AEDT8110OPTIONE01 [AVAGO]
Rotary Position Encoder, ROHS COMPLIANT, PLASTIC PACKAGE-8;型号: | AEDT8110OPTIONE01 |
厂家: | AVAGO TECHNOLOGIES LIMITED |
描述: | Rotary Position Encoder, ROHS COMPLIANT, PLASTIC PACKAGE-8 编码器 光电 |
文件: | 总9页 (文件大小:484K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
AEDx-8xxx-xxx
2- or 3-Channel Incremental Encoder Kit with Codewheel
Data Sheet
Description
Features
The AEDx-8xxx comes in an option of two-channel or
three-channel optical incremental encoder kit with code-
wheel integrated in a protective housing. The encoder is
lead free and compliant to the RoHS directive. Each en-
coder kit consists of a collimated LED source and a detec-
tor IC enclosed within a small plastic package.
• 3-channel differential output (A,B) with ungated, gated-
90 ° and gated-180 ° index pulse (I)
• 2-channel differential output available
• Up to 500 Cycles Per Revolution (CPR)
• Up to 30000 rpm motor speed
• -40 °C to 100 °C operating temperature
• Single 5 V supply
The AEDx-8xxx optical encoder has two-channel quadra-
ture outputs (A,B) plus a third channel index output (I).
There are three index options available. i.e. ungated, gat-
ed-90 ° and gated-180 ° electrical degree index pulse.
• Integrated RS-422 line driver
• Quick and easy assembly
The AEDx-8xxx series optical encoder is designed for use
with motors with shaft diameters of 2mm and up to 5mm.
The quadrature, index and power supplied to the encoder
are accessed through an 8-pin male connector of 1.25 mm
pitch.
Assembly View
Housing
The AEDx-8xxx solution enables the servo system to be
more compact. With the aid of alignment jig, the assembly
process will also require less alignment time, thus making
the assembly process much easier for servo motor inte-
gration.
Applications
Sensor Chassis
The AEDx-8xxx provides motion detection for DC servo
motor and closed loop stepper motor feedback system in
the following applications:
• Pick and Place machines
Codewheel & Hub
Baseplate
• Semiconductor equipment
• Factory automation equipment
Note: Avago Technologies encoders are not recommended for use in safety critical applications, e.g., ABS braking sys-
tems, 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, con-
struction, 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 more clarification is needed.
Theory of Operation
Definitions
The AEDx-8xxx optical encoder is a housed solution with Cycles (N): The number of electrical cycles per revolution
integrated encoder and codewheel. The encoder trans- (CPR).
lates the rotary motion of a shaft into incremental digital
Note: CPR refers to the raw signal from encoder, that is
outputs.
the cycles before 4x decode.
The encoder contains a single Light Emitting Diode (LED)
as the light source. The light is collimated into a parallel
One Cycle: 360 electrical degrees (°e).
beam by means of polycarbonate lens located directly
over the LED. Opposite the emitter is a detector IC. This
IC consists of multiple sets of photo detectors and signal
processing circuitry necessary to produce the digital wave-
form output. The codewheel rotates between the emitter
and detector, causing the light beam to be interrupted by
pattern of spaces and bars on the codewheel. The Photo-
diodes that detect these interruptions are arranged in a
pattern that corresponds to the radius and design of the
codewheel. These detectors are also spaced in such way
that light period on one pair of detectors corresponds to
dark period on adjacent pair of detectors. The photodiode
outputs are then fed through the signal processing circuit-
One Shaft Rotation: 360 mechanical degrees.
Cycle Error (∆C): An indication of cycle uniformity. The dif-
ference between an observed shaft angle which gives
rise to one electrical cycle, and the nominal angular
increment of 1/N of a revolution.
Pulse Width (P): The number of electrical degrees that an
output is high during 1 cycle. This value is nominally
180°e or 1/2 cycle.
Pulse Width Error (∆P): The deviation, in electrical degrees,
of the pulse width from its ideal value of 180°e.
ry that produce the final outputs for channel A and B. Due State Width (S): The numbers of electrical degrees be-
to this integrated phasing technique, the digital output of tween transitions in the output of channel A and the
channel A is in quadrature with that of channel B (90 elec- neighboring transition in the output of channel B. There
trical degrees out of phase). As a standard, the outputs are
fed through a standard RS422 line driver to deliver the dif-
ferentials signals at the final encoder output.
are 4 states per cycle, each nominally 90°e.
State Width Error (∆S): The deviation, in electrical degrees,
of each state width from its ideal value of 90°e.
