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March 2012
Length Gauges
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Length gauges from HEIDENHAIN offer
high accuracy over long measuring ranges.
These sturdily made gauges are available in
application-oriented versions.
They have a wide range of applications in
production metrology, in multipoint
inspection stations, measuring equipment
monitoring, and as position measuring
devices.
This catalog supersedes all previous
editions, which thereby become invalid.
The basis for ordering from HEIDENHAIN
is always the catalog edition valid when
the contract is made.
Standards (ISO, EN, etc.) apply only
where explicitly stated in the catalog.
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Length Gauges Applications and Products
Range of Applications, Application Examples 4
Length Gauges from HEIDENHAIN 6
Length Gauge Overview 8
Technical Features and Mounting Information
Principle of Function 10
Mechanical Design 11
Measuring Accuracy 12
Gauging Force and Plunger Actuation
14 Mounting 16
Specifications Accuracy Measuring range
ACANTO Absolute Length Gauges 2 m 12 mm 18
HEIDENHAIN-CERTOIncremental Length Gauges
0.1 m; 0.03 m* 0.1 m; 0.05 m*
25 mm60 mm
20
Incremental Length Gauges 0.2 m 12 mm25 mm
22
HEIDENHAIN-METRO
Incremental Length Gauges
0.5 m
1 m
60 mm
100 mm
24
HEIDENHAIN-SPECTOIncremental Length Gauges
1 m 12 mm30 mm
26
Length Gauge Accessories
Measuring Contacts, Switch Boxes, Coupling 28
Gauge Stands, Ceramic SuctionPlate, Diaphragm Compressor
For HEIDENHAIN-CERTO 30
Cable-Type Lifter, Gauge Stands for HEIDENHAIN-METRO andHEIDENHAIN-SPECTO
32
Evaluation and Display Units
Digital Readouts 34
Evaluation Electronics 35
Electrical Connection
Interfaces Incremental Signals 11 APP 37
Incremental Signals 1 VPP 38
Incremental SignalsTTL 40
EnDat Absolute Position Values 42
Cables and Connecting Elements 44
General Electrical Information 48
* After linear length-error compensation in the evaluation electronics
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Range of ApplicationsIn Quality Assurance
Metrology and productioncontrol
Incremental length gauges fromHEIDENHAIN play a role in incoming goodsinspection, fast dimension checking duringproduction, statistical process control inproduction or quality assurance, or in anyapplication where fast, reliable and accuratelength measurement is required. Their largemeasuring lengths are a particular advantage:whether the part measures 5 mm or 95 mm,it is measured immediately with one andthe same length gauge.
Whatever the application, HEIDENHAIN
has the appropriate length gauge for therequired accuracy. The HEIDENHAIN-CERTO length gauges offer a very highaccuracy of 0.1 m/ 0.05 m*/ 0.03 m*for extremely precise measurement.Length gauges from the HEIDENHAIN-METRO program have accuracy grades asfine as 0.2 m, while the HEIDENHAIN-SPECTO length gauges, with 1 maccuracy, offer particularly compactdimensions.
* After linear length-error compensation inthe evaluation electronics
Gauge block calibration andmeasuring device inspection
The usual inspection of measuringequipment called for by standards, and theinspection of gauge blocks in particular,necessitate a large number of referencestandard blocks if the comparativemeasurement is performed using inductivelength gauges. The problem is the smallmeasuring range of inductive gauges: theycan measure length differences of only upto 10 m. Incremental length gauges, whichoffer large measuring ranges together withhigh accuracy, greatly simplify the calibrationof measuring devices required to ensure
traceability.
The length gauges of the HEIDENHAIN-CERTO program with measuring ranges of25 mm with 0.1 m/ 0.03 m* accuracyand 60 mm with 0.1 m/ 0.05 m*accuracy are especially well suited for thistask. It permits a significant reduction inthe required number of reference standardblocks, and recalibrating becomes muchsimpler.
Thickness gauging ofsilicon wafers
Inspection of styli
Calibration of gaugeblocks
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5
Multipoint inspectionapparatuses
Multipoint inspection devices require durablelength gauges with small dimensions. Theyshould also have relatively large measuringranges of several millimeters with consistentlinear accuracy in order to simplify theconstruction of inspection devicesforexample by enabling the construction ofone device for several masters. A largemeasuring length also provides benefits inmaster production, because simpler masterscan be used.
Thanks to their small dimensions, the
ACANTO absolute length gauge, like theHEIDENHAIN-SPECTO incremental lengthgauge, are specially designed for multi-pointmeasuring stations. The feature accuracygrades up to 1 m over measuring rangesup to 30 mm. Higher accuracy requirementsup to 0.2 m can be met with similarlycompact HEIDENHAIN-METRO lengthgauges.
Unlike inductive gauges, HEIDENHAIN-SPECTO length gauges provide stablemeasurement over long periodseliminating recalibration.
Position measurement
Incremental length gauges fromHEIDENHAIN are also ideal for positionmeasurement on precision linear slides orX-Y tables. Working with measuringmicroscopes, for example, becomes mucheasier thanks to the digital readout and theflexible datum setting.
Here, length gauges from theHEIDENHAIN-METRO and HEIDENHAIN-SPECTO program come into use with largemeasuring ranges of 30 mm, 60 mm or100 mm at consistently high accuracygrades of 0.5 m or 1 m.
In this application as linear measuringdevice, the length gauges fast installationin accordance with the Abbe measuringprinciple by its clamping shank or planarmounting surface is of special benefit.
Testing station forflatness inspection
Position measurement on an X-Y table for lens mounting
In Production
Tolerance gauging ofsemifinished products
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Length Gauges from HEIDENHAIN
High accuracy
The high accuracy specified forHEIDENHAIN length gauges applies overthe entire measuring length. Whether thepart measures 10 or 100 mm, its actualdimension is always measured with thesame high quality. The high repeatability ofHEIDENHAIN length gauges comes intoplay during comparative measurements,for example in series production.
A number of arguments speak forHEIDENHAIN length gauges. These includenot only their technical features, but alsotheir high quality standard and theworldwide presence of HEIDENHAIN.
Large measuring rangesHEIDENHAIN length gauges are availablewith measuring lengths of 12 mm, 25 mm,30 mm, 60 mm or 100 mm. so that youcan measure very different parts in onemeasuring setup and avoid frequentlychanging setups with expensive gaugeblocks or masters.
Robust designHEIDENHAIN length gauges are built foran industrial environment. They featureconsistently high accuracy over a longperiod of time as well as high thermalstability. They can therefore be used inproduction equipment and machines.
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Wide range of applicationsHEIDENHAIN length gauges are suited for
many applications. Automatic inspectionequipment, manual measuring stations orpositioning equipmentwherever lengths,spacing, thickness, height or linear motionare to be measured, HEIDENHAIN lengthgauges function quickly, reliably andaccurately.
Know-how
The high quality of HEIDENHAIN lengthgauges is no coincidence. HEIDENHAINhas been manufacturing high-accuracyscales for over 70 years, and for manyyears it has developed measuring andtesting devices for length and anglemeasurement for national standardslaboratories. This know-how makesHEIDENHAIN an extraordinarily qualifiedpartner for metrology questions.
Worldwide presenceHEIDENHAIN is represented in allimportant industrial countriesin most ofthem with wholly owned subsidiaries.Sales engineers and service technicianssupport the user on-site with technicalinformation and servicing in the locallanguage.
Absolute position measurementThe ACANTO length gauges operate with
absolute measurement over a range of12 mm and with high repeatability. It'sparticular advantage is that the measuredvalue is available immediately afterswitch-on.
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CT 6000 CT 2500MT 101 MT 60
8
Length Gauge Overview
Accuracy Measuring rangePlunger actuation
Absolute position measurement
2 m ACANTO
By measured object
Pneumatic
Incremental linear measurement
0.1 m 0.05 m
*)
0.03 m*)
HEIDENHAIN-CERTO
By motor
By external coupling
0.2 m HEIDENHAIN-METRO
By cable lifter or
measured object
Pneumatic
0.5 m 1 m
HEIDENHAIN-METRO
By motor
By external coupling
1 m HEIDENHAIN-SPECTO
By measured object
Pneumatic
*) After linear length-error compensation inthe evaluation electronics
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ST 3000 ST 1200MT 2500 MT 1200 AT 1200AT
9
12 mm 25 mm/30 mm
60 mm 100 mm Page
18
AT 1218 EnDat
AT 1217 EnDat
20
CT 2501 11 APP
CT 2502 11 APP
CT 6001 11 APP
CT 6002 11 APP
22
MT 1271TTLMT 1281 1 VPP
MT 1287 1 VPP
MT 2571TTLMT 2581 1 VPP
MT 2587 1 VPP
24
MT 60 M 11 APP
MT 60 K 11 APP
MT 101 M 11 APP
MT 101 K 11 APP
26
ST 1278TTLST 1288 1 VPP
ST 1277TTLST 1287 1 VPP
ST 3078TTLST 3088 1 VPP
ST 3077TTLST 3087 1 VPP
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5m
10
Principle of Function
HEIDENHAIN length gauges arecharacterized by long measuring rangesand consistently high accuracy. The basisfor both is the photoelectrical scanningprinciple.
HEIDENHAIN linear encoders use materialmeasuring standards consisting of absoluteor incremental graduations on substratesof glass or glass ceramic. These measuringstandards permit large measuring ranges,are insensitive to vibration and shock, andhave a defined thermal behavior. Changes inatmospheric pressure or relative humidityhave no influence on the accuracy of themeasuring standardwhich is theprerequisite for the high long-termstability of HEIDENHAIN length gauges.
The masters for these graduations arefabricated on dividing engines developedand built by HEIDENHAIN. High thermalstability during the manufacturing processensures that the graduations have highaccuracy over the measuring length. Themaster graduation is applied to the carrierusing the DIADUR copying processdeveloped by HEIDENHAIN, whichproduces very thin but durable graduationstructures of chromium.
