Optical Encoders
WAVEFORM AND TRUTH TABLE Standard Quadrature 2-Bit Code
Clockwise Rotation
HIGH
Position
Output A
Output B
OUTPUT "A"
LOW
1
2
3
4
•
•
HIGH
OUTPUT "B"
LOW
•
•
1
2
3
4
5
6
POSITION NUMBER
Indicates logic high; blank indicates
•
logic
low. Code repeats every 4 positions.
SPECIFICATIONS
Rotary Electrical and Mechanical
Ratings
Operating Voltage: 5.00 ± 0.25 Vdc
Supply Current: 20 mA maximum at 5 Vdc
Output: Open collector phototransistor.
External pull up resistors are required
Output Code: 2-Bit quadrature, channel A
leads channel B by 90° electrically during
clockwise rotation of the shaft
Resistors: Metal oxide on ceramic substrate
Solder Pins: Phosphor bronze plated with
tin/lead over nickel
Shaft: Polyamide polymer (nylon 6/10 alloy)
with stainless steel insert
Detent Balls: Carbon steel plated with nickel
Detent Springs: Music wire plated with tin
Code Rotor: 33% Glass reinforced nylon 66
Pushbutton Dome: Stainless steel
Pushbutton Dome Retainer: Polycarbonate
Joystick Housing: Polyamide polymer
(nylon 6/10 alloy)
Joystick Contact: Stainless steel, silicone
rubber, brass with silver cladding, high-temp
thermoplastic, phosphor bronze with silver
cladding
Cable: Copper stranded with plating in PVC
insulation
Connector: PA 4.6 with tin/lead plated
phosphor bronze
Lockwashers: Stainless steel with passivate
finish
Hex Nuts: 303 Stainless steel
Label: TT406 Thermal transfer cast film
Solder: 60/40 Tin lead, no clean, low residue
flux
Joystick Electrical and Mechanical
Ratings
Supply Current: 5 mA maximum
Output Code: 2-Bit
Logic Output Characteristics:
Neutral: 2.5 ± 0.5 Vdc
High: > 4.5 Vdc
Low: < 0.5 Vdc
Angle of Throw: 8° ± 2° in all directions
Life: 500,000 actuations in each direction
Logic Output Characteristics:
High: No less than 3.5 Vdc
Low: No greater than 1.0 Vdc
Environmental Ratings
Operating Temperature Range: -40°C to
85°C
Storage Temperature Range: -55°C to
100°C
Relative Humidity: 96 hours at 90-85%
humidity at 40°C
Vibration: Harmonic motion with amplitude
of 15g, within a varied 10 to 2000 Hz
frequency for 12 hours
Minimum Sink Current: 2.0 mA
Power Consumption: 100 mW maximum
Mechanical Life: 1 million rotational cycles
of operation (1 cycle is a rotation through all
positions and a full return)
Average Rotational Torque: 2.0 ± 1.0 in-
oz initially, torque shall be within 50% of
initial value throughout life
Mounting Torque: 15 in-oz maximum
Shaft Push-Out Force: 45 lbs minimum
Shaft Pull-Out Force: 45 lbs minimum
Terminal Strength: 15 lbs terminal pull-out
force minimum for cabled and header
termination
Mechanical Shock:
Test 1: 100g for 6ms half-sine wave with a
velocity change of 12.3 ft/s
Test 2: 100g for 6ms sawtooth wave with a
velocity change of 9.7 ft/s
Mounting Nut: Polyurethane
Lubricating Grease: Nye nyogel 774L
Solderability: 95% free of pin holes and voids
Materials and Finishes
Assembly Studs: 305 Stainless steel
Detent Housing: Polyamide polymer (nylon
6/10 alloy)
Printed Circuit Boards: Glass cloth epoxy
double clad with copper gold over nickel
plated
Infrared Emitting Diode Chips: Gallium
aluminum arsenide
Silicon Phototransistor Chips: Gold and
aluminum alloys
Pushbutton Electrical and
Mechanical Ratings
Rating: 10 mA at 5 Vdc resistive
Contact Resistance: less than 10 ohms
Life: 1 million actuations minimum
Contact Bounce: < 4 mS make, 10 mS
break
OPTIONS
Contact Grayhill for custom terminations,
rotational torque, number of positions, shaft
configurations, and resolutions. Control knobs
are also available.
Actuation Force: 400 ± 150 grams force
ShaftTravel: 0.020 ± 0.010 inches
ORDERING INFORMATION
Series
Angle of Throw: Detent: 18 = 18° or 20 positions; Non-detent: 08 = 18° or 20 positions;
Non-Turn: 00 = Joystick and Pushbutton only
Joystick Contacts: 2 = 2 Discrete Contacts
4 = 4 Discrete Contacts
60A18-4-020S
8 = 4 Contacts in 8 possible directions
Termination: S = Stripped cable; .050" centers; C = Connector; .050" centers; P = Pin; .050" centers
Cable Length*: 020 = 2.0" minimum to 250 = 25.0" maximum. Provided in increments of 1/2".
Example: 035 = 3.5", 060 = 6".
*Eliminate cable length if ordering pins (Ex: 60A18-4-P)
Available from your local Grayhill Component Distributor. For prices and discounts, contact a local Sales Office, an authorized local
Distributor, or Grayhill.
I-2 6
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.grayhill.com
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