HEDS-9200资料

Two Channel High ResolutionOptical Incremental EncoderModulesTechnical DataHEDS-9000/9100/9200Extended ResolutionSeriesFeatures• High Resolution: Up to 2048Cycles per Revolution• Up to 8192 Counts perRevolution with 4X Decoding• Two Channel QuadratureOutput• Low Cost• Easy to Mount• No Signal AdjustmentRequired• Small Size• -40°C to 100 °C OperatingTemperature• TTL Compatible• Single 5 V Supplycodestrip, these modules detectrelative linear position.These modules consist of a lensedLight Emitting Diode (LED)source and detector IC enclosedin a small C shaped plasticpackage. Due to a highlycollimated light source andunique photodetector array, thesemodules provide a highly reliablequadrature output.The HEDS-9000 and HEDS-9100are designed for use withcodewheels which have an opticalradius of 23.36 mm and 11 mmrespectively. The HEDS-9200 isdesigned for use with a linearcodestrip.These components produce a twochannel quadrature output whichcan be accessed through five0.025 inch square pins located on0.1 inch centers.The resolution of the HEDS-9000Options T and U are 2000 and2048 counts per revolutionrespectively. The HEDS-9100Options B and J are 1000 and1024 counts per revolutionrespectively. The HEDS-9200Option 300 and 360 linearencoder modules have resolutionsof 300 and 360 lines per inch.Consult local Agilent salesrepresentatives for otherresolutions.Note: Agilent Technologiesencoders are not recommendedfor use in safety criticalapplications. Eg. ABS brakingsystems, power steering, lifesupport systems and critical caremedical equipment. Pleasecontact sales representative ifmore clarification is needed.DescriptionThe HEDS-9000 Options T and Uand the HEDS-9100 Options Band J are high resolution twochannel rotary incrementalencoder modules. These optionsare an extension of our popularHEDS-9000 and HEDS-9100series. When used with a code-wheel, these modules detectrelative rotary position. TheHEDS-9200 Option 300 and 360are high resolution linear encodermodules. When used with aESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATICDISCHARGE.元器件交易网www.cecb2b.com

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Block Diagram

Theory of Operation

The diagram shown on the fol-lowing page is a block diagram ofthe encoder module. As seen inthis block diagram, the modulecontains a single LED as its lightsource. The light is collimatedinto a parallel beam by means of asingle polycarbonate lens locateddirectly over the LED. Oppositethe emitter is the integrated

detector circuit. This IC consistsof multiple sets of photodetectorsand the signal processing

circuitry necessary to produce thedigital waveforms.

The codewheel/codestrip passesbetween the emitter and detector,causing the light beam to beinterrupted by the pattern ofspaces and bars on the code-wheel. The photodiodes whichdetect these interruptions arearranged in a pattern that

corresponds to the codewheel/codestrip. These detectors arealso spaced such that a lightperiod on one pair of detectorscorresponds to a dark period onthe adjacent pair of detectors. Thephotodiode outputs are then fed

through the signal processingcircuitry resulting in A, A, B, andB. Comparators receive thesesignals and produce the final

outputs for channels A and B. Dueto this integrated phasing

technique, the digital output ofchannel A is in quadrature withthat of channel B (90 degrees outof phase).

transition in the output of channelA and the neighboring transitionin the output of channel B. Thereare 4 states per cycle, eachnominally 90°e.

State Width Error (∆S): Thedeviation, in electrical degrees, ofeach state width from its idealvalue of 90°e.

Phase (φ): The number of elec-trical degrees between the centerof the high state of channel A andthe center of the high state ofchannel B. This value is nominally90°e for quadrature output.Phase Error (∆φ): The deviationof the phase from its ideal valueof 90°e.

Direction of Rotation: When thecodewheel rotates in the directionof the arrow on top of themodule, channel A will leadchannel B. If the codewheel

rotates in the opposite direction,channel B will lead channel A.Optical Radius (Rop): The dis-tance from the codewheel’s centerof rotation to the optical center(O.C.) of the encoder module.

Definitions

Count (N): The number of barand window pairs or counts perrevolution (CPR) of thecodewheel.

1 cycle (C): 360 electrical degrees(°e), 1 bar and window pair.1 Shaft Rotation: 360 mechanicaldegrees, N cycles.

Pulse Width (P): The number ofelectrical degrees that an outputis high during 1 cycle. This valueis nominally 180°e or 1/2 cycle.Pulse Width Error (∆P): Thedeviation, in electrical degrees ofthe pulse width from its idealvalue of 180°e.

