5 Mass Flow Controller with proportional valve Operating fluid Liquids Type of liquids Liquids that are clean and ho mogeneous Maximum particle size 10 μm Minimum dynamic viscosity 0 3 mPa s Maximum dynamic viscosity 40 mPa s with reduced flow rate range Take the pressure loss into ac count Refer to chapter Pres sure loss M...

Page 25: ...ating fluid used Tab 20 Mass flow rate measurement 0 kg h 40 20 60 80 10 30 50 70 120 100 140 160 90 110 130 150 190 170 210 230 180 200 220 250 240 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 260 270 280 290 300 310 320 Nominal flow rate Q Measurement range Fig 12 MFC with proportional valve Measurement range de pending on nominal flow rate Temperature range 10 60 C Measurem...

Page 26: ...rate values higher than 1 5 kg h 0 005 kg l Tab 23 Density measurement 4 5 6 Pressure loss MFC with proportional valve 0 3 mPas 5mPas 10mPas 20 mPas 40 mPas kg h p bar 1 mPas 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Nominal flow rate Q Fig 13 Pressure loss diagram MFC with proportional valve 4 5 7 Mass Flow Controller for modular actuator ...

Page 27: ... of the product to Qmin Qmin 0 05 kg h Refer to figure MFC for modular actuator Meas urement range depending on nominal flow rate 28 Repeatability 0 1 of the measured value PLUS 0 0007 kg h 0 0007 kg h zero point stabil ity Response time t95 300 ms The response time depends on the operating fluid used Tab 26 Mass flow rate measurement Operating fluid Liquids Type of liquids Liquids that are clean ...

Page 28: ... 5 8 Pressure loss of an MFC for modular actuator An Mass Flow Controller MFC for modular actuator has a pres sure loss that depends on the following parameters the flow rate value the size of the product fluid connections the type of the product fluid connections the size of the product base block the type of operating fluid The following figure gives the pressure loss for water through an MFC fo...

Page 29: ...ical data product variant Analogue Relay type Change over relay with 1 normally closed contact break contact and 1 normally open contact make contact Both contacts are free of potential Maximum ratings 1 A 30 V 30 VA Tab 31 Relay output product variant Analogue 0 4 20 mA Maximum loop impedance 600 Ω Resolution 20 μA 0 5 10 V Maximum current 20 mA Resolution 10 mV Tab 32 Analogue output for the mea...

Page 30: ...umption 52 W Typical power con sumption 16 W for water and at a flow rate of 8 kg h Tab 36 General electrical data product variant Analogue Relay type Change over relay with 1 normally closed contact break contact and 1 normally open contact make contact Both contacts are free of potential Maximum ratings 1 A 30 V 30 VA Tab 37 Relay output product variant Analogue 0 4 20 mA Maximum loop impedance ...

Page 31: ...flow rate of 25 kg h Communication interface büS and CANopen The communica tion type can be chosen with the Bürkert Communicator software Tab 42 General electrical data product variant büS CANopen Operating voltage 24 V DC 10 residual ripple 2 Power consumption Maximum power con sumption 13 W Typical power con sumption 10 W for water and at a flow rate of 25 kg h Tab 43 General electrical data pro...

Page 32: ...UL certified components only use limited power circuits of NEC Class 2 Operating voltage 24 V DC 10 Maximum power con sumption 4 W plus max 65 W power consump tion of the actuator Communication interface büS and CANopen The communica tion type can be chosen with the Bürkert Communicator software PWM signal open col lector 22 kΩ pull up resistor and free wheel ing diode both to 24 V Tab 49 General ...

Page 33: ...be connected to the field wiring terminals 75 C Tab 55 Temperature 5 FLUID CONNECTION 5 1 Safety instructions DANGER Risk of injury that is due to pressure in the installation or in the product Before working on the installation or product cut the pres sure Vent and drain the pipes DANGER Risk of injury from electric shocks Before working on the installation or product switch off the power supply ...

Page 34: ...e make sure that no fluid flows when the pump is switched off Take into account the static pressure CAUTION Risk of injury that is due to leakage in an MFC with propor tional valve Use pipes with a diameter that is adapted to the fluid connec tion of the product and with a smooth surface ATTENTION Malfunction that is due to contamination If a contaminated operating fluid is used then install a fil...

