HEDT-9141#I00 Avago Technologies US Inc., HEDT-9141#I00 Datasheet

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HEDT-9141#I00

Manufacturer Part Number
HEDT-9141#I00
Description
Encoders 3 Channel 512CPR
Manufacturer
Avago Technologies US Inc.
Type
Optical Encoderr
Datasheet

Specifications of HEDT-9141#I00

Pulses Per Revolution
2048
Detents
No
Motion
Rotary
Number Of Channels
3
Mounting Style
Through Hole
Index Output
Indexed
Encoder Signal
Digital
Built In Switch
No
Operating Supply Voltage (typ)
5VDC
Operating Temperature Min Deg. C
-40C
Terminal Type
PC Pins
Termination Style
Solder Pin
Supply Voltage
5 V
Product
Optical
Technology
Rotary
Lead Free Status / RoHS Status
Compliant
HEDT-9040, HEDT-9140
High Temperature 140°C
Three Channel Optical
Incremental Encoder Modules
Data Sheet
Description
The HEDT-9040 and HEDT-9140 are high temperature
three channel optical incremental encoder modules.
When used with a codewheel, these low cost modules
detect rotary position. Each module consists of a lensed
LED source and a detector IC enclosed in a small plastic
package. Due to a highly collimated light source and a
unique photodetector array, these modules provide the
same high performance found in the HEDS-9040/9140
three channel encoders.
The HEDT-9040 and 9140 have Block Diagram two channel
quadrature outputs plus a third channel index output.
This index output is a 90 electrical degree high true index
pulse.
The HEDT-9040 is designed for codewheels which have an
optical radius of 23.36 mm (0.920 in.). The HEDT-9140 is
designed for codewheels which have an optical radius of
11.00 mm (0.433 in.).
The quadrature signals and the index pulse are accessed
through fi ve 0.025 inch square pins located on 0.1 inch
centers.
Resolutions between 360 and 1024 counts per revolution
are available. Consult local Avago sales representatives for
other resolutions.
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.
Features
• -40°C to 140°C Operating Temperature
• Two Channel Quadrature Output with Index Pulse
• Suitable for Automotive Applications
• Resolution up to 1024 Counts per Revolution
• Low Cost
• Easy to Mount
• No Signal Adjustment Required
• Small Size
Applications
The HEDT-9040 and 9140 provide high temperature
motion control detection at a low cost, making them
suitable for automotive and industrial 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 clarifi cation is needed.

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HEDT-9141#I00 Summary of contents

Page 1

... This index output electrical degree high true index pulse. The HEDT-9040 is designed for codewheels which have an optical radius of 23.36 mm (0.920 in.). The HEDT-9140 is designed for codewheels which have an optical radius of 11.00 mm (0.433 in.). The quadrature signals and the index pulse are accessed through fi ...

Page 2

... SIDE A HEDT-9041 26.67 (1.05) 15.2 (0.60) 0.63 (0.025) SQR. TYP. OPTION CODE 5.1 (0.20) DATE CODE HEDT-9x41 1.02 ± 0.10 (0.040 ± 0.004) ALIGNING RECESS 2.44/2.41 DIA. C 1.85 (0.073) (0.096/0.095) L 2.16 (0.085) 8.64 (0.340) DEEP REF. 17.27 (0 ...

Page 3

... Theory of Operation The HEDT-9040 and 9104 are emitter/detector modules. Coupled with a codewheel, these modules translate the rotary motion of a shaft into a threechannel digital output. As seen in the block diagram, 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 ...

Page 4

Output Waveforms P φ Defi nitions Count (N): The number of bar and window pairs or counts per revolution (CPR) of the codewheel. One Cycle (C): 360 electrical degrees (°e), 1 bar and window pair. One Shaft Rotation: ...

Page 5

Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Supply Voltage Output Voltage Output Current per Channel Shaft Axial Play Shaft Eccentricity Plus Radial Play Velocity Acceleration Note: 1. Absolute maximums for HEDS-5140 codewheel only. Recommended Operating Conditions Parameter Temperature Supply ...

Page 6

... B as the mounting plane using an alignment tool (see Figures 3 and 4). 6 Min. Typ.* Max. Units 2 Dimension 5/32 1/8 3/16 1/4 0.6 (8 Figure 1. Pull-up Resistors on HEDT-9X40 Encoder Module Outputs. Figure 2. HEDT-9X40 Mounting Tolerance. Notes I = -100 mA min 3.86 mA max 2.7 kΩ pull-up L Tolerance Units +0.000 mm -0.015 +0.000 in. -0.0007 -6 2 ...

Page 7

... The HEDS-8905 alignment tool is recommended for mounting the HEDT-9140 module with Side B as the mounting plane. This tool can only be used when the HEDT- 9140 module is mounted with the HEDS-5140 (codewheel with hub). The HEDS-8905 tool fi xes the module position using the codewheel hub as a reference ...

Page 8

... Mounting with Aligning Pins The HEDT-9040 and HEDT-9140 can also be mounted using aligning pins on the mounting surface. (Avago does not provide aligning pins.) For this confi guration, Side A must be used as the mounting plane. The aligning recess centers must be located within the 0.13 mm (0.005 in.) Radius Tolerance Circle as explained in “Mounting Considerations. ” ...

Page 9

... Three Channel Encoder Modules and Codewheels, 11.00 mm Optical Radius HEDT-914 Option 0 0 LEAD 0-STRAIGHT LEADS 1-BENT LEADS HEDT-9140 HEDT-9141 HEDS-5140 I * Accessories HEDS-8905 Alignment Tool for mounting the HEDT-9140. 9 HEDS-514 Option Hub 0 - Codewheel w/Hub 5 - Codewheel w/o Hub Resolution Shaft Diameter (Cycles/Rev WITHOUT HUB I = 512 CPR 1/8 in 5/32 in 1/4 in ...

Page 10

... Index pulses may be placed arbitrarily over a full codewheel rotation. This is done by altering only the pattern of the codewheel with no modifi cations necessary to the HEDT-9X40 module. The only restriction is that, depending on the CPR of the codewheel, consecutive index pulses may have to be separated by at least 10 full cycles ...

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