Optical Encoders
SERIES 61B
16, 24, or 32 Position,
Optional Pushbutton
FEATURES
• Positions Screen Cursor
• More Friendly than Keyboards
• Permits Visual Concentration
• Economic Touchscreen Alternative
• Pushbutton for Entry Function
• Detent for Tactile Feedback and
Minimal Backlash
• Optical Coupled for Long Life
• Rugged Construction
APPLICATIONS
Display Input
The Series 61 rotary encoder switch can move
cursor or icon on a display. Use the rotary and
pushbutton switch to simply select a menu
item and enter it, or write more elaborate
display software. Use the Series 61 to input
limit settings for a monitored function. Change
an item on a checklist to a new value while
viewing the remainder of the list.
Incremental Input
Use the Series 61 with an interface chip to
provide step by step input for setting radio
frequency, drill depth, RPM, etc. These changes
are usually a few steps, and you need not turn
the switch several revolutions for the desired
value. Some examples are as follows:
• Robot Position
• Volume Setting
• Radio Tuning
• Limit Setting
• Motor Control
Optical and Mechanical
Encoders
DIMENSIONS
In inches (and millimeters)
.859
±
.020
(22,1
±
0,5)
Diagram illustrates a 16-position switch with integral pushbutton switch.
A
±
3˚
.250
±
.002
(6,35
±
0,05)
DIA.
.375
±
.020
(9,5
±
0,5)
.152
±
.002
(3,86
±
0,05)
.015/ .040
(0,38/ 1,02)
TRAVEL
.769
±
.025
(19,5
±
0,6)
.312
±
.020
(7,9
±
0,5)
.200
±
.010
(5,1
±
0,5)
.050
±
.005
(1,3
±
0,1)
PIN 1
PIN 2
PIN 3
PIN 4
PIN 5
PIN 6
.562
±
.015
(14,3
±
0,4)
.767
±
.020
(19,48
±
0,51)
SQUARE
.219
±
.004
(5,6
±
0,1)
.066
±
.002
(1,68
±
0,05)
.250
±
.020
(6,4
±
0,5)
3/8-32 UNEF-2A THREAD
C
OF SWITCH
L
.100
±
.005
(2,5
±
0,1)
TYPICAL
.293
±
.010 (7,4
±
0,25)
C
OF SWITCH
L
C
OF PINS
L
*ANGLE A
Centerline of switch to
perpendicular of shaft flat
32 Pos.
24 Pos.
16 Pos.
5.63°
7.50°
11.25°
A ± 3˚
.250 ± .002
(6,35 ± 0,05)
DIA.
C
OF SHAFT FLAT
L
.025
±
.002 (0,6
±
0,1)
SQUARE PIN (6 PLACES)
Grayhill part number and date
code marked on label. Customer
part number marked on request.
.375 ± .020
(9,53 ± 0,51)
.152 ± .002
(3,86 ± 0,05)
.015/.040
(0,38/1,02)
TRAVEL
.950 (24,13) MAX.
.312 ± .020
(7,92 ± 0,51)
DIM. XXX* ± .30 (7,62)
.562
± .015
(14,27
± 0,38)
.219 ± .004
(5,56 ± 0,10)
.066 ± .002
(1,68 ± 0,05)
C
OF SWITCH
L
C
OF SHAFT FLAT
L
3/8-32 UNEF-2A THREAD
.250 ± .020
(6,35 ± 0,51)
Unless otherwise indicated, tolerances are ± .010 (0,25).
PIN #1
PIN #2
PIN #3
PIN #4
PIN #5
PIN #6
.767
± .020
(19,48
± 0,51)
SQUARE
*See Ordering Information
for cable length.
I-19
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical Encoders
SPECIFICATIONS
Pushbutton Switch Ratings
Rating:
5 Vdc, 10 mA, Resistive
Contact Resistance:
less than 10 (TTL or
CMOS Compatible)
Voltage Breakdown:
250 Vac between
mutually insulated parts.
Contact Bounce:
Less than 4 milliseconds at
make and less than 10 milliseconds at break
Actuation Life:
3,000,000 operations
Actuation Force:
Maximum actuation force
of 615 grams and a minimum actuation force
of 415 grams.
Operating Torque:
2.0 ± .75 in-oz
Rotational Life:
more than 1,000,000 cycles
of operation (1 cycle = 360° rotation and
return)
Shaft Push Out Force:
50 lbs minimum
Mounting Torque:
15 in-lbs maximum
Materials and Finishes
Detent Cover:
Thermosetting plastic
Bushing:
Zinc casting, cadmium-plated per
QQP–416, Class 2, Type II
Shaft:
Reinforced thermoplastic
Note: Earlier
versions may have electropolished stainless
steel shafts (still available in customs only).
Detent Balls:
Passivated, stainless steel
Detent Spring:
Tinned music wire
Printed Circuit Boards:
NEMA Grade FR-4
Board Terminals:
Copper alloy, CDA No. 725
Through Bolts:
Stainless steel, unplated
Through Bolt Nuts:
Stainless steel
Switch Assembly Cover and Code Rotor:
PBT polyester thermoplastic
Mounting Hardware:
One brass, cadmium-
plated nut and lockwasher supplied with each
switch. Nut is 0.094" thick by 0.562" across flats.
Strain Relief:
PBT polyester thermoplastic
(cable version only)
Cable:
26 AWG, stranded/tinned wire, PVC
coated on .100 (2,54) centers (cable version
only)
Optical and Mechanical
Encoders
Environmental Ratings
Operating Temperature Range:
-40°C to 85°C
Storage Temperature Range:
-55°C to 100°C
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.
Relative Humidity:
90–95% at 40°C for 96
hours
Encoder Ratings
Coding:
2-bit quadrature coded output
Operating Voltage:
5 ±.25 Vdc
Supply Current:
30 mA maximum at 5 Vdc
Logic High:
3.8V minimum
Logic Low:
0.8V maximum
Logic Rise and Fall Times:
Rise Time less
than 30 mS at 16.6 RPM. Fall Time less tham
30 mS at 16.6 RPM.
CIRCUITRY, TRUTH TABLE, AND WAVEFORM: Standard Quadrature 2-Bit Code
PIN#
POWER +5V
R*
OUTPUT A
R*
OUTPUT B
6
5
4
3
2
1
OUTPUT
A
Clockwise Rotation
Position Output A Output B
1
150Ω
2
3
4
•
•
•
•
indicates
•
Indicates logic high; blank positions. logic
low. Code repeats every 4
HIGH
LOW
HIGH
LOW
1
2
3
4
5
6
N.O.
PUSHBUTTON
SWITCH
GROUND
OUTPUT
B
*EXTERNAL PULL UP RESISTORS REQUIRED FOR OPERATION. 8.2 kΩ
IS SUGGESTED FOR TTL; 3.3 kΩ IS SUGGESTED FOR CMOS
POSITION NUMBER
ORDERING INFORMATION
Series
Style:
B = Standard, unsealed
Angle of Throw:
11 = 11.25° or 32 Positions
15 = 15° or 24 Positions
22 = 22.25° or 16 Positions
Coding:
01 = Quadrature
Pushbutton Option:
01 = Without pushbutton, 02 = With pushbutton
61B11–01–02–020
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 inches. Cable is terminated with standard Amp Connector
640442-6. Use any 6 position, .100 center header to mate with the cable assembly. Contact Grayhill
Custom shaft and bushing lengths, shaft/panel seal, and additional supply voltages are available through Grayhill only.
Control knobs available, see page I-57.
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
ACCESSORIES
See page I-41.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
I-20
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