The graduation is photoelectricallyscanned without mechanical contact andtherefore without wear. Light passesthrough the structured scanning reticle andover the scale onto photovoltaic cells. Thephotovoltaic cells produce sinusoidaloutput signals with a small signal period.Interpolation in the subsequent electronicsmakes very small measuring steps into thenanometer range possible. The scanningprinciple, together with the extremely finegraduation lines and their high edgedefinition ensure the quality of the output
signals as well as thesmall position error
within one signal period.This appliesparticularly to HEIDENHAIN length gauges,which use a DIADUR phase grating asmeasuring standard. The interferentialscanning method produces sinusoidalincremental signals with a period of only2 m.
DIADUR phase grating with approx. 0.25 mgrating height
Grating period
Carrier
Reference mark
Incrementalgraduation
DIADUR graduation
Incremental Measuring MethodWith the incremental measuring method,the graduation consists of a periodicgrating structure. The position informationis obtained by counting the individualincrements (measuring steps) from somepoint of origin. Since an absolute referenceis required to ascertain positions, themeasuring standard is provided with anadditional track that bears a referencemark. The absolute position on the scale,established by the reference mark, is gatedwith exactly one signal period.The reference mark must therefore bescanned to establish an absolute referenceor to find the last selected datum.
Absolute measuring methodWith the absolute measuring method, theposition value is available from the encoderimmediately upon switch-on and can becalled at any time by the subsequentelectronics. There is no need to move theaxes to find the reference position. Theabsolute position information is read fromthe graduated disk, which is formed froma serial absolute code structure. A separateincremental track is interpolated for theposition value and at the same timedepending on the interface versionisused to generate an optional incrementalsignal.
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Mechanical Design
HEIDENHAIN length gauges functionaccording to the Abbe measuring principle,i.e. the measuring standard and theplunger are exactly aligned. All componentscomprising the measuring loop, such asthe measuring standard, plunger, holderand scanning head are designed in termsof their mechanical and thermal stability forthe highest possible accuracy of the lengthgauge.
HEIDENHAIN length gauges have a definedthermal behavior. Since temperaturevariations during measurement can resultin changes in the measuring loop,HEIDENHAIN uses special materials withlow coefficients of expansion
thermfor
the components of the measuring loop,for example in the CERTO length gauges.The scale is manufactured of Zerodur(therm 0 K
1), and the plunger and holder
are of Invar (therm 1 106
K1
). Thismakes it possible to guarantee its highmeasuring accuracy over a relatively largetemperature range.
Length gauges from HEIDENHAIN featurea sturdy design. Even high vibration andshock loads have no negative influence onthe accuracy.
The ball-bush guided plunger tolerateshigh radial forces and moves with very lowfriction. It has an M2.5 thread to holdmeasuring contacts.
Expendable partsHEIDENHAIN length gauges containcomponents that are subject to wear,depending on the application andmanipulation. These include in particularthe following parts:
LED light sourceGuideway (tested for at least 5 million
strokes*)Cable link for CT, MT 60 and MT 101(tested for at least 1 million strokes*)Scraper ringsRubber bellows for AT and ST 1200
* With CT, MT 60 M and MT 101 M onlywith actuation by switch box
Layout of ST 1200
Connecting cable
Measuring standard
Scanning unit with light source,photocells and scanningelectronics
Ball-bush guide
Plunger
Rubber bellows
Measuring contact
Layout of CT 6000MT 60
Measuring standard(scale)
Holder
Scanning unit with light sourceand photovoltaic cells
Ball-bush guide
Plunger
Measuring contact
DIADUR is a registered trademark ofDR. JOHANNES HEIDENHAIN GmbH,Traunreut, Germany.Zeroduris a registered trademark ofSchott-Glaswerke, Mainz, Germany.
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Measuring Accuracy
The accuracy of position measurementwith length gauges is mainly determinedby the following factors:
the quality of the graduation,the quality of the scanning process,the quality of the signal processingelectronics,the error from the scale guidewayrelative to the scanning unit.
A distinction is made between positionerror over relatively large paths oftraversefor example the entiremeasuring rangeand that within onesignal period.
Position error over the measuring rangeLength gauge accuracy is specified assystem accuracy, which is defined asfollows:The extreme values of thetotal error
Fwith reference to their mean valuelie
over the entire measuring length within the
system accuracy a. They are measured
during the final inspection and documented
in the calibration chart.
Position error within one signal periodThe position error u within one signalperiod is determined by the signal period ofthe length gauge, as well as the quality ofthe graduation and the scanning thereof.At any position over the entire measuringlength, it does not exceed approx. 1 % ofthe signal period.
The smaller the signal period, the smallerthe position error within one signal period.
In the calibration chart of the HEIDENHAIN-CERTO, this position error within one signalperiod is shown as a tolerance band.
Signal period of thescanning signals
Max. position error u withinone signal period (approx.)
CT 2500CT 6000
2 m 0.02 m
MT 1200MT 2500
2 m 0.02 m
MT 60MT 101
10 m 0.1 m
ST 1200ST 3000
20 m 0.2 m
AT 1200 188.4 m 0.7 m
Position error a over the measuring length ML
Positionerrorf
Position error withinone signal period
Positionf
Position error u within one signal period
Signal period360 elec.
Signallevelf
Positionerrorf
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All HEIDENHAIN length gauges areinspected before shipping for accuracy andproper function.
They are calibrated for accuracy duringretraction and extension of the plunger.For the HEIDENHAIN-CERTO, the numberof measuring positions is selected toascertain very exactly not only the long-rangeerror, but also the position error within onesignal period.
The manufacturers inspection certificateconfirms the specified system accuracyof each length gauge. The calibrationstandards ensure the traceabilityasrequired by EN ISO 9001to recognizednational or international standards.
For the HEIDENHAIN-METRO andHEIDENHAIN CERTO series, a calibrationchart documents the position error overthe measuring range. It also shows themeasuring step and the measuringuncertainty of the calibration measurement.
For the HEIDENHAIN-METRO the calibrationchart shows the mean value of one forwardand one backward measuring stroke.
The HEIDENHAIN-CERTO is represented inthe calibration chart as the envelope curveof the measured error. The HEIDENHAIN-CERTO length gauges are supplied withtwo calibration charts, each for differentoperating attitudes.
Example
Temperature rangeThe length gauges are inspected at areference temperature of 20 C. Thesystem accuracy given in the calibrationchart applies at this temperature.
The operating temperature indicates theambient temperature limits between which
the length gauges will function properly.The storage temperature range of 20 Cto 60 C applies for the device in itspackaging.
Operating attitude for calibration chart 2
Operating attitude for calibration chart 1
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Gauging ForcePlunger Actuation
Gauging forceGauging force is the force that the plungerexercises on the measured object. Anexcessively large gauging force can causedeformation of the measuring contact andthe measured object. If the gauging forceis too small, an existing dust film or otherobstacle may prevent the plunger fromfully contacting the measured object. Thegauging force depends on the type ofplunger actuation.
Plunger actuation by springFor the AT 1218, MT 12x1, MT 25x1, ST 12x8and ST 30x8, the integral spring extends theplunger to the measuring position and appliesthe gauging force. In its resting position,the plunger is extended. The gauging forcedepends on the following criteria:
The operating attitudeThe plunger position, because the gaugingforce changes over the measuring rangeThe measuring direction, i.e., whetherthe gauge measures with extending orretracting plunger
In the diagrams, the measuring force isshown over the measuring range for aretracting and extending plunger in ahorizontal operating attitude.
Plunger actuation by measured objectThe complete length gauge is movedrelative to the measured object. Themeasurement is made with retractingplunger.
Plunger actuation via cable-type lifter(MT 12x1, MT 25x1)Through a cable mechanism, the plunger isretracted by hand and then extended ontothe measured object. The measurement ismade with extending plunger.
The diagrams apply for the horizontaloperating attitude.The following
compensation values are to be taken intoaccount for other operating attitudes.
Model Operating attitudevertically
Upward Downward
AT 121x 0.12 N + 0.12 N
MT 12xx 0.13 N + 0.13 N
MT 25x1 0.17 N + 0.17 N
MT 2587 0.19 N + 0.19 N
ST 12x7 0.07 N + 0.07 N
ST 12x8 0.08 N + 0.08 N
ST 30xx 0.11 N + 0.11 N
Gaugingforce[N]f
Distance [mm]f
MT 12x1 extendingMT 12x1 retractingST 12x8 extendingST 12x8 retractingAT 12x8 extendingAT 12x8 retracting
Gaugingforce[N]f
Distance [mm]f
MT 25x1 extendingMT 25x1 retractingST 30x8 extendingST 30x8 retracting
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Pneumatic plunger actuation
The pneumatically actuated plungers of the
AT 1217, MT 1287, MT 2587, ST 12x7 and
ST 30x7 length gauges are extended by
the application of compressed air.
When the air connection is ventilated, the
integral spring retracts the plunger. to a
protected resting position within the
housing.
The gauging force can be adjusted to themeasuring task through the level of air
pressure. At constant pressure, it depends
on the operating attitude and the plunger
position.
The diagrams show the respective
measuring force for a horizontal operating
attitude depending on the compressed air
applied with the plunger extending and
retracting fully. These are approximate
values that are subject to changes due to
tolerances and depend on seal wear.
Motorized plunger actuation
The CT 2501, CT 6001, MT 60 M and
MT 101 M length gauges feature an integral
motor that moves the plunger. It is operated
through the switch box either by push button
or over the connection for external actuation.
The plungers of the CT 2501, CT 6001, and
MT 60 M length gauges must not be moved
by hand if the switch box is connected.
The gauging force of the CT 2501, CT 6001,and MT 60 M motorized length gauges is
adjustable in three stages through the
switch box. The force remains constant
over the measuring range but depends on
the operating attitude.
Regardless of the operating attitude
whether it measures vertically downward(with the SG 101 V switchbox) or horizontally
(with the SG 101 H switch box)the
MT 101 M exercises a constant gauging
force.
Switch box and power adapter (only with
MT101 M) must be ordered separately.
External plunger actuation by couplingFor the CT 2502, CT 6002, MT 60 K,
MT 101 K and special versions without
spring of the MT 1200 and MT 2500, the
plunger is freely movable. For position
measurement, the plunger is connected by
a coupling with a moving machine element.
The force needed to move the plunger is
specified as the required moving force.It depends on the operating attitude.
