HEDM-6505T06 [AVAGO]
SINGLE, 2 CHANNELS, ROTARY OPTICAL POSITION ENCODER;
| 型号： | HEDM-6505T06 |
| 厂家： | 
AVAGO TECHNOLOGIES LIMITED |
| 描述： | SINGLE, 2 CHANNELS, ROTARY OPTICAL POSITION ENCODER 编码器 光电 |
| 文件： | 总14页 (文件大小：228K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HEDL-65xx, HEDM-65xx, HEDS-65xx Series
Large Diameter (56 mm), Housed Two and
Three Channel Optical Encoders
Data Sheet
Description
Features
The HEDS-65xx/HEDL-65xx are high performance • Two channel quadrature output with optional
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
index pulse
• TTL compatible single ended outputs on HEDS Series
• 100ºC operating temperature for metal code wheel
detectors and output circuitry, and a codewheel which • 70°C operating temperature for mylar code wheel
rotates between the emitter and detector integrated
circuit. The outputs of the HEDS-6500 are two single
ended square waves in quadrature. The HEDL-65xx
outputs are differential.
• Industry standard AM26C31Q CMOS line driver IC on
HEDL Series
• Easy assembly, no signal adjustment necessary
• Resolutions up to 2048 counts per revolution
The HEDS-6540 / HEDL-6540 also have a third channel
index output in addition to the two quadrature outputs.
This index is an active high pulse that occurs once ev-
ery full rotation of the codewheel. Resolutions up to 1024
Counts Per Revolution are available in the two and three
channel versions.
Applications
The HEDS-65xx
/ HEDL-65xx provide motion de-
tection to
a very high resolution and accept a
variety of shaft sizes up to a maximum of 5/8 inches.
The line driver option offers enhanced performance
when the encoder is used in noisy environments, or
when it is required to drive long distances.
Typical applications include printers, plotters, tape
drives, positioning tables, and automatic handlers.
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 represen-
tative if more clarification is needed.
The line driver option utilizes an industry standard line
driver IC AM26C31Q 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 or-
dering information at the end of this data sheet for a
selection matrix.
Assembled Unit
24.0 0.5
(192.2)
0.81
(20.4)
Base Plate
3.3
(0.128)
25.91
55.88
∅
∅
∅
(1.020)
(2.200)
ON ∅ 46.0 B.C.
(∅ 1.811 B.C.)
24.38
(0.960)
2.44
2.44
∅
∅
(0.096)
(0.096)
0.254
(0.010)
SLOTTED
17.27
(0.680)
DIMENSIONS IN MILLIMETERS AND (INCHES).
Top Cover (Housing)
55.9
13.2
∅
∅
(2.20)
(0.52)
65.9
(2.59)
HEDS-65XX #xxx
YYMM
COUNTRY OF ORIGIN
5.2
(0.21)
24.9
(0.98)
30.2
(1.19)
DIMENSIONS IN MILLIMETERS AND (INCHES).
2
Pinout A
1) CHANNEL A
2) V
CC
PHOTO DIODES
COMPARATORS
LENS
3) GND
4) NC
5) NC
LED
6) GROUND
7) V
CC
8) CHANNEL B
9) V
INDEX-PROCESSING
CIRCUITRY
CC
10) CHANNEL I
SIGNAL PROCESSING
CIRCUITRY
EMITTER
SECTION
CODE
WHEEL
DETECTOR SECTION
PCB/CABLE/CONNECTOR
Pinout B
1) NC
2) V
PHOTO DIODES
CC
COMPARATORS
LENS
3) GND
4) NC
5) A
LED
LINE
DRIVER
6) A
7) B
8) B
INDEX-PROCESSING
CIRCUITRY
9) INDEX
10) INDEX
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.
