Precision for Fast Applications

Page 1:Precision for Fast ApplicationsMagnetically coded position and angle measurement systems BML
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Page 2:3www.balluff.comContentsMagnetically Coded Position andAngle Measurement Systems 4Exceptionally precise speed measurementPerfect for Fast Applications 6For Long Distances 8Accurate cutting in a cut centerExtremely Precise− Mini-sensor 10First-class quality in almost no timeAt High Speed 12Unsurpassed in a drilling and milling centerImpact and Vibration-resistant 14Perfect for bending and punchingFor Maximum Control Dynamics 16Positioning and monitoring workpiece carriers perfectly in real timeRotary Indexing Center Precision 18Excellent results at high speedsAbsolute Series 20BML-S1G and BML-S1HIncremental Series 22BML-S1F and BML-S2E

Page 3:4Magnetically Coded Position andAngle Measurement SystemsExceptionally precise speed measurementAbsolute, incremental and real-time-capableMagnetically coded position and angle measurement systems BMLwith absolute or incremental output signal support highly dynamicposition and angle measurement tasks as real-time-capable sys-tems. The BML is a master of measuring speed and revolutions perminute, even with very quick movements.High-resolution, very precise and extremely fastThe contact-free, robust and dirt-resistance measurement systemsare high-resolution, very precise and extremely fast. Accuracy levelsof up to ±7 µm can be achieved with resolutions down to 1 µm. Highspeeds of up to 20 m/s are also possible.Stable over the long term thanks to the Permagnet®processThe Permagnet®process developed by Balluff provides the basis fortheir high precision. This gives the tapes coded using this technologytheir one-of-a-kind accuracy and long-term stability.Linear and rotaryMagnetic tape systems consist of a sensor head, a tape for the usein linear or rotary applications and accessories.Flexible useDesigns for long measurement sections and incredibly compactconstruction give the systems versatility. Extremely compact dimen-sions with unparalleled compact sensor head make them perfect forintegration even in tight spaces. Conveyor tapes open up excep-tional design freedom as user-fabricated rolled goods available insizes up to 48 m long.Customized solutionsFabricated and customized solutions with individual encodings cor-responding to your requirements allow you to achieve the perfectresults.

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Page 5:6Perfect forFast ApplicationsThe magnetically coded position and angle measurement sys-tems BML prove their value in fast applications where precision isessential. This includes monitoring slide positions in linear drives,positioning machining units, such as laser beam or water jet cut-ters and controlling rotational speed and position on rotary driveswith absolute reliability. They are perfect as feedback systems inelectrical drive shafts. This is because the real-time-capable positionmeasurement systems BML make position information available inmicroseconds.

Page 6:7Industrial-grade for harsh environmentsThe wear-free systems are recommended for extreme conditions.They are impact and vibration-resistant, sensitive to dirt and tolerantof electric interference.Longer transit timesUsing the measurement systems with long-term stable tapes re-duces downtime and service calls. Expensive, service-intensive andspeed-limiting encapsulations, such as those with optical systemsare no longer necessary.

Page 7:8For Long DistancesAccurate cutting in a cut centerIn cut centers up to 20 m long, workpieces must be cut to the rightsizes lengthwise and crosswise. The different axis movements haveto be followed accurately to ensure a precise cut.Absolute, magnetically coded position and angle measurementsystems BML-S1G ensure high precision on water jet cutters, lasercutting centers and in wood processing. Their durable metal hous-ing – encapsulated with stainless steel on the bottom – guaranteesprotection against electromagnetic influences and ensures reliableoperation, even in very dirty environments. The stainless steel coverstrip protects the tape, which is inserted into a groove. This leavesno opportunity for dirt, liquids or metal shavings to find hold.

Page 8:9www.balluff.com 9www.balluff.comMonitoring lengthwise and crosswisecontact points and cutting dimensionsThanks to Balluff Permagnet®technology,BML-S1G monitor both the lengthwise andcrosswise contact points stops of everyworkpiece and the cutting dimensions veryeffectively. The high accuracy makes it pos-sible to monitor slippage on the longitudinalaxis and make adjustments. They offer ahigh resolution of 1 µm with measuringlengths of up to 48 m. Their absolute codingmeans the position value is available imme-diately after the device is switched on. Thisensures fast startup.

Page 9:10Extremely Precise − Mini-sensorFirst-class quality in almost no timePrecision measurement under adverse conditionsPerfect imprinting, engraving or milling of the customized workpiecesrequires exceptional accuracy, both during size formatting and dur-ing subsequent machining. First-class quality is ensured only if bothwork smoothly.Fast format changeFor changing formats, the magnetically coded position and anglemeasurement system supports a speedy conversion. The preciseposition information allows for an automated format change.This enables optimal and fast adaptation to individual applications,increases their flexibility and ensures you have the best quality.

