LORENZ MESSTECHNIK GmbH
Contents
1. torque shaft with torque or bending counterhold at coupling The sensor housing may not be turned during the assembly Fasten Fasten Fixing Half Shells Before Coupling Assembly After Coupling Assembly 3 Shift the first coupling with sensor on the shaft string on customer side Support the housing at the same time so that the shaft is not exposed to bending moment and or torque Do not tighten 4 Carefully insert the second shaft string in the coupling without loading the housing or the shaft Do not tighten Do not tighten C Fastening Angle Fastening Angle E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 10 of 17 D LORENZ MESSTECHNIK GmbH 3555 sion favorire 8873022 5 Align and slightly fasten the fastening part supplied by the customer e g fastening angle at the housing of the sensor Fastening Angle 6 Slightly fasten the housing to the fastening part supplied by the customer e g fastening angle so that the position of the housing is fixed The shaft may not be distorted by this 7 Remove fixing half shells Fixing Half Shells E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 11 of 17 D LORENZ MESSTECHNIK GmbH 925 S2tie3s 131 07172 99700 8 a Firmly position angle support then b firmly position housing 9 Fasten couplings on customers si2. D LORENZ MESSTECHNIK GmbH 3555 sion favorire 8873022 Operation Manual for Torque Sensors For below and similar Types zus10 T Wed SOTLESITLLLO 191 POPIN ESSEL uaus JLUUIDISSDLU DR 2500 DR 2600 E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 1 of 17 D LORENZ MESSTECHNIK GmbH xxu Fex07172 8073022 Imprint Manufacturer Place Lorenz Messtechnik GmbH D 73553 Alfdorf References in this Text 1 6 Warning Notes Page 4 Attention must be paid to the accident prevention regulations of the trade associations Coverings and casings are necessary before operating the sensor This is also valid for commissioning maintenance and trouble shooting Duties of the coverings and casings are gt Protection from detaching parts Protection from contusion and shear Prevention from reaching rotating parts Prevention from being tangled up and or getting caught by parts Coverings may gt Not grind gt Notrotate Coverings are also necessary outside of operating and motion travel areas of persons These demands can be modified if other sufficient safety devices are available During operation the safety precautions must be operative By vibrations damages can occur at the device 4 Mechanical Assembly Page 7 Caution During the assembly inadmissibly large forces may not act on the sensor or the couplings At small torques lt 20
3. LORENZ MESSTECHNIK GmbH vxo Faxor 7a 9373022 6 Measuring 6 1 Engaging The warming up period of the torque sensor is approx 5 min Afterwards the measurement can be started The warming up period of the torque sensor is approx 5 min 6 2 Direction of Torque Torque means clockwise or clockwise torque if the torque acts clockwise when facing the shaft end In this case a positive electrical signal is obtained at the output Torque sensors by Lorenz Messtechnik GmbH can measure both clockwise and counter clockwise direction 6 3 Static Quasi Static Torques Static and or quasi static torque is a slowly changing torque The calibration of the sensors occurs statically on a calibration device The applied torque may accept any value up to the nominal torque 6 4 Dynamic Torques 6 4 1 General The static calibration procedure of torque sensors is also valid for dynamic applications Note The frequency of torques must be smaller than the natural frequency of the mechanical measurement setup The band width of alternating torque must be limited to 70 of the nominal torque 6 4 2 Natural Resonances Estimate of the mechanical natural frequencies fo fo Natural Frequency in Hz J J2 Moment of Inertia in kg m c Torsional Rigidity in Nm rad Ji Js Further methods for the calculation of natural resonances are corresponding purchasable programs or books e g Holzer Procedure Dubbel Taschenbuch f r den Mas