Pinout A
Pinout B
Connector Pin-out
HEDS-65xx CONNECTOR
PIN OUT
HEDL-65xx CONNECTOR
PIN OUT
1
2
3
4
5
6
7
8
9
Channel A
1
2
3
4
5
6
7
8
9
NC
VCC
VCC
GND
NC
GND
NC
NC
A
GND
VCC
A
B
Channel B
VCC
B
I (INDEX)
10 Channel I
10 I (INDEX)
3
Theory of Operation
Definitions
The HEDS-65xx / HEDL-65xx translate the rotary motion
Count (N):The number of bar and window pairs or counts
of a shaft into either a two or three channel digital per revolution (CPR) of the codewheel.
output.
One Cycle (C): 360 electrical degrees (e), 1 bar and
window pair.
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.
One Shaft Rotation: 360 mechanical degrees, N cycles.
Position Error (∆Θ): The normalized angular difference
between the actual shaft position and the position
indicated by the encoder cycle count.
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 Cycle Error (∆C): An indication of cycle uniformity. The
beam by means of a plastic lens located directly over difference between an observed shaft angle which gives
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.
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 one cycle. This value is nominally
The codewheel rotates between the emitter and 180 e or 1/2 cycle.
detector, causing the light beam to be interrupted by a
PulseWidth Error (∆P):The deviation, in electrical degrees,
of the pulse width from its ideal value of 180 e.
pattern of spaces and bars on the codewheel. The pho-
todiodes 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 adjacent pair of detectors. The
photodiode outputs are then fed into the signal pro-
cessing circuitry resulting in A, A, B, and B (I and I also in
the three channel encoders). Comparators receive these
signals and produce the final outputs for channels A and
State Width (S): The number of electrical degrees
between a transition in the output of channel A and the
neighboring transition in the output of channel B. There
are 4 states per cycle, each nominally 90 e.
–
–
StateWidth Error (∆S): the deviation, in electrical degrees,
of each state width from its ideal value of 90 e.
Phase (Φ): the number of electrical degrees between the
B. Due to this integrated phasing technique, the digital center of high state on channel A and the center of the
output of channel A is in quadrature with that of channel
B (90 degrees out of phase).
high state on channel B. This value is nominally 90 e for
quadrature output.
In the HEDS-6540 / HEDL-6540 the output of the com- Phase Error (∆Φ): The deviation of the phase from its
parator for the index pulse is combined with that of the
outputs of channel A and channel B to produce the final
index pulse. The index pulse is generated once every
rotation of the codewheel and is a one state width
(nominally 90 electrical degrees), true high index pulse.
It is coincident with the low states on channels A and B.
ideal value of 90 e.
Direction of Rotation: When the codewheel rotates in
a counterclockwise direction (when viewed from the
encoder end of the motor) channel A will lead channel B.
If the codewheel rotates in the clockwise direction
channel B will lead channel A.
Index Pulse Width (P0): The number of electrical degrees
that an index output is high during one full shaft rotation.
This value is nominally 90 e or 1/4 cycle.
4
Output Waveforms
C
P
2.4 V
0.4 V
CH A
OUTPUT
PHASE
S2
S1
S3
S4
2.4 V
0.4 V
CH B
OUTPUT
I1
I2
2.4 V
0.4 V
CH I
OUTPUT
P0
ROTATION
Waveforms for Encoders without Line Drivers.
A
A
B
B
I
I
Waveforms for Encoders with Line Drivers.
