User Manual Digital load cells Hardware and Functions
Contents
1. 80 3 H 40 0 05 180 10 200 02 220 02 Fig 5 Dimensions FIT 1 FIT Model FIT 1 13 2xM6 Festigkeitsklasse 10 9 Anzugsmoment 14Nm 2xM6 strength class 10 9 tighten torque 14Nm Belastungsrichtung Mitte Plattform loading direction center of mounting plate Plattform mounting plate s F de 1 1 El lt GT I sl EI edilen FIT 1 Basisplatte base plate p fohl E h 4xM8 Festigkeitsklasse 10 9 ee nn det rr Verbindungsfl che 4xM8 strength class 10 9 recommended flatness 0 1mm tighten torque 25Nm at mounting area Fig 6 Installation FIT 1 Installation instructions see Fig 6 The load cell is fastened in place with 4 M8 screws the strength class 10 9 with a torque of 25 Nm is recommended The flatness of the installation surface must be better than 0 1 mm to avoid tension in the base plate Tension in the base plate can affect the function of the overload protection and cause measurement errors The weighing platform is fixed by means of two reamed holes 26 H7 8 mm deep and two threaded M6 holes 7 mm deep the strength class 10 9 and a torque of 14 Nm is recom mended FIT RER 14 Model FIT 1 It is recommended that the lo2. kk nn cnn anne n kK KAKA rra nr kK kK A A A A 32 FIT HBM 2 Content 6 Electrical Connection u de 33 6 1 FIT wiring di 33 Eelere Ee E 39 63 EE HEET ee DD DD Eeer A0 6 3 1 RS232 RS485 4 wire interfaces ART 40 6 3 2 CANOpen interface a KAKA KK kk KK A A AA 42 6 3 3 DeviceNet interf tea u 2 nn ee He a ri ik 43 6 3 4 Diagnostic channel RS485 2 Wire kk kk kk kk rca rra 44 64 Inputs and oulputs arrsa 45 6 4 1 Electrical data Of Input 45 6 452 Data Of Outputs TEE 46 Ile O FEHETRREHEPEDERERERERETETETEREREBEREFEREUEPETERFREFRREREIEFETEIETERSFENEN 48 HBM FIT Typographical conventions 3 Typographical conventions A Ce X Italics File gt Open Start MSV For clear identification and improved legibility the following conventions have been used in this documentation Important paragraphs are marked with a symbol to draw attention to them CE Designation Statutory marking requirements for waste disposal Points out external documents and files All menus and menu commands appear in quotes here the File menu and the Open sub menu Quotes and italics are used for buttons input fields and user input All commands are set out in a bold font face or as a link to the command description Important information FIT The device must not be modified from the design or safety engineering point of view
3. gelb yellow grau OUT 4 grey schwarz OUT 3 black gr n OUT 2 green blau blue OUT weiss GND 2 white rot UB 2 red Kabel cable 8x0 25 mm 2x2 4 3 m 6 m 12 m lang long g7 mm optional 2 Kabel f r Steuerfunktionen optional 2 cable for control functions Fig 16 Wiring assignment FIT 1 HBM 36 HBM FIT wiring assignment RS232 RS485 CANOpen Kabel 1 DeviceNet cable 1 praun Diag Rb Tb Diag Rb Tb Diag Rb Tb Schirm gelb Diag Ra Ta Diag Ra Ta Diag Ra Ta screen 4 d yellow oder Trigger oder Trigger oder Trigger Z drey RB CanL in Se TB CanL out gr n RxD RA CanH in green a TxD TA CanH out weiss GND1 GND1 GND1 white rot UB1 UB1 UB1 red Kabel cable 8x0 25 mm 2x2 4 3 m 6 m 12 m langllong g7 mm optional 2 Kabel f r Steuerfunktionen optional 2 cable for control functions braun IN2 brown gelb IM yellow a gau OUT4 f grey _ schwarz oun Se black gr n ouT2 green Schirm blau OUTI screen blue weiss GND2 white Kabel cable 2 opt rot UB2 red Fig 17 Wiring assignment FIT 4 FIT FIT wiring assignment FIT 37 PIN Nr RS232 RS485 CANOpen DeviceNet 8 Diag Rb
4. FIT A 22 Model FIT 5 4 4 Model FIT 5 The model FIT 5 is hermetically sealed and composed of stainless steel Fig 11 This model comes with integrated overload stops in vertical direction The output is implemented through the base by two one female plugs 8 pins The protection class is IP 68 The protection class of the associated cables connectors is IP 69K 79 0 1 9 0 4 0 1 170 0 2 15 BE A Fig 11 Dimensions FIT 5 HBM FIT Model FIT 5 FIT 23 Belastungsrichtung Mitte Plattform m 2 x M6 Festigkeitsklasse 10 9 loading direction Anzugsmoment 10 Nm center of mounting plate strength class 10 9 Plattform tighten torque 10 Nm mounting plate Zwischenst ck Spacer empfohlene Ebenheit der Basisplatte 0 02 mm an der Verbindungsfl che recommended flatness 0 02 mm at mounting area Alternative Lasteinleitung alternative load introduction Basisplatte base plate 2 x M6 Festigkeitsklasse 10 9 Anzugsmoment 10 Nm empfohlene Ebenheit der strength class 10 9 Basisplatte 0 02 mm tighten torque 10 Nm an der Verbindungsflache recommended flatness 0 02 mm at mounting area
5. Fig 14 Signal flow plan After amplification and A D conversion the signal is filtered by adjustable digital filters The commands ASF FMD are used to set the cutoff frequency of the digital filters The command ICR is used to change the output rate measured values per second The user can set their own curve commands LDW LWT NOV without changing the factory calibration Gross net selection is also available command TAS Command ZSE activates an automatic zero function on start up There is also an automatic zero tracking function ZTR FIT Trigger function 27 Command LIC is available for linearization of the scale characteristic curve with a third or der polynomial The polynomial parameters can be set using the HBM PC program AED Panel 32 The current measured value is read out using the command MSV The format of the meas ured value ASCII or binary is set with the command COF You can also use command COF to select automatic data output Five types of digital filter are implemented in the FIT and these are selected using the FMD command With FMDO filters are also available below the 1 Hz cut off frequency In filter mode FMD1 fast settling filters with high damping in the stop band are activated Detailed information can be found in the help file AED_help_e Description of the basic commands 5 2 1 Trigger function The FIT includes four trigger functions to support measurements in packing machi
6. 4 Cable output facing down 17 2xM6 Festigkeitsklasse 10 9 Anzugsmoment 14 Nm 2xM6 strength class 10 9 tighten torque 14 Nm Belastungsrichtung Mitte Plattform loading direction center of mounting plate Plattform mountinOg plate FIT 4 empfohlene Ebenheit der Platte 0 1 mm an der Verbindungsfl che recommended flatness 0 1 mm at mounting area Basisplatte base plate 4xM6 Festigkeitsklasse 10 9 Anzugsmoment 14 Nm 4xM6 strength class 10 9 tighten torque 14 Nm Fig 8 Installation FIT 4 Installation instructions see Fig 8 The load cell is fastened in place with 4 M6 screws the strength class 10 9 with a torque of 14 Nm is recommended The flatness of the installation surface must be better than 0 1 mm to avoid tension in the base plate Tension in the base plate can affect the function of the overload protection and cause measurement errors The weighing platform is fixed by means of two reamed holes 26 H7 8 mm deep and two threaded M6 holes 7 mm deep the strength class 10 9 and a torque of 14 Nm is recom mended FIT jA HBM Model FIT 4 Cable output facing down It is recommended that the load unit is mounted in the centre of the platform to minimise cor ner load errors and torques The following must be noted when installing several FIT Te in a system with a bus system The printed production number rating plate is required for setting up the data communica tio
