H
Panel Mount Optical Encoders
Technical Data
HEDS-5700 Series
Features
• Two Channel Quadrature
Output with Optional Index
Pulse
• Available with or without
Static Drag for Manual or
Mechanized Operation
• High Resolution – Up to
512 CPR
• Long Rotational Life,
>1 Million Revolutions
• -20 to 85
°
C Operating
Temperature Range
• TTL Quadrature Output
• Single 5 V Supply
• Available with Color Coded
Leads
Description
The HEDS-5700 series is a family
of low cost, high performance,
optical incremental encoders with
mounted shafts and bushings. The
HEDS-5700 is available with
tactile feedback for hand operated
panel mount applications, or with
a free spinning shaft for applica-
tions requiring a pre-assembled
encoder for position sensing.
The encoder contains a collimated
LED light source and special
detector circuit which allows for
high resolution, excellent encod-
ing performance, long rotational
life, and increased reliability. The
unit outputs two digital wave-
forms which are 90 degrees out of
phase to provide position and
direction information. The
HEDS-5740 Series provides a
third Index Channel.
Package Dimensions
THREAD 3/8-32
NUT 3/8-32 x 7/16"
OPTIONAL WIRING
COLOR CODE TABLE
COLOR
WHITE
BROWN
RED
BLACK
BLUE
(THREE
CHANNEL)
OUTPUT
A
B
V
CC
GND
I
*
*Note: For the HEDS-5700, Pin #2 is a No Connect. For
the HEDS-5740, Pin #2 is Channel I, the index output.
2-116
5965-5871E
The HEDS-5700 is quickly and
easily mounted to a front panel
using the threaded bushing, or it
can be directly coupled to a motor
shaft (or gear train) for position
sensing applications.
applications requiring digital
information from a manually
operated knob. Typical front
panel applications include
instruments, CAD/CAM systems,
and audio/video control boards.
The HEDS-5700 without static
drag (free spinning) is best suited
for low speed, mechanized
operations. Typical applications
are copiers, X-Y tables, and
assembly line equipment.
Applications
The HEDS-5700 with the static
drag option is best suited for
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Vibration
Supply Voltage
Output Voltage
Output Current per Channel
Shaft Load – Axial
– Radial
Symbol
T
s
T
a
V
CC
V
O
I
O
Min.
-40
-20
-0.5
-0.5
-1
Max.
+85
+85
20
7
V
CC
5
1
1
Units
°C
°C
g
V
V
mA
lb
lb
Notes
20 Hz - 2 kHz
Recommended Operating Conditions
Parameter
Temperature
Supply Voltage
Rotational Speed – Drag
– Free Spinning
Symbol
T
V
CC
Min.
-20
4.5
Max.
+85
5.5
300
2000
Units
°C
V
RPM
RPM
Notes
Noncondensing Atmosphere
Ripple <100 mV
p-p
Electrical Characteristics
Over Recommended Operating Range, Typical at 25°C
Parameter
Supply Current
High Level Output Voltage
Low Level Output Voltage
Symbol
I
CC
V
OH
V
OL
2.4
0.4
Min.
Typ.
17
57
Max.
40
85
V
V
Units
mA
Notes
Two Channel
Three Channel
I
OH
= -40
µA
Max.
I
OL
= 3.2 mA
Note:
If more source current is required, use a 3.2 K pullup resistor on each output.
2-117
Mechanical Characteristics
Parameter
Starting Torque – Static Drag
– Free Spinning
Dynamic Drag
– Static Drag
– Free Spinning
Rotational Life – Static Drag
– Free Spinning
Mounting Torque of Nut
Min.
Typ.
0.47
0.14
1.1
0.70
1 x 10
6
12 x 10
6
13
Max.
Units
oz in
oz in
oz in
oz in
Revolutions
Revolutions
lb in
Notes
100 RPM
2000 RPM
1 lb Load
4 oz Radial Load
Output Waveforms
CH A
360 ± 5.5
180 ± 45
S1
S2
S3
S4
90 ± 45 TYPICAL
CH B
90 ± 45
CH I
NOTE:
ALL VALUES ARE IN ELECTRICAL DEGREES, WHERE 360° e = 1 CYCLE OF RESOLUTION.
ERRORS ARE WORST CASE OVER ONE REVOLUTION.
CH B LEADS CH A FOR COUNTERCLOCKWISE ROTATION.
CH A LEADS CH B FOR CLOCKWISE ROTATION.
Ordering Information
HEDS-57
Outputs
0 - 2 Channel
4 - 3 Channel
Mechanical
Configuration
0 - Pins
1 - 6" Coded Leads
Resolutions
(Cycles Per Revolution)
HEDS-570X 2 Channel
K - 96 CPR
G - 360 CPR
C - 100 CPR
H - 400 CPR
D - 192 CPR
A - 500 CPR
E - 200 CPR
I - 512 CPR
F - 256 CPR
HEDS-574X Three Channel*
F - 256 CPR
A - 500 CPR
G - 360 CPR
I - 512 CPR
*Please contact factory for other resolutions.
Drag Option
0 - Free Spining
1 - Static Drag
Shaft Configuration
0 - 1/4" dia. with no flat
1 - 6 mm dia. with no flat
2 - 1/4" dia. with flat
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