NoteThe compressed air introduced directly
into the length gauges must be properly
conditioned and must comply with the
following quality classes as per ISO 8573-1(1995 edition):
Solid contaminant: Class 1
(max. particle size 0.1 m and max.
particle density 0.1 mg/m3
at 1 105
Pa)
Total oil content: Class 1
(max. oil concentration 0.01 mg/m3
at 1 105
Pa)
Maximum pressure dew point: Class 4,
but with reference conditions of
+3 C at 2 105
Pa
HEIDENHAIN offers the DA 400Compressed Air Unit for purifyingcompressed air.
For more information, ask for our DA 400
Product Information sheet.
Gaugingforce[N]f
Pressure [bars]f
MT 12x7 retracted
MT 12x7 extended
ST 12x7 retractedST 12x7 extended
AT 12x7 retractedAT 12x7 extended
Gaugingforce[N]f
Pressure [bars]f
MT 2587 retracted
MT 2587 extended
ST 30x7 retractedST 30x7 extended
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Mounting
In addition to the length gauge itself, themechanical design of the measuring setupalso plays a role in defining the quality ofmeasurement.
Abbe principleHEIDENHAIN length gauges enable you towork according to the Abbe measuringprinciple: The measured object and scalemust be in alignment to avoid additionalmeasuring error.
Measuring loopAll components included in the measuringloop such as the holder for the measuredobject, the gauge stand with holder, andthe length gauge itself influence the resultof measurement. Expansion or deformationof the measuring setup through mechanicalor thermal influences adds directly to theerror.
Mechanical designA stable measuring assembly must beensured. Long lateral elements within themeasuring loop are to be avoided.HEIDENHAIN offers a stable gauge standas an accessory.
The force resulting from the measurement
must not cause any measurabledeformation of the measuring loop.Incremental length gauges fromHEIDENHAIN operate with small gaugingforce and have very little influence on themeasuring setup.
Thermal behaviorTemperature variations during measurementcause changes in length or deformation ofthe measuring setup. After a change intemperature of 5 K, a steel bar of 200 mmlength expands by 10 m.
Length changes resulting from a uniformdeviation from the reference temperaturecan largely be compensated by resettingthe datum on the measuring plate or amaster; only the expansion of the scaleand measured object go into the result ofmeasurement. Temperature changes duringmeasurement cannot be ascertainedmathematically.
For critical components, HEIDENHAINtherefore uses special materials with lowcoefficients of expansion, such as arefound in the HEIDENHAIN-CERTO gauge
stand. This makes it possible to guaranteethe high accuracy of HEIDENHAIN-CERTOeven at ambient temperatures of 19 to 21 Cand variations of 0.1 K duringmeasurement.
Thermally induced length change
Expansion of the measuring loop componentsas a result of heat
AccelerationShock and vibration of any kind is to beavoided during measurement so as not toimpair the high accuracy of the lengthgauge.
The maximum values given in thespecifications apply to the effect of externalacceleration on the length gauge. Theydescribe only the mechanical stability ofthe length gauge, and imply no guarantee
of function or accuracy.
In the length gauge itself, uncheckedextension of the spring-driven or non-coupledmoving plunger can cause high accelerationonto the measured object or measuring platesurface. For the MT 1200 and MT 2500series length gauges, use the cable-typelifter whenever possible (see Accessories).The cable lifter features adjustable pneumaticdamping to limit the extension velocity toan uncritical value.
The measuring loop:All components involved in themeasuring assembly, includingthe length gauge
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+
+
CT 6000
MT 60
MT 101
CT 2500
+
17
FasteningThe CT 6000, MT 60 and MT 101 lengthgauges are fastened by two screws onto aplane surface. This ensures a mechanicallystable installation of even these largelength gauges. Special holders are availablefor fastening the MT 60 and MT 101 to theMS 100 gauge stand for the HEIDENHAIN-METRO (see Accessories).
The CT 2500 is mounted by its standardclamping shank with 16h8 diameter. Aholder is available for fastening theHEIDENHAIN-CERTO to the gauge stand(see Accessories).
The AT, ST, MT 1200 and MT 2500 lengthgauges feature a standard clamping shankwith 8h6 diameter. These HEIDENHAINlength gauges can therefore easily be usedwith existing measuring fixtures and stands.
As an accessory, HEIDENHAIN offers aspecial clamping sleeve and screw. Itfacilitates fastening the length gaugesecurely without overstressing theclamping shank.Clamping sleeve ID 386811-01
Operating attitude for HEIDENHAIN-CERTOThe HEIDENHAIN-CERTO can be operatedat any attitude. However, the mountingposition with horizontal length gauge andupward facing mounting surface should beavoided because in such a case noguarantee can be made for accuracy.
Orthogonal mountingThe length gauge is to be mounted so thatits plunger is exactly orthogonal to themeasured object or the surface on which itrests. Deviations result in measuring error.The accessory HEIDENHAIN gauge standswith holders for an 8 mm clamping shankensure orthogonal mounting. Lengthgauges that provide planar mountingsurfaces are to be adjusted in the direction
parallel to the mounting surface (Y) to beperpendicular to the measuring plate. Aquick and reliable adjustment is possiblewith the aid of a gauge block or a parallelblock. The perpendicularity to the measuringtable (X) is already ensured by the gaugestand.
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AT 1218
AT 1217
18
ACANTOAbsolute Length Gauges with EnDat Interface
Very compact dimensionsProtected from splash water
Thanks to their small dimensions, theACANTO length gauges are the product ofchoice for multipoint inspection apparatusand testing equipment. Absolute positionmeasurement provides the measuredvalues immediately after switch-on. This isparticularly favorable on measuring stationswith numerous measuring points: as themeasured value is already generated in thelength gauge there is no need for thecounting electronics for each measuringpoint that would otherwise be necessary.
Plunger actuationThe AT 1218 length gauge features aspring-tensioned plunger that is extendedat rest.
In the pneumatic length gauges AT 1217,the plunger is retracted to its rest positionby the integral spring. It is extended to themeasuring position by application ofcompressed air.
MountingThe ACANTO length gauges are fastenedby their 8h6 standard clamping shank.
InterfaceThe ACANTO length gauges have a
bidirectional serial EnDat interface fortransmission of the absolute positionvalues and internal encoder information.
Mechanical Data
Plunger actuationPosition of plunger at rest
Measuring standard
System accuracy
Repeatability
Measuring range
Gauging force
Compressed air
Mech. permissible traversing speed
Radial force
Operating attitude
Vibration 55 Hz to 2 000 HzShock 11 ms
Protection EN 60 529
Operating temperature
Fastening
Weight without cable
Electrical Data
Absolute position values
Ordering designation
Resolution
Processing time
Electrical connection
Cable length
Power supply
s = Beginning of measuring length
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AT 1200
19
AT 1218 AT 1217
By measured objectExtended
PneumaticRetracted
DIADUR grating on glass; grating period 188.4 m
2 m
0.1 m according to DIN 32876 (in the cyclical, thermally balanced operating condition)
12 mm
See Gauging ForcePlunger Actuation
1.8 bars
60 m/min
0.5 N (mechanically permissible)
Any
100 m/s2 (EN 60 068-2-6) 500 m/s2 (EN 60 068-2-27)
IP 67 IP 64 (IP 67 with sealing air)
10 to 40 C; reference temperature 20 C
Clamping shank 8h6
80 g
EnDat
EnDat 2.2
EnDat 22
23 nm
5 s
M12 flange socket, axial
100 m with HEIDENHAIN cable
3.6 to 14 V DC/< 150 mA at 5 V
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CT 2500
CT 6000
20
HEIDENHAIN-CERTOLength Gauges with 0.1 m/ 0.05 m*/ 0.03 m* Accuracy
For Very High AccuracyFor inspection of measuring equipment and gauge blocks
HEIDENHAIN-CERTO length gaugesfeature a large measuring range, providehigh linear accuracy and offer resolution inthe nanometer range. They are usedpredominantly for production qualitycontrol of high-precision parts and for themonitoring and calibration of referencestandards. Length gauges reduce thenumber of working standards required tocalibrate gauge blocks.
AccuracyThe total error of HEIDENHAIN-CERTOlength gauges lies within 0.1 m. Afterlinear length error compensation in theevaluation electronics, of the ND 28x digitalreadout, for example, HEIDENHAINguarantees accuracy of 0.03 m for theCT 2500 and 0.05 m for the CT 6000.These accuracy grades apply over theentire measuring range at ambienttemperatures between 19 C and 21 Cand with a temperature variation of 0.1 Kduring measurements using the CS 200gauge stand for the HEIDENHAIN-CERTO.
Plunger actuationThe plunger of the CT 2501 and CT 6001is extended and retracted by an integralmotor. It can be actuated by the associated
switch box, which can also be controlled byexternal signal.
The CT 2502 and CT 6002 have no plungerdrive. The freely movable plunger isconnected by a separate coupling with themoving machine element.
MountingThe CT 2500 length gauge is fastened byits 16 mm diameter clamping shank. TheCT 6000 is fastened with two screws on aplane surface. The CS 200 gauge stand(see Accessories) was conceived specially
for HEIDENHAIN-CERTO length gauges.It fulfills the requirements of high precisionmeasurement with respect to thermalbehavior, stability, orthogonality and flatnessof the measuring plate surface. A specialholder is available as an accessory formounting the CT 2500.
Output signalsThe HEIDENHAIN-CERTO length gaugesprovide 11 APP current signals forHEIDENHAIN subsequent electronics.
* After linear length-error compensation in
the evaluation electronics
r = Reference mark position
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CT 2500
CT 6000
21
Specifications CT 2501CT 6001
CT 2502CT 6002
Plunger actuation By motor Separate coupling withmoving machine part
Measuring standard DIADUR phase grating on Zerodur glass ceramicGrating period 4 m
System accuracyat 19 to 21 C CT 2500
CT 6000
0.1 m without compensation; 0.03 m after linear length error compensation 0.05 m after linear length error compensation
Recommd. measuring step 0.01 m/0.005 m (5 nm) with ND 28x
Reference mark Approx. 1.7 mm below upper stop
Measuring range CT 2500CT 6000
25 mm60 mm
Gauging forceVertically downwardVertically upwardHorizontal
1 N/1.25 N/1.75 N / /0.75 N /0.75 N/1.25 N
Required moving force 0.1 N to 0.6 N (dependingon operating attitude)
Radial force 0.5 N (mechanically permissible)
Operating attitude Any required (for preferred operating attitude see page 13)
Vibration 55 Hz to 2 000 HzShock 11 ms
100 m/s2 (EN 60 068-2-6) 1 000 m/s2 (EN 60 068-2-27)
Protection EN 60 529 IP 50
Operating temperature 10 to 40 C; reference temperature 20 C
Fastening CT 2500CT 6000
Clamping shank 16h8Plane surface
Weight CT 2500without cable CT 6000
520 g700 g
480 g640 g
Incremental signals 11 APP; signal period 2 m
Measuring velocity 24 m/min (depending on the subsequent electronics) 12 m/min with the ND 28x display unit
Electrical connection* Cable, 1.5 m, with 15-pin D-sub connectorCable, 1.5 m, with 9-pin M23 connector
Interface electronics are integrated in connector.