Page 35: ...7 3 Commission the product Refer to chapter Commissioning 45 5 3 Installation procedure No inlet section and no outlet section for flow conditioning are re quired We recommend that you install the product in a horizontal pipe or in a vertical pipe as shown in the following figures Flow direction Risk of product malfunction due to bubble collection Fig 16 Horizontal mounting positions Flow directio...

Page 36: ... manufacturer of the fit ting used Do the fluid connection on the other side of the product in the same way 5 3 3 Fluid connections with external threaded vacuum fittings Remove the protective cap that closes the connection Do the fluid connection on one side of the product Obey the instructions that are given by the manufacturer of the fitting used Obey the torques that are given by the manufactu...

Page 37: ...agnetic fields If the functional earth FE is not attached then the requirements of the EMC directive are not met Connect the housing to the functional earth FE Use a green and yellow 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 ATTENTION Requirements for the proper function of the product Use a power supply uni...

Page 38: ...bles Screw the mating female connector to the 5 pin male con nector to the torque given by the manufacturer of the mating female connector Do the functional earthing of the product Refer to chapter Connect the functional earth 44 6 3 2 With büS cables from Bürkert Requirements for the correct operation of the product Refer to the cabling guide that is available in English and German at country bur...

Page 39: ...e manufacturer of the mating female con nector Insert each conductor into the appropriate pin Refer to the following figure M12 thread is internally connected to FE 1 2 3 4 5 6 Fig 18 BüS CANopen Pin assignment 5 pin M12 male con nector A coding 1 Shield 2 24 V 3 GND 4 CAN_H 5 CAN_L 6 Coding lug Take a strand of the cable shielding and insert the strand into pin 1 Screw the mating female connector...

Page 40: ...re given by the manufacturer of the mating female con nector Insert each conductor into the appropriate pin Refer to the following figure M12 thread is internally connected to FE 1 2 3 4 5 6 Fig 19 BüS CANopen Pin assignment 5 pin M12 male con nector A coding 1 Shield 2 24 V 3 GND 4 CAN_H 5 CAN_L 6 Coding lug Take a strand of the cable shielding and insert the strand into pin 1 Screw the mating fe...

Page 41: ...nnector M12 thread is internally connected to FE Fig 20 MFM Analogue Pin assignment 5 pin M12 male con nector A coding 1 GND for the analogue output 2 24 V 3 GND 4 Not connected 5 Analogue output for the measured value 6 Coding lug Connect the cable shielding to the mating female connector If your product variant is an MFC then wire the mating female connector according to the pin assignment of th...

Page 42: ...nector to the torque given by the manufacturer of the mating male connector Do the functional earthing of the product Refer to chapter Connect the functional earth 44 6 4 1 Digital input The 5 pin M12 female connector has a digital input A digital input is used to remotely trigger a function The following functions are available on an MFM product variant Reset the totaliser for the active fluid Th...

Page 43: ... closing of the actuator Triggers the normal operat ing mode Triggers the opening of the actuator Reset totalizer Triggers the function Not used Not used Tab 61 Actions triggered by the switching levels 6 4 2 Relay output The 5 pin M12 female connector has a relay output The relay switching of an MFM product variant can show the fol lowing events A warning message has been generated For example if...

Page 44: ... 6 5 Connect the functional earth To do the functional earthing of the product obey the following instructions Use a green and yellow 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 With a flat screwdriver of size 6 5 mm loosen the M4 screw M4 screw Fig 23 Location of the M4 screw for the connection of the func ti...

Page 45: ...pressure is not higher than the operating pressure value on the product data sheet Find the data sheet on our homepage country burkert com WARNING Risk of injury from improper operation Improper operation can lead to injuries and damage to the product and its environment Before commissioning make sure that the operating person nel are familiar with and fully understand the content of the Operating...

Page 46: ...st then buy a new memory card from your Bürkert sales office Product variant büS CANopen Choose between CANopen communication and büS communication Refer to chapter Set the CANopen communication or the büS communication 55 The product operates normally 7 3 Commissioning procedure MFC with pump If the pipes are empty and vented and if the pump runs dry then the pump of the MFC can be damaged Set th...

Page 47: ...ipes completely Connect the product to the Bürkert Communicator software Refer to chapter Connect the product to the Bürkert Commu nicator software 53 Flush bubbles from the pipes as described in chapter Flush bubbles from the pipe MFC with proportional valve 51 Wire the product again as described in chapter Electrical con nection 37 Energise the product If product specific data is stored on the i...