7. GND1 is required to operate the measurement electronics and serial communication Voltage source requirements The supply voltage must be sufficiently filtered effective value minus residual ripple gt 6 V The FIT electronics has a low loss regulator that consumes 2 W during operation The power consumption is therefore dependent on the level of the supply voltage 2W Current consumption A Voltage V When switched on the electronics briefly consume a current of approx 0 2 A To ensure a safe start up the supply must be able to provide this current without a clipping being trig gered This must be complied with in particular when supplying several FIT load cells from one power supply unit The sustained loading is in contrast calculated from the equation shown above Connection to a wide ranging supply network is not permitted as this often causes interfering voltage peaks to be coupled into the transducer Instead a local supply must be provided for the FIT load cells even when grouped The supply voltage UB1 GND1 must be insulated from the shield potential A connection from GND1 to the enclosure is not necessary however the potential difference may only be maximum 30 V The supply ground connector GND1 is also used as the reference potential for the interface signals and the Trigger input in cable 1 In layouts with several transducers the supply can be laid together with the RS485 bus lines in a 6 pin cabl
8. In the type name the symbol b characterises the actual version The diagnostic bus as a second communication channel is only available in the version ex tended E version In this case the digital input 1 is located in the cable 2 Interfaces All models and versions can be optionally equipped with one of the following serial inter faces e RS232 e RS485 4 wire e CANOpen e DeviceNet In the type name the symbol c characterises the actual version The diagnostic bus as a second communication channel is only available in the version ex tended E version In this case the digital input 1 is located in the cable 2 Details about the electrical connection of the interfaces can be found in Section 6 of these operating instructions HBM 4 1 HBM Mechanical construction Mechanical construction Model FIT 1 The load cell in the model FIT 1 is fully protected by a laser welded stainless steel enclo sure Fig 5 the seal between the load application part 1 and enclosure is ensured by a silicone membrane The pressure compensation between the interior of the load cell and en vironment which is necessary for function is implemented via venting channels under the load application part The load cell is designed for degree of protection IP55 56 0 2 105 69 M6 9 7 mm tief deep
9. Screen Housing Earth ground Fig 22 Connection of a FIT to the power supply and computer via RS232 The wiring of the RS485 is implemented in a similar way with the lines Ra Rb Ta Tb GND1 and UB1 FIT HBM 42 6 3 2 HBM CANOpen interface CANOpen interface The interface is set up using the CANOpen standard CiA DS301 RS485 bus 2 wire Bus Bus termination termination Master PC PLC AED FIT AED FIT Fig 23 Connection of a FIT to the Can bus Bit rate and length of the bus cable For the CANOpen bus the length of the cable depends on the bit rate Bit rate kbit s 10 20 50 125 250 500 800 1000 Max length of cable m 5000 2500 1000 500 250 100 50 25 The maximum cable length is the sum of the lengths of all branch lines per node bus mem ber and the lengths of the cable between the nodes The length of the branch lines per node is limited and depends on the used bit rate see additional documentation CAN Bus CiA DS102 V2 0 Setting of the address The address is set via the bus CAN bus 0 127 default at delivery 63 Setting of the Bit rate The bit rate is set via the bus using the field bus configuration tool default at delivery 125 kbit s Explanations for CANOpen communication can be found in the help file AED_help_e FIT DeviceNet interface 43 6 3 3 DeviceNet interface The interface is
10. designed to the DeviceNet specification Release 2 0 ODVA CAN bus 2 wire Bus Bus termination termination CAN_L Master PC PLC AED FIT AED FIT Fig 24 Connection of a FIT to the DeviceNet bus CAN bus Bit rate and length of the bus cable For the DeviceNet Bus the length of the cable depends on the bit rate Bit rate kbit s 125 250 500 Max length of cable m 500 250 100 The maximum cable length is the sum of the lengths of all branch lines per node bus mem ber and the lengths of the cable between the nodes The length of the branch lines per node is limited and depends on the used bit rate see additional documentation DeviceNet De viceNet specification Volume 1 Appendix B cable profiles Setting of the address The address is set via the bus DeviceNet 0 63 default at delivery 63 Setting of the Bit rate The bit rate is set via the bus using the field bus configuration tool default at delivery 125 kbit s Explanations for DeviceNet communication can be found in the help file AED_help_e FIT HBM 44 6 3 4 HBM Diagnostic channel RS485 2 wire Diagnostic channel RS485 2 wire RS485 bus 2 wire Bus Bus termination termination Master PC PLC AED FIT AED FIT Fig 25 Bus structure for diagnostic channel RS485 2 wire The diagnostic bus is only available in the version extended version E The diagnostic channel
11. except with our express agreement Any modification shall exclude all liability on our part for any damage resulting there from Repair is specifically forbidden Repairs must only be carried out by HBM All the factory defaults are stored at the factory where they are safe from power failure and cannot be deleted or overwritten They can be reset at any time by using the command TDDO The production number set at the factory must not be changed HBM 4 Safety information Safety information e FIT load cells are exclusively designed for weighing technology measurement tasks and directly associated control and regulatory tasks Use for any purpose other than the above shall be deemed to be inappropriate e Each time before starting up the modules you must first run a project planning and risk analysis that takes into account all the safety aspects of automation technology This par ticularly concerns personal and machine protection e There are not normally any hazards associated with this product provided the notes and instructions for project planning assembly appropriate operation and maintenance are observed e It is essential to comply with the safety and accident prevention regulations specific to the particular application e Installation and start up must only be carried out by suitably qualified personnel e During installation and when connecting the cables take action to prevent electrostatic discharge as this m