4. be damaged Do not strike sensor housings with tools Do not apply bending moments on the sensor e g through levers The torque sensor must be supported to avoid falling down during the dismantling 9 Transportation and Storage Transport or store the sensor with mounted fixing half shells only The transportation of the sensors must occur in suitable packing For smaller sensors stable cartons which are well padded are sufficient e g air cushion film epoxy crisps paper shavings The sensor should be tidily packed into film so that no packing material can reach into the sensor ball bearings Larger sensors should be packed in cases 9 1 Transportation Only release well packed sensors for transportation The sensor should not be able to move back and forth in the packing The sensors must be protected from moisture Only use suitable means of transportation 9 2 Storage The storage of the sensors must occur in dry dust free rooms only Slightly lubricate shafts and flanges with oil before storing rust 10 Disposal The torque sensors must be disposed according to the valid provisions of law For this see our General Terms and Conditions www lorenz sensors com 11 Calibration At the time of delivery torque sensors have been adjusted and tested with traceable calibrated measuring equipment at factory side Optionally a calibration of the sensors can be carried out 11 1 Proprietary Calibration Acquisitio
5. cables together with control or heavy current cables Always assure that a large distance is kept to engines transformers and contactors because their stray fields can lead to interferences of the measuring signals If troubles occur through the measuring cable we recommend to run the cable in a grounded steel conduit 5 5 Electrical Calibration Only use the calibration control when the torque sensor is unstressed 5 5 1 Switch On of Calibration Control at Analog Output Control Schirm Gehduse Shield gr n green G braun brown grau grey Uia 3 5 VDC Ural lt 28 VDC rot red Exc GND D weiss white gelb yellow 5 5 2 Calibration Control at RS485 The activation of the calibration control occurs through a command For this see command SCMD_WriteFullStroke from Lorenz Protocol Document number 090110 5 6 Speed Sensor Option At the reflexion procedure the radiation of the light source is reflected differently from bright and dark surfaces located on the shaft Depending on the number of the markings at the shaft surface a modulation of the light arises Optical samplings of the rotation speed are suitable for very small and also very large rotation speeds The sensor must be protected from pollution Optical Sensor Reflexion Light E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 13 of 17 D
6. positioning and the fixation of the shaft in the stator At mounted half shells the shaft can still be turned O Ring Fixing Half Shells Sensor 4 4 Basic Assembly ingle Joi DR 2500 Single Jointed Specimen tud zum Couplinia Load Machine Angle Support for Stator 4 5 Installation Instruction Measuring Range 0 005 N m up to 150 N m Far Treat the sensor with utmost care Do not apply bending moment or torque to the sensor S Store or transport the sensor with fixing half shells only CE Only use single jointed couplings on both sides The two coupling connections at customers side must be aligned exactly to each other With the use of BSD THOMAS Miniature Couplings Type 966 the axial tension may not exceed the maximum of 0 2 mm and the angular offset may not exceed the maximum of 0 5 First assure that the couplings can be easily shifted on the shaft ends The fixing half shells shaft to housing must stay in mounted condition at the beginning of the assembly The housing may be positioned firmly only after the fixing half shells have been removed E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 9 of 17 D LORENZ MESSTECHNIK GmbH shcon favorire 8873022 4 5 1 Installation Steps Testing and alignment of the coupling connections on customers side 2 Fasten both single jointed couplings to the shaft ends of the torque sensors without loading the
7. sheet must be considered as well e An air gap between rotor and stator must be existent The rotor may not touch the stator in any operating state e Axial position of the rotor to the stator see data sheet cE For further details see the manual for couplings and or the data sheet 4 2 Assembly Possibility Stator Thread holes for fixation are available at the stator housing CS The thread depth must be considered possible damage of the stator electronics See data sheet 4 3 Fixing Half Shells 4 3 1 Nominal torque up to 10 N m Since the shaft has no bearings the sensor is delivered with fixing half shells The fixing half shells are used for the positioning and the fixation of the shaft in the stator At mounted half shells the shaft can be turned and it can also be damaged by forces Remove the fixing half shells as described hereafter in chapter Installation Instruction Torque Sensor d ixing Half Shells F f s A A Fixing Screws M 2 5 x 4 Fixing half shells mounted Remove the fixing half shells after the sensor assembly E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 8 of 17 Obere SchloBstr 131 07172 93730 0 LORENZ MESSTECHNIK Gmb 73553 Altdort Fax 07172 93730 22 4 3 2 Nominal Torque 20 N m up to 150 N m Since the shaft has no bearings the sensor is delivered with fixing half shells The fixing half shells are used for the
