Optical and Mechanical
Encoders
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 Ratings
Operating Voltage: 5 Vdc, 60mA maximum,
resistive
Contact Resistance:
Less than 10 Ohms
Voltage Breakdown:
250 Vac between
mutually insulated parts
Contact Bounce:
Less than 4 mS at make
and less than 10 mS at break
Actuation Life: 3,000,000 operations
Actuation Force: Maximum actuation force
of 650 grams and a minimum force of 300
grams
Pushbutton Travel:
.010/.025
Mechanical Ratings
Life Expectancy:
1 million cycles of
operation; (1 cycle=360° rotation and return)
Rotational Torque:
10 in-oz. ±3 in-oz.
customs also available.
Shaft Pushout Force:
50 lbs. minimum
Mounting Torque: 20 in-lbs. maximum
Switch Ratings
Output:
One pulse per position per rotation
(360 degrees CW/CCW)
Operating Voltage:
5.0 ± .25 Vdc
Supply Current: 60mA maximum at 5 Vdc
Logic High:
3.8V minimum
Logic Low:
.8V minimum
Logic Rise and Fall Time: 30mS Typ.
Environmental
Operating Temperature Range: -40°C to
+85°C
Storage Temperature Range: -55°C to +
100°C
Vibration:
MIL-STD 202, Method 204,
Condition B
Mechanical Shock:
100g’s, 6 ms, Half Sine,
12.3 ft/s and 100g’s, 6 ms, Sawtooth, 9.7 ft/s
Humidity:
90-95% Relative Humidity at
40°C for 96 hours
Series
“M” Style
Angle of Throw: Detent
08 = 45° or 8 positions
10 = 36° or 10 positions
12 = 30° or 12 positions
61MXX-XX-XX
Termination:
01 = without terminal pins, 02 = with terminal pins
Pushbutton Option:
01 = without P.B., 02 = with P.B.
ORDERING INFORMATION
Available from your local Grayhill Component Distributor.
For prices and discounts, contact a local Sales Office, an authorized local
Distributor, or Grayhill.
Custom materials, styles, colors, and markings are available. Control knobs available.
CIRCUITRY, TRUTH TABLE, AND WAVEFORM
Standard Quadrature 2-Bit Code
Materials and Finishes
Code Housing: Nylon (Red) Hiloy 610
Detent Housing: Stainless Steel
Rotor:
Reinforced Thermoplastic, 30% Glass
Filled Polyester
Bushing:
Zinc Die Cast, Cadmium Plated
Shaft:
Stainless Steel
Detent Balls: 302 Stainless Steel
Through Bolts: 305 Stainless Steel
Through Bolt Nuts: Stainless Steel
Printed Circuit Boards: NEMA Grade FR-4
Terminals: Copper Alloy
Aperture: Chem Etched Stainless Steel and/
or Electroformed Nickel
Dome Retainer: Thermoplastic
Mounting Hardware: One Brass, cadmium-
plated nut and lockwasher supplied with each
switch
OPTIONS
Contact Grayhill for customer application needs.
P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12
1
2
3
4
5
6
7
8
9
10
11
12
POSITION
PIN NUMBER
Note:
Blank Indicates high state
Indicates low state
Code repeats every 12 positions
98 7 5 4 3 2 16
11
SWITCH SCHEMATIC
R1 R1 R1 R1 R1
R1
N.O. PUSHBUTTON
+5
G
10
12
13
14
15
16
PIN
#
Note: External pull-up resistors required for operation. 20ky is suggested.
Encoder
59
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