5
Absolute Maximum Ratings
Parameter
HEDS-6500
-40 to +100
-40 to +100
-.5 to +7
-.6 to Vcc
-1 to 5
30,000
20
HEDS-6540
-40 to +100
-40 to +100
-.5 to +7
-.6 to Vcc
-1 to 5
30,000
20
HEDL-6540
-40 to +100
-40 to +100
-.5 to +7
HEDL-6545
-40 to +100
-40 to +100
-.5 to +7
Storage Temperature
Operating Temperature
Supply Voltage
Celsius
Celsius
Volts
Output Voltage
-.6 to Vcc
-.6 to Vcc
Volts
Output Current Per Channel
Velocity
mA
30,000
30,000
RPM
Vibration
20
5
20
5
Gs
Shaft Axial Play
5
5
Inch/1000
Inch/1000
Radial Play & Eccentricity
2
2
2
2
Recommended Operating Conditions
Parameter
HEDS-6500
-40 to +100
4.5 to 5.5
100
HEDS-6540
-40 to +100
4.5 to 5.5
100
HEDL-6540
-40 to +100
4.5 to 5.5
100
HEDL-6545
-40 to +100
4.5 to 5.5
100
Temperature
Celsius
Volts
pF
Supply Voltage
Load Capacitance
Count Frequency
100
100
100
100
kHz
Shaft Eccentricity
Plus Radial Play
.05
( .002)
.05
( .002)
.05
( .002)
.05
( .002)
mm
(Inch/1000)
Note: The HEDS-65XX performance is guaranteed to 100 kHz but can operate at higher frequencies. For frequencies above 100 kHz
it is recommended that the load capacitance not exceed 25 pF and pull up resistors of 3.3 kΩ between the output channels and Vcc
are included.
6
Encoding Characteristics
Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances unless
otherwise specified. Values are for the worst error in the full rotation.
Part Number
Description
Symbol
Min.
Typ.*
Max.
Units
HEDS-6500***
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
∆P
∆S
∆Φ
∆Θ
∆C
5
5
2
7
5
35
35
15
20
5.5
°e
°e
°e
min. of arc
°e
HEDS-6540**
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
∆P
∆S
∆Φ
∆Θ
∆C
5
5
2
7
5
35
35
15
20
5.5
125
°e
°e
°e
min. of arc
°e
°e
Index Pulse Width
∆P0
55
90
CH I fall after CH B or CH A fall
-25°C to +100°C
-40°C to +100°C
t1
t1
10
-300
100
100
250
250
ns
ns
CH I rise after CH B or CH A rise
-25°C to +100°C
-40°C to +100°C
t2
t2
70
70
150
150
300
1000
ns
ns
HEDL-654x
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
∆P
∆S
∆Φ
∆Θ
∆C
5
5
2
7
5
35
35
15
20
5.5
°e
°e
°e
min. of arc
°e
°e
Index Pulse Width
∆P0
90
*Typical values specified at Vcc = 5.0 V and 25°C.
**HEDS-6540 – Active high Index part. Pull-up of 2.7 kΩ used on all outputs of modules that do not have a line driver.
***HEDS-6500 – 3.3 kΩ pull-up resistors used on all encoder module outputs.
7
Electrical Characteristics
Electrical Characteristics over Recommended Operating Range, typical at 25°C.
Part Number
Symbol*
Min.
Typ.
Max.
Units
Notes
HEDS-6500
Icc
VOH
VOL
tr
17
40
mA
V
V
ns
ns
2.4
IOH = -40 µA max
IOL = 3.2 mA
CL = 25 pF, RL = 11 kΩ pull-up.
0.4
200
50
tf
HEDS-6540
Icc
VOH
VOL
tr
30
2.4
57
85
mA
V
V
ns
ns
IOH = -200 µA max
IOL = 3.86 mA
CL = 25 pF, RL = 3.3 kΩ pull-up.
0.4
180
40
tf
*Explanation for symbols.
Icc – Supply current, VOH – High Level Output Voltage, VOL – Low Level Output Voltage, tr – Rise Time, tf – Fall Time.