Cable length 30 m with HEIDENHAIN cable
Power supply 5 V DC 5 %/< 180 mA 5 V DC 5 %/< 120 mA
Required accessories* For CT 2501 For CT 6001
Switch box SG 25 MID 317436-01
SG 60 MID 317436-02
* Please select when ordering
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MT 1200
MT 2500
MT 1287MT 2587
22
HEIDENHAIN-METROLength Gauges with 0.2 m Accuracy
High repeatabilityPlunger actuation by cable release, by the workpiece or pneumatically
With their high system accuracy and smallsignal period, the HEIDENHAIN-METROMT 1200 and MT 2500 length gauges areideal for precision measuring stations andtesting equipment. They feature ball-bushguided plungers and therefore permit highradial forces.
Plunger actuationThe length gauges of the MT 12x1 andMT 25x1 series feature a spring-tensionedplunger that is extended at rest. In aspecial version without spring it exercisesparticularly low force on the measuredobject.
In the pneumatic length gauges MT 1287and MT 2587, the plunger is retracted toits rest position by the integral spring. It isextended to the measuring position byapplication of compressed air.
MountingThe MT 1200 and MT 2500 length gaugesare fastened by their 8h6 standard clampingshank. A mounting bracket is available asan accessory to mount the length gaugesto plane surfaces or to the MS 200 fromHEIDENHAIN.
Output signalsThe MT 1200 and MT 2500 length gaugesare available with various output signals.
The MT 128x and MT 258x length gaugesprovide sinusoidal voltage signals with1 VPP levels, which permit high interpolation.
The MT 1271 and MT 2571 featureintegrated digitizing and interpolationelectronics with 5-fold or 10-fold interpolation(as ordered) and square-wave signals inTTL levels.
r = Reference mark positions = Beginning of measuring length = Air connection for 2 mm tube
MT 12x1 MT 1287
L1 18,5 22,0
L2 10,1 6,2
L3 8,1 4,2
MT 25x1 MT 2587
L1 37,0 41,0
L2 10,1 6,2
L3 8,1 4,2
Mechanical Data
Plunger actuationPosition of plunger at rest
Measuring standard
System accuracy
Reference mark
Measuring range
Gauging force
Version without springVertically downward
Compressed air
Radial force
Operating attitude
Vibration 55 Hz to 2 000 HzShock 11 ms
Protection EN 60 529
Operating temperature
Fastening
Weight without cable
Electrical DataFor length gauges
Incremental signals*Signal period
Recommended measuring step
Mech. permissible traversing speed
Edge separation a at scanning frequency*/traverse speed
200 kHz 24 m/min100 kHz 12 m/min50 kHz 6 m/min25 kHz 3 m/min
Electrical connection*(Interface electronics integrated in connector)
Cable length
Power supply
* Please select when ordering
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MT 1200
MT 2500
23
MT 1271TTLMT 1281 1 VPP
MT 2571TTLMT 2581 1 VPP
MT 1287 1 VPP MT 2587 1 VPP
By cable or measured objectExtended
PneumaticRetracted
DIADUR phase grating on Zerodur glass ceramic; grating period 4 m
0.2 m
Approx. 1.7 mm below upper stop
12 mm 25 mm 12 mm 25 mm
See Gauging ForcePlunger Actuation
0.13 N 0.17 N
1.4 bars
0.8 N (mechanically permissible)
Any; Version without spring:Vertically downward
100 m/s2 (EN 60 068-2-6) 1 000 m/s2 (EN 60 068-2-27)
IP 50 IP 64 (with sealing air)
10 to 40 C; reference temperature 20 C
Clamping shank 8h6
100 g 180 g 110 g 190 g
TTLMT 1271
MT 2571
1 VPPMT 128x
MT 258x
TTL x 50.4 m
TTL x 100.2 m
1 VPP2 m
0.1 m1) 0.05 m1) 0.1 m/0.05 m
30 m/min
0.23 s 0.48 s 0.98 s
0.23 s 0.48 s 0.98 s
Cable, 1.5 m, with 15-pin D-sub connector Cable 1.5 m withD-sub connector, 15-pin
M23 connector, 12 pin
30 m with HEIDENHAIN cable
5 V DC 5 %/< 160 mA (without load) 5 V DC 5 %/< 130 mA
1) After 4-fold evaluation
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MT 60
MT 101
24
HEIDENHAIN-METROLength Gauges with 0.5 m/ 1 m Accuracy
Large measuring rangesFor dimensional and positional measurement
Large measuring ranges together withtheir high accuracy make the MT 60 andMT 101 HEIDENHAIN-METRO lengthgauges attractive for incoming inspection,production monitoring, quality control, oranywhere parts with very differentdimensions are measured. But they arealso easy to mount as highly accurateposition encoders, for example on slidingdevices or X-Y tables.
Plunger actuationM version length gauges feature anintegral motor that retracts and extendsthe plunger. While the MT 101 M operatesat a constant gauging force, the MT 60 Mallows you to select from three gaugingforce levels.
K version gauges have no integral plungeractuation. The plunger is freely movable.It can be connected to moving elementssuch as linear slides and X-Y table by acoupling (see Accessories).
MountingThe length gauges are mounted onto aflat surface by two screws. The M versionscan also be mounted in the MS 100 andMS 200 gauge stands.
Output signalsThe MT 60 and MT 101 provide 11 APP current signals forHEIDENHAIN subsequent electronics.
r = Reference mark position
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MT 60 M
MT 101 M
25
Specifications MT 60 MMT 60 K
MT 101 MMT 101 K
Plunger MT xx Mactuation MT xx K
By motorVia separate coupling with moving machine part
Measuring standard DIADUR grating on silica glass; grating period 10 m
System accuracy 0.5 m 1 m
Recommd. measuring step 1 m to 0.1 m
Reference mark Approx. 1.7 mm from top Approx. 10 mm from top
Measuring range 60 mm 100 mm
Gauging forceVertically downwardVertically upwardHorizontal
With MT 60 M1 N/1.25 N/1.75 N / /0.75 N /0.75 N/1.25 N
With MT 101 M0.7 N with SG 101 V0.7 N with SG 101 H
Required moving forcewith MT xx K
0.1 to 0.6 N (depends onoperating attitude)
0.5 to 2 N (depends onoperating attitude)
Radial force1)
0.5 N 2 N
Operating MT xx Mattitude
MT xx K
Any
Any
Vertically downward withSG 101 VHorizontal with SG 101 HAny
Vibration 55 Hz to 2 000 HzShock 11 ms
100 m/s2 (EN 60 068-2-6) 1 000 m/s2 (EN 60 068-2-27)
Protection EN 60 529 IP 50
Operating temperature 10 to 40 C; reference temperature 20 C
Fastening Plane surface
Weight MT xx Mwithout cable MT xx K
700 g600 g
1400 g1200 g
Incremental signals 11 APP; signal period 10 m
Measuring velocity2) 18 m/min 60 m/min
Electrical connection*
Cable length
Cable, 1.5 m, with 15-pin D-sub connector;Cable 1.5 m with 9-pin M23 connector (male); 30 m with HEIDENHAIN cable
Power MT xx Msupply MT xx K Switch box
5 V DC 5 %/< 120 mA5 V DC 5 %/< 70 mA
5 V DC 5 %/< 70 mA5 V DC 5 %/< 70 mAVia power adapter
Required accessories* For MT 60 M For MT 101 M
Switch box SG 60 M Vertical position: SG 101 VHorizontal position: SG 101 H
Power supply unit100 V AC to 240 V AC
ID 648029-01
* Please select when ordering2)
depending on the subsequent electronics1) Mechanically permissible
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ST 12x7ST 30x7
26
HEIDENHAIN-SPECTOLength Gauges with 1 m Accuracy
Very compact dimensionsSplash-proof
Thanks to their very small dimensions,the HEIDENHAIN-SPECTO length gaugesare the product of choice for multipointinspection apparatus and testing equipment.
Plunger actuationThe length gauges of the ST 12x8 andST 30x8 series feature a spring-tensionedplunger that is extended at rest.
In the pneumatic length gauges ST 12x7and ST 30x7 the plunger is retracted to itsrest position by the integral spring. It isextended to the measuring position byapplication of compressed air.
MountingThe HEIDENHAIN-SPECTO length gaugesare fastened by their 8h6 standardclamping shank.
Output signalsThe HEIDENHAIN-SPECTO length gaugesare available with various output signals.
The ST 128x and ST 308x length gaugesprovide sinusoidal voltage signals with1 VPP levels, which permit high interpolation.
The ST 127x and ST 307x feature integrated
digitizing and interpolation electronics with5-fold or 10-fold interpolation (as ordered).They are transmitted as square-wave signalsin TTL levels.
