Datasheet

ManualsBrandsBroadcom ManualsAngle & Rotary SensorsReflective Encoder 200 CPR -500 ... 5.5V

HEDR-54xx Series

Mid-Sized Housed Encoder

Data Sheet

ESD WARNING: Normal Handling Precautions should be taken to avoid static discharge.

Description

The HEDR-542x series are high performance, cost-e ec-

tive, two-channel optional incremental housed encoders.

These encoders emphasize high reliability, high resolution,

and easy assembly. The HEDR-542x housed encoders use

re ective technology to sense rotary position. This sensor

consists of an LED light source and a photodetector IC in

a single SO-8 surface mount package. The outputs of the

HEDR-542x encoders are two square waves in quadrature.

These encoders may be quickly and easily mounted to a

motor.

Applications

The HEDR-542x provides motion detection at a low cost,

making them ideal for high volume applications. Typical

applications include vending machines and motor manu-

facturing applications.

Note: Avago Technologies encoders are not recommend-

ed for use in safety critical applications. Eg. ABS braking

systems, power steering, life support systems and critical

care medical equipment. Please contact sales representa-

tive if more clari cation is needed.

Available Styles

Features

 Two channel quadrature output

 Quick and easy assembly

 Cost-e ective

 Ideal for small motor systems

 -10° C to +85 °C operating temperature

 Right angle connector available

 Hub available in either a set screw con guration or a

press- t/adhesive mount con guration

 External mounting ears available

Right angle version (shown here with press

 t/adhesive mount hub option)

External mounting ears version (shown here

with set screw type hub)

Summary of content (11 pages)

PAGE 1
HEDR-54xx Series Mid-Sized Housed Encoder Data Sheet Description Features The HEDR-542x series are high performance, cost-effective, two-channel optional incremental housed encoders. These encoders emphasize high reliability, high resolution, and easy assembly. The HEDR-542x housed encoders use reflective technology to sense rotary position. This sensor consists of an LED light source and a photodetector IC in a single SO-8 surface mount package.
PAGE 2
Package Dimensions B +5 A GND DETAIL A DETAIL A 14.4 11.7 13.9 B +5 V A NC GND 1.5 Ø23.0 B +5 A GND DETAIL B DETAIL B 11.7 13.9 GND NC A +5 V B 1.5 Ø23.0 15.2 17.4 17.9 5.0 Ø23.0 Ø23.0 8.5 15.2 17.9 5.0 46.0 52.0 2 2.
PAGE 3
Theory of Operation The HEDR-542X translates rotary motion of a shaft into a two channel digital output. As seen in the block diagram, the HEDR-542X series has three key parts: a single Light Emitting Diode (LED) light source, a photodetector IC with a set of uniquely configured photodiodes, and a pair of lenses. The lens over the LED focuses light onto the codewheel. Light is either reflected or not reflected back to the lens over the photodetector IC.
PAGE 4
Absolute Maximum Ratings Storage Temperature -40° C to +85° C Operating Temperature -10°-C to +85°-C Supply Voltage -0.5 V to 7 V Output Voltage -0.5 V to VCC Output Current per Channel -2.0 mA to 12 mA Shaft Axial Play ± 0.25 mm Shaft Eccentricity Plus Radial Play 0.04 mm Radial Play between Housing and Cover 0.2 mm – 0.5 mm Distance between Tip of Codewheel Shaft and PC Board 0.4 mm – 0.5 mm Distance between Codewheel and Stopper before Reset 0.25 mm – 0.
PAGE 5
Mechanical Characteristics Parameter Dimension Tolerance Units Codewheel Fits these Standard Shaft Diameters Press Fit/Adhesive Mount Hub Set Screw Hub 2, 3, 4 2, 3, 4, 5, (1/8) +0/–0.01 (+0/–0.0005) mm (in.) Allowable Motor Shaft Length Press Fit/Adhesive Mount Hub Set Screw Hub (uses size M1.5 Allen wrench, not included) Between 7.5 and 8.0 Between 7.5 and 11.5 mm Bolt Circle Diameter (2 holes) 16 to 18 mm Mounting Screw Size M2 M2.5, (2-56) for external mounting ears mm (in.
PAGE 6
Standard Mounting Mounting Considerations The mid-sized encoder must be aligned using the optional aligning pins, as specified in Figure 1, by using the optional motor boss shown in Figure 2, or by using an alignment tool or as shown in Encoder Mounting and Assembly. OPTIONAL ALIGNMENT PINS DIAMETER 1.940/2.007. 2 PLACES ON 14.50 DIAMETER CIRCLE. MAX HEIGHT 1.9 OPTIONAL MOTOR BOSS DIAMETER 9.96/10.01 MAX HEIGHT 1.5 SHAFT LENGTH M2 2 PLACES EQUALLY SPACED ON BOLT CIRCLE BETWEEN 16 AND 20 Figure 1.
PAGE 7
Encoder Mounting and Assembly Press Fit Style Encoder BASE PLATE 1. If not using optional alignment pins or motor boss to locate the base plate, slip alignment tool onto motor shaft. Slip encoder base plate into place on motor as shown below. Tighten screws or attach with an adhesive. If using alignment tool, remove it. ALIGNMENT TOOL MOTOR 2. Place the hub in the housing assembly on top of the motor shaft.
PAGE 8
3. Press down the housing assembly until it snaps into place. Recommended force is 3.5 kgf minimum, 4.0 kgf nominal, and 4.5 kgf maximum. Note that the encoder is shipped such that the housing assembly and the base plate are not being snapped together. 8 4. Using the end of a pen or other appropriate tool, press the triangular portion of the housing assembly downward. Recommended force is between 3.5 kgf to 4.0 kgf.
PAGE 9
Set Screw Style Encoder ALIGNMENT TOOL 1. If not using optional alignment pins or motor boss to locate the base plate, slip alignment tool onto motor shaft. Slip encoder base plate into place on motor as shown below. Tighten screws or attach with an adhesive. If using alignment tool, remove it. BASE PLATE MOTOR 2. Slip the set screw hub into the shaft. Proper finger-wear must be worn to avoid contamination on codewheel surface (top of hub).
PAGE 10
3. Press down the housing assembly, holding the set screw and Allen wrench in their initial position until the housing assembly snaps into place. Recommended force is 3.5 kgf minimum, 4.0 kgf nominal, and 4.5 kgf maximum. ALLEN WRENCH MOTOR 4. Using the end of a pen or other appropriate tool, press the triangular portion of the housing assembly downward. Recommended force is between 3.5 kgf to 4.0 kgf. Then apply a downward force on the end of the Allen wrench.
PAGE 11
Ordering Information *HEDR-5 4 X X – X X X X X Shaft Output Connector 01 = 2 mm 02 = 3 mm 03 = 1/8 inch 11 = 4 mm 14 = 5 mm 0 = standard/axial 1 = right angle/radial Hub 2 = 2 channel S2 = Set screw with mounting ears base plate P1 = Pressfit without mounting ears base plate Resolution E = 200 CPR *Note: Part numbers currently available: a. HEDR-5420-ES201 b. HEDR-5420-ES202 c. HEDR-5420-ES203 d. HEDR-5420-ES211 e. HEDR-5420-ES214 f.