Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Optical Encoders
SERIES 62A,V,D
1/2'' Package
FEATURES
• Low Cost
• Long Life
• Available in 3.3 or 5.0 Vdc
Operating Voltages
• High Torque Version
to Emphasize Rotational Feel
• Economical Size
• Optically Coupled
for More than a Million Cycles
• Optional Integral Pushbutton
• Compatible with CMOS, TTL
and HCMOS Logic Levels
• Available in 12,16, 20, 24 and 32
Detent Positions (Non-detent also
available)
• Choice of Cable Lengths and
Terminations
APPLICATIONS
• Global Positioning/Driver
Information Systems
DIMENSIONS in inches (and millimeters)
Optical and Mechanical
Encoders
Cable Version
Ø.250±.002
(6,35±0,05)
.250
(6,35)
3/8-32 UNEF-2A THREAD
THREADS TO BE WITHIN
.030 (0,76) OF SHOULDER.
Dim A = .250 (6,35) for 62A and 62V
.290 (7,37) for 62D
Dim B = .540 (13,72) for 62A and 62V
.580 (14,73) for 62D
.375±.015
(9,52±0,38)
.312
(7,92)
Dim B
.510±.015
(12,95±0,38)
.525±.015
(13,34±0,38)
62AXX-XX-XXXC
XXXX X-X
GRAYHILL
.250
(6,35)
654321
.500
(12,70)
.066±.002
(1,68±0,05
.152±.002
(3,9±0,05)
.219±.003
(5,6±0,08)
.390
(9,91)
Pin Version
.540
(13,72)
Ø.250 ±.002
(6,32±0,05)
.250
(6,35)
.066 ±.002
(1,68±0,05)
.375 ±.015
(9,52±0.38)
.250
(6,35)
.500
(12,70)
Dim A
3/8-32 UNEF-2A THREAD.
THREADS TO BE WITHIN
.030 (0,76) OF SHOULDER.
.250
(6,35)
.312
(7,9)
GRAYHILL
.602
(15,29)
.152±.002
(3,9±0,05)
654321
.219±.003
(5,6±0,08)
.522
.100
(2,54)
TYP.
.817
(20,8)
.797
(20,2)
62AXX-XX-P
XXXX X-X
.450±.010
(11,43±0,3)
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.940±.050
(24,0±1,3)
.470±.020
(12,0±0,5)
.140±.015
(3,6±0,4)
.620
(15,7)
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Optical Encoders
TERMINATION OPTIONS
S - STRIPPED CABLE , 0.050" CENTERS
C - CONNECTOR , 0.050" CENTERS
Optical and Mechanical
Encoders
CH - CONNECTOR , 0.100" CENTERS
SH - STRIPPED CABLE, 0.100" CENTERS
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
P - PIN, 0.100" CENTERS
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Optical Encoders
SUPPLY CURRENT & LOGIC OUTPUT CHARACTERISTICS
WAVEFORM AND TRUTH TABLE Standard Quadrature 2-Bit Code
Optical and Mechanical
Encoders
CIRCUITRY: SURFACE MOUNT OPTICS Pushpull Outputs (62A22, 62A15, 62A11)
CIRCUITRY: WIREBOND OPTICS Open Collector Outputs (All Others)
PIN #
POWER +5V
6
R*
5
OUTPUT A
R*
OUTPUT B
4
N.O.
PUSHBUTTON
SWITCH
3
GROUND
1
2
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Optical Encoders
SPECIFICATIONS
Electrical and Mechanical Ratings
Optical and Mechanical
Encoders
Pushbutton Rating: 5 Vdc, 10 mA, resistive
Pushbutton Contact Resistance: less than
10 ohms (TTL or CMOS compatible)
Pushbutton Life: 3 million actuations min.