Mechanical Data
Plunger actuationPosition of plunger at rest
Measuring standard
System accuracy
Reference mark
Measuring range
Gauging force
Compressed air
Radial force
Operating attitude
Vibration 55 Hz to 2 000 HzShock 11 ms
Protection EN 60 529
Operating temperature
Fastening
Weight without cable
Electrical DataFor length gauges
Incremental signals*Signal period
Recommended measuring step
Mech. permissible traversing speed
Edge separation a atscanning frequency*/traverse speed
100 kHz 72 m/min2)
50 kHz 60 m/min25 kHz 30 m/min
Electrical connection*
Cable outlet*
Cable length
Power supply
* Please select when orderingr = Reference mark positions = Beginning of measuring length
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ST 1200
ST 3000
27
ST 1278TTLST 1288 1 VPP
ST 3078TTLST 3088 1 VPP
ST 1277TTLST 1287 1 VPP
ST 3077TTLST 3087 1 VPP
By measured objectExtended
PneumaticRetracted
DIADUR grating on glass; grating period 20 m
1 m
Approx. 5 mm below upper stop
12 mm 30 mm 12 mm 30 mm
See Gauging ForcePlunger Actuation
2.5 bars
0.8 N (mechanically permissible)
Any
100 m/s2 (EN 60 068-2-6) 1 000 m/s2 (EN 60 068-2-27)
IP 64 (for connecting elements see Connecting Elements and Cables)
10 to 40 C; reference temperature 20 C
Clamping shank 8h6
40 g 50 g 40 g 50 g
TTLST 127x
ST 307x
1 VPPST 128x
ST 308x
TTL x 54 m
TTL x 102 m
1 VPP20 m
1 m1)
0.5 m1)
1 m/0.5 m
72 m/min
0.48 s 0.98 s 1.98 s
0.23 s 0.48 s 0.98 s
Cable, 1.5 m, with 15-pin D-sub connector(interface electronics integrated)
Cable 1.5 m withD-sub connector, 15-pinM23 connector, 12 pin
Axial or radial
30 m with HEIDENHAIN cable
5 V DC 10 %/< 230 mA (without load) 5 V DC 10 %/< 90 mA
1) After 4-fold evaluation2)
Mechanically limited
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AccessoriesMeasuring Contacts
Ball-type contact
Steel ID 202504-01Carbide ID 202504-02Ruby ID 202504-03
Domed contact
Carbide ID 229232-01
Flat contact
Steel ID 270922-01Carbide ID 202506-01
Pin-type contact
Steel ID 202505-01
Knife-edge contact
Steel ID 202503-01
Roller contact, steelFor a low-friction contact with moving surfaces
Crowned ID 202502-03Cylindrical ID 202502-04
Adjustable contact, carbideFor exact parallel alignment to the measuring plate surface
Flat ID 202507-01Knife-edged ID 202508-01
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29
Switch Boxes, Coupling
Switch boxes for CT 2501, CT 6001,MT 60 M, MT 101 MSwitch boxes are required for lengthgauges with motorized plunger actuation.The plunger is controlled through two pushbuttons or by external signal. The gaugingforce is adjustable at the SG 25 M andSG 60 M switch boxes in three stages.
SG 25 MID 317436-01
SG 60 MID 317436-02
SG 101V1)
For the MT 101 M in vertical operationID 361140-01
SG 101 H1)
For the MT 101 M in horizontal operationID 361140-02
Connector (female) 3-pinFor external operation of the switch boxID 340646-05
1)Separate power supply required
Power adapter for SG 101V/HAn adapter connected to the switch boxpowers the MT 101 M.
Voltage range 100 to 240 V ACExchangeable plug adapter (U.S. and Euroconnectors included in delivery)
ID 648029-01
CouplingFor connecting the plunger of the lengthgauge (specifically for the MT 60 K,MT 101 K, CT 2502 and CT 6002) to amoving machine element
ID 206310-01
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Accessories for HEIDENHAIN-CERTOGauge Stand
Holder for CS 200For the CT 2501 with 16 mm clampingshank
ID 324391-01
No chips or flaws
CS 200 gauge standFor length gauges CT 2501*
CT 6001
ID 221310-01
Overall height 349 mmBase 250 mmColumn 58 mmWeight 15 kg
*) With special holder
The flatness of the CS 200 is determinedwith the aid of a Fizeau interferometer.
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31
Ceramic Suction Plate, Diaphragm Pump
Ceramic suction plateWear-resistant working surface with highsurface quality specifically for inspectinggauge blocks
ID 223100-01
The gauge block (class 1 or 2)or any otherobject with a plane surfaceis drawn bysuction onto the top of the ceramic plate.The ceramic plate is likewise drawn to thegranite base and held in place throughnegative gauge pressure.
Parts for connecting the ceramic suctionplate with the diaphragm pump are amongthe items supplied:
Pressure tubing 3 mT-jointConnecting piece
Diaphragm pumpSource of suction for drawing the measuredobject and ceramic suction plate
Power consumption 20 WWeight 2.3 kgLine voltage 230 V AC/50 HzID 754220-01
Line voltage 115 V AC/60 HzID 754220-02
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Accessories for ACANTO, HEIDENHAIN-METRO andHEIDENHAIN-SPECTOCable-Type Lifter, Gauge Stands
Cable lifterFor manual plunger actuation of MT 1200and MT 2500.
The integral pneumatic damping reducesthe plunger extension speed to preventrebounding, for example on very hardmaterials.
ID 257790-01
MS 200 gauge standFor length gauges AT
1)
ST1)
MT 12001)
MT 25001)
MT 60 MMT 101 M
ID 244154-01
Overall height 346 mmBase 250 mmColumn 58 mmWeight 18 kg
1)With special holder
Holder for MS 200For mounting the length gaugeswith 8 mm clamping shank,e.g. AT, ST, MT 1200, MT 2500
ID 324391-02
Clamping sleeveFor length gauges AT, ST
MT 1200MT 2500
For fixing the length gauge reliably withoutoverloading the 8h6 clamping shank.Consisting of:Sleeve, clamping screw
ID 386811-01 (1 unit per package)ID 386811-02 (10 units per package)
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33
MS 45 gauge standFor length gauges AT,
STMT 1200MT 2500
ID 202162-02
Overall height 196.5 mmBase 49 mmColumn 22 mmWeight 2.2 kg
MS 100 gauge standFor length gauges AT,
STMT 1200MT 2500MT 60 M
1)
MT 101 M1)
ID 202164-02
Overall height 385 mmMeasuring plate 100 mm x 115 mmColumn 50 mmWeight 18 kg
1)With special holder
Holder for MS 100
For mounting the MT 60 MID 207479-01
For mounting the MT 101 MID 206260-01
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ND 200Digital readout for one axisHEIDENHAIN encoders with 11 APP or1 VPP signals and EnDat 2.2 interface canbe connected to the digital readouts of theND 200 series. The ND 280 readout providesthe basic functions for simple measuringtasks. The ND 287 also features otherfunctions such as sorting and tolerance checkmode, minimum/maximum value storage,measurement series storage. It calculatesthe mean value and standard deviationsand creates histograms and control charts.The ND 287 permits optional connection ofa second encoder for sum/differencemeasurement or of an analog sensor.
The ND 28x units have serial interfaces formeasured value transfer.
For more information, see the DigitalReadouts/Linear Encodersbrochure.
ND 280 ND 287
Encoder input1)
1 x 11 APP, 1 VPP or EnDat 2.2
Connection D-sub, 15-pin, female
Input frequency 1 VPP: 500 kHz; 11 APP: 100 kHz
Signal subdivision Up to 4 096-fold (adjustable)
Display step (adjustable) Linear axis: 0.5 to 0.002 mAngular axis: 0.5 to 0.000 01 and/or 000000.1
Functions REF reference mark evaluation2 datums
Sorting and tolerance checkingMeasurement series(max. 10 000 measured values)Minimum/maximum value storageStatistics functionsSum/difference display (option)
Switching I/O Yes
Interface RS-232-C/V.24; USB (UART); Ethernet (option for ND 287)
1)Automatic detection of interface
Digital Readouts
ND 2100 G GAGE-CHEK
Input signals* 1 VPP TTL EnDat 2.2
Encoder inputs D-sub (15-pin) male D-sub (9-pin) male M12 flange socket(8-pin) female
Number of inputs* ND 2104 G:4ND 2108 G:8
Signal evaluation/subdivision 10-fold 4-fold
Display 5.7 color flat-panel display
Functions Part programming of up to 100 partsSorting and tolerance checking using tolerance andwarning limitsMeasurement series with MIN/MAX displayMathematical and trigonometric formulas, logicaloperationsFunctions for statistical process control (SPC)Graphic display (measurement results, distribution)Data storage of values and formulas
Switching I/O Yes
Interface RS-232-C/V.24USB
ND 2100 G GAGE-CHEKDigital ReadoutsThe ND 2100 G GAGE-CHEK readouts areversatile metrology displays for measuringand inspection tasks in manufacturing andquality assurance. With inputs for up toeight encoders, they are predestined formultipoint measurements from simplepass/fail detection up to complex SPCevaluation.
For more information see Digital Readoutsfor Metrology Applicationsbrochure
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35
EIB 741
Encoder inputsswitchable
1 VPP EnDat 2.1 EnDat 2.2
Connection Four D-sub connections (15-pin, female)
Input frequency 500 kHz
Signal subdivision 4 096-fold
Internal memory Typically 250 000 position values per input
Interface Ethernet as per IEEE 802.3 ( 1 gigabit)
Driver software anddemo program
For Windows, Linux, LabViewProgram examples
EIB 741External interface boxThe EIB 741 is ideal for applications requiringhigh resolution, fast measured-valueacquisition, mobile data acquisition or datastorage.
Up to four incremental or absoluteHEIDENHAIN encoders can be connectedto the EIB 741. The data is output over astandard Ethernet interface.
For more information, see the EIB 741Product Information sheet.
Evaluation Electronics
MSE 1000Modular Electronic Unit for MultipointInspection ApparatusesThe MSE 1000 of HEIDENHAIN is a higherlevel electronics unit in modular design formultipoint inspection apparatuses. Theindividual modules permit connection ofincremental, absolute and analogmeasurands, the output of switch signals,and communication over diverse interfaces.In all, up to 250 axes or channels can beconfigured. This gives it the flexibilityrequired to adapt to differing operatingconditions.
In its basic configuration, the MSE 1000consists of a power module and a basic
module. It can be expanded by furthermodules as needed.
For more information, see the MSE 1000Product Information sheet.