12. An hermetically sealed model of the FIT Fig 4 is available in laser welded stainless steel enclosure with plug connectors Alternatively there is a model without stainless steel enclosures but with full FIT functional ity Fig 2 with the type name FIT Obcde xxKG It is characterised by an aluminium measuring body with integrated electronics and plug connectors This model is space saving and cost effective at degree of protection IP 67 if greater corrosion resistance is not required FIT load cells are produced for max capacities 5 to 75 kg FIT 5 load cells only for 5 kg 10 kg 20 kg capacities In the type name the symbol a characterises the actual model xx the max capacity in kg FIT oe 10 Models Fig 3 FIT load cell FIT Abcde xxKG Fig 4 FIT load cell FIT 5bcde xxKG HBM FIT Versions 3 3 3 4 FIT 11 Versions FIT load cells are available in two versions e Standard version S e Extended version E The standard version S with just one connection cable or connector comes with all func tions necessary for dynamic weighing including the external trigger function In the Extended version E the FIT has two connection cables The second cable or sec ond connector contains the connections for the digital inputs and outputs 2 inputs 4 out puts These I O can be used to output four limit value states or to automatically control the FIT filling and dosing processes
13. RANA Fig 12 Installation FIT 5 Installation instructions see Fig 12 The load cell is fastened in place with 2 M6 screws the strength class 10 9 with a torque of 10 Nm is recommended The length of the mounting area measured from the rearward rim of the FIT 5 must not exceed 70 5 mm The weighing platform is fixed by means of two threaded M6 holes the strength class 10 9 and a torque of 10 Nm is recommended The platform can be fixed alternatively at the top side or at face side of the transducer When the platform is mounted on the top side the length of the mounting area must not exceed 30 5 mm measured from the face side The following must be noted when installing several FIT s in a system with a bus system The printed production number rating plate is required for setting up the data communica tion If the rating plate can no longer be seen after installation the numbers of all FIT should be noted beforehand This enables address assignment during the initial start up Alternatively before connection to the bus line each FIT can be individually connected to a PC in order to set different addresses see ADR command help file AED_help_e Descrip tion of the basic commands HBM 24 Electrical configuration The following precautionary measures must be complied with during mounting and opera tion e The depth of the M6 threaded holes is 12 mm Please note this dimension when selecting the fasten
14. Tb Diag Rb Tb Diag Rb Tb 7 Diag Ra Ta Diag Ra Ta Diag Ra Ta oder Trigger oder Trigger oder Trigger 4 RB CanL in 3 TB CanL out 2 RxD RA CanH in 1 TxD TA CanH out 6 GND1 GND1 GND1 5 UB1 UB1 UB1 optional 2 Stecker f r Steuerfunktionen optional 2 cable for control functions PIN Nr I IN2 7 N 4 OUT4 3 OUT3 2 OUT2 1 OUTI e TET 5 UB2 Verwendete Stecker Fa Binder Rundsteckverbinder Serie 423 8 pol DIN 09 0173 90 08 used plugs Binder circular connector series 423 8 pins 09 0173 90 08 Fig 18 Wiring assignment FIT 0 HBM 38 FIT wiring assignment PIN Nr RS232 RS485 CANOpen DeviceNet 7 TxD TA CANH out 3 RxD RA CANH in 6 _ TB CANL out 5 RB CANL in 8 UB1 UB1 UB1 1 GND1 GND1 GND1 Diag Ra Ta Diag Ra Ta Diag Ra Ta 4 oder Trigger oder Trigger oder Trigger 2 Diag Rb Tb Diag Rb Tb Diag Rb Tb Dr y gt j d A Pa PIN Nr A 7 OUT1 po y 3 OUT2 pod Verwendete Kupplung Fa Lumberg 6 OUT N om gt Einbaukupplung PRKFM 8 polig 5 OUT4 u pes i used female plugs Lumberg H j PRKFM 8 pins 8 IIe 1 GND2 4 IN2 2 IN2 Fig 19 Wiring assignment FIT 5 HBM FIT Supply voltage 6 2 FIT 39 Supply voltage Regulated DC voltage of 10 30 V on cable 1 line UB1
15. The following must be noted when installing several FIT s in a system with a bus system e The printed production number rating plate is required for setting up the data communi cation If the rating plate can no longer be seen after installation the numbers of all FIT should be noted beforehand This enables address assignment during the initial start up e Alternatively before connection to the bus line each FIT can be individually connected to a PC in order to set different addresses see ADR command help file AED_help_e Description of the basic commands The following precautionary measures must be complied with during mounting and opera tion e The gap between the base plate and load cell can only function as an overload protection if itis kept clean Contamination of this gap can also cause force shunts which can lead to measurement errors If there is danger of contamination it is recommended that overload protection is provided in another manner e g punctiform with adjusting screws e The length of the fastening screws must be selected so that the maximum screw in length of 7 mm is not exceeded Non compliance can cause damage to the load cell e An effective overload protection can be achieved with the FIT 0 load cell if the installa tion instructions are complied with Please note the permissible maximum values for ec centric loads and take into account overloads from knocks e Avoid force shunts during setup
16. User Manual FIT Digital load cells Hardware and Functions I D lt 11696 3 0 en HBM Content 1 Content Typographical conventions U dio 3 Important information 3 Safety IMOLMAUOM een 4 WK AE 5 2 Special features ad sumi 6 3 Models versions interfaces u u 8 3 1 Overview of FIT aia 8 O its 9 BiB NEISIONSs Auen anmerken 11 EI a EE EE EEE e 11 4 Mechanical construction evgsexeueueukEueENEEEe SKS cnn aan nn anne nano 12 Al eee et 12 4 2 Model FIT 4 Cable output facing down uuauaeaeaeeeennnnnnnenenenennnnnnnnnnenennnnnnnannnnnnnnnnnnnnnenenenennnnnnnnnnnnnnn 15 4 33 E AA A ae ae 19 44 E ee ee een 22 5 Electrical CONTIgUratiON ET 24 SA FUEIO AA _ 2 e 25 9 2 Signal PROCESSING iian Shan a Sut aS Sumu i R K R e da Qua ama Shea S N n vi S s y 26 52 1 vele T COT rennen o iu astin 27 bt Limit valbe welles yulli iii ee 28 5 2 35 Extreme valie SUNCU Ninanina aana m Q w au ua aa Ai en rd 28 5 2 4 Dosing and filling Control s3 is klr s us Tun la sila kin X N KET Y D E SETEM ba D TA Y NA w DL N Sand n wa kutu qis 28 5 2 5 Diagnostic Tee EE 29 O MOS oa 29 5 2 7 NO 31 5 2 8 Dosing control E version only