Phase (Φ): The numbers 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 (∆φ): The deviation of the phase from its ideal
value of 90°e.
Index Pulse Width (Po): The number of electrical degrees
that an index is high with reference to channel A or
channel B during one full shaft rotation.
[1,2]
Absolute Maximum Ratings
Parameter
Symbol Min.
Max.
85
Units
° C
° C
V
1. Storage Temperature AEDS Series
Storage Temperature AEDT Series
2. Supply Voltage
TS
-20
-40
-0.5
-0.5
-
TS
100
7
Vcc
Vout
Iout
3. Output Voltage
Vcc
V
4. Output Current per Channel
5. Shaft Axial Play
150
mA
-
0.100 mm
0.080 mm
6. Shaft Radial Play Plus Eccentricity
-
Note:
1. Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the
device should be operated at these limits.
2. Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
2
Recommended Operating Conditions
Parameter
Symbol Min.
Typ.
Max.
Units
Notes
1. Operating Temperature AEDS Series
TA
-20
-40
4.5
-
-
85
° C
Operating Temperature AEDT Series
2. Supply Voltage
TA
-
100
5.5
° C
V
Vcc
5.0
kHz
3. Output frequency ( 200 CPR)
4. Output frequency ( 400 & 500 CPR)
-
-
100
200
Velocity(rpm) x N/60
f
-
Encoding Characteristics (Vcc = 4.5 to 5.5V, Tamb = -40 to +100°C)
AEDx-8xxx-Exx (200 CPR only)
Parameter
Symbol Min.
Typ.(3)
5
Max
35
Units
Notes
1. Pulse Width Error
∆P
∆S
∆φ
∆C
Po
Po
Po
∆Θ
-
°e
2. State Width Error
-
3
35
°e
3. Phase Error
-
2
20
°e
4. Cycle Error
-
5
15
°e
5. Index Pulse Width Un-gated
Index Pulse Width Gated 90°e
Index Pulse Width Gated 180°e
6. Position Error
220
60
140
-
360
90
180
15
500
120
220
50
°e
°e
°e
min. of arc
Note 3: Typical values specified at Vcc = 5.0V and 25°C
Encoding Characteristics (Vcc = 4.5 to 5.5V, Tamb = -40 to +100°C)
AEDx-8xxx-xxx (400 & 500CPR)
Parameter
Symbol Min.
Typ.(3) Max
Units
Notes
1. Pulse Width Error
∆P
∆S
∆φ
∆C
Po
Po
Po
∆Θ
-
7
60
°e
2. State Width Error
-
5
60
°e
3. Phase Error
-
2
35
°e
4. Cycle Error
-
7
30
°e
5. Index Pulse Width Un-gated
Index Pulse Width Gated 90°e
Index Pulse Width Gated 180°e
6. Position Error
220
50
135
-
360
90
180
20
500
130
225
60
°e
°e
°e
min. of arc
Note 3: Typical values specified at Vcc = 5.0V and 25°C
Electrical Characteristics (V = 4.5 to 5.5V, T = -40 to +100°C)
CC
amb
[1]
Parameter
Symbol
Min.
Typ.
42
Max
50
Units
mA
V
Notes
1. Supply Current
2. Output High Level
3. Output Low Level
4. Output Current
5. Rise time
ICC
VOH
VOL
IO
-
2.5
3.4
0.3
25
-
Io = -20mA
Io = 20mA
-
-
-
-
0.5
40
V
mA
ns
tr
30
100
100
6. Fall time
tf
30
ns
Note:
1. Typical values specified at Vcc = 5.0V and 25°C.
3
Pin Assignments
Pin
Signal
GND
A+
A-
Description
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Ground
Digital Output
Digital Output
Digital Output
Digital Output
Digital Output
Digital Output
Voltage Input
B+
B-
I+
I-
Vcc
Output Waveforms
C
P
2.5 V
0.5 V
CH. A
CH. B
φ
S2
S1
S3
S4
2.5 V
0.5 V
2.5 V
0.5 V
CH. I
Po
Gated 180°e
CH. I-
2.5 V
0.5 V
2.5 V
0.5 V
CH. I
Po
Gated 90°e
CH. I-
2.5 V
0.5 V
2.5 V
0.5 V
CH. I
Po
Ungated
CH. I-
2.5 V
0.5 V
CH. A-
2.5 V
0.5 V
CH. B-
2.5 V
0.5 V
Figure 1. Output waveforms for counter-clockwise rotation, viewed from the top of the encoder.