Pushbutton Contact Bounce: less than 4
mS at make and less than 10 mS at break
Pushbutton Actuation Force: 1000 ±300
grams
Pushbutton Travel: .010/.025 inch
Coding: 2-bit quadrature coded output
Voltage Breakdown: 250 Vac between
mutually insulated parts
Rotational Life: 1,000,000 cycles minimum
(One cycle is a rotation through all positions
and a full return)
Optical Rise and Fall Times: less than 30 mS
maximum
Operating Torque:
Style A and V: 2.0 ±1.4 in-oz. initially
Style D: 3.5 ±1.4 in-oz initially
Non-detent: less than 1.5 in-oz initially
Shaft Push Out Force: 45 lbs minimum
Mounting Torque: 15 in-lbs maximum
Terminal Strength: 15 lbs cable pull-out force
minimum
Operating Speed: 100 RPM maximum
Axial Shaft Play: .010 maximum
Environmental Ratings
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
Mechanical Shock: Test 1: 100G for 6 mS,
half sine, 12.3 ft/s; Test 2: 100G for 6 mS,
sawtooth, 9.7 ft/s
0.435 inches across flats.
Rotor: Thermoplastic
Code Housing: Thermoplastic
Pushbutton Dome: Stainless steel
Dome Retaining Disk: Thermoplastic
Pushbutton Housing: Thermoplastic
Phototransistor: Planar Silicon NPN
Infrared Emitter: Gallium aluminum arsenide
Pushbutton Contact: Brass, nickel-plated
Flex Cable: 28 AWG, stranded/top coated wire,
PVC coated on .050 or .100" centers (cabled
version)
Header Pins: Phospher bronze, tin-plated
Spacer: ABS
Backplate/Strain Relief: Stainless steel
Materials and Finishes
Code Housing: Reinforced thermoplastic
Shaft: Zinc or aluminum
Bushing: Zinc casting
Shaft Retaining Ring: Stainless steel
Detent Spring: Stainless steel
Printed Circuit Boards: NEMA grade FR-4
gold over nickel or palladium
Terminals: Brass, tin-plated
Mounting Hardware: One brass, nickel-plated
nut and zinc-plated spring steel with clear
trivalent chromate finish lockwasher supplied
with each switch. Nut is 0.094 inches thick by
Suggested Mounting Panel Cutout
.161 ± .002
[ 4,09 ± 0,05 ]
Ø .380 ± .003
[ 9,65 ± 0,07 ]
.057 ± .002
[ 1,45 ± 0,05 ]
ORDERING INFORMATION
62A22-01-040S
Series
Style: A = 1/2" package, 5.0 Vdc Input, D = high torque w/5.0 Vdc input, V = 3.3 Vdc input
Angle of Throw:
Detent
Non-detent (Styles A&V only)
11 = 11.25° or 32 positions
01 = 11.25° or 32 positions
15 = 15° or 24 positions
05 = 15° or 24 positions
18= 18° or 20 positions
08= 18° or 20 positions
22 = 22.5° or 16 positions
02 = 22.5° or 16 positions
30 = 30° or 12 positions
03 = 30° or 12 positions
Pushbutton Option: 01 = w/o pushbutton, 02 = with pushbutton
Termination: S = Stripped cable; .050" centers
SH = Stripped cable; .100" centers
C = Connector; .050" centers
CH = Connector; .100" centers
P = Pin; .100" centers
Cable Length: Cable Terminination: 040 = 4.0in. Cable is terminated with
Amp P/N 215083-6. See Amp Mateability Guide for Mating Connector details.
*Eliminate cable length if ordering pins. (Ex: 62A22-02-P).
These switches have Quadrature 2-bit code output and an optional shaft actuated pushbutton switch.
Custom materials, styles, colors, and markings are available. Control knobs available.
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
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Optical Encoder Engineering Information
QUADRATURE
All Grayhill encoders use quadrature
output code, which is the same as a 2-bit,
repeating gray code. Quadrature is the most
popular and cost effective output format
because only two detectors are required.
However, quadrature can only be used in applications where incremental data is required.
Absolute positioning is not possible because
the code repeats every four positions. In other
words, changes in the encoder in magnitude
and direction can be determined, but the
actual position of the encoder cannot. In most
applications this is not a problem.