State Width (S): The number ofelectrical degrees between a

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Package Dimensions

26.67 (1.05)15.2󰀀(0.60)2. (0.100) TYP.1.0 (0.04)DATE CODE3.73 ± 0.05󰀀(0.147 ± 0.002)1.02 ± 0.10󰀀(0.040 ± 0.004)ALIGNING RECESS󰀀2.44/2.41 DIA.󰀀1.85 (0.073)(0.096/0.095)󰀀2.16 (0.085)󰀀8. (0.340)󰀀DEEPREF.HEDS-9X00YYXXX008.6 (0.34)5 CH. B4 VCC3 CH. A2 N.C.1 GNDOPTION CODE5.1 (0.20)1.52 (0.060)2.21󰀀(0.087)20.8󰀀(0.82)11.7󰀀(0.46)1.8󰀀(0.07)2.9󰀀(0.11)6.9 (0.27)GNDVCC0.63 (0.025)󰀀SQR. TYP.2.󰀀(0.100)11.9󰀀(0.47)CL17.27󰀀(0.680)20.96󰀀(0.825)2.67 (0.105) DIA.󰀀MOUNTING THRU󰀀HOLE 2 PLACES2.44/2.41 X 2.79󰀀(0.096/0.095 X 0.110)󰀀2.16 (0.085) DEEPOPTICAL CENTER1.78 ± 0.10󰀀(0.070 ± 0.004)2.92 ± 0.10󰀀(0.115 ± 0.004)10.16󰀀(0.400)OPTICAL󰀀CENTER LINE5.46 ± 0.10󰀀(0.215 ± 0.004)4.75 ± 0.10󰀀(0.187 ± 0.004)ALIGNING RECESS󰀀2.44/2.41 X 2.79󰀀(0.096/0.095 X 0.110)󰀀2.16 (0.085) DEEPOPTICAL󰀀CENTER8.81󰀀5.8󰀀45°(0.23)(0.347)ALIGNING RECESS󰀀2.44/2.41 DIA.󰀀(0.096/0.095)󰀀2.16 (0.085) DEEP4.11 (0.162)6.35 (0.250) REF.SIDE ATYPICAL DIMENSIONS IN󰀀MILLIMETERS AND (INCHES)SIDE BAbsolute Maximum Ratings

Storage Temperature, TS.....................................................................-40°C to 100°COperating Temperature, TA................................................................-40°C to 100°CSupply Voltage, VCC......................................................................................-0.5 V to 7 VOutput Voltage, VO........................................................................................-0.5 V to VCCOutput Current per Channel, Iout.................................................-1.0 mA to 5 mA

Recommended Operating Conditions

ParameterTemperatureSupply VoltageLoad CapacitanceCount FrequencyShaft Axial Play

SymbolTAVCCCLf

Min.-404.5

5.0Typ.

Max.1005.5100100±0.125±0.005

Units°CVoltspFkHzmmin.

Ripple < 100 mVp-p3.3 kΩ pull-up resistor Velocity (rpm) x N/60

Notes

Note: The module performance is guaranteed to 100 kHz but can operate at higher frequencies. For frequencies above 100 kHz it is

recommended that the load capacitance not exceed 25 pF and the pull up resistance not exceed 3.3 kΩ. For typical module performanceabove 100 kHz please see derating curves.

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Electrical Characteristics

Electrical Characteristics over Recommended Operating Range, typical at 25°C.

ParameterSupply Current

High Level Output VoltageLow Level Output VoltageRise TimeFall Time

SymbolICCVOHVOLtrtf18040

Min.302.4

0.4

Typical57

Max.85

UnitsmAVoltsVoltsnsns

IOH = -200 µA max.IOL = 3.86 mACL = 25 pF

RL = 3.3 kΩ pull-up

Notes

Encoding Characteristics

Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances.These Characteristics do not include codewheel/codestrip contribution. The Typical Values are averages overthe full rotation of the codewheel. For operation above 100 kHz, see frequency derating curves.

DescriptionPulse Width ErrorLogic State Width ErrorPhase Error

Symbol∆P∆S∆φ

Typical532

Maximum

4515

Units°e°e°e

Note: Module mounted on tolerance circle of ±0.13 mm (±0.005 in.) radius referenced from module Side A aligning recess centers.3.3 kΩ pull-up resistors used on all encoder module outputs.

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Derating Curves over Extended Operating Frequencies (HEDS-9000/9100/9200Extended Series)

Below are the derating curves for state, duty, phase and VOH over extended operating frequencies of up to240 kHz (recommended maximum frequency is 100 kHz). The curves were derived using standard TTL load.–40°C operation is not feasible above 160 kHz because VOH will drop below 2.4 V (the minmum TTL for logicstate high) beyond that frequency.

CHANGE IN PULSE WIDTH ERROR(ELECTRICAL DEGREE) CHANGE IN STATE WIDTH ERROR(ELECTRICAL DEGREE)050-40°C-10100°C-2025°C403025°C100°C-30-40-50120-40°C20100120140160180200220240140160180200220240FREQUENCY (kHz)FREQUENCY (kHz)0

CHANGE IN PHASE ERROR(ELECTRICAL DEGREE) CHANGE IN VOH (VOLTS)100°C25°C2-40°C-5

100°C25°C

-10

-40°C

310120120140160180200220240140160180200220240FREQUENCY (kHz)FREQUENCY (kHz)元器件交易网www.cecb2b.com

Gap Setting for Rotaryand Linear Modules

Gap is the distance between theimage side of the codewheel andthe detector surface of the mod-ule. This gap dimension mustalways be met and codewheelwarp and shaft end play must staywithin this range. This dimensionis shown in Figure 1.

