Optical Encoders
SERIES 61S
High Resolution, 5/8" Package
FEATURES
• Compact, 5/8" Package
• .125" or .250" Shaft Diameter
• 10 Million Rotational Cycles
• Compatible with CMOS, TTL and
HCMOS Logic
• Available in 50, 64, 75, 100 and 128
Quadrature Cycles per Revolution
• Choices of Cable Length and
Terminations
• Drop-In Industry Replacement
APPLICATIONS
• Audio Mixing Consoles
• Medical Equipment
• Test and Measurement Equipment
DIMENSIONS
In inches (and millimeters)
Pin Version: .125" Shaft
.625
(15,88)
SQUARE
.203
(5,16)
.375
(9,53)
DIA.
.125 ±.001
(3,18 ±0,03)
DIA.
.100 (2,54)
4 PLCS
61SXXX-1 DATE
.093
(2,36)
.746
±.020
(18.95
±0,57)
.250
(6,35)
.507
(12,88)
.625 ±.025
(15,88 ±0,64)
5 4 3 2 1
.445 ±.020
(11,30 ±0,51)
1/4-32
UNEF-2A
THREAD
.269 ±.025
(6,80 ±0,64)
.375 ±.020
(9,53 ±0,51)
Pin #5 - Ground
Pin #4 - NC
Pin #3 - Channel A
Pin #2 - +5 Volts
Pin #1 - Channel B
.025 ±.003 (0,64 ±0,08)
SQUARE 5 PLCS
61SXXX-1-XXX DATE
.740
(18,80)
MAX.
5 4 3 2 1
61SXXX-1 DATE
.746
±.020
(18,95
±0,51)
5 4 3 2 1
61SXXX-1-XXX DATE
.740
(18,80)
MAX.
5 4 3 2 1
Optical and Mechanical
Encoders
I-35
.250
(6,35)
.292 ±.020
(7,42 ±0,51)
.384 ±.025
(9,75 ±0,64)
Cable Version: .125" Shaft
DIM. XXX ±.300
(DIM. XXX ±7,62)
SEE ORDERING INFORMATION
.565 (14,35) MAX.
.445 ±.020
(11,30 ±0,51)
MOLEX CONNECTOR
14-56-3056
Top View
Front View
Side View
Pin Version: .250" Shaft
.625
(15,88)
SQUARE
.152
(3,86)
.250 ±.001
(6,35 ±0,03)
DIA.
C
.015x45˚
L
.100 (2,54)
4 PLCS
.219
±.003
(5,56
±0,08)
.445 ±.020
(11,30 ±0,51)
3/8-32
UNEF-2A
THREAD
.269 ±.025
(6,80 ±0,64)
.375 ±.020
(9,53 ±0,51)
Pin #5 - Ground
Pin #4 - NC
Pin #3 - Channel A
Pin #2 - +5 Volts
Pin #1 - Channel B
.025 ±.003 (0,64 ±0,08)
SQUARE 5 PLCS
.565 (14,35) MAX.
.445 ±.020
(11,30 ±0,51)
.033
(0,84) .066
(1,68)
.507
(12,88)
.250
(6,35)
.625 ±.025
(15,88 ±0,64)
.250
(6,35)
.292 ±.020
(7,42 ±0,51)
.384 ±.025
(9,75 ±0,64)
Cable Version: .250" Shaft
C
.015 x 45˚
L
(0,38 x 45˚)
DIM. XXX ±.300
(DIM. XXX ±7,62)
SEE ORDERING INFORMATION
Top View
Front View
MOLEX
CONNECTOR
14-56-3056
Side View
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical Encoders
CIRCUITRY AND WAVEFORM
C1
R2
A-
PHOTOSENSOR
Standard Quadrature 2-Bit Code
R3
OUTPUT A
R4
R3
OUTPUT B
R1 = 40.2 KΩ
R2 = 22 MΩ
R3 = 2.2 KΩ
R4 = 120
Ω
C1 = .047µF
C1
OUTPUT HIGH
B
LOW
1 CYCLE
V (BIAS)
OUTPUT
A
R3
HIGH
LOW
R1
R1
1
2
3
8
7
6
5
R2
R3
A+
B-
B+
R1
R1
+5V
GROUND
4
90˚
±45˚
ON 50, 64, 75, 100 AND 128
PULSE SWITCHES, CHANNEL "A"
LEADS CHANNEL "B" BY 90˚±45˚
IN THE CLOCKWISE DIRECTION.