8. 2 Intended US c 4 MN DEI ET 4 1 3 1 Neglecting of Safety Notes eee eesceesececeenesseneeesneeesenersaneseaneseseeseseeeseeeseanersseeseseeeeseneseanerees 4 1 3 2 Remaining Dangars u 4 1 4 Reconstructions and Modifications uursnuursnnennnnnnnnnennnnnnnnnnnnnnnennnnnnnnnennnnnnnnnnnnnnnennnnennnnernnnnennnnn 4 D ONEM enl 4 1 6 Warning Notes iu oce eade eset er andre na tp image eis ce de up ues e an ee na des Herne 4 2 PERM DOTIMIMOMS isis E E t 5 2 1 I 5 2 2 Definition of the Pictograms on the Torque Sensor eene 5 3 JProduct Description eir ne ee eet mace ees citata ete eec att te tiu Pee cee 5 3 1 Mechanical Setup o Leo E Reeve uite e ieri enit 5 MEI 161 4 6 es o ee 6 3 2 1 Sensors with Analog Output 0 niic une reae taba ne Te dva eto ee Te LT eto heine 6 3 2 2 Sensors with Interface RS485 sessesssssssssseeeeeeeennnee nnne enne nnne nennen enne nenne 6 3 2 3 The Serial COMMUNICAT NTC 6 4 Mechanical Assembly settensasslobeevtecdeeseteivcesvgetiveseseddonsvteddvasetetutagegebevaneseioreseteedeaseperdoesenenvvereney 7 4 1 COUDlIIgS tote UL MM MM 7 4 1 1 Examples for Single Jointed Couplings sesseneenennenmenm emen 7 4 1 2 Misalignment Possibilities of Single Jointed Couplings 7 4 1 3 Alignment of the Measurement Arrangement uurssuesnnnn
9. N m connect the sensor electrically during the assembly and observe the signal the measurement signal may not exceed the limit values Co During the assembly the sensor must be supported to protect it from falling down ia At torques lt 20 N m always start the assembly at the low torque resistance side cr Admissible assembly offset from rotor to stator axial 1 mm 4 1 3 Alignment of the Measurement Arrangement Page 8 For further references see coupling manual of the coupling producer and or the data sheet 4 2 Assembly Possibility Stator Page 8 The thread depth must be considered possible damage of the stator electronics See data sheet 4 5 Installation Instruction Page 9 Treat the sensor with utmost care Do not apply bending moment or torque to the sensor Store or transport the sensor with fixing half shells only cS Only use single jointed couplings on both sides 6 1 Engaging Page 14 Warming up period of the torque sensor is approx 5 min 6 4 2 Natural Resonances Page 14 An operation of the device in natural resonance can lead to permanent damages E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 2 of 17 D LORENZ MESSTECHNIK GmbH 925 S2tie3s 181 07172 99700 Contents A 1 1 16 Nd 4 1 1 Safety and Caution Symbols sssssssssseseeeeeeneneen eene nennen eren nennen enne nennen 4 V
10. bly must be carried out by qualified personnel only The personnel must have the knowledge and make use of the legal regulations and safety instructions 1 6 Warning Notes Attention must be paid to the accident prevention regulations of the trade associations Coverings and casings are necessary before operating the sensor This is also valid for commissioning maintenance and trouble shooting Duties of the coverings and casings are gt Protection from detaching parts Protection from contusion and shear Prevention from reaching rotating parts Prevention from being tangled up and or getting caught by parts Coverings may gt Not grind Notrotate Coverings are also necessary outside of operating and motion travel areas of persons These demands can be modified if other sufficient safety devices are available During operation the safety precautions must be operative By vibrations damages can occur at the device E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 4 of 17 B LORENZ MESSTECHNIK GmbH Vx siet ELT ar30 22 j 2 Term Definitions 2 1 Terms Measuring Side Mechanical connection of the torque sensor in which the torque to be measured is applied Usually this side has the smallest moment of inertia Drive Side Mechanical connection of the torque sensor on the opposite side of the measuring side usually with the largest moment of inertia At stati
