HEDR-5xxx High Resolution Series
Three Channel Quick Assembly Encoders
Data Sheet
Description
Features
The Avago HEDR-5xxx series encoders are higher resolution
replacements for our existing low cost HEDS-5xxx series
three channel optical encoders. These upgraded encoders
now come with resolution of 1200 cycles per revolution
(CPR) to 3600 CPR and are designed for easy assembly.
The base-plate and outer diameter of these encoders are
also compatible with the legacy HEDS-5xxx series, making
them ideal replacements for users who wish to upgrade
due to higher CPR requirements.
• Three channel encoder A,B and I
Each encoder contains a codewheel, LED source, detector
and integrated circuitry. As the codewheel rotates, the
detector IC generates two square waves in quadrature
and an index pulse (high state) of 90°e (gated to signal A
and B low), once per each full rotation of the codewheel.
• No signal adjustment required
The HEDR-5xxx encoders accommodate shaft diameters
of 2 mm to 8 mm and can operate in high temperature
environments of up to 100 °C.
• Available with ribbon cabling
• Single 5 V supply
• Resolution of 1200 to 3600 CPR
• Available in TTL compatible and line driver options
• Quick assembly
• IP40 rating
• Compact size: 35 mm (L) × 30 mm (W) × 20 mm (H)
• -40 °C to 100 °C or -20 °C to 85 °C operating temperature
option
Applications
High volume applications such as industrial printers,
plotters, tape drives, positioning tables ,and automatic
handlers
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. Avago’s products and software are
not specifically designed, manufactured or authorized for sale as parts, components or assemblies for the planning,
construction, maintenance or direct operation of a nuclear facility or for use in medical devices or applications. Customers
are solely responsible, and waive all rights to make claims against Avago or its suppliers, for all losses, damage, expense
or liability in connection with such use. Please contact your local sales representative if clarification is needed.
Package Dimensions
HEDR-5xxx Extension series are available with ribbon cabling:
Ribbon Cable
35mm
30mm
20mm
Standard
Through hole
With external ear option
2
Mounting Considerations
Ear option PCD
Max height
= 2.1 mm
×
×
×
Mounting screw
×
Front View
Recommended motor’s mounting dimension
Easy mounting and installation
M3 set screw
Hex key to
secure Codewheel
to motor shaft
Encoder top
assembly
(1.5mm Hex wrench)
Screws for securing
base plate to motor
Base plate shaft centering jig, to be
removed before snapping in the
encoder top assembly
Base plate compatible with
the legacy HEDS 5xxx series
Motor
shaft
Max 14.5 mm*
Motor base
* - Not applicable for 2048 cpr option. For 2048 cpr option, the recommend range is 11.5 to 13.5 mm.
It is recommended that adhesives (Hernon - Tuffbond™ 317) be applied to the screw-base plate interface to prevent
screw loosening due to CTE effect between screw and plastic at operating temperature..
3
Absolute Maximum Rating
Parameter
Value
Units
Notes
Storage Temperature, TS
-40 to 100
-20 to 85
°C
High temperature option
Low temperature option
Operating Temperature, TA
-40 to 100
-20 to 85
°C
High temperature option
Low temperature option
Supply Voltage, VCC
-0.5 to 7
V
Output Current per Channel, IOUT
Voltage
Line Driver
5
20
mA
mA
Vibration
10G, 55 to 1000
Hz
Shaft Axial Play
±0.175
mm
Shaft TIR (max.)
0.05
mm
Output waveform
Direction of Rotation: When the encoder rotates in the counter-clockwise direction (as viewed from the top of the
encoder), channel A will lead channel B. If it rotates in the clockwise direction, channel B will lead channel A.
Index Pulse Width (PO): The number of electrical degrees that an index output is high during one full shaft rotation. This
value is nominally 90°e (1/4 cycle) gated to signals A and B, both at low state.
