Optical Encoders
SERIES 63A
High Resolution, 20mm,
Absolute Encoding
FEATURES
• Miniature Size, 20mm (0 .787")
Diameter
• Single Ended Outputs
• Long Service Life
• Conductive Carbon Fiber Housing
• IP 50 Sealing
• High Noise Immunity
• Low Supply Current
Requirements
• 8-Bit Gray Code or Binary Output
• Single Turn 8-Bit Word
APPLICATIONS
• Steer by Wire
• Machine Tool Controls
• Material Handling
• Flow Meters
• Any Application Requiring
Discrete Digital Positioning and
Angular Detection at Start Up.
DESCRIPTION
The Series 63A is intended for
applications
requiring
high
performance, high-resolution digital
feedback in a very small package.
The Series 63A encoder provides 8-
bit absolute resolution in a package
only 20mm (0.787") in diameter.
Outputs can be configured in either
gray code or binary code. The
encoder housing is constructed of a
conductive carbon fiber composite
that provides the EMI shielding of an
all metal housing and the performance
of a lightweight robust assembly.
Optical and Mechanical
Encoders
DIMENSIONS
In inches (and millimeters)
2-56 THREADS
.20
( 5,1)
3 PLACES ON A
.550 B.C.
(14,0 B.C.)
Ø.787
(19,99)
Ø.438 .002
(11,11 0,05)
PIN #14
PIN #1
.888
(22,56)
.731
(18,57)
STANDARD 14 POSITION
DUAL ROW HEADER
FEMALE SPACING = .100 x .100
(2,54 x 2,54)
.050
(1,27)
(
+.0000
.1247 -.0003
+.0,000
3,167 -0,007
)
.925
(23,5)
.890
(22,61)
.795
(20,19)
.365 .020
(9,27 0,5)
CABLE LENGTH
8.0 .5
(203 13)
UNLESS OTHERWISE SPECIFIED, STANDARD TOLERANCE IS .010 [ ,26]
Encoder
10
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical Encoders
SPECIFICATIONS
Electrical Ratings
Input Voltage:
5.0 ± 5% Vdc or 5-26 Vdc
Input Current Requirements:
40 mA
maximum plus interface loads
Ripple Current:
2% peak-to-peak @ 5 Vdc
Output Circuits:
TTL Compatible
VOH >3.80v@-8mA, VOL<0.44v@8mA
VOH >2.50v@-20mA, VOL<0.50v@20mA
Output Format:
Gray code or Binary Code: 8-bit, single turn,
single ended. Gray code option utilizes low
true Chip Enable (CE’) that is pulled down with
internal 10K resistor. Positive TTL signal to
CE’ will force the 8-bit outputs to tri-state
condition allowing for shared data paths
between
encoders,
easing
basic
microprocessor bus interfacing.
Frequency Response:
50 kHz
Output Count Increase:
Clockwise rotation
(Option A); counter clockwise rotation
(Option B) See ordering information.
Positional Accuracy:
±0.5 LSB maximum
error
Termination:
8" 12-conductor ribbon cable
with 2x7 connector
Mounting:
Servo
Moment of Inertia:
9.5x10
-6
oz-in-sec
2
Acceleration:
1x10
5
radians per second
2
Environmental Ratings
Operating Temperature Range:
0 to 70°C
typical; -20°C to 100°C optional (contact
Grayhill for more information)
Thermal Shutdown:
Tambiant max. vs.
input voltage max. 40C°= 25.0v, 60°C =
20.0v, 80°C = 15.0v, 100°C = 10.0v (Total
load currents=30 mA)
Storage Temperature Range:
-40°C to
125°C
Humidity:
98% non-condensing
Vibration:
20g @ 50-500 CPS
Mechanical Shock:
50g @ 11mS duration
Mechanical Ratings
Maximum Shaft Speed:
8,000 RPM
Shaft Diameter:
0.125" (3,175mm)
Shaft Material:
Stainless steel
Bearings:
Radial ball bearing, R2 type
Radial Shaft Load:
2 lbs maximum
Axial Shaft Load:
1 lb maximum
Housing:
Carbon fiber composite (case
ground via connector)
Housing Volume Resistivity:
10
-2
ohm-cm
ELECTRICAL CONNECTIONS
Pin#
1
2
3
4
5
6
7
Gray
Code
COM
+V
G
0
G
1
G
2
G
3
G
4
Binary
Code
COM
+V
2
0
2
1
2
2
2
3
2
4
Pin#
8
9
10
11
12
13
14
Gray
Code
G
5
G
6
G
7
Case
CE’
N.C.
N.C.
Binary
Code
2
5
2
6
2
7
Case
N.C.
N.C.
N.C.
OPTIONS
Contact Grayhill for custom terminations and
temperature ratings.
Optical and Mechanical
Encoders
ORDERING INFORMATION
Series:
Resolution:
256 Absolute Positions
Voltage:
L = 5.0 ±5% Vdc, H = 5-26 Vdc
63A256-L-G-A
Output Count Increase:
A = shaft turned clockwise*, B = shaft turned counterclockwise* (*flange side view)
Output Option:
B = Binary, G = Gray Code
Available from your local Grayhill Component Distributor.
For prices and discounts, contact a local Sales Office, an authorized local Distributor,
or Grayhill.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Encoder
11
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