4
Direction of Motor Rotation
Direction of Rotation: When the codewheel rotates in the counter-clockwise direction viewing from the top of the en-
coder kit, channel A will lead channel B. If the codewheel rotates in the opposite direction, channel B will lead channel
A.
Electrical Interface
26LS31
Note:
OUTPUT+ represents A+, B+, or I+ digital output from the encoder.
OUTPUT- represents A-, B-, or I- digital output from the encoder.
Load resistance *RT is optional although highly recommended to reduce reflection.
Package Dimensions
Dimensions in mm unless otherwise stated.
Tolerance: +/- 0.1mm
Figure 2. Mechanical Dimensions for Mounting Option 1 (AEDx-8x0x)
5
Dimensions in mm unless otherwise stated.
Tolerance: +/- 0.1mm
Figure 3. Mechanical Dimensions for Mounting Option 2 (AEDx-8x1x)
Mounting Considerations
Option 2 (AEDx-8x1x) with Internal Mounting Hole
Option 1 (AEDx-8x0x) with Protruded External Mounting Ear Hole
CAUTION: For optimal performance, base plate and plastic housing assembly are
designed for a ONE time assembly process only. Removal and re-assembly process
should be avoided due to the potential weakness of the latch after re-assembly.
6
Mounting Alignment Tool
Alignment Tool for AEDX-8XXX,4mm (HEDS-8938-011)
Ø4.010+0.010
0
Ø10.400 0.00ꢀ
A
A
front1
0.ꢀ
0.3
SECTION A-A
Alignment Tool for AEDX-8XXX,5mm(HEDS-8938-014)
Øꢀ.010+0.010
0
Ø10.400 0.00ꢀ
A
A
front1
0.ꢀ
0.3
SECTION A-A
7
Mechanical Characteristics
Parameter
Dimension
Tolerance
Units
Notes
1. Shaft Diameter Tolerance
2, 3, 4, 5
0
mm
-0.008
2. Recommended Shaft Length
3. Mounting Screw Size
5 to 10
2 X M2
0.6
N/A
N/A
N/A
0.1
mm
mm
4. Recommended Screw Torque
5. Encoder Base Plate Thickness
lb. inch
mm
3.85
Recommended Mating Connectors
Temperature Option
Manufacturer
Part Number
Description
AEDS Series
Molex
53261-0871
Connector Box Type,
8-pin, 1.25mm pitch
AEDT Series
Hirose
DF13A-8P-1.25H
Connector Box Type,
8-pin, 1.25mm pitch
Tinned OD = 0.7mm(Max)
Tinned L = 2± 0.ꢀmm
AEDS-Series (HEDS-8911-152)
8
1
Specification:
1. Housing, 8P, pitch: 1.25mm
2. Terminal, #26~28AWG
3. Wire, UL1007 #28AWG-STR
4. Blue color
1ꢀ2± ±.0mm
LOADING
VIEW
Tinned OD = 0.7mm(Max)
Tinned L = 2± 0.ꢀmm
AEDT-Series (HEDT-8912-152)
1
8
Specification:
1. Housing, 8P, pitch: 1.25mm
2. Terminal, #26~30AWG
3. Wire, UL1007 #28AWG-STR
4. Grey color
MATING
VIEW
1ꢀ2± ±.0mm
8
Ordering Information
Option
8
AED
Shaft Diameter
01 - 2mm
02 - 3mm
11 - 4mm
14- 5mm
Channels
Resolution Options (Cycle/Rev)
0 - 2 Channel
1 - 3 Channel
E - 200 CPR
H - 400 CPR
A - 500 CPR
Mounting Type
0 - External Ear Mounting
1 - Standard mounting
Index Gating
0 - Gated 90ºe
1 - Gated 180ºe
2 - Un-gated
Operating Temperature
S - 20ºC to 85ºC
T - 40ºC to 100ºC
Connectors ordering information:
Alignment tool ordering information:
1. HEDS-8911-152 - Connectors for AEDS-8xxx series
2. HEDT-8912-152 - Connectors for AEDT-8xxx series
1. HEDS-8938-001 - Alignment tool for AEDx-8xxx-x01
series (2mm shaft diameter option)
2. HEDS-8938-002 - Alignment tool for AEDx-8xxx-x02
series (3mm shaft diameter option)
3. HEDS-8938-011 - Alignment tool for AEDx-8xxx-x11
series (4mm shaft diameter option)
4. HEDS-8938-014 - Alignment tool for AEDx-8xxx-x14
series (5mm shaft diameter option)
For product information and a complete list of distributors, please go to our web site: 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 © 2005-2008 Avago Technologies. All rights reserved.
AV02-1240EN - September 26, 2008
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