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HEDL-65xx Dataheets PDF



Part Number HEDL-65xx
Manufacturers Hewlett-Packard
Logo Hewlett-Packard
Description Housed Two and Three Channel Optical Enco
Datasheet HEDL-65xx DatasheetHEDL-65xx Datasheet (PDF)

www.DataSheet4U.com Large Diameter (56 mm), Housed Two and Three Channel Optical Encoders Technical Data HEDL-65xx HEDM-65xx HEDS-65xx Series Features: • Two Channel Quadrature Output with Optional Index Pulse • TTL Compatible Single Ended Outputs on HEDS Series • 100°C Operating Temperature • Industry Standard 26C31 CMOS Line Driver IC on HEDL Series • Easy Assembly, No Signal Adjustment Necessary • Resolutions up to 2048 Counts Per Revolution • Maximum Shaft Diameter of 5/8 Inches • Single +5.

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www.DataSheet4U.com Large Diameter (56 mm), Housed Two and Three Channel Optical Encoders Technical Data HEDL-65xx HEDM-65xx HEDS-65xx Series Features: • Two Channel Quadrature Output with Optional Index Pulse • TTL Compatible Single Ended Outputs on HEDS Series • 100°C Operating Temperature • Industry Standard 26C31 CMOS Line Driver IC on HEDL Series • Easy Assembly, No Signal Adjustment Necessary • Resolutions up to 2048 Counts Per Revolution • Maximum Shaft Diameter of 5/8 Inches • Single +5 V Supply outputs. This index is an active high pulse that occurs once every full rotation of the codewheel. Resolutions up to 1024 Counts Per Revolution are available in the two and three channel versions. The line driver option offers enhanced performance when the encoder is used in noisy environments, or when it is required to drive long distances. The line driver option utilizes an industry standard line driver IC (26C31) which provides complementary outputs for each encoder channel. Thus the outputs of the – line driver encoder are A and A, B – – and B, and I and I for three channel versions. Suggested line receivers are 26C32 and 26C33. The quadrature signals are accessed through a cable and 10-pin female connector. Please refer to the ordering information at the end of this data sheet for a selection matrix. Applications The HEDS-65xx / HEDL-65xx provide motion detection to a very high resolution and accept a variety of shaft sizes up to a maximum of 5/8 inches. Description The HEDS-65xx/HEDL-65xx are high performance two and three channel optical incremental encoders. These encoders emphasize high reliability, high resolution, and easy assembly. Each encoder contains a lensed LED source (emitter), an integrated circuit with detectors and output circuitry, and a codewheel which rotates between the emitter and detector integrated circuit. The outputs of the HEDS6500 are two single ended square waves in quadrature. The HEDL65xx outputs are differential. The HEDS-6540 / HEDL-6540 also have a third channel index output in addition to the two quadrature 2 Typical applications include printers, plotters, tape drives, positioning tables, and automatic handlers. Note: Agilent Technologies encoders are not recommended for use in safety critical applications. Assembled Unit HEDS-65XX #xxx YYMM COUNTRY OF ORIGIN Eg. ABS braking systems, power steering, life support systems and critical care medical equipment. Please contact sales representative if more clarification is needed. 609.6 (24.0 ± 0.5) 18.14 (0.714) Base Plate ∅ 3.3 (0.128) ON ∅ 46.0 B.C. (∅ 1.811 B.C.) ∅ 25.91 (1.020) ∅ 55.88 (2.200) 24.38 (0.960) ∅ 2.44 (0.096) SLOTTED 0.254 (0.010) DIMENSIONS IN MILLIMETERS AND (INCHES). 17.27 (0.680) ∅ 2.44 (0.096) Top Cover (Housing) ∅ 55.9 (2.20) ∅ 13.2 (0.52) 5.2 (0.21) HEDS-65XX #xxx YYMM COUNTRY OF ORIGIN 65.9 (2.59) 24.9 (0.98) 30.2 (1.19) DIMENSIONS IN MILLIMETERS AND (INCHES). 3 Pinout A 1) CHANNEL A PHOTO DIODES LENS COMPARATORS 3) GND 4) NC LED 5) NC 6) GROUND 7) VCC 8) CHANNEL B INDEX-PROCESSING CIRCUITRY 9) VCC 10) CHANNEL I 2) VCC SIGNAL PROCESSING CIRCUITRY EMITTER SECTION CODE WHEEL DETECTOR SECTION PCB/CABLE/CONNECTOR Pinout B 1) NC PHOTO DIODES LENS COMPARATORS 3) GND 4) NC LED LINE DRIVER 5) A 6) A 7) B 8) B INDEX-PROCESSING CIRCUITRY 9) INDEX 10) INDEX 2) VCC SIGNAL PROCESSING CIRCUITRY EMITTER SECTION CODE WHEEL DETECTOR SECTION PCB/CABLE/CONNECTOR There are two different connector pin-out configurations used with the HEDS-65xx / HEDL-65xx series of encoders. The table below relates the part to its connector pin-out. Connector Pin-out Pinout A HEDS-65xx CONNECTOR PIN OUT 1 Channel A 2 VCC 3 GND 4 NC 5 NC 6 GND 7 VCC 8 Channel B 9 VCC 10 Channel I Pinout B HEDL-65xx CONNECTOR PIN OUT 1 NC 2 VCC 3 GND 4 NC 5A 6A 7B 8B 9 I (INDEX) 10 I (INDEX) 9 10 1 2 4 Theory of Operation The HEDS-65xx / HEDL-65xx translate the rotary motion of a shaft into either a two or three channel digital output. The HEDS-65xx uses one of the standard HEDS-9000 or HEDS-9040 modules for encoding purposes. The HEDL-654x uses the standard HEDL-9040 for encoding purposes. As seen in the block diagram, these modules contain a single Light Emitting Diode (LED) as their light source (emitter). The light is collimated into a single parallel beam by means of a plastic lens located directly over the LED. Opposite the emitter is the integrated detector circuit (detector). This circuit consists of multiple sets of photodetectors and the signal processing circuitry necessary to produce the digital waveforms. The codewheel rotates between the emitter and detector, causing the light beam to be interrupted by a pattern of spaces and bars on the codewheel. The photodiodes which detect these interruptions are arranged in a pattern that corresponds to the radius and design of the codewheel. These detectors are also spaced such that a light period on one pair of detectors corresponds to a dark period on the adja.


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