MSE 1000
Measuring channels/axes Up to 250
Modules Basic Ethernet 10/100 to the PCFour encoder inputs with EnDat 2.2, TTL or 1 V PPSwitching input TTL
Power supply 100 to 240 V AC or 24 V DC
EnDat 4 or 8 EnDat-2.2 encoder inputs
Sinusoidal 4 or 8 encoder inputs with 1 VPP
Square wave 4 or 8 TTL encoder inputs
Analog Two analog inputs
I/O 4 relay outputs and 4 switching inputs TTL
Compressed air Air switch for pneumatic length gauges
Mounting On top hat rail on mounting stand or in electrical cabinets
Software MSEsetupEthernet driver
Interface Standard Ethernet, IEEE 802.3
Sample units immediately available; series production planned for 3rd quarter 2012
Windows is a registered trademark of the Microsoft Corporation.
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IK 220Universal PC counter cardThe IK 220 is an expansion board for PCsfor recording the measured values of twoincremental or absolute HEIDENHAINencoders. The subdivision and countingelectronics subdivide the sinusoidal inputsignals 4 096-fold. A driver software packageis included in delivery.
IK 220
Encoder inputsswitchable 1 VPP 11 APP EnDat 2.1 SSI
Connection Two D-sub connections (15-pin, male)
Input frequency 500 kHz 33 kHz
Signal subdivision 4 096-fold
Internal memory 8 192 position values per input
Interface PCI bus (plug and play)
Driver software and
demo program
For Windows 2000/XP/Vista/7
in VISUAL C++, VISUAL BASIC and BORLAND DELPHI
For more information, see the IK 220Product Information sheet.
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37
Pin Layout
9-pinHEIDENHAIN connector
15-pin D-sub connectorFor ND 28x/PWM 20 or on encoder
Power supply Incremental signals
3 4Housing
9 1 2 5 6 7 8
4 2 6 1 9 3 11 14 7
UP 0 V Externalshield
Internalshield
I1 + I1 I2 + I2 I0 + I0
Brown White White/ Brown
Green Yellow Blue Red Gray Pink
UP = Power supplyVacant pins or wires must not be used!
Shield on housing.Color assignment applies only to extension cable.
InterfacesIncremental Signals 11 APP
HEIDENHAIN encoders with11 APPinterface provide current signals.They are intended for connection to NDposition display units or EXE pulse-shapingelectronics from HEIDENHAIN.
The sinusoidal incremental signals I1 andI2 are phase-shifted by 90 elec. and havesignal levels of approx. 11 APP.
The illustrated sequence of outputsignalsI2 lagging I1applies for theretracting plunger.
The reference mark signal I0 has a usablecomponent G of approx. 5.5 A.
The data on signal amplitude apply whenthe power supply given in the Specificationsis connected at the encoder. They refer toa differential measurement between theassociated outputs. The signal amplitudedecreases with increasing frequency. Thecutoff frequency indicates the scanningfrequency at which a certain percentage ofthe original signal amplitude is maintained:
3 dB cutoff frequency:70 % of the signal amplitude6 dB cutoff frequency:50 % of the signal amplitude
Interpolation/resolution/measuring stepThe output signals of the 11 APP interfaceare usually interpolated in the subsequentelectronics in order to attain sufficientlyhigh resolutions.
Measuring steps for position measurementare recommended in the Specifications.For special applications, other resolutionsare also possible.
Interface Sinusoidal current signals 11 APP
Incremental signals 2 nearly sinusoidal signals I1 and I2Signal amplitude M: 7 to 16 APP/typically 11 APPAsymmetry IP NI/2M: 0.065Amplitude ratio MA/MB: 0.8 to 1.25Phase angle I1 + 2I/2: 90 10 elec.
Reference-marksignal
1 or several signal peaks I0Usable component G: 2 to 8.5 ASwitching threshold E, F: 0.4 AZero crossovers K, L: 180 90 elec.
Connecting cable
Cable length
Propagation time
Shielded HEIDENHAIN cablePUR [3(2 0.14 mm2) + (2 1 mm
2)]
Max. 30 m with 90 pF/m distributed capacitance
6 ns/m
Signal period360 elec.
(rated value)
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Signal period
360 elec.
(rated value)
A, B, R measured with oscilloscope in differential mode
Cutoff frequencyTypical signal amplitudecurve with respect tothe scanning frequency
Signalamplitude[%]f
Scanning frequency [kHz]f3 dB cutoff frequency6 dB cutoff frequency
InterfacesIncremental Signals 1 VPP
HEIDENHAIN encoders with1 VPPinterface provide voltage signals that canbe highly interpolated.
The sinusoidal incremental signals A andB are phase-shifted by 90 elec. and haveamplitudes of typically 1 VPP. The illustratedsequence of output signalswith Blagging Aapplies for the direction ofmotion shown in the dimension drawing.
The reference mark signal R has a usablecomponent G of approx. 0.5 V. Next to thereference mark, the output signal can bereduced by up to 1.7 V to a quiescentvalue H. This must not cause the subsequentelectronics to overdrive. Even at thelowered signal level, signal peaks with theamplitude G can also appear.
The data on signal amplitude apply whenthe power supply given in the specificationsis connected to the encoder. They refer to adifferential measurement at the 120 ohmterminating resistor between the associatedoutputs. The signal amplitude decreases withincreasing frequency. The cutoff frequencyindicates the scanning frequency at which acertain percentage of the original signalamplitude is maintained:
3 dB
70 % of the signal amplitude6 dB 50 % of the signal amplitude
The data in the signal description apply tomotions at up to 20% of the 3 dB-cutofffrequency.
Interpolation/resolution/measuring stepThe output signals of the 1 VPP interfaceare usually interpolated in the subsequentelectronics in order to attain sufficientlyhigh resolutions. For velocity control,interpolation factors are commonly over1000 in order to receive usable velocity
information even at low speeds.
Measuring steps for position measurementare recommended in the specifications.For special applications, other resolutionsare also possible.
Short-circuit stabilityA temporary short circuit of one signaloutput to 0 V or UP (except encoders withUPmin= 3.6 V) does not cause encoderfailure, but it is not a permissible operatingcondition.
Short circuit at 20 C 125 C
One output < 3 min < 1 min
All outputs < 20 s < 5 s
Interface Sinusoidal voltage signals 1 VPP
Incremental signals 2 nearly sinusoidal signals A and BSignal amplitude M: 0.6 to 1.2 VPP; typically 1 VPPAsymmetry |P N|/2M: 0.065Amplitude ratio MA/MB: 0.8 to 1.25Phase angle I1 + 2I/2: 90 10 elec.
Reference-marksignal
One or several signal peaks RUsable component G: 0.2 VQuiescent value H: 1.7 VSwitching threshold E, F: 0.04 to 0.68 VZero crossovers K, L: 180 90 elec.
Connecting cable
Cable lengthPropagation time
Shielded HEIDENHAIN cablePUR [4(2 x 0.14 mm
2) + (4 x 0.5 mm
2)]
Max. 150 m at 90 pF/m distributed capacitance6 ns/m
These values can be used for dimensioning of the subsequent electronics. Any limitedtolerances in the encoders are listed in the specifications. For encoders without integralbearing, reduced tolerances are recommended for initial operation (see the mountinginstructions).
Alternativesignal shape
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39
Input Circuitry ofthe Subsequent Electronics
DimensioningOperational amplifier MC 34074Z0 = 120R1 = 10 k and C1 = 100 pFR2 = 34.8 k and C2 = 10 pFUB = 15 VU1 approx. U0
3 dB cutoff frequency of circuitryApprox. 450 kHzApprox. 50 kHz with C1 = 1000 pF
and C2 = 82 pFThe circuit variant for 50 kHz does reduce
the bandwidth of the circuit, but in doingso it improves its noise immunity.
Circuit output signalsUa = 3.48 VPP typicallyGain 3.48
Monitoring of the incremental signalsThe following thresholds are recommendedfor monitoring of the signal level M:Lower threshold: 0.30 VPPUpper threshold: 1.35 VPP
Incremental signalsReference-mark signal
Ra < 100,typically 24Ca < 50 pFIa < 1 mAU0 = 2.5 V 0.5 V(relative to 0 V of thepower supply)
Encoder Subsequent electronics
Pin Layout
12-pin coupling, M23 12-pin connector, M23 15-pin D-sub connectorFor ND 28x/PWM 20 or on encoder
Power supply Incremental signals Other signals
12 2 10 11 5 6 8 1 3 4 9 7 /
4 12 2 10 1 9 3 11 14 7 5/6/8/15 13 /
UP SensorUP
0 V Sensor0 V
A+ A B+ B R+ R Vacant Vacant Vacant
Brown/Green
Blue White/ Green
White Brown Green Gray Pink Red Black / Violet Yellow
Shield on housing; UP = power supply voltageSensor:The sensor line is connected in the encoder with the corresponding power line.Vacant pins or wires must not be used!Color assignment applies only to extension cable.
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InterfacesIncremental SignalsTTL
HEIDENHAIN encoders withTTLinterface incorporate electronics that digitizesinusoidal scanning signals with or withoutinterpolation.
The incremental signals are transmitted asthe square-wave pulse trains Ua1 and Ua2,phase-shifted by 90 elec. The referencemark signal consists of one or morereference pulses Ua0, which are gated withthe incremental signals. In addition, theintegrated electronics produce their invertedsignals, and for noise-prooftransmission. The illustrated sequence ofoutput signalswith Ua2 lagging Ua1applies to the direction of motion shown inthe dimension drawing.
The fault-detection signal indicatesfault conditions such as breakage of thepower line or failure of the light source. Itcan be used for such purposes as machineshut-off during automated production.
The distance between two successiveedges of the incremental signals Ua1 andUa2 through 1-fold, 2-fold or 4-fold evaluationis one measuring step.
The subsequent electronics must be
designed to detect each edge of thesquare-wave pulse. The minimum edgeseparation a listed in the Specificationsapplies for the illustrated input circuitrywith a cable length of 1 m, and refers tomeasurement at the output of thedifferential line receiver. Cable-dependentdifferences in the propagation timesadditionally reduce the edge separation by0.2 ns per meter of cable. To preventcounting errors, design the subsequentelectronics to process as little as 90 % ofthe resulting edge separation.
The max. permissible shaft speed ortraversing velocity must never beexceeded.
The permissible cable length fortransmission of the TTL square-wave signalsto the subsequent electronics depends onthe edge separation a. It is at most 100 m,or 50 m for the fault detection signal. Thisrequires, however, that the power supply(see Specifications) be ensured at theencoder. The sensor lines can be used to
measure the voltage at the encoder and, ifrequired, correct it with an automatic controlsystem (remote sense power supply).
