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Optical Encoders
SERIES 61C
16 or 32 Position with Pushbutton FEATURES * Competitively Priced to Similar Electromechanical Switches * Optically Coupled For More Than A Million Trouble-Free Rotations * Has Data Entry Pushbutton Switch Activated By Switch Shaft * Compatible With CMOS, TTL and HCMOS Logic * Operationally Used to Move Display Icon and Input Data * Used to Set Radio Frequency, Drill Depth, RPM, etc.
DIMENSIONS
Optical and Mechanical Encoders
In inches (and millimeters)
.521 .003 DIA. (O 13,23 0,08) .219 .003 (5,56 0,08) TO SHAFT FLAT
.152 .002 (3,86 0,05) TO BOTTOM OF KEYWAY ANGLE A 3*
.250 DIA. (O 6,35) .250 (6,35)
3/8-32 UNEF-2A THREAD
.750 .003 DIA. (O 19,05 0,08)
C L OF .750 DIA. (O 19,05) AND KEYWAY .525 .010 (13,34 0,25) PIN 6 5 4 3 2 1
BUSHING KEYWAY IS .066 .002 (1,68 0,05) WIDE
.040 (1,02) TO .070 (1,78) TRAVEL .375 (9,53)
.025 .002 (0,64 0,05) SQUARE PIN (6 PLACES) .100 .005 TYP. (2,54 0,13) .050 .005 TYP. (1,27 0,13) .629 .005 (15,98 0,13)
XX X
.420 (10,67) .140 (3,56) MAX. .100 (2,54) .728 (18,49)
.450 (11,43) .312 .020 (7,92 0,51)
*ANGLE A Centerline of switch to perpendicular of shaft flat 32 Pos. 16 Pos. 28.125 56.25
Grayhill part number and date code marked on label. Customer part number marked on request. Unless otherwise indicated, tolerances are .010 (0,25).
I-21
Grayhill, Inc. * 561 Hillgrove Avenue * LaGrange, Illinois
60525-5997 * USA * Phone: 708-354-1040 * Fax: 708-354-2820 * www.grayhill.com
LL 21
Optical Encoders
CIRCUITRY, TRUTH TABLE, AND WAVEFORM: Standard Quadrature 2-Bit Code
Clockwise Rotation Position Output A Output B 1 2 3 4
PIN # POWER +5V
6
R*
OUTPUT A
5
R*
150 5%
* *
OUTPUT B
4 3 2
* *
Indicates indicates * low. Codelogic high; blankpositions. logic repeats every 4
N.O. PUSHBUTTON SWITCH
OUTPUT A
HIGH LOW HIGH LOW 1 2 3 4 5 6
GROUND
1
* External pull-up resistors required for operation.
8.2 k is suggested for TTL; 3.3 k is suggested for CMOS.
OUTPUT B
POSITION NUMBER
Optical and Mechanical Encoders
SPECIFICATIONS
Pushbutton Switch Ratings
Rating: 5 Vdc, 10 mA, resistive Contact Resistance: less than 10 ohms (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 330 grams and a minimum actuation force of 250 grams. than 30 mS at 16.6 RPM. Fall Time less than 30 mS at 16.6 RPM. Operating Torque: 1.5 in-oz 30% initial (1.0 in-oz 50% after life for 32 position only) Rotational Life: more than 1,000,000 cycles of operation (1 cycle = 360 rotation and return) Shaft Push Out Force: 20 lbs minimum Mounting Torque: 10 in-lbs maximum
Materials and Finishes
Bushing: Reinforced thermoplastic Shaft: Reinforced thermoplastic Detent Balls: Steel, nickel-plated Detent and Pushbutton Springs: Tinned music wire Printed Circuit Boards: NEMA grade FR-4 Pushbutton Contact: Stainless steel, goldplated Board Terminals: Phosphor bronze, tin-plated Mounting Hardware: One brass, cadmiumplated nut and lockwasher supplied with each switch. Nut is 0.094 inches thick by 0.562 inches across flats. Rotor: Reinforced thermoplastic Aperture/Dome Retainer: Lexan 141, Polycarbonate
Environmental Ratings
Operating Temperature Range: -40C to 85C Storage Temperature Range: -55C to 100C Relative Humidity: 90-95% at 40C 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: Tested at 100g for 6 mS, half sine, 12.3 ft/s Test 2: 100g for 6 mS, sawtooth, 9.7 ft/s
Encoder Ratings
Coding: 2-bit quadrature coded output. Operating Voltage: 5.0 .25 Vdc Supply Current: 30 mA maximum at 5 Vdc Logic High: 3.8V for CMOS and 2.7V for TTL minimum. Logic Low: 0.8V maximum Logic Rise and Fall Times: Rise Time less
ORDERING INFORMATION
Series Style: C = Standard Angle of Throw: 00 = No detent 11 = 11.25 or 32 Positions 22 = 22.25 or 16 Positions Coding: 01 = Quadrature 61C22-01-04-02 Pushbutton Option: 01 = Without pushbutton, 02 = With pushbutton Number of Changes per Revolution: 04 for no detent and 22.25 angle of throw 08 for no detent and 11.25 angle of throw Custom 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-22

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