Page 10:11Uniform plate feedThe high-resolution, incremental measur-ing systems control the infeed and ensureuniform feed.Rotary measurements take place preciselyand reliably even in the presence of lateralplay. Their absolute measurement directly atthe load eliminates the play of the gear andgear wheels. The tape can be used for linearor rotary applications.Accurate positioningThe position of the processing slide is mea-sured in real time and enables outstandingresults thanks to the high accuracy of theBML-S1F.Unparalleled compact sensors – protected and easy to installCompact magnetically coded position and angle measurementsystems BML-S1F provide flawless machining. Their precisionmeasurement is not impeded by ink vapors when printing or by dustand dirt when engraving or milling. Even cleaning agents do not influ-ence the measurement result. The unparalleled compact sensors areinstalled in a protected position and the Permagnet®tape is coveredby a stainless steel strip. This results in optimal use of the availablespace. The sensor head can be installed parallel or perpendicular tothe tape.

Page 11:12At High SpeedUnsurpassed in a drilling and milling centerIn a fast cycleSpeed is required when machining workpieces in drilling and millingcenters. This is true for both the drilling and milling as well as themonitoring measurement system. Correct positioning and accuratetool guidance are the top priority.High-speed interfaceBiSS-C – bidirectional!The absolute signal of the BML-S1G does not require any refer-ence runs and the selectable real-time signal, in addition to the SSIoutput signal, supports fast applications in a closed control loop.Alternatively, BML-S1G can be used bidirectionally with the brandAccurate positioning of the linear processing axisIn fast applications, absolute, magnetically codedposition measurement systems BML-S1G with highresolution enable precise measurements of long lengths.For accurate positioning of the different linear axes, anynumber of these compact sensors can be placed on ameasuring tape at lengths of 20 m or more. This ensuresthe quick workpiece machining in a drilling center, sincethey guarantee highly dynamic and accurate positioningof the linear processing axes.Customized solutionsIf multiple BML-S1Gs are used, an interface-converter is available (e.g. SSI on EtherCAT).Touch-displays with customer-specificinterfaces are also available.new BiSS-C high-speed interface, using all of the advantages of thenew technology. The BML-S1G can also be reparameterized lateron when upgrading the controller from SSI to BiSS-C, since bothinterfaces are hardware-compatible.With self-diagnosticsThe self-diagnostic function of the BML-S1G guarantees fast errordetection, ensuring that downtimes are kept to a minimum whencommissioning or in the case of error. The systems are easy toset up thanks to their robust tolerances and the new error codesthat can be read out using LEDs or the new bidirectional BiSS-Cprotocol.

Page 12:13Perfectly adjusting to applicationsThe user-fabricated magnetic tape magnetized using the Permag-net®process is highly precise and features long-term stability and isavailable as rolled goods up to 48 m. This means the system can betailored specific to the application. At the same time, the user-fabri-cation contributes to reducing stockkeeping costs.

Page 13:14Impact and Vibration-resistantPerfect for bending and punchingHigh system accuracyCombined with highly accurate Balluff electronics, the tapes haveexcellent system accuracy. In a closed control loop, this enablesextremely dynamic, virtually silent movements while also provid-ing exceptional system rigidity. The easily integrable systems in theAccurate position feedbackAn absolute measuring BML-S1H handles movement monitor-ing in a punching, nibbling or bending machine. Its accurateposition feedback even returns optimal results among heavyimpacts and vibrations. The measurement system monitors lin-ear movement directly at the load using tape that is embeddeddirectly into a groove on the push rod of the electric cylinder.This reliably eliminates inaccuracies and tolerance shifts. Real-time interfaces support fast applications.compact housing can be used to read in rotary and linear systems,parallel or perpendicular over the tape. Fast applications are sup-ported through their real-time interfaces.

Page 14:15www.balluff.com 15Ring-shaped tape for speed and anglemonitoringThe universally applicable incrementalposition measurement system BML-S2Ewith ring-shaped tape for speed and anglemonitoring returns optimal results at thematerial feed of a punching machine. On areel, it checks how much material has beenunwound using rotational motion. The ex-tremely robust special plastic of the housingis long-term stable and resistant to dirt andliquids.