17. a the serial interface All the parameters can be stored power fail safe in the EEPROM The FIT load cells are calibrated in the factory with zero load and max capacity The elec tronics determine a default characteristic curve from these measured values and use this characteristic curve to display the subsequent measured values Depending on the output format COF the following measured values are returned Output format Meas values Meas values for NOV 0 for NOV gt 0 Binary 2 chars 0 Max capacity 0 20000 Digit 0 NOV integer Binary 4 chars 0 Max capacity 0 5120000 Digit 0 NOV long integer ASCII 0 Max capacity 0 1000000 Digit 0 NOV Delivery condition HBM 26 5 2 HBM Signal processing The two parameters LDW and LWT give you the opportunity to adapt the curve to meet your requirements scale curve and you can use the NOV command to standardize the meas ured values to the required scaling value e g 3000 d Detailed information can be found in help file AED_help_e Description of the basic commands Signal processing NOV RSN FMD SZA LDW Gross ASF ICR SFA LWT LIC measured value Amplifier TAV TAS Measuring Sampling Factory User Lineari bridge Filter rate calibration defined zation Net Net scaling measured ADC value MIN Extreme MAX values Coarse flow IMD Dosing control NVTq Trigger Fine flow 2 Tare Dee Gen BE value Se
18. ad unit is mounted in the centre of the platform to minimise cor ner load errors and torques The following must be noted when installing several FIT s in a system with a bus system The printed production number rating plate is required for setting up the data communica tion If the rating plate can no longer be seen after installation the numbers of all FIT should be noted beforehand This enables address assignment during the initial start up Alternatively before connection to the bus line each FIT can be individually connected to a PC in order to set different addresses see ADR command help file AED_help_e Descrip tion of the basic commands The following precautionary measures must be complied with during mounting and opera tion e The fastening screws of the load application part must never be undone e The silicone membrane lies mechanically protected under the load application part The gap between enclosure and load application part must in no circumstances be cleaned with sharp objects or high pressure cleaners e During cleaning the load application part and the gap to the enclosure must not be com pletely submerged in water as under unfavourable circumstances water can penetrate into the interior of the load cell via the venting holes e The depth of the M6 threaded holes is 7 mm Please note this dimension when selecting the fastening screws FIT load cells have effective overload protection in
19. ay damage the electronics e The required power supply is an extra low voltage 10 30 V with safe disconnection from the mains When connecting additional devices comply with the safety requirements e Shielded cables must be used for all connections The screen must be connected exten sively to ground on both sides e The CE mark enables the manufacturer to guarantee that the product complies with the requirements of the relevant EC directives the declaration of conformity is available at http www hbm com HBMdoc e In accordance with national and local environmental protection and material recovery and recycling regulations old devices that can no longer be used must be disposed of sepa rately and not with normal household garbage If you need more information about waste disposal please contact your local authorities or the dealer from whom you purchased the product Safety requirements for electrical equipment for measurement control and laboratory use HBM FIT Use FIT Use The FIT load cells belong to the digital load cells and measurement chain family specially developed by HBM for rapid dynamic weighing processes They acquire measurement sig nals from strain gages process them digitally output them and can network them for buses on request The load cells deliver a completely filtered scaled and digitalized output signal to a direct connection in bus systems or PC s They operate with sampling ra
20. bouncing is dependent on the function set IMD command but not on the input used ca ble 1 or cable 2 FIT A 46 6 4 2 HBM Data of outputs The differences between the various inputs must be noted for the electrical data Trigger input cable 1 Inputs IN1 IN2 Reference potential GND1 GND2 Low level 0 1 V 0 6 V High level 3 12 V 10 30 V Input resistance 10 kO gt 3 kO Data of outputs The output driver of the FIT switch outputs is a PLC compatible High Side driver static switch The circuit is galvanically isolated from the FIT measurement electronics and must be supplied by the external operating voltage UB2 When an output is activated a positive level is given on the corresponding output line voltage is dependent on UB2 The consumer must be connected between the output and the minus pole of the power supply GND2 The outputs are not set to specific consumers lamps relays FIT Data of outputs 47 auxiliary equipment supply D D D o D ot 3 2 e et oe E o an D meas electronic supply Fig 26 Example for output configuration When using the outputs the GND2 connection must also be connected A connection from GND2 with GND1 is not necessary The potential difference between both wires is maximum 30 V All four outputs have the same electrical properties and can switch ohmic or inductive loads relays valves up to the per
21. ce decanted cathe hal 13 installation m aT 17 Tales tel EM ela NR S N y NN AAAS ER 23 L RANAS E sn ae no A A A A O AAA 28 M mode Of ACCESS Pe 29 modes lla o N N EAR O O AO AI O O OO OO 29 O order number EE 8 overviewot IR LTE 8 R EE aaa ER 40 HBM FIT en 50 Index S signal flow plan FIT conan KK kk k kr kk A kk kk kk A kk A kk EEEE ka kk eee 26 fiel Ke Ee EE 39 T lee Eeer ii a n A XERA VAKE XA sa LARA SARE NAE n YE ka a AM AD A ences A ERKA SARI ARA SEWA XAR RRA DA SE A ANNE SANA XANA AR SANA SARA VAN n AAA he 27 W wiring assignment FEIT 37 wiring assignment FEIT 35 wiring assignment A TA a nella T w ba L la K a a wek aa EA 36 wirng assignment RRE 38 HBM FIT HBM FIT en HBM FIT HBM FIT en Modifications reserved All details describe our products in general form only They are not to be understood as express warranty and do not constitute any liability whatsoever 11696 3 0 en Hottinger Baldwin Messtechnik GmbH Postfach 100151 D 64201 Darmstadt Im Tiefen See 45 D 64293 Darmstadt Tel 49 6151 803 0 Fax 49 6151 8039100 E mail support hbm com www hbm com HBM measurement with confidence
