File Heiden Ha In

7/29/2019 File Heiden Ha In

1/52

March 2012

Length Gauges


2/522

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.


3/52

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


4/524

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


5/52

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


6/526

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.


7/52

7

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.


8/52

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


9/52

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 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





10/52

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.


11/52

11

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.


12/5212

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


13/52

13

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


14/5214

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


15/52

15

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


16/5216

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


17/52

+

+

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.


18/52

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


19/52

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


20/52

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


21/52

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)


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


22/52

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


Measuring standard

System accuracy

Reference mark

Measuring range

Gauging force

Version without springVertically downward

Compressed air

Radial force

Operating attitude




Fastening


Electrical DataFor length gauges

Incremental signals*Signal period

Recommended measuring step


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


23/52

MT 1200

MT 2500

23



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


0.13 N 0.17 N

1.4 bars


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)


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


5 V DC 5 %/< 160 mA (without load) 5 V DC 5 %/< 130 mA

1) After 4-fold evaluation


24/52

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


25/52

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


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


26/52

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


Measuring standard

System accuracy

Reference mark

Measuring range

Gauging force

Compressed air

Radial force

Operating attitude




Fastening


Electrical DataFor length gauges

Incremental signals*Signal period

Recommended measuring step


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


27/52

ST 1200

ST 3000

27





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


2.5 bars


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)


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


5 V DC 10 %/< 230 mA (without load) 5 V DC 10 %/< 90 mA

1) After 4-fold evaluation2)

Mechanically limited


28/5228

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


29/52

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


30/5230

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.


31/52

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


32/5232

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)


33/52

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


34/5234

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


35/52

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.


36/5236

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.


37/52

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)


38/5238

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


39/52

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.


40/5240

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


41/52

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



42/5242

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 *)


43/52

43

Input Circuitry of SubsequentElectronics

DimensioningIC1 = RS 485 differential line receiverand driver

C3 = 330 pFZ0 = 120

Data transfer

Incremental signalsDepending on encoder


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


44/52

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


45/52

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


46/5246

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


47/52

47

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


48/5248

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


49/52

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


50/5250

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

File Heiden Ha In

Documents

Transcript of File Heiden Ha In