In a quadrature rotary optical encoder
two detectors are used to provide outputs,
“A” and “B”. The code rotor either blocks the
infrared light or allows it to pass to the detectors. As the shaft turns the rotor, the outputs
change state to indicate position. The resulting output is two square waves which are 90°
out of phase.
OPEN COLLECTOR OUTPUT
The open collector output is typical of
the Series 61B, 61C and 62, and is the simplest form of output available. The first step
in interfacing with open collector outputs is to
provide an external pull-up resistor from each
output to the power source. These pull-up
resistors provide the output with the high-state
voltage when the phototransistor is “off”.
In a phototransistor, base current is
supplied when light strikes the detector, which
effectively grounds the output. Typically, the
detector is operated in saturation. This means
sufficient light is provided to completely sink,
or ground, all the current provided by the
pull up resistor plus that of the interfacing
electronics. In the logic high state, the light
is sufficiently blocked by the rotor and the
detector functions like an open circuit. The
pull up resistor then provides sourcing current
to the interfacing electronics. This “on” or “off”
digital arrangement allows the open collector to interface with popular integrated circuit
technologies such as TTL, TTL LS, CMOS,
and HCMOS.
SCHMITT TRIGGERS
To provide signal enhancement it is
recommended that a Schmitt Trigger be connected to each output. This device is already
included in the Series 61K, 61R, 63K and 63R
encoders. The Schmitt Trigger “cleans up” the
output into a pure digital signal. It does this
by removing the small linear region between
the “on” and “off” states of the detector. During this transition the light is only partially
blocked and the output is somewhere between what the interfacing circuit might con-
Open Collector Output
PHOTOTRANSISTOR
AS AN OPEN SWITCH
POWER
SOURCE
CURRENT
FLOW
HIGH
OUTPUT
LEVEL
TO NEXT
OUTPUT
STAGE
PHOTOTRANSISTOR
EXTERNAL
PULL-UP
RESISTOR
OUTPUT
PHOTOTRANSISTOR
www.grayhill.com
UPPER
THRESHOLD
A shaft and panel seal are available to
provide water-tight mounting for the Series
61B, 61D, 61K, 61R and 62 encoders. Sealing
is accomplished by an o-ring shaft seal and
a panel seal washer. The panel seal washer
in the 61B and 61D encoders does not affect
the overall dimensions of the switches. In
the 61K and 61R encoders, the .045" thick
washer is placed over the threads and sits flat
on the base of the bushing. The 61KS and
61RS are also epoxy-sealed on the bottom
of the switch to provide a completely sealed
switch.
LIGHT
BLOCKED
LIGHT
PARTIALLY
BLOCKED
LIGHT
DETECTED
LOWER
THRESHOLD
INPUT TO
SCHMITT
TRIGGER
OUTPUT
FROM
SCHMITT
TRIGGER
OUTPUT
LOW
OUTPUT
HIGH
OUTPUT
LOW
POWER
SOURCE
POWER
SOURCE
CURRENT
FLOW
SHAFT AND PANEL SEAL
Schmitt Trigger
EXTERNAL
PULL-UP
RESISTOR
PHOTOTRANSISTOR
AS A CLOSED SWITCH
sider to be “on” or “off”. In other words, the
output is not completely digital. The Schmitt
Trigger contains a very important feature
which makes it attractive for this application.
The device has a higher threshold, or trigger
level, when it is in the “on” state than it does
in the “off” state. This hysterisis filters any
electrical noise, which can cause the output
to change state rapidly during the transition.
And since the output from the Schmitt Trigger
is a pure digital signal and is isolated from the
phototransistor, the signal is basically immune
to loading problems that can effect encoders
without the Schmitt Trigger. Schmitt Triggers
are available in most popular IC technologies.
LOW
OUTPUT
LEVEL
TO NEXT
STAGE
EXTERNAL
PULL-UP
RESISTOR
SCHMITT
TRIGGER
OUTPUT
PHOTOTRANSISTOR