22. e e g with HMB junction boxes VKK1 4 or VKK206 Ensure that there is suf ficient wire cross section provided as some cable sections will conduct the supply current for all connected FIT load cells HBM 40 6 3 6 3 1 HBM Serial interface Serial interface RS232 RS485 4 wire interfaces UART The FIT load cells are delivered as required either with an RS232 or RS485 4 wire inter face Baud rates of 1200 115200 bit s can be set for both interfaces The ground reference for all interface signals is based on the power supply ground of the FIT load cell GND1 The RS232 interface is only suitable for a point to point connection one FIT load cell per interface Only the signals RxD Receive Data TxD Transmit Data and GND1 are re quired TxD TxD For communication with an external device RxD RxD the TxD line must be connected with the RxD of GND GND the FIT and vice versa Fig 20 Schematic connection of RS232 interface Multi channel measurements are possible with a bus layout using FIT load cells with the RS485 interface All transducers on a line are switched in parallel and are differentiated us ing software to assign different addresses When the control computer has an RS232 inter face then an interface converter is required e g HBM SC232 422B The correct assign ment of transmission and reception lines can be seen in Fig 21 Bus line Ra to Ta of the converter etc The converter already i
23. e made to use the trigger function IMD TRC commands This also applies to the input in cable 1 e The inputs Trigger and In1 differ in their electrical properties galvanical isolation ref erence potential and input level Details regarding the various input levels can be found in the Technical Data section 7 5 2 7 Outputs E version only The Out 1 and Out 2 outputs of the FIT load cell can be used either as limit value outputs LIV command or as digital outputs that can be set with the command POR The OUT 3 and OUT 4 outputs can be activated as limit values 3 and 4 Limit value switch The output is controlled by the limit value function when the output is activated as a switch ing signal with the LIV command see help file AED Hie ei Output via POR An output not used as a limit value switch can be switched on or off with the POR command In this manner process functions can be triggered by the control software without installing additional lines and I O modules Notes e The selection of the function is implemented individually for each output by the assigned LIV command e The limit value functions are blocked when IMD2 is set see section 5 2 8 Dosing control E version only FIT E 32 Dosing control E version only Function of switch outputs where IMD 0 or IMD 1 Outputs Limit values LIV switched off Limit values LIV switched on OUT1 Settings via POR Setti
24. enclosures have one or two permanently fixed cables Suitable cables are available from HBM in various lengths for the plug connectors of the HO H5 model versions however they can also be supplied by the user The diagrams are also suitable for the wiring of these ca bles Notes regarding cable connection The enclosure of the FIT load cell is connected to the shield of both cables 1 cable with S version To obtain EMC compliant connection EMC electromagnetic compatibility the shield at the cable end must be connected to the enclosure of the connected device or the earth potential The shield must be connected directly and with low impedance e g with EMC compliant PG feed throughs HBM 34 HBM FIT wiring assignment Use shielded low capacitance cables only for all connections interfaces supply and auxil iary equipment the HBM measurement cables fulfil these requirements Electrical and magnetic fields often induce interference voltages in the measurement elec tronics Do not route the measurement cables parallel to power lines and control circuits If this is not possible protect the measurement cable with steel conduit for example Avoid stray fields from transformers motors and contact switches The S version comes without the diagnosis channel but the diagnosis function can be used via the communication interface The FIT can be operated with a supply voltage of up to 30 V Incorrect connections betwee
25. g function is activated using the command IMD2 In this case the setting of the limit value function as well as the trigger function is of no sig nificance for the digital inputs outputs Detailed information regarding the dosing function can be found in the help file AED_help_e Description if the commands for the filling and dosing applications FIT Diagnostic function 5 2 5 5 2 6 FIT 29 Diagnostic function A diagnostic function has been built into the FIT to monitor dynamic measurement This function includes a memory for 512 binary measured values and associated status informa tion Different recording modes are available so that the processes can be analysed without interrupting measurement The advantage of this diagnostic function is that the measured values are stored in real time without loss of data and then read out slowly OFF line This means that it is possible to access this real time data even at low communication rates The diagnostic function can be accessed in two modes Via the main communication channel of the FIT UART with RS232 RS485 CAN bus or DeviceNet e Via a second communication channel 2 wire RS485 E version only The diagnostic function is described in the help file AED_help_e Diagnostic commands Digital inputs outputs Inputs The S version of the FIT electronics has a digital input in cable 1 Two galvanically isolated inputs are included in cable 2 with
26. ing screws e FIT load cells have effective overload protection in the tensile and compressive direc tions Please note the permissible maximum values for eccentric loads and take into ac count overloads from knocks e Avoid force shunts due to setup 5 Electrical configuration The electronics of the digital FIT load cell basically comprises the following function groups e Single point load cell e Amplifier e Analog digital converter A D e Evaluating unit uP e Power fail safe parameter storage EEPROM e Serial interface e Galvanically isolated power supply e Galvanically isolated control inputs and outputs E version HBM FIT Function 5 1 FIT 25 Galvanic Isolation Voltage Voltage Power Supply regulator regulator Ni UB1 y gt Interface lt pp Interface 25 CH vi gt A P SS Z D H gt Trigger _ Trigger EEPROM E IE j lagnostlc Lal y Diagnostic channel Linearisation Wei l SEN E Egger sun Measuring rate Sensitivity j 4 Zero set Re j i Digital UO OUT l FIT E version only i Fig 13 Block diagram The analog transducer signal is first amplified then filtered and converted to a digital value in the analog digital converter The digitised signal is processed in the microprocessor and for warded vi