LMV393
SPECIFICATIONS
Electrical Ratings
Operating Voltage:
5.0 ±.25 Vdc
Supply Current:
50 mA maximum at 5 Vdc
Logic Output Characteristics:
Output Type: 2-bit gray code with channel A
leading channel B by 90° ± 45° when the shaft is
turned clockwise
Power Consumption:
250 mW maximum
Rise/Fall Times:
(25" standard cable ASM/
13.3 PF measurement probe)
Rise Time: 1.0 microseconds typical
Fall Time: .440 microseconds typical
Rotational Torque:
1.5 in. oz. max.
Terminal Strength:
5 lbs terminal pull-out
force minimum (pinned version)
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.
Mechanical Ratings
Mechanical Life:
10 million revolutions
Mounting Torque:
20 in-lbs maximum
Operating Torque:
1.5 in-oz maximum
Shaft
Push Out Force:
50 lbs minimum
Materials and Finishes
Bushing:
Zinc plated brass
Housing:
Nylon (Hiloy 610B)
Shaft:
Stainless steel
Code Rotor:
Chemically etched stainless steel/
electroformed nickel
Printed Circuit Board:
NEMA Grade FR-4.
Five microinches minimum gold over 100
microinches minimum nickel over copper
Backplate:
Nylon (Hiloy 610B)
Header:
Phosphor bronze, 200 microinches tin
over 50 microinches nickel (pinned version)
Retaining Ring and Thrust Washers:
Stainless steel
Photo Sensor:
Planar silicon
Infrared Emitter:
Gallium aluminum arsenide
Cable:
26 AWG, stranded/tinned wire, PVC
coated on .100 (2,54) centers (cabled version)
Connector:
Housing: glass-filled polyester 94V-0 , black
Terminals: 15 microinches gold in select area
over 50 microinches minimum
Optical and Mechanical
Encoders
ORDERING INFORMATION
Series
Style:
S = unsealed, SS = sealed
Cycles:
per channel per revolution = 50, 64, 75, 100, 128
61S128-2-025
Termination:
Blank (no dash or numbers): pins as described in drawing.
Cable Termination: 020 = 2.0" minimum to 250 = 25" maximum. Provided in increments of 1/2".
Example: 035 = 3.5", 060 = 6".
Cable is terminated with standard Molex part no. 14-56-3056.
Use any standard .100 center 5-pin header to interface with cable.
Shaft/Bushing: 1
= 0.125" shaft and 0.250" bushing;
2
= 0.250" shaft and 0.375" bushing
Available from your local Grayhill Component Distributor.
For prices and discounts, contact a local Sales Office, an authorized local
Distributor, or Grayhill.
ACCESSORIES
Non-turn Washers
The Series 61S bushing 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 nonturn washer.
Part Number 50J1066:
302-2B stainless steel
Part number 12C1087-1:
cadium-plated
Part Number SHH694-11:
302-2B stainless
steel, no plating
to .040", when the switch is mounted. The
panel seal is silicon rubber. The shaft seal is an
o-ring per MIL–P–5516B.
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"
.625
±
.010 (15,89
±
0,25)
DIA.
OPTIONS
Contact Grayhill for custom terminations, shaft
and bushing configurations, and resolutions.
Control knobs are also available.
DIMENSIONS
In inches (and millimeters)
.400± .005 (10,16
±
0,13)
DIA.
.025
±
.001
(0,64
±
0,03)
90˚
±
1˚
.250
±
.003
(6,35
±
0,08)
.015
(0,38)
RADIUS
MAX.
.125
±
.005
(3,16
±
0,13)
.530
±
.005
(13,46
±
0,13)
.032
±
.002
(0,81
±
0,05)
.030
(0,76)
RADIUS
MAX.
90˚
±
1˚
.625
±
.010 (15,89
±
0,25)
DIA.
.437
+.010–.000
(11,10
+0,25–0,00)
90˚
±
1˚
.032
±
.002
(0,81
±
0,05)
C
L
C
L
.120
±
.003
(3,05
±
0,08)
.125
±
.010
(3,16
±
0,25)
.005
±.003
(0,38
±0,08)
RADIUS
.060
±
.001
(1,52
±
0,25)
.120
±
.003
(3,05
±
0,08)
.110
±
.003
(2,79
±
0,08)
Part Number: 50J1066 (.125" shaft)
Part Number: 12C1087-1 (.250" shaft)
Part Number: SHH694-11 (.250" shaft)
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
I-36
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