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 61K
High Resolution, 4-Pin
FEATURES
• 25, 32, 50, 64, 100, 128 and 256
Cycles per Revolution Available
• Sealed Version Available
• Rugged Construction
• Cable or Pin Versions
• 10 Million Rotational Life Cycles
• 300 RPM Shaft Rotation
DIMENSIONS
in inches (and millimeters)
RECOMMENDED PANEL CUTOUT
Pin Version
PIN & CABLE VERSION
1.250 DIA
(31.75)
.033
(.84)
.066
(1.68)
.161 ± .002
[ 4,09 ± 0,05 ]
Ø .380 ± .003
[ 9,65 ± 0,07 ]
.057 ± .002
[ 1,45 ± 0,05 ]
.550 DIA
(13.97)
MOUNTING
SURFACE
.219
(5.57)
.249/.250 DIA
(6.32/6.34)
.025 X 45˚
(.64)
CHAMFER
.350
(8.89)
3/8 - 32
UNEF-2A
THREADS
.725±.025
(18.4±0.64)
.250
(6.35)
GRAYHILL XXXX X-X
61kXXX
XXXX X-X
XX
.776± .025
(19.7± 0.64)
.501
(12.73)
PIN #1
.150
(3.81)
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.100
(2.54)
.300
(7.62)
.225
(5.71)
Linear ± .010
Diameter ± .025
Angle ± 2.0°
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical and Mechanical
Encoders
.152
(3.86)
KEYWAY DEPTH
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
DIMENSIONS
in inches (and millimeters)
Cable Version
.152
(3.86)
KEYW AY DEPTH
1.250 DIA
(31.75)
UNLESS OTHERWISE SPECIFIED, DIMENSION TOLERANCES ARE AS FOLLOWS:
LINEAR .010 (.25), DIAMETERS .010 (.25), ANGULAR 5˚
.033
(.84)
.066
(1.68)
.550 DIA
(13.97)
MOUNTING
SURF ACE
.219
(5.57)
.249/.250 DIA
(6.32/6.34)
.025 X 45˚
(.64)
CHAMFER
.350
(8.89)
3/8 - 32
UNEF-2A
THREADS
.725± .025
(18.4± 0.64)
.250
(6.35)
XXXX X-X
XX-XXX
GRA YHILL XXXX X-X
61KXXX-XXX
Optical and Mechanical
Encoders
PIN #1
.501
(12.73)
CONNECT OR IS
MOLEX P/N
14-56-3046
OR EQUIV ALENT
C IRCUITRY , TRUTH TABLE,
CABLE LENGTH
4.000,25
(4.000, 7)
AND W AVEFORM : Standard Quadrature 2-Bit Code
PIN #
GROUND
90 – 45
1
OUTPUT
A
OUTPUT B
2
OUTPUT
B
10 K Ω
OUTPUT A
3
1 CYCLE
10 K Ω
POWER 5V
CHANNEL A LEADS CHANNEL B BY
90 – 45 IN ALL ROTATIONS FOR
CLOCKWISE ROTATION OF SHAFT.
4
SPECIFICATIONS
Electrical Ratings
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 10K ohms pullup resistor Maximum Sink Current: 16 mA
at .40 volts
Power Consumption: 150 mW maximum
Optical Rise Time: 500 nS typical
Optical Fall Time: 16 nS typical
Mechanical Ratings
Mechanical Life: 10 million revolutions
Time Life: Guaranteed for 10 years of continuous
operation (calculated from emitter degradation
data)
Mounting Torque: 20 in-lbs maximum
Shaft Push Out Force: 100 lbs
Terminal Strength: 5 lbs terminal pull-out
force minimum
Solderability: 95% free of pin holes and voids
Operating Torque: 1.5 in-oz maximum (no
detents) for unsealed versions
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
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
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.