27. lation instructions see Fig 10 The FIT 0 load cell must be mounted on a clean surface with a flatness of lt 0 1 mm The flatness of lt 0 1 mm is a prerequisite for the correct function of the overload protection in the compressive direction If overload protection in the tensile direction is required a suitable overload stop can be mounted in the front groove provided for this purpose customer side construction The gap between the overload stop and groove is 0 1 mm The load application part is mounted with 4 M6 screws the strength class 10 9 with a torque of 14 Nm is recommended The flatness of the connection surface must be lt 0 1 mm The load application part should only touch the load cell on this connection surface in order to achieve optimal measuring properties FIT Model FIT 0 21 The load application part must be produced by the customer and can be mounted above or below This allows an alternative load application through the base plate 4 threaded holes are available to mount the FIT 0 on the base plate the strength class 10 9 with a torque of 10 Nm is recommended Please note the maximum thread depth of 7 mm as screws with a greater screw in length can damage the load cell It is also recommended with the FIT 0 load cell that the load application part is mounted in the centre of the platform to minimise corner load errors and torques Suitable connection cables are available from HBM see data sheet
28. missible maximum current Fig 26 shows examples of various consumers A free wheeling diode must be switched in parallel for inductive loads FIT RER 48 Index Index A address CGANODO DEE EE Inne 42 Docencia 43 10 1216 RIO KL cto 44 B baud rate diagn sis tac 44 bit rate E ele EE 42 Pe p GL yt y OO O ke e De DD N N anna amu E OO ANN 43 leie CAG aN RE 25 C cable length CANO Pratt i Mi MEM MEME ME Z uA A ks A VA a A Ma 42 DEVIEEN EEN 43 AD e Sana nane SNN ta Dd ds Er 42 D data or AI ere IC 47 DeviceNet interface t u S ss S sS sp Duss sS asada See 43 diagnostic channel BS485 u u au k anna eh 44 diagnostic 011101110 cia 29 ele Beie EC 29 digital outputs ONM Ce e EE 31 dimensions EMOS 19 dimension S tr HE EE 12 CIMENSIONS pip tau AM MEREN AN SEREN NN n DD De NER e r idas 16 dimensions HR u ls Si iS ll lili i iii ili i lili Sl l Sl ili k e 22 QOSIri ang FNI Eent EE 28 HBM FIT Index 49 E electrical data of digtal inputs nn 46 extreme value function i a e a a nano e E a a H EH HHHH HE H EEEnEnEEEnE Eu nEHHEHnEEEEHIKNw 28 F FIT model 0 PIODCMICS tatiana 7 FIT model 1 and 4 DEODONI eech 7 FIT model 5 oae gi si n gt ERDEN NNN AN Di NNN AN E C es EEE Deren 7 FIT variants PICTUS cs 10 I UO dosing control CE VETSIOMS OMY NEE 32 InStallavion mi li OAs ttt cede tlie KDE ad o dende en ee EE 20 installation Ei A add tetris nen cen tad cet aa
29. n If the rating plate can no longer be seen after installation the numbers of all FIT should be noted beforehand This enables address assignment during the initial start up Alternatively before connection to the bus line each FIT can be individually connected to a PC in order to set different addresses see ADR command help file AED_help_e Descrip tion of the basic commands The following precautionary measures must be complied with during mounting and opera tion e The fastening screws of the load application part must never be undone e The silicone membrane lies mechanically protected under the load application part The gap between enclosure and load application part must in no circumstances be cleaned with sharp objects or high pressure cleaners e The depth of the M6 threaded holes is 7 mm Please note this dimension when selecting the fastening screws FIT load cells have effective overload protection in the tensile and compressive direc tions Please note the permissible maximum values for eccentric loads and take into ac count overloads from knocks e Avoid force shunts during setup FIT Model FIT 0 19 4 3 Model FIT 0 The digital FIT 0 load cells are characterised by a compact aluminium measuring body and plug connectors The electronics are directly integrated in the measuring body Fig 9 The load cell is space saving and cost effective especially where great corrosion resistance is not
30. n the supply and interface lines can cause irreversible damage Check the correct assignment of the connections carefully before switching on the first time Ensure that cables 1 and 2 are not incorrectly connected Any HBM guarantee is rendered invalid for damage caused by incorrect connections The ground of the interface driver is related to the GND1 terminal cable 1 The inter face driver of the master should be also connected to this GND1 Only a connecting cable with a screen grounded on two sides should be used as the interconnecting cable between the FIT and the master The shield of the FIT cable is connected to the housing of the FIT The diagnostic bus as a second communication channel is only available in the ver sion extended E version In this case the digital input 1 is located in the cable 2 FIT FIT FIT wiring assignment 35 Kabel 1 cable 1 Schirm screen ta Schirm screen Kabel cable 2 opt i RS232 RS485 CANOpen DeviceNet braun Diag Rb Tb Diag Rb Tb Diag Rb Tb brown gelb Diag Ra Ta Diag Ra Ta Diag Ra Ta x yellow oder Trigger Oder Trigger oder Trigger grau RB CanL in grey schwarz TB CanL out black gr n RxD RA CanH in green blau TxD TA CanH out blue weiss GND 1 GND 1 GND 1 white rot UB1 UB1 UB1 red braun brown
31. ncludes bus termination resistors Another bus termi nation must be installed on the load cell furthest away 500 Q Fig 21 The following must be noted when installing several FIT s in a system with an RS485 bus system The printed production number rating plate is required for setting up the data communica tion If the rating plate can no longer be seen after installation the numbers of all FIT should be noted beforehand This enables address assignment during the initial start up Alternatively before connection to the RS485 line each FIT can be individually connected to a PC in order to set different addresses see ADR command in the help file AED_help_e Description of the basic commands The ground of the interface driver is related to the GND1 terminal cable 1 The interface driver of the master should be also connected to this GND1 Only a connecting cable with a screen grounded on two sides should be used as the inter connecting cable between the FIT and the master The shield of the FIT cable is con nected to the housing of the FIT FIT RS232 RS485 4 wire interfaces UART 41 Line termination 4 wire physical circuit Line termination Fig 21 Connection of several FIT load cells to a computer via one RS485 bus 4 wire Fig 22 shows the necessary connections on cable 1 RS232 version for connection to a computer Housing Power Earth O Sub D9 Pol