Mounting Considerationsfor Rotary Modules

Figure 2 shows a mounting

tolerance requirement for properoperation of the high resolutionrotary encoder modules. TheAligning Recess Centers must belocated within a tolerance circleof 0.13 mm (0.005 in.) radiusfrom the nominal locations. Thistolerance must be maintainedwhether the module is mountedwith side A as the mounting planeusing aligning pins (see Figure 3),or mounted with Side B as themounting plane using analignment tool.

Mounting with AligningPins

The high resolution rotary

encoder modules can be mountedusing aligning pins on the motorbase. (Agilent does not providealigning pins.) For this configu-ration, Side A must be used as themounting plane. The AligningRecess Centers must be locatedwithin the 0.13mm (0.005 in.) RTolerance Circle as explainedabove. Figure 3 shows thenecessary dimensions.

Mounting withAlignment Tools

Agilent offers alignment tools formounting Agilent encodermodules in conjunction withAgilent codewheels, using side Bas the mounting plane. Pleaserefer to the Agilent codewheeldata sheet for more information.

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6.63+0.51(+0.020-0.250.261-0.010)SIDE BNOTE 1SIDE A3.56+0.25(0.140+0.010-0.51-0.020)IMAGE SIDE OF CODEWHEEL/CODESTRIPNOTE 1CODEWHEEL/CODESTRIPNOTES: 1. THESE DIMENSIONS INCLUDE CODEWHEEL/CODESTRIP WARP AND SHAFT END PLAY. 2. DIMENSIONS IN MILLIMETERS AND (INCHES).Figure 2. Rotary Module Mounting Tolerance.

2 PLACESNOTE 1

NOTE 1: RECOMMENDED MOUNTING SCREW TORQUE IS 4 KG-CM (3.5 IN-LBS).

Figure 3. Mounting Plane Side A.

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Mounting Plane Side A7

Mounting Plane Side B

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Recommended Codewheel Characteristics

ParameterWindow/Bar RatioWindow LengthAbsolute MaximumCodewheel Radius

Symbolφw/φbLwRc

Minimum

0.71.8 (0.07)

Maximum

1.4

Unitsmm (inch)

Notes

Rop+

1.9(0.075)mm(inch)Includes eccentricityerrors

Recommended Codestrip Characteristics and Alignment

Codestrip design must take into consideration mounting as referenced to either side A or side B (see Figure 4).

Mounting as Referenced to Side A

Mounting as Referenced to Side B

Figure 4. Codestrip Design

STATIC CHARGE WARNING: LARGE STATIC CHARGE ON CODESTRIP MAY HARM MODULE.PREVENT ACCUMULATION OF CHARGE.

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Connectors

Manufacturer

AMP DuPont Agilent Molex

Part Number103686-40442-5

65039-032 with 4825X-000 term.HEDS-02 with 4-wire leads2695 series with 2759 series term.

Mounting Surface

BothSide BBoth

Side B (see Fig. 7)

Side B

Figure 7. HEDS-02 Connector.

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Ordering Information

Two Channel Encoder Modules with a 23.36 mm Optical Radius

HEDS-9000 Option

00

*

Resolution(Cycles/Rev)T - 2000 CPRU - 2048 CPR

Two Channel Encoder Modules with an 11.00 mm Optical Radius

HEDS-9100 Option

00

*

Resolution(Cycles/Rev)B - 1000 CPRJ - 1024 CPR

Two Channel Linear Encoder Module

HEDS-9200 Option

Resolution(Cycles/Rev)300 - 300 LPI360 - 360 LPI

Note: For lower resolutions, please refer to HEDS-9000/9100 andHEDS-9200 data sheets for detailed information.

*Codewheel Information

For information on matching codewheels andaccessories for use with Agilent rotary encoder

modules, please refer to the Agilent Codewheel Datasheet HEDS-5120/6100, HEDG-5120/6120,HEDM-5120/6120.

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www.agilent.com/semiconductors

For product information and a complete list ofdistributors, please go to our web site.For technical assistance call:

Americas/Canada: +1 (800) 235-0312 or(408) 6-8675

Europe: +49 (0) 41 92460China: 10800 650 0017

: (+65) 6271 2451

India, Australia, New Zealand: (+65) 6271 2394Japan: (+81 3) 3335-8152(Domestic/Interna-tional), or 0120-61-1280(Domestic Only)Korea: (+65) 6271 2194

Malaysia, Singapore: (+65) 6271 20Taiwan: (+65) 6271 26Data subject to change.

Copyright © 2002 Agilent Technologies, Inc.Obsoletes 5988-5855ENMay 8, 20025988-6710EN