11. c torque sensors the housing is fastened on this side Low Torque Resistance Side The shaft of the arrangement drive load which can be turned considerably smaller with torque than the nominal torque of the torque sensor M lt lt Mnenn 2 2 Definition of the Pictograms on the Torque Sensor The measuring side of the torque sensor is designated as follows Measuring side M Or M Core More information can be found on the data sheet if needed 3 Product Description The sensor measures static and dynamic torques The mounting position of the torque sensor is horizontally Caution it is to be differentiated between measuring side and drive side see data sheet of the sensor http www lorenz sensors com 3 1 Mechanical Setup The sensor consists of a stationary part the stator and a rotary part the rotor Measuring Side Rotor Electronics supply of the strain gauge full bridge and the measuring amplifier Stator Speed Sensor Rotating Transformer signal transmission from stator to rotor and contrariwise Measuring Body E 2 with strain gauge full Cable Connection bridge electrical connection Stator Electronics supply and measuring amplifier E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 5 of 17 D LORENZ MESSTECHNIK GmbH 95s Sehiess18 _B 07172 7200 3 2 Electrical Setup The supply of the rotor electronics occurs by an alternating v
12. chinenbau Springer Verlag ES Operation of the device in natural resonance can lead to permanent damages 6 5 Speed Limits The maximum speed indicated in the data sheet may not be exceeded in any operating state 6 6 Disturbance Variables By disturbances measured value falsifications can occur by e Vibrations Temperature gradients Temperature changes Arising disturbance variables during operation e g imbalance Electrical disturbances Magnetic disturbances e EMC electromagnetic disturbances Therefore avoid these disturbance variables by decoupling of vibrations covers etc E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 14 of 17 D LORENZ MESSTECHNIK GmbH 3555 sion favorire 8873022 7 Maintenance To a large extend the torque sensor is maintenance free 7 1 Maintenance Schedule Action Frequency Date Date Date Control of cables and connectors 1x p a Calibration lt 26 months Control of fixation flanges shafts 1x p a 7 2 Trouble Shooting This chart is used for searching for the most frequent errors and their elimination Problem Possible Cause Trouble Shooting No signal No sensor excitation e Outside of permissible range e Connect excitation e Cable defect e No mains supply Signal output connected wrong e Connect output c
13. de counterhold on coupling or at customers side Start with the low torque resistance side by this no or just small torque will act on the shaft Tighten Angle Support 5 Electrical Connection 5 1 Pin Connection See attached test certificate 8 pin DR 2500 1 Excitation 12 28 VDC 2 Excitation GND OV 3 Signal 5 V 10 V 4 Signal GND OV L lt 2 0 V 5 Control H 3 5 V 6 Option Speed TTL 7 NC 8 NC DR 2600 Excitation 12 28 VDC Excitation GND oV Output A RS485 Output B RS485 NC Schirm Geh use Shield gr n green grau grey Q braun brown rosa pink 2 rot red blau blue weiss white Option Speed TTL NC NC E Mail info lorenz sensors com Internet www lorenz sensors com Technical changes reserved gelb yellow View socket on soldering side 090256a Page 12 of 17 D LORENZ MESSTECHNIK GmbH shcon favorire 8873022 5 2 Cable Only use a shielded cable with preferably small capacity We recommend measuring cables from our product range They have been tested in combination with our sensors and meet the metrological requirements 5 3 Shielding Connection In combination with the sensor and the external electronics the shield forms a Faraday Cage By this electro magnetic disturbances do not have any influence on the measurement signal 5 4 Running of Measuring Cables Do not run measuring
14. e resistance side er Admissible assembly offset from rotor to stator axial 1 mm 4 4 Couplings 4 1 1 Examples for Single Jointed Couplings For this torque sensor we recommend the couplings intended by Lorenz Messtechnik GmbH which must be able to balance an axial radial or angular offset of the shafts and not allow large forces to act on the sensor 4 1 2 Misalignment Possibilities of Single Jointed Couplings m m E m Angular Misalignments Axial Misalignments Note Radial misalignments are only possible in the combination of single jointed coupling torque sensor as adapter single jointed coupling Thus with both single jointed couplings the torque sensor forms a double jointed coupling Radial Misalignments E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 7 of 17 D LORENZ MESSTECHNIK GmbH 3555 sion favorire 8873022 4 1 3 Alignment of the Measurement Arrangement Precisely alignment of the couplings reduces the reaction forces and increases the durability of the couplings Disturbance variables are minimized as well Due to the multitude of applications an alignment of the coupling with a straight edge in two levels vertical to each other is sufficient However in drives with high speed an alignment of the coupling shaft ends with a dial gauge or a laser is recommended Further points to consider e The axis height of the torque sensor data