32. nes and checkweighers e Internal pre triggering via an adjustable level e External triggering via a digital trigger input pre trigger e Internal post triggering via an adjustable level e External triggering via a digital trigger input post trigger Gross or net measured values can be used for triggering TAS The trigger function is described in the help file AED_help_e chapter Description of the commands for signal processing FIT HBM 28 9 2 2 5 2 3 9 2 4 HBM Limit value switches Limit value switches The FIT includes four limit values which can be set by the command LIV The limit value outputs are available as hardware outputs and additionally as logical outputs in the status in formation ofthe measured value The input signal for the limit value monitoring can be the gross value the net value the trigger result or the extreme values MIN MAX see chapter 5 2 7 Outputs Detailed information can be found in the help file AED_help_e Extreme value function The FIT includes an extreme value function which is able to monitor alternatively the gross or net measured values The command PVA carries out the output of both extreme values MIN and MAX At any time you can clear the extreme values using the command CPV You can activate the extreme values using the command PVS Detailed information can be found in the help file AED_help_e Dosing and filling control The filling and dosin
33. ngs via LIV1 OUT 2 Settings via POR Settings via LIV2 OUT 3 Settings via LIV3 OUT4 Settings via LIV4 The status of the inputs outputs can be read out using the command RIO 5 2 8 Dosing control E version only The operating mode IMD2 activates the dosing control which assigns all inputs and outputs with special functions Previously set limit values LIV and inputs via the POR command then have no influence on the status of the outputs A further series of parameters described in Part 3 of these instructions must be input for the control of dosing processes Inputs IMD2 Dosing IN1 Stop BRK IN2 Start RUN Depending on the output mode command OMD help file AED_help_e Description of the commands for filling and dosing applications the following output functions are activated HBM FIT Electrical connection 33 Outputs OMD0 OMD1 OMD2 OUT1 Coarse flow Coarse flow Coarse flow OUT2 Fine flow Fine flow Fine flow OUT3 Ready signal Empty Ready signal Empty Ready signal Empty ing ing ing OUT4 Tolerance exceeded Outside tolerance Alarm 6 1 FIT when emptying time 0 EPT gt OUT3 is ready signal after determination of the real value when emptying time gt 0 EPT gt OUT3 is emptying control by set time Electrical connection FIT wiring assignment The connection diagrams for FIT load cells are shown below The FIT in stainless steel
34. provides as an analysis tool of dynamic processes The bus is de signed as RS485 2 wire bus lines TB RB and TA RA GND This bus works independently of the CANOpen or DeviceNet or RS 232 or RS 485 4 wire interface The connection dia gram is shown in Fig 25 The interface setting of the bus is fixed and cannot be changed 38400 bit s 8E1 The in terface converter of HBM can be used to connect the RS485 bus to a COM port of the PC RS232 The functions and commands of the diagnostic channel are specified in the user manual of the transducer electronics AD103C FIT chapter Description of the commands for the di agnostic functions The address corresponds to the address of the transducer electronics AD103C FIT command ADR 00 89 default 31 see help file AED_help_e Description of the basic commande Additionally you can carry out the following functions via the bus Parameter Writing only changing not possible Measured values Reading of single measured values MSV Results Trigger and dosing results readable The diagnostic functions can be carried out using the HBM program AED_Panel32 only with version V3 0 0 The HBM display unit DWS2103 can be connected with this interface Than all implemented functions and parameters are accessible This is independent from the main communication channel FIT Inputs and outputs 45 6 4 Inputs and outputs 6 4 1 Electrical data of inputs The control signal m
35. rated vertical overload protection e Corrosion resistant laser welded e Electrical connection via connector e Degree of protection IP68 connectors IP69K HBM 3 1 HBM Models versions interfaces Models versions interfaces Overview of FIT variants The product number characterises the FIT variants as follows 1 FIT a b Cable length 0 without plug 1 3m 2 6m 3 12m Accuracy 3 C3 4 C4 Interface A RS232 B RS485 C CANOpen D DeviceNet Function S Standard E Extended Housing type 0 without 1 4 5 hermetical sealed stainless steel Product family FIT3 HBM has defined so called preferred variants which are described in the documentation Overview of product numbers see documentation CD 1 AED FIT_Doc All other variants non preferred types are available on request The various construction variants are described in the following chapters FIT Models 9 3 2 Models FIT digital platform load cells are supplied encapsulated in laser welded stainless steel en closures with permanently fixed connection cables with the following type name FIT 1bcde xxKG The stainless steel enclosure enables use under corrosive environmental conditions to de gree of protection IP 55 Fig 1 FIT 4bcde xxKG The stainless steel enclosure enables use under corrosive environmental conditions to de gree of protection IP 66 Fig 3 FIT 5bcde xxKG
36. required It is designed for degree of protection IP67 Fig 9 Dimensions FIT 0 FIT N 20 HBM Model FIT 0 Befestigung FIT 0 an Lasteinleitung 4xM6 Festigkeitsklasse 10 9 Anzugsmoment 14 Nm attachment FIT O at load introduction 4xM6 strength class 10 9 tighten torque 14 Nm Belastungsrichtung Mitte Plattform loading direction center of mounting plate Plattform mounting plate Lasteinleitung Konstruktion durch Kunden load introduction customer construction FIT 0 L Basisplatte Alternative Lasteinleitung empfohlene Ebenheit der base plate alternative load introduction Platte 0 1 mm an der Verbindungsfl che recommended flatness 0 1 mm at mounting area 4xM6 DIN 912 Festigkeitsklasse 10 9 Anzugsmoment 10 Nm max Einschraubtiefe 7 mm 4xM6 DIN 912 strength class 10 9 tighten torque 10 Nm max length of engagement 7 mm Wenn die W gezelle auf einer Basisplatte mit einer Ebenheit von lt 0 1 mm montiert ist erh ht sich die Grenzlast In Belastungsrichtung auf 1000 If the load cell is mounted on a base plate with a flatness of lt 0 1 mm the safe load limit in loading direction increases to 1000 Fig 10 Installation FIT 0 Instal