Interface Square-wave signalsTTL
Incremental signals 2 square-wave signals Ua1, Ua2 and their inverted signals,
Reference-marksignalPulse widthDelay time
1 or more TTL square-wave pulses Ua0 and their invertedpulses90 elec. (other widths available on request)|td| 50 ns
Fault-detectionsignal
Pulse width
1 TTL square-wave pulseImproper function: LOW (upon request: Ua1/Ua2 high impedance)Proper function: HIGHtS 20 ms
Signal amplitude Differential line driver as per EIA standard RS-422
UH 2.5 V at IH = 20 mA ERN 1x23:10 mAUL 0.5 V at IL = 20 mA ERN 1x23:10 mA
Permissible load Z0 100 Between associated outputs|IL| 20 mA Max. load per output (ERN 1x23:10 mA)Cload 1000 pF With respect to 0 VOutputs protected against short circuit to 0 V
Switching times(10% to 90%)
t+/ t 30 ns (typically 10 ns)with 1 m cable and recommended input circuitry
Connecting cable
Cable length
Propagation time
Shielded HEIDENHAIN cablePUR [4(2 0.14 mm
2) + (4 0.5 mm
2)]
Max. 100 m (max. 50 m) at distributed capacitance 90 pF/m
6 ns/m
Signal period 360 elec. Fault
Measuring step after4-fold evaluation
Inverse signals,, are not shown
Permissiblecable lengthwith respect to theedge separation
Cablelength[m]f
Edge separation [s]f
Without
With
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41
Pin Layout
15-pin
D-sub connector
12-pin
HEIDENHAINconnector
Power supply Incremental signals Other signals
12 2 10 11 5 6 8 1 3 4 7 / 9
4 12 2 10 1 9 3 11 14 7 13 5/6/8 15
UP SensorUP
0 V Sensor0 V
Ua1 Ua2 Ua0 1) Vacant Vacant
2)
Brown/
Green
Blue White/
Green
White Brown Green Gray Pink Red Black Violet Yellow
Shield on housing; UP = power supply voltageSensor:The sensor line is connected in the encoder with the corresponding power line.1)
ERO 14xx: Vacant2)
Exposed linear encoders: Switchover TTL/11 APP for PWTVacant pins or wires must not be used!Color assignment applies only to extension cable.
Input Circuitry ofthe Subsequent Electronics
DimensioningIC1 = Recommended differential
line receiverDS 26 C 32 ATOnly for a > 0.1 s:AM 26 LS 32MC 3486SN 75 ALS 193
R1 = 4.7 kR2 = 1.8 kZ0 = 120C1 = 220 pF (serves to improve
noise immunity)
Incremental signalsReference-mark signal
Fault-detection signal
Encoder Subsequent electronics
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InterfacesAbsolute Position Values
Interface EnDat serial bidirectional
Data transfer Absolute position values, parameters and additional information
Data input Differential line receiver according to EIA standard RS 485 for thesignals CLOCK, CLOCK, DATA and DATA
Data output Differential line driver according to EIA standard RS 485 for DATAand DATA signals.
Position values Ascending during traverse in direction of arrow (see dimensionsof the encoders)
Incremental signals 1 VPP (see Incremental signals1 VPP) depending on the unit
The EnDat interface is a digital, bidirectionalinterface for encoders. It is capable both oftransmitting position values as well astransmitting or updating information storedin the encoder, or saving new information.Thanks to the serial transmission method,only four signal lines are required. The datais transmitted in synchronism with theclock signal from the subsequent electronics.The type of transmission (position values,parameters, diagnostics, etc.) is selectedthrough mode commands that thesubsequent electronics send to the encoder.Some functions are available only withEnDat 2.2 mode commands.
For more information, refer to theEnDatTechnical Information sheet or visitwww.endat.de.
Position values can be transmitted with orwithout additional information (e.g. positionvalue 2, temperature sensors, diagnostics,limit position signals).
Besides the position, additional informationcan be interrogated in the closed loop andfunctions can be performed with theEnDat 2.2 interface.
Parametersare saved in various memoryareas, e.g.:
Encoder-specific informationInformation of the OEM (e.g. electronicID label of the motor)Operating parameters (datum shift,instruction, etc.)Operating status (alarm or warningmessages)
Monitoring and diagnostic functionsof the EnDat interface make a detailedinspection of the encoder possible.
Error messages
Warnings Online diagnostics based on valuationnumbers (EnDat 2.2)
Incremental signalsEnDat encoders are available with orwithout incremental signals. EnDat 21 andEnDat 22 encoders feature a high internalresolution. An evaluation of the incrementalsignal is therefore unnecessary.
Clock frequency and cable lengthThe clock frequency is variabledependingon the cable length (max. 150 m)between
100 kHz and 2 MHz. With propagation-delaycompensation in the subsequent electronics,clock frequencies up to 16 MHz at cablelengths up to 100 m are possible (for othervalues see Specifications).
Orderingdesignation
Command set Incrementalsignals
Power supply
EnDat 01 EnDat 2.1or EnDat 2.2
With See specificationsof the encoder
EnDat 21 Without
EnDat 02 EnDat 2.2 With Expanded range3.6 to 5.25 V DCor 14 V DCEnDat 22 EnDat 2.2 Without
Versions of the EnDat interface (bold print indicates standard versions)
Cablelength[m]f
Clock frequency [kHz]f
EnDat 2.1; EnDat 2.2 without propagation-delay compensation
EnDat 2.2 with propagation-delay compensation
Absolute encoder Subsequent electronics
1 VPP A*)
1 VPP B*)
Operatingparameters
Operatingstatus
Parametersof the OEM
Parameters of the encodermanufacturer for
EnDat 2.1 EnDat 2.2
*) Depends onencoder
Absoluteposition value E
nDatinterface
Incrementalsignals *)
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Input Circuitry of SubsequentElectronics
DimensioningIC1 = RS 485 differential line receiverand driver
C3 = 330 pFZ0 = 120
Data transfer
Incremental signalsDepending on encoder
Encoder Subsequent electronics
1 VPP
Pin Layout
8-pin coupling, M12 15-pin D-sub connector, maleFor IK215/PWM 20
Power supply Absolute position values
8 2 5 1 3 4 7 6
4 12 2 10 5 13 8 15
UP Sensor UP 0 V Sensor 0 V DATA DATA CLOCK CLOCK
Brown/Green Blue White/Green White Gray Pink Violet Yellow
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M23
M23
M23
M23
M23
44
The pins on connectors are numbered inthe direction opposite to those on couplingsor flange sockets, regardless of whetherthe connecting elements are
male or
female contacts.
When engaged, the connections areprotected to IP 67 (D-sub connector: IP 50;EN 60 529). When not engaged, there is noprotection.
Cables and Connecting ElementsGeneral Information
Connector (insulated): A connectingelement with a coupling ring. Available
with male or female contacts.
Symbols
Coupling insulated:Connecting element with external thread;
available with male or female contacts.
Symbols
D-sub connector: for HEIDENHAINcontrols, counters and IK absolute valuecards
Symbols
Accessories for flange sockets andM23 mounted couplings
Bell sealID 266526-01
Threaded metal dust capID 219926-01
Flange socket: Permanently mounted onthe encoder or a housing, with externalthread (like a coupling), available withmale or female contacts.
Symbols
Mounted couplingwith central fastening
Mounted couplingwith flange
Cutout for mounting
1)With integrated interpolation electronics
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45
12-pin 9-pin
Mating element on connecting cable toconnector on encoder cable
Coupling (female) for cable 8 mm
291698-02 291698-01
Connector on connecting cable forconnection to subsequent electronics
Connector (male) For cable with 8 mm
291697-08 291697-04
Coupling on connecting cable Coupling (male) for cable 8 mm
291698-04 291698-24
Flange socket for mounting onsubsequent electronics
Flange socket (female)
315892-08 315892-06
Mounted couplings
With flange (female) 8 mm
291698-07 291698-06
With flange (male) 8 mm
291698-31
With central fastener (male) 6 to 10 mm
741045-01
Adapter 1 VPP/11 APPFor converting the 1 VPP signals to 11 APP;12-pin M23 connector (female) and 9-pinM23 connector (male)
364914-01
Connecting Elements
15-pin
Connector on connecting cable toconnector on encoder cable
D-sub connector, female for cable 8 mm 315650-14
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Connecting Cables 1 VPP, TTL, 11 APP 12-Pin 9-PinM23 M23
1 VPP, TTL 11 APP
PUR connecting cable [3(2 x 0.14 mm2
) + (2 x 1 mm2
)]
PUR connecting cable [6(2 x 0.19 mm2)]
PUR connecting cable [4(2 x 0.14 mm2) + (4 x 0.5 mm
2)] 8 mm 6 mm1) 8 mm
Complete with D-sub connector (female)and M23 connector (male)
331693-xx 355215-xx
With one D-sub connector (female),15-pin
332433-xx 355209-xx
Complete with D-sub connector (female)and connector (male), 15-pin
for ND 28x, EIB 741;only 1 VPP: ND 11xx, ND 12xx
335074-xx 355186-xx 738681-xx
Complete with D-sub connector (female)and D-sub connector (female), 15-pin,for ND 780, PT 880, IK 220
335077-xx 349687-xx
Cable only 244957-01 291639-01
Completewith M23 coupling (female) andD-sub connector (male), 15-pinfor ND 28x, EIB 741;only 1 VPP: ND 11xx, ND 12xx
309784-xx 653231-xx
Completewith M23 coupling (female) andD-sub connector (male), 19-pinfor ND 11xx, ND 12xx (not 1 VPP)
617513-xx 716905-xx
Completewith M23 coupling (female) andD-sub connector (female), 15-pin,for ND 780, PT 880, IK 220
309783-xx 368172-xx
With one connectorwith M23 coupling (female)
298402-xx 309780-xx
Completewith M23 coupling (female) andM23 connector (male)
298400-xx 309774-xx
1)Cable length max. 9 m
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EnDat without incremental signals
PUR connecting cable [4 2 0.09 mm2
]
PUR connecting cable [(4 0.14 mm2) + (4 0.34 mm
2)] 6 mm 3.7 mm
Complete with connector (female) andcoupling (male)
368330-xx 801142-xx1)
Complete with right-angle connector(female) and coupling (male)
373289-xx 801149-xx1)
Complete with connector (female) andD-sub connector (female), 15-pin,for TNC (position inputs)
535627-xx
Complete with connector (female) andD-sub connector (male), 15-pin,for IK 215, PWM 20, EIB 741 etc.