Page 48: ...Wire the product again as described in chapter Electrical con nection 37 Energise the product If product specific data is stored on the inserted memory card then the product adopts the data To get a list of the stored data at product delivery refer to the Help for the Initiation file that can be downloaded from country burkert com If the inserted memory card is empty then the product loads its own...

Page 49: ...safety gloves to touch the product Keep the product away from any highly flammable materials or fluids WARNING Risk of injury that is due to escape of the fluid Contact with the operating fluid its reaction products and va pours can cause injuries Inhaled vapours can be harmful Observe all applicable accident protection and all applicable safety regulations relating to the operating fluid used WAR...

Page 50: ...ed If the product variant is an MFC with pump then flush bubbles from the pipe as described in chapter Flush bubbles from the pipe MFC with pump 51 If the product variant is an MFC with proportional valve then flush bubbles from the pipe as described in chapter Flush bubbles from the pipe MFC with proportional valve 51 If the product variant is an MFM then do the following steps Increase the fluid...

Page 51: ...r if the mass flow rate value increases The product status indicator is orange A check function event is generated Go to Actuator Actuating variable Set 50 wait for 5 seconds set 0 wait for 5 seconds Set 60 wait for 5 seconds set 0 wait for 5 seconds If the product still detects bubbles in the pipe then contact Bürkert Go to Controller Set point value source Choose Auto matic The product operates ...

Page 52: ...Make sure that the fluid can flow Make sure that the suction pressure is lower than 200 mbar during the full procedure Go to Controller Set point value source Choose Open loop control mode The product status indicator is orange A check function event is generated Go to Actuator Actuating variable Set 15 Wait for 60 seconds If the product still detects that the pipe is empty then contact Bürkert Go...

Page 53: ...onnect the product to the Bürkert Communicator software 8 4 1 Product variant büS CANopen To do the settings with the Type 8920 Bürkert Communicator software do the following steps Buy the USB büS interface set with article number 00772426 from Bürkert Refer to following figure büS stick with termination resistance switch Fig 25 USB büS interface set with article number 00772426 Download the lates...

Page 54: ... pilot of the büS stick has been com pletely installed on the PC Connect the AC DC adapter to the power supply Start the Bürkert Communicator software Click on in the Bürkert Communicator software to es tablish the communication between the Bürkert Communic ator software and the product Select büS stick Choose the port Bürkert USB büS Stick click on Finish and wait until the product symbol appears...

Page 55: ...bol appears in the list of devices In the list of devices click on the symbol related to the product the menu structure for the product is displayed A window opens 8 5 Settings specific to the product variant büS CANopen 8 5 1 Set the CANopen communication or the büS communication To set the operating mode of the digital communication do the following Connect the product to the Bürkert Communicato...

Page 56: ...n speed can be increased Do the following pro cedure In the Bürkert Communicator software select the product The product status indicator flashes Go to General settings Diagnostics Inhibit time To increase the data transmission speed click Set diagnostic mode The function Inhibit time switches to Set to default val ues The data transmission speed is increased To go back to the default data transmi...

Page 57: ...e product performs the function Analyze system 8 7 Normal operating mode MFC The normal operating mode is active when energising the product for the first time The following figure shows the normal operating mode of an MFC with pump Electronics Sensor Pump Fluid inlet Fluid outlet w Xout xd w x y x Fig 28 Function diagram of the MFC with pump wset point value of the mass flow rate x measured value...

Page 58: ...of the set point value w and the meas ured value of the flow rate depends on the product Refer to chapter Product variant büS CANopen 58 Refer to chapter Product variant Analogue 58 If the operating conditions have changed then optimise the closed loop control parameters Refer to chapter Optimise the closed loop control parameters MFC 59 To change the operating mode change the source for the set p...

Page 59: ...e product can be optim ised for the current operating conditions with a function that is called Autotune Run the Autotune function when the product is started for the first time If the operating conditions have changed then run the Autot une function If the product detects that the pipe is empty then the Autotune function cannot be started If you have an MFC with pump then fill the pipe as describ...

Page 60: ...iles Download the initiation files and the related documentation at country burkert com The setting of the parameter Set point value source is kept after a restart except when the product performs the function Analyze system The possible choices for the parameter Set point value source are product variant büS CANopen Automatic the set point value is set via the fieldbus product variant Analogue An...