15. eatinn 14 64 Dynamic Foro 14 6 4 1 Cc ee ea esse elle el 14 6 4 2 Natural Resonances un ee estet uttter 14 6 5 Speed Limits reesi e aaa e ae a IEEE Lre 14 6 6 Disturbance Variables iesu iania aa eng rennen Denn EE ANDA 14 OMM IET EP aa a aa CORE ARCHE aa ai aaa da eaaa iaa a aaa aa a 15 7 1 Maintenance Schedule esses sees enne entente nnne nnne nre nnne nennen 15 7 2 Iro ble Shoolinge r 4 00 ee ee a I a a aeg nee nee 15 8 Decommission 16 9 Transportation andistorage u 2 2en ea En nn nn 16 9 1 Transportation 16 Sr SOFAS xXx LEER CM MTM TE 16 10 BIET Epsom DEHNHEHRELEERERDEHBERISERERENTGE 16 11 GAD ANON D 16 11 1 Proprietary Calibration esses ne mener enne nne nnne 16 11 2 ID Cali rations an aae ae aaee aeaaea ee tts ccedaneesssuctasaceeatecsvcutasecebs ovasecetscecseatesavevetsceastuneuactceaatenstacs 16 11 3 FOG ANID TATION E 16 12 Data Sheet uu sen 17 13 Literae eiectus eE e Pa e e E SE ES EIE AE E E 17 E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 3 of 17 D LORENZ MESSTECHNIK GmbH Ssss scot Fax 07172 9970 2 j 1 Read First 1 1 Safety and Caution Symbols Caution A Injury Risk for Persons Damage of the Device is possible ae Note Important poi
16. n of measurement points and issuing of a calibration protocol Traceable calibrated measuring equipment is being used for the calibration The sensor data are being checked during this calibration 11 2 DKD Calibration The calibration of the sensor is carried out according to the guidelines of the DKD The surveillance of the calibrating laboratory takes place by the DKD At this calibration the uncertainty of measurement of the torque measuring instrument is determined Further information can be obtained from Lorenz Messtechnik GmbH 11 3 Re Calibration The recalibration of the torque sensor should be carried out after 26 months at the latest Shorter intervals are appropriate e Overload of the sensor e After repair e After inappropriate handling e Demand of high quality standards e Special traceability requirements E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 16 of 17 D LORENZ MESSTECHNIK GmbH shcon favorire 8873022 12 Data Sheet See www lorenz sensors com 13 Literature Dubbel Taschenbuch f r den Maschinenbau Springer Verlag Protocol for the flexible use of digital sensors and interfaces RS485 manual by Lorenz Messtechnik GmbH E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 17 of 17
17. nnnnennnnnnnnnnnnnnnennnnnn nennen nnnnnnnnnnnnnnnr nn 8 4 2 Assembly Possibility Stator u 2er nalen ea ne nd 8 43 Fixing Halt Shells n tetto aee een en ee ie 8 4 3 1 Nominal torque up to 10 NM 2 en 8 4 3 2 Nominal Torque 20 Nm up to 150 N m uuussunnssnnnrsnnnennnnnnnnnennnnnnnnnnnnnnnennnnnnnnnennnnnnnnnnen nennen nennen 9 AA BASIC CIIM 9 4 5 Installation Dn oio ERE en Ina 9 4 5 1 Installation ees To T ERE EDO I E M 10 5 Electrical Connection asesinan aaraa enne nnne nenne these nenne aoha aande nennen nnne entren nnne 12 5 1 PIniGOMMECT ON cm 12 GN MERC TE 13 5 3 Shielding CONMECHO NY cm 13 5 4 Running of Measuring Cables ssssssssessseeeeeeneennen nnne mne nnne nennen nnne nennen nere nne nnns 13 5 5 Electrical Calibration uuursnserssnnsnnnensnnnnnnnennnnnnnnnnnnnnnennnnnnnnnennnnnennnnennnnennnnnnnnnnnnnnnen nennen nnnernnnnnnnnnnn 13 5 5 1 Switch On of Calibration Control at Analog Output seen 13 5 5 2 Calibration Control at S485 25 ne es ee ee 13 5 6 Speed Sensor Option uuursnsersnnnsnnnennnnnnnnnennnnnennnnnnnnnennnnnnnnnennnnnennnnennnnennnnnnnnnnnnnnnen nennen nnnernnnnnnnnnn 13 6 Meas ring Ecce 14 6 1 sineret E 14 6 2 Direction of Torgile aree ribs e ti ee ere Dive idet ns 14 6 3 Static Quasi Static TOFques ais eta eret seen td eret aae EAE nee eben Le SEE sonenvateededesscrn
18. nts to be considered 1 2 Intended Use Torque sensors are intended for the measurement of torques This measurand is further suitable for control tasks The valid safety regulations should be absolutely respected The torque sensors are not safety components in the sense of the intended use The sensors need to be transported and stored appropriately The assembly commissioning and disassembling must take place professionally 1 3 Dangers The torque sensor is fail safe and corresponds to the state of technology 1 3 1 Neglecting of Safety Notes At inappropriate use remaining dangers can emerge e g by untrained personnel The operation manual must be read and understood by each person entrusted with the assembly maintenance repair operation and disassembly of the torque sensor 1 3 2 Remaining Dangers The plant designer the supplier as well as the operator must plan realize and take responsibility for safety related interests for the sensor Remaining dangers must be minimized Remaining dangers of the torque measurement technique must be pointed out Human mistakes must be considered The construction of the plant must be suitable for the avoidance of dangers A danger analysis for the plant must be carried out 1 4 Reconstructions and Modifications Each modification of the sensors without our written approval excludes liability on our part 1 5 Personnel The installation assembly commissioning operation and the disassem