524599-xx 801129-xx1)
Complete with right-angle connector(female) and D-sub connector (male),15-pin, for IK 215, PWM 20, EIB 741 etc.
722025-xx 801140-xx1)
With one connector (female) 634265-xx
With one right-angle connector, (female) 606317-xx
1)Max. cable length 6 m
Connecting Cables EnDat 8-PinM12
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General Electrical Information
Power supply
Connect HEIDENHAIN encoders only tosubsequent electronics whose powersupply is generated from PELV systems(EN 50 178). In addition, overcurrentprotection and overvoltage protection arerequired in safety-related applications.
If HEIDENHAIN encoders are to beoperated in accordance with IEC 61010-1,power must be supplied from a secondarycircuit with current or power limitation asper IEC 61010-1:2001, section 9.3 orIEC 60950-1:2005, section 2.5 or a Class 2secondary circuit as specified in UL1310.
The encoders require a stabilized DCvoltage UP as power supply. The respectiveSpecificationsstate the required powersupply and the current consumption. Thepermissible ripple content of the DCvoltage is:
High frequency interferenceUPP < 250 mV with dU/dt > 5 V/sLow frequency fundamental rippleUPP < 100 mV
The values apply as measured at theencoder, i.e., without cable influences. The
voltage can be monitored and adjustedwith the encoders sensor lines. If acontrollable power supply is not available,the voltage drop can be halved byswitching the sensor lines parallel to thecorresponding power lines.
Calculation of the voltage drop:
U = 2 103
where U: Voltage drop in V1.05: Length factor due to
twisted wires
LC: Cable length in mI: Current consumptionin mA
AP: Cross section of powerlines in mm2
The voltage actually applied to the encoderis to be considered when calculating theencoders power requirement.Thisvoltage consists of the supply voltage UPprovided by the subsequent electronicsminus the line drop at the encoder. Forencoders with an expanded supply range,the voltage drop in the power lines must
be calculated under consideration of thenonlinear current consumption (see nextpage).
Transient response of supply voltage and switch-on/switch-off behavior
Output signals invalid InvalidValid
UPP
1.05 LC I56 AP
If the voltage drop is known, all parametersfor the encoder and subsequent electronicscan be calculated, e.g. voltage at theencoder, current requirements and powerconsumption of the encoder, as well as thepower to be provided by the subsequentelectronics.
Switch-on/off behavior of the encodersThe output signals are valid no sooner thanafter the switch-on time tSOT = 1.3 s (2 s forPROFIBUS-DP) (see diagram). During thetime tSOT they can have any levels up to5.5 V (with HTL encoders up to UPmax). If
an interpolation electronics unit is insertedbetween the encoder and the power supply,this units switch-on/off characteristicsmust also be considered. If the powersupply is switched off, or when the supplyvoltage falls below Umin, the output signalsare also invalid. During restart, the signal
level must remain below 1 V for the timetSOT before power on. These data apply tothe encoders listed in the catalogcustomer-specific interfaces are notincluded.
Encoders with new features and increasedperformance range may take longer toswitch on (longer time tSOT). If you areresponsible for developing subsequentelectronics, please contact HEIDENHAINin good time.
Insulation
The encoder housings are isolated againstinternal circuits.
Rated surge voltage: 500 V (preferredvalue as per VDE 0110 Part 1, overvoltagecategory II, contamination level 2)
Cable Cross section of power supply lines AP
1 VPP
/TTL/HTL 11 APP
EnDat/SSI17-pin
EnDat5)
8-pin
3.7 mm 0.05 mm2 0.09 mm2
4.3 mm 0.24 mm2
4.5 mm EPG 0.05 mm2 0.05 mm2 0.09 mm2
4.5 mm 5.1 mm
0.14/0.092)
mm2
0.052), 3)
mm2
0.05 mm2
0.05/0.146)
mm2
0.14 mm2
5.5 mm PVC 0.1 mm2
6 mm 10 mm1)
0.19/0.142), 4)
mm2
0.08/0.196)
mm2
0.34 mm2
8 mm 14 mm1)0.5 mm
2
1 mm2
0.5 mm2
1 mm2
1)Metal armor
2)Rotary encoders
3)Length gauges
4) LIDA 400 5) Also Fanuc, Mitsubishi 6) RCN, LC adapter cable
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49
Encoders with expanded supplyvoltage rangeFor encoders with expanded supply voltagerange, the current consumption has anonlinear relationship with the supplyvoltage. On the other hand, the powerconsumption follows a linear curve (seeCurrent and power consumption diagram).The maximum power consumption atminimum and maximum supply voltage islisted in the Specifications. The maximumpower consumption (worst case) accountsfor:
Recommended receiver circuit
Cable length 1 m Age and temperature influencesProper use of the encoder with respectto clock frequency and cycle time
The typical current consumption at no load(only supply voltage is connected) for 5 Vsupply is specified.
The actual power consumption of theencoder and the required power output ofthe subsequent electronics are measured,while taking the voltage drop on the supplylines into consideration, in four steps:
Step 1:Resistance of the supply linesThe resistance values of the supply lines
(adapter cable and encoder cable) can becalculated with the following formula:
RL = 2
Step 2:Coefficients for calculation ofthe drop in line voltage
b = RL UP
c = PEmin RL + RL (UP UEmin)
Step 3:Voltage drop based on thecoefficients b and c
U = 0.5 (b + b2 4 c)
Step 4:Parameters for subsequentelectronics and the encoder
Voltage at encoder:UE = UP U
Current requirement of encoder:IE = U / RL
Power consumption of encoder:PE = UE IE
Power output of subsequent electronics:PS = UP IE
1.05 LC56 AP
Supply voltage [V]
Supply voltage [V]
Poweroutputofsubsequent
electronics(normalized)
Encoder cable/adapter cable TotalConnecting cable
Powerconsumptionorcurrent
requirement(normalized)
Power consumption of encoder(normalized to value at 5 V)
Current requirement of encoder(normalized to value at 5 V)
Where:UEmax,UEmin: Minimum or maximum supply
voltage of the encoder in VPEmin,
PEmax: Maximum power consumption atminimum or maximum powersupply, respectively, in W
UP: Supply voltage of the subsequentelectronics in V
RL: Cable resistance (for bothdirections) in ohms
U: Voltage drop in the cable in V1.05: Length factor due to twisted wiresLC: Cable length in m
AP: Cross section of power linesin mm2
Influence of cable length on the power output of the subsequentelectronics (example representation)
Current and power consumption with respect to the supply voltage(example representation)
PEmax PEminUEmax UEmin
PEmax PEmin
UEmax UEmin
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Rigid configuration
Frequent flexing
Frequent flexing
Cable Bend radius R
Rigid configuration Frequent flexing
3.7 mm 8 mm 40 mm
4.3 mm 10 mm 50 mm
4.5 mm EPG 18 mm
4.5 mm 5.1 mm 5.5 mm PVC
10 mm 50 mm
6 mm 10 mm1) 20 mm 35 mm 75 mm 75 mm
8 mm 14 mm1)
40 mm 100 mm
100 mm 100 mm
1)Metal armor
Cable
For safety-related applications, useHEIDENHAIN cables and connectors.
VersionsThe cables of almost all HEIDENHAINencoders and all adapter and connectingcables are sheathed in polyurethane (PURcables). Many adapter cables for withinmotors and a few cables on encoders aresheathed in a special elastomer (EPG).Many adapter cables within the motorconsist of TPE wires (special thermoplastic)in braided sleeving. Individual encodersfeature cable with a sleeve of polyvinyl
chloride (PVC).This cables are identified inthe catalog as EPG, TPE or PVC.
DurabilityPUR cables are resistant to oil in accordancewith VDE 0472 (Part 803/test type B) andto hydrolysis and microbes in accordancewith VDE 0282 (Part 10). They are free ofPVC and silicone and comply withUL safety directives. The UL certificationAWM STYLE 20963 80 C 30 V E63216is documented on the cable.
EPG cables are resistant to oil in accordance
with VDE 0472 (Part 803/test type B) andto hydrolysis in accordance with VDE 0282(Part 10). They are free of silicone andhalogens. In comparison with PUR cables,they are only somewhat resistant to media,frequent flexing and continuous torsion.
PVC cables are oil resistant. The UL certifi-cation AWM E64638 STYLE20789 105CVW-1SC NIKKO is documented on thecable.
TPE wires with braided sleeving are oilresistant and highly flexible.
Temperature range
Rigidconfiguration
Frequent flexing
PUR 40 to 80 C 10 to 80 C
EPGTPE
40 to 120 C
PVC 20 to 90 C 10 to 90 C
PUR cables with limited resistance tohydrolysis and microbes are rated forup to 100 C. If needed, please ask forassistance from HEIDENHAIN Traunreut.
LengthsThe cable lengths listed in theSpecificationsapply only for HEIDENHAINcables and the recommended inputcircuitry of subsequent electronics.
Electrically Permissible Speed/Traversing Speed
The maximum permissible shaft speed ortraversing velocity of an encoder is derivedfrom
the mechanically permissible shaftspeed/traversing velocity (if listed in theSpecifications)andthe electrically permissible shaft speed/traversing velocity.
For encoders with sinusoidal outputsignals, the electrically permissible shaftspeed/traversing velocity is limited bythe 3 dB/ 6 dB cutoff frequency or thepermissible input frequency of thesubsequent electronics.
For encoders with square-wave signals,the electrically permissible shaft speed/traversing velocity is limited by the maximum permissible scanning/
output frequency fmax of the encoder,and
the minimum permissible edgeseparation a for the subsequentelectronics.
For angle or rotary encoders
nmax =fmax
z 60 10
3
For linear encoders
vmax = fmax SP 60 103
Where:nmax: Elec. permissible speed in min
1
vmax: Elec. permissible traversingvelocity in m/min
fmax: Max. scanning/output frequency ofencoder or input f