HEDS-9202-R00

HEDS-9202-R00 Datasheet

HEDS-9202 Two Channel Optical Incremental Encoder Modules 200 LPI Analog Output

Part	Datasheet
HEDS-9202-R00	HEDS-9202-R00 (pdf)

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HEDS-9202 Two Channel Optical Incremental Encoder Modules 200 LPI Analog Output Data Sheet The HEDS-9202 is a high-performance, low-cost, optical incremental encoder module. When operated in conjunction with either a codewheel or codestrip, this module detects rotary or linear position. The encoder module consists of a lensed LED source and a detector IC enclosed in a small C-shaped plastic package. Due to a highly collimated light source and a unique photodetector array, the module is extremely tolerant to mounting misalignment. The two channel analog outputs and 5 V supply input are accessed through five inch square pins located on inch centers. The standard HEDS-9202 is designed for use with an appropriate optical radius codewheel, or linear codestrip. • Low cost • Multiple mounting options • 200 lpi resolution • Linear and rotary options available • No signal adjustment required • Insensitive to radial and axial play • to 100°C operating temperature • Two channel analog output • Single 5 V supply • Wave solderable The HEDS-9202 provides sophisticated motion detection at a low cost, making closed-loop control very cost-effective. Typical applications include printers, plotters, copiers, and office automation equipment. Note Avago Technologies’ encoders are not recommended for use in safety critical applications, e.g., ABS braking systems, power steering, life support systems, and critical care medical equipment. Please contact sales representatives if more clarification is needed. Theory of Operation The HEDS-9202 is a C-shaped emitter/detector module. Coupled with a codewheel, it translates rotary motion into a two-channel analog output. Coupled with a codestrip, it translates linear motion into analog outputs. The module contains a single Light Emitting Diode LED as its light source. The light is collimated into a parallel beam by means of a single lens located directly over the LED. Opposite the emitter is the integrated detector circuit. This IC consists of multiple sets of photodetectors and the signal processing circuitry necessary to produce the analog waveforms. The codewheel/codestrip moves between the emitter and detector, causing the light beam to be interrupted by the pattern of spaces and bars on the codewheel/ codestrip. The photodiodes which detect these interruptions are arranged in a pattern that corresponds to the radius and count density of the codewheel/codestrip. These detectors are also spaced such that a light p e riod on one pair of detectors corresponds to a dark period on the adjacent pair of detectors. The photodiode outputs are fed through the signal processing circuitry, which produces the final outputs for channels A and B. Due to this integrated phasing technique, the analog output of channel A is in quadrature with channel B 90 degrees out of phase . 1 Shaft Rotation = 360 mechanical degrees = N cycles 1 cycles c = 360 electrical degrees °e = 1 bar and window pair Pulse Width P The number of electrical degrees that an output is high during one cycle. This value is nominally 180°e or 1/2 cycle. Pulse Width Error DP The deviation, in electrical degrees, of the pulse width from its ideal value of 180°e. State Width S The number of electrical degrees between a transition in the output of channel A and the neighboring transition in the output of channel B. There are four states per cycle, each nominally 90°e. State Width Error DS The deviation, in electrical degrees, of each state width from its ideal value of 90°e. Phase F The number of electrical degrees between the center of the high state of channel A and the center of the high state of channel B. this value is nominally 90°e for quadrature output. Phase Error DF The deviation of the phase from its ideal value of 90°e. Direction of Rotation When the codewheel rotates counterclockwise, as viewed looking down on the module so the marking is visible , channel A will lead channel B. If the codewheel rotates in the opposite direction, channel B will lead channel A. Optical Radius Rop The distance from the codewheel’s center of rotation to the Optical Center O.C. of the encoder module. Mounting Position RM Distance from Motor Shaft center of rotation to center of Alignment Tab receiving hole. Absolute Maximum Ratings Subjecting the part to stresses beyond those listed under this section may cause permanent damage to the device. These are stress ratings only and it is not implied that devices function beyond these ratings. Exposure to the extremes of these conditions for extended periods may affect device reliability. Parameter Storage Temperature Operating Temperature Supply Voltage Soldering Temperature Min. Max. Unit Notes t 5 sec. Recommended Operating Conditions Parameter Temperature Supply Voltage Count Frequency Min. Typ. Max. Unit Notes Ripple < 100 mVp-p Velocity rpm x N 60 Waveform Definition Ordering Information Device Lead HEDS-9202 straight Resolution R00 200LPI Mounting Considerations MOTOR SHAFT CENTER Figure Mounting plane side A. MOTOR SHAFT CENTER Figure Mounting plane side B. HIGH MAX. ± DIA. x 45° CHAMFER ROP+ 01..00420 ROP+ 04..17857 REF. OPTICAL CENTER M x 2-56 UNC-2B 2 PLACES ROP+ 04..17857 M x 2-56 UNC-2B 2 PLACES OPTICAL CENTER ALIGNING BOSS HIGH MAX. ± DIA. x 45° CHAMFER 2 PLACES Package Dimensions DATE CODE OPTION CODE YYWW X00 ;;;;HEDS-9202 MOUNTING THRU HOLE 2 PLCS PIN 1 ID TYP. OPTICAL CENTER STANDOFF PIN 1 GND PIN 2 CH I 3 CH ONLY PIN 3 CH A PIN 4 VCC PIN 5 CH B For product information and a complete list of distributors, please go to our website: Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries. Data subject to change. Copyright 2007 Avago Technologies Limited. All rights reserved. 5988-7441EN October 15, 2007

PDF Datasheet Preview

HEDS-9202 Two Channel Optical Incremental Encoder Modules 200 LPI Analog Output

Data Sheet

The HEDS-9202 is a high-performance, low-cost, optical incremental encoder module. When operated in conjunction with either a codewheel or codestrip, this module detects rotary or linear position. The encoder module consists of a lensed LED source and a detector IC enclosed in a small C-shaped plastic package. Due to a highly collimated light source and a unique photodetector array, the module is extremely tolerant to mounting misalignment.