19. oltage generated in the stator which transfers to the rotor through a rotating transformer There it is rectified and stabilized With this supply the strain gauge bridge is fed For the electrical calibration control of the sensor a control signal is up modulated to the supply by the p processor in the stator and transferred to the rotor There it is filtered and evaluated by the uPC which also activates the internal switch for the detuning of the strain gauge bridge The measuring signal of the strain gauge bridge is conditioned in an amplifier and then converted into a digital signal which will be transferred to the stator by another rotating transformer Compared to the analog signal the measuring signal in digital form is much more disturbance free The remaining distance of the measuring signal within the sensor occurs in digital form completely Thus the measuring system achieves a high reliability of operation This signal is further conditioned in the stator comes into a p processor then depending upon sensor type it is converted to a voltage signal digital signal or to current and will then reach the output of the sensor and can be directly measured at the connector Rotating Transtormer i Supply QA Oscillator i Voltage BaDE 4 MHz Suppl y and Cycle and Control Signal Control Signal Y i Filter for Calibration Control Signal UP Process
20. or lt __ Control i Rotating Transformer Y Es Signal Adaption enna igna Ot Analog or igna T Output Digital Conditioning nias od Serial Data Ti 15 bit ansmission A D Converter iit errang AO Speed Signal Output Conditioning 1 Option BO w S Speed Option Stator Rotor 3 2 1 Sensors with Analog Output At this output the digital signal is converted into DC voltage of 0 V 5 V proportionally to the torque and is available at the connector output 3 2 2 Sensors with Interface RS485 The torque sensor has a digital interface RS485 for the signal output and automatic sensor identification The protocol enables high dynamics See separate manual for further information 3 2 3 The Serial Communication See Lorenz Protocol Document Number 090110 Lorenz Messtechnik GmbH E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 6 of 17 LORENZ MESSTECHNIK GmbH Yan Ba 4 Mechanical Assembly gt Caution During the assembly inadmissibly large forces may not act on the sensor or the couplings At small torques lt 20 N m connect the sensor electrically during the assembly and observe the signal the measurement signal may not exceed the limit values ce During the assembly the sensor must be supported to protect it from falling down gt At torques lt 20 N m always start the assembly at the low torqu
21. orrectly e Evaluation electronics defect Sensor does not react to torque Shaft not clamped e Clamp correctly No power supply e Outside of permissible range e Connect supply e Cable defect e No mains supply Cable defect e Repair cable Connector connected wrong e Connect correctly Signal has dropouts Axial position rotor to stator e Align rotor outside of tolerance Cable defect e Repair cable Zero point outside of tolerance Cable defect e Repair cable Shaft mounted distorted e Mount correctly Distorted shaft string e Release from distortion Strong lateral forces e Reduce lateral forces Distorted flanges e Check evenness of flange surfaces Shaft overloaded e Send to manufacturer Wrong torque indication Calibration not correct e Re calibrate Sensor defect e Repair by manufacturer Torque shunt e Eliminate shunt Shaft drags Shaft drags in the rotor e Align shaft e Concentricity of the parts is not ensured Lateral forces too large e Decrease lateral forces Oscillations Alignment of shaft not correct e Align correctly Unbalance e Balance the corresponding parts E Mail info lorenz sensors com Technical changes reserved 090256a Internet www lorenz sensors com Page 15 of 17 D LORENZ MESSTECHNIK GmbH 3555 sion favorire 8873022 8 Decommission e All sensors must be dismantled professionally e The dismantling of the torque sensor occurs in contrariwise sequence as described in chapter Installation Instruction Couplings may not
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