Electrical Interfaces
To insure reliable encoding performance, the HEDS-6540 three channel encoder requires 2.7 kΩ pull-up resistors to
the supply voltage on each of the three output lines Ch. A, Ch. B, and Ch. I located as close as possible to the encoder
Mechanical Characteristics
Parameter
Symbol
Dimensions
7.7 (110 x 10-6)
15.9 (0.625)
46.0 (1.811)
2.5 x 0.45 x 5
Tolerances [1]
Units
Moment Of Inertia
Required Shaft Length [2]
Bolt Circle [3]
J
gcm2 (oz-in-s2)
mm (inches)
mm (inches)
mm
0.6 (.024)
0.13 (.005)
Mounting Screw Size [4]
Pan Head Style
#2-56 x 3/16
3.04 (120)
1.0 (0.88)
Inches
Encoder Base Plate Thickness
Mounting Screw Torque
Hub Set Screw
mm (inches)
Kg (in-lbs)
UNC #2-56
Hex head set screw
Notes:
1. These are tolerances required of the user.
2. Through hole in the encoder housing are also available, for longer shafts.
3. The HEDL-65X0 must be aligned using the aligning pins as specified in the section on “MOUNTING CONSIDERATIONS.”
4. The recommended mounting screw torque for 2 screws is 1.0 Kg (0.88 in-lbs).
8
Mounting Considerations
The HEDS-654x/HEDL-654x must be aligned with respect to the optical center (codewheel shaft) as indicated in the
following figure.
2 SCREW MOUNTING
M2.5 (2-56 UNC-2B)
2 PLCS – EQUALLY
SPACED ON
46.00 (1.811) DIA.
BOLT CIRCLE
2.62
(0.103)
24.38
(0.960)
∅ 0.25 (0.010) A
—A—
MOTOR SHAFT CENTER
ALIGNMENT BOSS
∅ 26.010/25.984
(∅ 1.024/1.023)
5.7 (0.225) TALL MAX.
∅ 0.15 (0.006) A
17.27
(0.680)
ALIGNING PINS
2.39/2.34 DIA. – 0.76 HIGH
(0.094/0.092–0.030)
0.25 (0.010) x
15.88
(0.625)
45° CHAMFER
2 PLACES
∅ 0.15 (0.006) A
TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES).
If neither locating pins nor locating boss are available, then a centering tool supplied by Avago can be used (HEDS-
6510).
The following figure shows how the main encoder components are organized.
Encoder Mounting and Assembly
EXPLODED VIEW
9
1
ALIGNMENT
TOOL
ASSEMBLE COMPONENTS AND MOUNTING
SCREWS AND TOOLS AS APPROPRIATE.
2
LOAD ENCODER BASEPLATE ONTO
RECEIVING SURFACE (MOTOR END
PLATE) WITH MOUNTING SCREW HOLES
ALIGNED WITH MATING HOLES. LOAD
MOUNTING SCREWS AND LEAVE SLIGHTLY
LOOSE.
10
3
LOCATE ENCODER BASEPLATE
CHOOSE CENTERING CYLINDER OR UNDERSIDE LOCATING PINS.
CENTERING CYLINDER: LOCATE ENCODER BASEPLATE WITH
CENTERING CYLINDER. WHEN IN PLACE, TIGHTEN MOUNTING SCREWS.
LOCATING PINS: WITH LOCATING PINS PROPERLY SEATED IN
CORRESPONDING RECEIVING HOLES IN ENCODER BASEPLATE,
TIGHTEN MOUNTING SCREWS.
4
LOCATE ENCODER MODULE AND CODEWHEEL
ALIGN ENCODER MODULE AND CODEWHEEL AS SHOWN.
BE CAREFUL NOT TO DAMAGE THE ENCODER INTERNAL COMPONENTS
WITH THE CODEWHEEL.
BRING THE ENCODER MODULE AND CODEWHEEL DOWN SUCH THAT
THE ENCODER MODULE LOCATING HOLES (ON ITS UNDERSIDE)
MATE WITH THE BASEPLATE ROUND PINS. THE BASEPLATE SQUARE
PINS SHOULD SEAT INTO THE ENCODER MODULE MOUNTING
THRU HOLES.
CONCURRENTLY, BRING THE CODEWHEEL DOWN ONTO THE
MATING SHAFT.
