Optical Encoders
CIRCUITRY AND WAVEFORM: Standard Quadrature 2-Bit Code
PIN #
1 CYCLE
GROUND
1
OUTPUT
A
OUTPUT B
2
10 KΩ
OUTPUT
B
OUTPUT A
3
4.7 KΩ
CHANNEL A LEADS CHANNEL B BY
90˚ ± 45˚ IN ALL ROTATIONS FOR
CLOCKWISE ROTATION OF SHAFT.
10 KΩ
POWER 5V
4
SPECIFICATIONS
Electrical Ratings
Environmental Ratings
Materials and Finishes
Operating Voltage: 5.0 ±.25 Vdc
Supply Current: 30 mA maximum at 5 Vdc
Logic Output Characteristics:
Output Type: Open collector with integrated
Schmitt Trigger and 10 KΩ pull-up resistor
Maximum Sink Current: 16 mA at .40 volts
Power Consumption: 150 mW maximum
Optical Rise Time: 500 nS typical
Optical Fall Time: 14 nS typical
Operating Temperature Range: -40°C to 85°C
Storage Temperature Range: -55°C to 100°C
Relative Humidity: 90-95% at 40°C for 96
hours
Vibration Resistance: Harmonic motion with
amplitude of 15g, within a varied 10 to 2000
Hz frequency for 12 hours per MIL-STD-202,
Method 204
Shock Resistance: Test 1: 100g for 6 mS,
half-sine wave with velocity change of 12.3 ft/s.
Test 2: 100g for 6 mS, sawtooth wave with
velocity change of 9.7 ft/s.
Bushing: 6262-T9 aluminum alloy
Housing: Hiloy 610B
Code Rotor and Aperture: Chemically etched
stainless steel/electroformed nickel
Printed Circuit Board: NEMA Grade FR-4.
Five microinches minimum gold over 100
microinches minimum nickel over copper
Optical Barrier: Polyphenylene sulfide, 94 V-0
Backplate: Polyester
Header: Phosphor bronze, 200 microinches
tin over 50 microinches nickel (pin version
only)
Infrared Emitter: Gallium aluminum arsenide
Photo IC: Planar silicon
Retaining Ring: Stainless steel
Cable: 26 AWG, stranded/tinned wire, PVC
coated on .100 (2,54) centers (cable version
only)
Mechanical Ratings
Mechanical Life: 300 million revolutions
Time Life: Guaranteed for 10 years of
continuous operation (calculated from emitter
degradation data)
Mounting Torque: 20 in-lbs maximum
Terminal Strength: 5 lbs terminal pull-out
force minimum
Solderability: 95% free of pin holes and voids
Operating Torque: 0.5 in-oz maximum (no
detents) for unsealed versions
Externally Applied Shaft Force: Axial: 15 lbs
maximum; Radial: 15 lbs maximum
Connector: Glass-filled PCT, UL94V-0
Bearing Subassembly
Bearing: NSK ABEC 5 (stainless steel)
Preload Collar: 303 (stainless steel)
Spacer: 303 (stainless steel)
Bellville Spring: spring steel (stainless steel)
ORDERING INFORMATION
Series
Style: K = Standard, 4-pin, high resolution
KS = Sealed, 4-pin, high resolution
Cycles: per channel per revolution = 25, 32, 50, 64, 100, 128, 256
63KS256–020
Termination:
Blank (no dash or numbers): pins as described in drawing.
Cable Termination: 020 = 2.0 inches minimum to 250 = 25 inches maximum. Provided in increments of 1/2
inch. (Example 035 = 3.5", 060 = 6".) Cable is terminated with standard Molex part no. 14-56-3046. Use any
standard .100 center 4-pin header to interface with cable. Recommended to be mounted with Molex
header part no. 70543-0003 or 70553-0003.
Control knobs available, see page E-39.
Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
E-27
Grayhill, Inc. • 5 6 1 Hillgrove Avenue • LaGrange, Illinois 6 0 5 2 5 -5 9 9 7 • USA • Phone: 7 0 8 -3 5 4 -1 0 4 0 • Fax: 7 0 8 -3 5 4 -2 8 2 0 • www.gr ayhill.com
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