Page 15:16For Maximum Control DynamicsPositioning and monitoring workpiece carriers perfectlyin real timeMonitoring linear motorsLinear drives used in machining centers are guided with precisionusing absolute or incremental position measurement systems BML.The resolution and accuracy can be precisely selected to facilitatethis. The incremental systems also allow reference points to bespecified according to individual requirements.The excellent magnetization quality of Permagnet® tapes ensuresstable measurement over the long term and provides a long servicelife for the system. This also gives you the option of placing the tapessurprisingly close to residual magnets. The outstanding accuracy en-sures maximum stability of the motor in a closed control loop, saveselectricity and enables dynamic, virtually silent movement.

Page 16:17Extremely fast transfer of up to 10 m/sWorkpiece carriers must be positioned very precisely, assignedclearly and routed from station to station quickly. The absolute BML-S1H and incremental BML-S1F ensure precise, reliable results in realtime. They ensure an extremely fast transfer at high speeds of up to10 m/s. Incorrectly assigned workpiece carriers are reliably identi-fied and discarded for error correction. This is how highly accuratesystems enable maximum control dynamics. The tapes of incremen-tal BML-S1Fs can each be magnetically labeled and can be clearlyidentified as a result. Their magnetic fine interpolation track ensuresextremely accurate positioning at the same time.Versatile installation saves roomPick-and-place machines are used to cycle all of the steps optimallyand execute them with precision when processing on a transfer line.From handling small parts to installing electronics to assemblingmodules. The first bit of valuable space is saved in the design ofpick-and-place machines with the choice of sensor installation paral-lel or perpendicular to the tape, keeping the need for high-precision,ground surfaces to a minimum.

Page 17:Rotary Indexing Center PrecisionExcellent results at high speedsAccurate positioning of workpieces and spindlesThe movement axes of workpieces and processing spindles in arotary indexing center have to be monitored reliably: The precisepositioning of the workpieces and the movement of the spindles inrelation to the workpiece.18Highly dynamic, reliably measurement systems are required to moni-tor these fast, short movements.Exceptional accuracy is required for good results and narrow toler-ances. That is the only way to achieve high throughput.

Page 18:19High-speed spindle monitoringFor reliable processing, the rotational speed and angle of the toolspindles have to be monitored reliably. This requires systems withanalog output signals. Encoder systems that are highly precise, veryexpensive and difficult to set up due to their low tolerances are oftenused for this task.The BML-S1F is a cost-effective, reliable and precise alternative forhigh-speed spindle monitoring. This allows surface speeds of upto 100 m/s (up to 40,000 rpm) to be highly accurately and reliablymonitored using a suitable ring tape. Reference runs and angle de-tection, such as for changing tools, are possible at low speeds usingan integrated reference sensor. Liquids and grease have no effect onthe fully enclosed metal housing.The absolute BML-S1H with a precise tape and high resolution mas-ters these tasks with flying colors. High speeds are ensured by a fastBiSS-C interface or an SSI interface with a separate analog real-timesignal. Like all absolute systems, the BML-S1H is available immedi-ately after a machine breakdown without a reference run.Its robust metal housing and the stainless steel cover of the tape en-sure suitability for industrial applications even in dirty environments.The extremely small design can be installed parallel or perpendicularto the tape and guarantees easy integration intothe machine concept.

Page 19:20Absolute SeriesBML-S1G and BML-S1HSeriesOutput signalData formatResolutionLengthwise approach direction Order codePart numberCrosswise approach direction Order codePart numberRepeat accuracyOverall system accuracySupply voltageCurrent consumption at 5 V supply voltageMax. read distance sensor/tapeMax. measuring lengthSignal period fine interpolation trackMax. travel speedSampling rate fStandardOperating temperatureStorage temperatureHousing materialConnectionDegree of protection as per IEC 60529All data in conjunction with tape BML-M02-A55...Variants with 24, 25 or 26 bits can also be ordered.2We also feature variants with 0.98, 2, 5 or 10 μm.AccessoriesSeriesOrder codePart numberLength, order in cmMeasuring lengthMagnetic tape materialBML-S1G − high-resolution for long lengthsThe absolutely coded position measurement system BML-S1G of-fers high resolutions at large measuring lengths.The rugged metal housing with stainless steel-encapsulated floorprotects against electromagnetic influences and allows for reliableoperation even in heavily contaminated environments. With theabsolute coding, the position value is available immediately afterthe system is switched on. The installation tolerances and the LEDfeedback make it very easy to set up and install the system. Thediagnostic function enables fast error detection and thus provides forshort downtimes during setup and when errors arise.BML-S1H − high-resolution, compact designThe magnetically coded position and angle measurement systemBML uses the S1H sensor series to provide high-resolution systemsin a robust metal housing.By means of the absolute position detection, the position is im-mediately output even if the supply voltage fails and the system isswitched on again, without a reference run. The particularly compactdesign and use parallel or perpendicular to the tape enables integra-tion even under very tight installation conditions.