Shaft Seal: IP67 (61KS only)
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
Series 61R
High Resolution, 5-Pin
(Polarized Connection)
features
• 25, 32, 50, 64, 100, 128 and 256
Cycles per Revolution Available
• Sealed Version Available
• Rugged Construction
• Cable or Pin Version
• 10 Million Rotational Cycles
• 300 RPM Shaft Rotation
• Index Pulse Available
DIMENSIONS
in inches (and millimeters)
Pin Version
RECOMMENDED PANEL CUTOUT
PIN & CABLE VERSION
.161 ± .002
[ 4,09 ± 0,05 ]
.033
(.84)
.066
(1.68)
[ 9,65 ± 0,07 ]
.057 ± .002
[ 1,45 ± 0,05 ]
.550 DIA
(13.97)
MOUNTING
SURFACE
.219
(5.57)
Ø .380 ± .003
.025 X 45˚
(.64)
CHAMFER
.249/.250 DIA
(6.32/6.34)
.350
(8.89)
3/8 - 32
UNEF-2A
THREADS
.725±.025
(18.4±0.64)
.250
(6.35)
GRAYHILL XXXX X-X
61RXXX
XXXX X-X
XX
.776±.025
(19.7±0.64)
.501
(12.73)
PIN #1
.100
(2.54)
.200
(5.08)
.400
(10.16)
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.225
(5.71)
Unless otherwise specified, standard tolerance are:
Linear ± .010
Diameter ± .025
Angle ± 2.0°
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical and Mechanical
Encoders
.152
(3.86)
KEYWAY DEPTH
1.250 DIA
(31.75)
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
DIMENSIONS
in inches (and millimeters)
Cable Version
.152
(3.86)
KEYWAY DEPTH
1.250 DIA
(31.75)
UNLESS OTHERWISE SPECIFIED, DIMENSION TOLERANCES ARE AS FOLLOWS:
LINEAR .010 (.25), DIAMETERS .010 (.25), ANGULAR 5˚
.033
(.84)
.066
(1.68)
.550 DIA
(13.97)
MOUNTING
SURFACE
.219
(5.57)
.249/.250 DIA
(6.32/6.34)
.025 X 45˚
(.64)
CHAMFER
.350
(8.89)
3/8 - 32
UNEF-2A
THREADS
.725±.025
(18.4±0.64)
.250
(6.35)
GRAYHILL XXXX X-X
61RXXX-XXX
Optical and Mechanical
Encoders
.501
(12.73)
CONNECTOR IS
MOLEX P/N
14-56-3056
OR EQUIVALENT
XXXX X-X
XX-XXX
PIN #1
CABLE LENGTH
6.000, 25
(6.000, 7)
Circuitry, TRUTH TABLE, and Waveform: Standard Quadrature 2-Bit Code
PIN #
GROUND
5
90 – 45
NO CONTACT
4
OUTPUT
A
OUTPUT A
3
OUTPUT
B
10 KΩ
POWER 5V
1 CYCLE
2
CHANNEL A LEADS CHANNEL B BY
90 – 45 IN ALL ROTATIONS FOR
CLOCKWISE ROTATION OF SHAFT.
10 KΩ
OUTPUT B
1
SPECIFICATIONS
Electrical Ratings
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 10K ohms 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: 16 nS typical
Mechanical Ratings
Environmental Ratings
Mechanical Life: 10 million revolutions
Time Life: Guaranteed for 10 years of continuous
operation (calculated from emitter degradation
data)
Mounting Torque: 20 in-lbs maximum
Shaft Push Out Force: 100 lbs
Terminal Strength: 5 lbs terminal pull-out force
minimum
Solderability: 95% free of pin holes and voids
Operating Torque: 1.5 in-oz maximum (no
detents) for unsealed versions
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.
Shaft Seal: IP67 (61RS only)
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
nformation
Series
Style: K = Standard, 4-pin, high resolution
KS = Sealed, 4-pin, high resolution
R = Standard, 5-pin, high resolution
RS = Sealed, 5-pin, high resolution
Cycles: per channel per revolution = 25, 32, 50, 64, 100, 128, 256
61RS256 – 060
Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Dstributor or Grayhill.
Accessories
Non-Turn Washer
The Series 61 bushing is 3/8 inches in diameter
and has a non-turn keyway to prevent rotation of
the switch body when the panel is cut to fit.
Another way to keep the switch from turning is to
use a non-turn washer. The washer is cadmiumplated brass.
Part number: 12C1087‑1
Part number: SHH694-11, 302-2B stainless
steel, no plating
Dimensions
Shaft and Panel Seal
For shaft and panel seal version, the shaft is
sealed by an o-ring inside the bushing. The
panel is sealed by a flat gasket .045" thick at
the base of the bushing. The panel seals will
increase the behind panel dimension by .020"
to .040", when the switch is mounted. The panel
seal is silicon rubber.
In inches (and millimeters)
.625 ± .010 DIA.
(15,89 ± 0,25)
.625 ± .010
(15,88 ± 0,25) DIA.
.032 ± .002
(0,81 ± 0,05)
90˚ ± 1˚
.437 + .010 –.000
(11,10 + 0,25 –0,00)
90˚ ± 1˚
.005 ± .003
(0,38 ± 0,08)
RADIUS
CL
.125 ± .010
(3,16 ± 0,25)
.120 ± .003
(3,05 ± 0,08)
Part Number: 12C1087-1
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.032
± .002
(0,81
± 0,05)
.530 ± .005
(13,46 ± 0,13)
.030 (0,76)
RADIUS MAX.
.120 ± .003
(3,05 ± 0,08)
.110
± .003
(2,79
± 0,08)
Part Number: SHH694-11
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical and Mechanical
Encoders
Cable Termination: 060 = 6.0in. Cable is terminated with Molex Connector P/N 14-56-3056
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