11
5
ALLEN WRENCH TO TIGHTEN CODEWHEEL SET SCREW
CODEWHEEL GAPPING TOOL
WITH CODEWHEEL AND ENCODER MODULE IN PLACE,
PLACE CODEWHEEL GAPPING TOOL UNDER CODEWHEEL
AS SHOWN. INSERT THE ALLEN WRENCH INTO THE
CODEWHEEL SET SCREW AND TIGHTEN. REMOVE ALLEN
WRENCH AND GAPPING TOOL.
6
WITH CODEWHEEL AND ENCODER MODULE IN PLACE,
LOAD ENCODER HOUSING FROM TOP INTO "SNAPPED"
POSITION. INSURE THAT ANY CABLES FROM THE
ENCODER MODULE ARE FOLDED DOWN SUCH THAT
THEY EMERGE FROM THE BOTTOM OF THE HOUSING'S
REAR RECTANGULAR PORT.
12
Ordering Information for 2CH and 3CH Encoder Modules
Encoders Metal Codewheel (up to 100°C)
HEDS
-
65
OPTION
RESOLUTION
(CYCLES/REV)
SHAFT
OUTPUTS
THROUGH HOLE
DIAMETER
0 – 2 CH
4 – 3 CH
0 – None
5 – 13.3 mm
(0.525 in.)
10 – 5/8 in.
05 – 3/16 in.
06 – 1/4 in.
08 – 3/8 in.
09 – 1/2 in.
A = 500
B = 1000
J = 1024
11 – 4 mm
12 – 6 mm
13 – 8 mm
05
06
08
09
10
11
12
13
HEDS-6500#
A
B
J
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
HEDS-6505#
HEDS-6540#
HEDS-6545#
A
B
J
*
*
*
A
B
J
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
A
B
J
*
*
*
*
*
Encoders Film Codewheel (up to 70°C)
HEDM
–
65
OPTION
THROUGH
HOLE
RESOLUTION
(CYCLES/REV)
SHAFT
DIAMETER
OUTPUTS
0 – None
5 – 13.3 mm
(0.525 in)
05 – 3/16 in.
10 – 5/8 in.
11 – 4 mm
12 – 6 mm
13 – 8 mm
T – 2000
U – 2048 2 CH only
0 – 2 CH
4 – 3 CH
06 – 1/4 in.
08 – 3/8 in.
09 – 1/2 in.
05
06
08
09
10
11
12
13
HEDM-6500#
HEDM-6505#
T
U
*
*
*
*
T
U
*
*
*
*
HEDM-6540#
HEDM-6545#
T
T
*
Ordering Information for 2CH and 3CH Encoder Modules with Line Driver
Encoders with Metal Codewheel (up to 100°C)
HEDL
-
65
OPTION
RESOLUTION
(CYCLES/REV)
SHAFT
OUTPUTS
THROUGH HOLE
DIAMETER
0 – 2 CH
4 – 3 CH
0 – None
5 – 13.3 mm
(0.525 in.)
11 – 4 mm
08 – 3/8 in.
09 – 1/2 in.
10 – 5/8 in.
A = 500
B = 1000
J = 1024
12 – 6 mm
13 – 8 mm
05
06
08
09
10
11
12
13
HEDL-6540#
HEDL-6545#
B
*
*
B
J
*
*
*
*
Ordering Information for HEDS=76XX Centering Tools
HEDS-6510 Option
0
SHAFT
DIAMETER
10 – 5/8 in.
11 – 4 mm
12 – 6 mm
13 – 8 mm
05 – 3/16 in.
06 – 1/4 in.
08 – 3/8 in.
09 – 1/2 in.
05
06
08
09
10
11
12
13
HEDS-6510
0
*
*
*
*
*
*
*
*
Ordering Information for HEDS-65XX Codewheel
Gapping Tool
HEDS-6511
For product information and a complete list of distributors, please go to our website: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries.
Data subject to change. Copyright © 2008 Avago Technologies Limited. All rights reserved. Obsoletes 5988-9398EN
AV02-0991EN January 30, 2008
14
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