37. se operating instructions describe the hardware and the functions of the FIT digital load cells HBM 6 Special features 2 Special features e High overload limits e High torsion and bending strength e High resonance frequencies e 4limit value switches with hysteresis e Control of filling and dosing functions e Rapid digital filtering and scaling of the measurement signal e Serialinterfaces Optionally RS232 or RS485 4 wire UART CANOpen DeviceNet e All settings made via the serial interface e Power fail safe parameter storage e Indestructible storage of factory defaults e Selection of output speed of measured values up to 1200 measured values sec e Automatic zero tracking 2 e Automatic zero on start up 2 20 e Trigger functions internal level pre post triggering external pre post triggering e Diagnostic function e Operating voltage 10 V 30 Voc e Galvanically isolated power supply e Galvanically isolated control inputs and outputs HBM FIT Special features FIT FIT model FIT 1 e Integrated vertical overload protection e Corrosion resistant laser welded e Degree of protection IP55 FIT model FIT 4 e Integrated vertical overload protection e Corrosion resistant laser welded e Degree of protection IP66 FIT model FIT 0 previously PW 18i e Electrical connection via connector e Degree of protection IP67 FIT model FIT 5 e Hermetically sealed version e Integ
38. tes of up to 1200 meas urements per second and can be easily and rapidly adapted to the actual weighing system by means of adjustable parameters The integrated trigger function enables an event controlled weight value generation which e g significantly reduces external software requirements for Checkweigher applications The load cells are optionally delivered with the following interfaces e RS232 e RS485 e CANOpen e DeviceNet FIT load cell models FIT 1 FIT 4 and FIT 5 are completely encapsulated in stainless steel and are particularly suitable for applications in corrosive environments FIT load cell models FIT 0 with round connectors for electrical connection are cost effec tive and space saving in application The construction meets basic requirements for corro sion resistance In addition to the standard version S another version E with control functions two con nection cables is available This offers additional application areas with limit values and dos ing control functions sorting systems filling systems The limit switches and dosing function are available in all versions of FIT The FIT control functions are described in the Online Help AED_help_e The PC software AED PANEL 32 is available to facilitate parameter settings to display dy namic measurement signals and for comprehensive analysis of the dynamic system The HBM display unit DWS2103 can be connected to all FIT load cells The
39. the E version The inputs can be assigned various functions using the IMD software command IMD0 The status of the inputs has no influence on the measuring process it can however be queried with the command POR In this manner any digital sig nals e g from limit switches can be acquired by the control software without needing to install additional lines and UO modules IMD1 The inputs are assigned functions for the automation of the measurement process e g trigger function for checkweighers IMD2 The inputs are assigned functions for the dosing control HBM 30 HBM Inputs Inputs IMD0 IMD1 IMD2 Trigger input Query via POR External Function like IN1 cable 1 version S only trigger input see next section IN1 only version E Query via POR External Stop dosing BRK trigger input IN2 only version E Query via POR Tare select net Start dosing RUN value output Function diagram gt GND 1 signal In 2 pa processing GND2 Fig 15 Processing digital signals example with IMD 1 and two activated limit values Legend HE Galvanical isolation measuring electronics lt gt cable 2 Slope detection input 1 only when set for trigger function En Debouncing 20 ms FIT Outputs E version only 31 Information about using the inputs e The input function is not activated in the factory The applicable settings must b
40. the tensile and compressive direc tions Please note the permissible maximum values for eccentric loads and take into ac count overloads from knocks e Avoid force shunts during setup HBM FIT Model FIT 4 Cable output facing down 15 4 2 Model FIT 4 Cable output facing down The load cell in the model FIT 4 is fully protected by a laser welded stainless steel enclo sure Fig 7 the seal between the load application part 1 and enclosure is ensured by a silicone membrane The pressure compensation between the interior of the load cell and en vironment which is necessary for function is implemented via a venting tube facing down wards The load cell is designed for degree of protection IP66 The cable output is imple mented through the base FIT HBM 16 HBM Model FIT 4 Cable output facing down 15 420 79 N 2 3 22 118 0 2 20 4x M 6 7 mm tief deep i L m 2 Y Ke i i ji A TIT J Bel ftungsschlauch I Ii ventilation hose 6 5 200 mm lang long g10 _ m BS 160 _ 4 a 1 P U I el 9 g M 5 7 mm tiefldeep _ 35 02 E Fig 7 Dimensions FIT 4 cable and venting tube outputs facing downwards FIT Model FIT
41. ust be applied between the input and the specified ground reference The input in cable 1 can be directly actuated by a logic signal HCMOS but tolerates volt ages up to 12 V The inputs in cable 2 are galvanically isolated from the measurement circuit supply and are suitable for PLC signals The functions are described in Section 0 Signal form The following tables show the assignment of the logic states to the voltage values at the in put Levels between the given high and low ranges lead to undefined states and should be avoided All functions with exception of the external trigger are internally debounced The function is actuated when an active level is present at least 20 ms This prevents unintended triggering by interference peaks or multiple pulses that often occur during mechanical contacts The trigger function reacts to the falling slope of a switching pulse and is not debounced to ensure a defined reaction time When connecting the trigger device light barrier etc en sure that there is a clean signal without interference coupling as each pulse will trigger a measurement procedure see notes on cabling Section 6 1 Function Ext Trigger TAR BREAK RUN Quescient level defined high or low level Low Triggering event High low transition High level debounced Stable level at trigger input used The other line IN1 or Trigger must be set to low level or be un assigned See Section 5 5 De
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