Page 61: ...ocumentation of the initiation files Download the initiation files and the related documenta tion at country burkert com 9 MAINTENANCE If no heavily contaminated fluids are used and if the product is operated according to the Operating instructions then the product is maintenance free 9 1 Safety instructions DANGER Risk of injury that is due to pressure in the installation or in the product Before...

Page 62: ... and maintenance work on the product that are described in the Operating Instructions Only the manufacturer can carry out further work and calibra tion WARNING Risk of injury that is due to improper maintenance Only trained personnel can do the maintenance work Person nel must use suitable tools Secure the installation against unintentional actuation Ensure a controlled restart after maintenance 9...

Page 63: ... is only valid for an MFM with seals in metal or FFKM De energise the product Let water at a temperature of 90 C flow through the product for 30 min Let the product cool down for of 2h Commission the product 9 4 Sterilising a product variant MFM with steam The sterilisation procedure is only valid for an MFM with seals in FFKM De energise the product Let steam at a temperature of 121 C flow throug...

Page 64: ... memory or the product is de fective Contact the manufacturer because maintenance is needed 10 1 2 Product status indicator is red MFM büS CANopen Identify the cause to solve the problem Cause Solution The supply voltage is out of the error range The product can be damaged Operate the product within the specifications If the product status indicator is still red then send the product back to Bürke...

Page 65: ...ifications If the product status indicator is still red then send the product back to Bürkert Cause Solution Incorrect Autotune or Autotune aborted Make sure that the fluid flows through the product Do the Autotune again The sensor the internal memory or the product is de fective Contact the manufacturer because maintenance is needed 10 1 5 Product status indicator is red MFC büS CANopen with pump...

Page 66: ...utotune aborted Make sure that the fluid flows through the product Do the Autotune again Cause Solution büS error or CANopen bus er ror for example a short circuit Make sure that the product is correctly wired The product is connected to büS but cannot find any field bus participants Make sure that the product is correctly wired Operate the product with other fieldbus participants The product is c...

Page 67: ... Analyze system Refer to chapter Choose the source that gives the set point value MFC 60 10 1 9 Product status indicator is orange MFC Analogue Identify the cause to solve the problem Cause Solution The Autotune is in progress Wait until the Autotune is completed The operating mode of the product is set to Open loop control mode Manual set point value or Analyze system Refer to chapter Choose the ...

Page 68: ...detected bubbles in the liquid Increase the fluid pressure Do not use a fluid that is sat urated with air Observe the installation pro cedure Cause Solution Other fieldbus participants use the same node ID Assign an individual node ID to each fieldbus participant 10 1 12 Product status indicator is yellow MFC Analogue with proportional valve Identify the cause to solve the problem Cause Solution O...

Page 69: ...he product temperature the supply voltage Operate the product within the specifications If the product status indicator is still yellow then send the product back to Bürkert Cause Solution The product has detected that the pipe is empty Fill the pipe as described in chapter Fill the pipe without damaging the pump MFC with pump 52 The product has detected bubbles in the liquid Flush bubbles from th...

Page 70: ...se Solution The set point position for the actuator has almost reached 100 The set point value can not be reached Decrease the back pressure Make sure that the fluid vis cosity is in the permitted range Refer to table Oper ating fluid 24 If the pressure drop in the pipe is too high then reduce the pressure drop If the filters that are installed in the pipe are dirty then clean the filters Other fi...

Page 71: ... participants use the same node ID Assign an individual node ID to each fieldbus participant 10 1 16 Product status indicator is yellow MFC Analogue for modular actuator Identify the cause to solve the problem Cause Solution One of the following values is out of specification The sensor or the product can be dam aged the fluid temperature the product temperature the supply voltage Operate the prod...

Page 72: ...dicator is still yellow then send the product back to Bürkert The product has detected that the pipe is empty Fill the pipe completely with fluid Cause Solution The product has detected bubbles in the liquid If the connected actuator is a proportional valve then flush bubbles from the pipe as described in chapter Flush bubbles from the pipe MFC with proportional valve 51 If the connected actuator ...