The two channel analog outputs and 5 V supply input are accessed through five inch square pins located on inch centers. The standard HEDS-9202 is designed for use with an appropriate optical radius codewheel, or linear codestrip.
• Low cost
• Multiple mounting options
• 200 lpi resolution
• Linear and rotary options available
• No signal adjustment required
• Insensitive to radial and axial play
• to 100°C operating temperature
• Two channel analog output
• Single 5 V supply
• Wave solderable

The HEDS-9202 provides sophisticated motion detection at a low cost, making closed-loop control very cost-effective. Typical applications include printers, plotters, copiers, and office automation equipment.

Note Avago Technologies’ encoders are not recommended for use in safety critical applications, e.g., ABS braking systems, power steering, life support systems, and critical care medical equipment. Please contact sales representatives if more clarification is needed.

Theory of Operation

The HEDS-9202 is a C-shaped emitter/detector module. Coupled with a codewheel, it translates rotary motion into a two-channel analog output. Coupled with a codestrip, it translates linear motion into analog outputs. The module contains a single Light Emitting

Diode LED as its light source. The light is collimated into a parallel beam by means of a single lens located directly over the LED. Opposite the emitter is the integrated detector circuit. This IC consists of multiple sets of photodetectors and the signal processing circuitry necessary to produce the analog waveforms. The codewheel/codestrip moves between the emitter and detector, causing the light beam to be interrupted by the pattern of spaces and bars on the codewheel/ codestrip. The photodiodes which detect these interruptions are arranged in a pattern that corresponds to the radius and count density of the codewheel/codestrip. These detectors are also spaced such that a light p e riod on one pair of detectors corresponds to a dark period on the adjacent pair of detectors. The photodiode outputs are fed through the signal processing
circuitry, which produces the final outputs for channels A and B. Due to this integrated phasing technique, the analog output of channel A is in quadrature with channel B 90 degrees out of phase .
1 Shaft Rotation = 360 mechanical degrees
= N cycles 1 cycles c = 360 electrical
degrees °e = 1 bar and window
pair

Pulse Width P The number of electrical degrees that an output is high during one cycle. This value is nominally 180°e or 1/2 cycle.

Pulse Width Error DP The deviation, in electrical degrees, of the pulse width from its ideal value of 180°e.

State Width S The number of electrical degrees between a transition in the output of channel A and the neighboring transition in the output of channel B. There are four states per cycle, each nominally 90°e.

State Width Error DS The deviation, in electrical degrees, of each state width from its ideal value of 90°e.

Phase F The number of electrical degrees between the center of the high state of channel A and the center of the high state of channel B. this value is nominally 90°e for quadrature output.

Phase Error DF The deviation of the phase from its ideal value of 90°e.

Direction of Rotation When the codewheel rotates counterclockwise, as viewed looking down on the module so the marking is visible , channel A will lead channel B. If the codewheel rotates in the opposite direction, channel B will lead channel A.

Optical Radius Rop The distance from the codewheel’s center of rotation to the Optical Center O.C. of the encoder module.

Mounting Position RM Distance from Motor Shaft center of rotation to center of Alignment Tab receiving hole.

Absolute Maximum Ratings Subjecting the part to stresses beyond those listed under this section may cause permanent damage to the device. These are stress ratings only and it is not implied that devices function beyond these ratings. Exposure to the extremes of these conditions for extended periods may affect device reliability.

Parameter Storage Temperature Operating Temperature Supply Voltage Soldering Temperature

Min.

Max.

Unit

Notes
t 5 sec.

Recommended Operating Conditions

Parameter Temperature Supply Voltage Count Frequency

Min.

Typ.

Max.

Unit

Notes

Ripple < 100 mVp-p

Velocity rpm x N 60

Waveform Definition
Ordering Information

Device

Lead

HEDS-9202 straight

Resolution

R00 200LPI

Mounting Considerations

MOTOR SHAFT CENTER

Figure Mounting plane side A.

MOTOR SHAFT CENTER

Figure Mounting plane side B.

HIGH MAX. ± DIA. x 45° CHAMFER

ROP+ 01..00420 ROP+ 04..17857 REF.

OPTICAL CENTER

M x 2-56 UNC-2B 2 PLACES

ROP+ 04..17857

M x 2-56 UNC-2B 2 PLACES OPTICAL CENTER

ALIGNING BOSS HIGH MAX. ± DIA. x 45° CHAMFER 2 PLACES

Package Dimensions

DATE CODE

OPTION CODE

YYWW X00
;;;;HEDS-9202

MOUNTING

THRU HOLE 2 PLCS

PIN 1 ID

TYP.

OPTICAL CENTER

STANDOFF

PIN 1 GND PIN 2 CH I 3 CH ONLY PIN 3 CH A PIN 4 VCC PIN 5 CH B

For product information and a complete list of distributors, please go to our website:

Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries. Data subject to change. Copyright 2007 Avago Technologies Limited. All rights reserved. 5988-7441EN October 15, 2007

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived HEDS-9202-R00 Datasheet file may be downloaded here without warranties.

Datasheet ID: HEDS-9202-R00 520289