P
C
360 e Deg
Amplitude
A
Encoder
S1
S2
S3
S4
B
Po
Motor
shaft
Gated Index of 90°e
I
Codewheel rotation movement (Anti-clockwise)
Recommended Operating Conditions
Parameter
Symbol
Min.
Temperature
TA
-40
-20
Supply Voltage
VCC
4.5
Current Consumption
Count Frequency [1]
Notes:
1. Applicable for line driver output.
2. Valid for 2400 CPR and above.
4
Typ.
5.0
Max.
Units
Notes
100
85
°C
High temperature option
Low temperature option
5.5
V
Ripple < 100 mVp-p
mA
No load
kHz
Velocity (rpm) x N/60
38
f
320 [2]
Encoding Characteristics
Encoding characteristics over recommended operating range and recommended mounting tolerances, unless otherwise specified.
Part No.
Description
Symbol
HEDR-5xxx
(Three Channel)
Pulse Width
Logic State Width
Index Pulse Width
P
S
Po
Voltage Output
Rise time
Fall time
Line Driver
Rise time
Fall time
Typ.
Max.
Notes
P ± P/4
S ± S/2
90°
1 µs
tr
tf
tr
tf
200 ns
Mechanical Characteristics
Parameter
Symbol
Blind Hollow Shaft diameter
Shaft Length
Height
Width
Length
Hub Set Screw
Dimension
Tolerance
Units
Refer to ordering information
11.5 to 14.5*
20
30
35
M3
g6
mm
mm
mm
mm
mm
± 0.5
± 0.5
± 0.5
* - Not applicable for 2048 cpr option. For 2048 cpr option, the recommend range is 11.5 to 13.5 mm.
Ribbon cable
500 ± 13 mm
6
16.3
2.54
RED LINE CABLE (pin 1)
Line Driver option
Single-ended option
Pin No.
Pin Assignment
Pin No.
Pin Assignment
1
NC
1
NC
2
VCC
2
VCC
3
GND
3
GND
4
NC
4
NC
5
A−
5
NC
6
A+
6
A+
7
B−
7
NC
8
B+
8
B+
9
I−
9
NC
10
I+
10
I+
5
PITCH = 2.54
30
17.5
15
12.8
20
Ordering Information
Available options for HEDR-5xxx-xxxx
HEDR-5
x
x
x
|
|
Mounting
Type
-
xx
x
x
|
|
|
|
Output
Type
Output Wire
Cabling Type
CPR
Temperature Rating/
Index Gating
Shaft
Diameter
5 – Standard
E – Voltage (TTL)
2 – Ribbon
B2 – 1200
0 – High /90°
0 – 2 mm
6 – External Ears
L – Line Driver
B4 – 1250
1 – High / 180⁰
1 – 3 mm
B8 – 1500
L – Std / 90⁰
3 – 5/32”
BB – 1800
M – Std / 180⁰
4 – 3/16”
Note:
High → -40 to 100 °C
Std → -20 to 85 °C
6 – 4 mm
7 – Standard
Through Hole
8 – External Ears
Through Hole
BH – 2048
BL – 2400
BP – 2500
BS – 2880
8 – 6 mm
9 – 8 mm
Currently available options
High temperature
Standard temperature
HEDR-55L2-BH07
11.
HEDR-55L2-BHL7
2.
HEDR-55L2-BH09
12.
HEDR-55L2-BHL9
3.
HEDR-55L2-BL07
13.
HEDR-55L2-BPL7
4.
HEDR-55L2-BL09
14.
HEDR-55L2-BPL9
5.
HEDR-55L2-BV07
15.
HEDR-55L2-BYL8
6.
HEDR-55L2-BV09
7.
HEDR-55L2-BY07
8.
HEDR-55L2-BY09
9.
HEDR-55L2-BP07
10.
HEDR-55L2-BP09
Note: For other options, please refer to factory.
For product information and a complete list of distributors, please go to our web site:
7 – 5 mm
BV – 3000
BY – 3600
1.
5 – 1/4 “
www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2014 Avago Technologies. All rights reserved.
AV02-3823EN - October 30, 2014
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