Page 73: ...tatus indicator goes out periodically Identify the cause to solve the problem Cause Solution The power supply is intermit tently dropping and the product restarts Use a power supply with sufficient power output The voltage drop in the con necting cable is too high increase the cross section of the cable and reduce the cable length 10 2 4 Replacement product adopts none of the values from the defec...

Page 74: ...the cut off limit If the cut off limit is too high decrease the value of the cut off limit Refer to chapter Cut off 50 10 2 7 No mass flow rate MFC Identify the cause to solve the problem Cause Solution The product is not in the normal operating mode refer to chapter Operating modes of an MFC 56 The product is possibly running one of the functions described in chapter Choose the source that gives ...

Page 75: ... product is caused to vi brate Reduce the input pressure or contact the manufacturer 10 2 9 Unstable measured value MFC with pump Identify the cause to solve the problem Cause Solution You have not connected the functional earth FE properly To connect the functional earth use a green and yel low cable that is as short as possible And the cable cross section must be at least equal to the cross sec ...

Page 76: ...n chapter Elec trical data 29 The controller is unstable Run the Autotune function to adapt to the operating con ditions Refert to chapter Optimise the closed loop control parameters MFC 59 Cause Solution The product is caused to vi brate Run the Autotune function to adapt to the operating con ditions Refer to chapter Optimise the closed loop control parameters MFC 59 Reduce the input pressure or ...

Page 77: ...ct position of the fluid container Install the fluid container in such a way that no pressure is generated upstream the pump 10 2 13 Set point value at 0 but operating fluid still flows MFC Analogue with proportional valve Identify the cause to solve the problem Cause Solution The operating mode of the product is set to Open loop control mode and the actuator is open because the digital in put tri...

Page 78: ... gives the set point value MFC 60 Or check the operation of the digital input Refer to chapter Digital in put 42 Cause Solution The connected actuator is a proportional valve and the op erating pressure is above the tight sealing pressure of the proportional valve Reduce the operating pres sure To eliminate the defect re turn the product to the man ufacturer The connected actuator is a pump and th...

Page 79: ...es in the sensor The relay output of an Analogue product variant can be parametered to switch when there are bubbles in the sensor Flush the product fluidic parts to remove the bubbles Do the procedure that is de scribed in chapter Flush bubbles from the pipe MFC 10 2 18 Set point value is not reached MFC with pump Identify the cause to solve the problem Cause Solution The mesh filter is clogged C...

Page 80: ...o solve the problem Cause Solution The mesh filter is clogged Clean or replace the mesh filter Run the Autotune function to adapt to the operating con ditions The connected actuator is a proportional valve and the inlet pressure is too low Make sure that the pipe dia meters and the pipe lengths are adapted Refer to Pres sure loss of an MFC for modular actuator 28 The connected actuator is a propor...

Page 81: ...s solubility or outgass ing occurs due to the pressure drop across the control valve If possible reduce the liquid pressure Pressurize with a gas that has a lower solubility in the fluid Pump the unpressurized fluid 11 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...

Page 82: ... cable with M12 female con nector A coded and free cable end 5 m 560365 Connection cable with M12 female con nector A coded and free cable end 10 m 563108 Memory card On request Tab 68 Electrical accessories product variant Analogue For further accessories refer to the product data sheet Cable assemblies can be made on request Item Article number Bent 8 pin M12 male connector 775070 Tab 69 Accesso...

Page 83: ...he product away from any highly flammable materials or fluids CAUTION Risk of injury from dangerous fluids Contact with the operating fluid its reaction products and va pours can cause injuries Inhaled vapours can be harmful Before you disconnect pipes or valves flush out dangerous fluids release pressure in the pipes and drain Observe all applicable accident protection and all applicable safety r...

Page 84: ...s product external filters and in stallation equipment Protect the electrical interfaces with protective plugs Clean and vent contaminated products Close the fluid connections with protective caps Protective caps ensure protection and sealing Pack the product in two suitable zip lock bags to avoid any contamination during the transport Transport the product in an impact resistant package protec te...

Page 85: ... or tests will be carried out on the product until a valid Contamination Declaration has been received To return a used product a return number is required To return a used product to Bürkert contact your Bürkert sales office 13 4 Disposal ATTENTION Environmental damage that is due to parts contaminated by fluids Dispose of the product and its packaging in an environment ally friendly manner Compl...

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Burkert 8756, Operating Instructions Manual

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Summary of Contents for 8756

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