EAW0J-B24-AE0128L Datasheet, PDF (1/5 Pages) Bourns Electronic Solutions – Absolute encoder / absolute code output

*RoHS ^COMPLIANT
Features
■ Absolute encoder / absolute code output
■ Digital output
■ Sturdy construction
■ Bushing mount
■ Available with PC board mounting bracket (optional)
■ *RoHS compliant
EAW - Absolute Contacting Encoder (ACE^™)
General Information
Until now, the choice of an absolute
encoder meant an expensive, and larger-
sized product. Through the use of
combinatorial mathematics, the absolute
code pattern of the Bourns^® Absolute
Contacting Encoder (ACE^™) is placed on a
single track for a very economical, energy-
efficient and compact product. Bourns^®
ACE^™ provides an absolute digital output
that will also retain its last position in the
event of a power failure.
An intelligent alternative to incremental
encoders and potentiometers, the Bourns^®
ACE^™ is ideally suited for many industrial,
automotive, medical and consumer product
applications.
Recommended Control Diagram for ACE-128
1
8
2
7
“common” is either
on a decoded
C
C
“select” pin
3
6
(active low)
4
5
or at GND.
RESNET
4609X-
101-472
P1 P2 P3 P4 P5 P6 P7 P8
P
ACETAB:
256 byte
code
conversion
table (ROM)
Electrical Characteristics
Output...............................................................................................................................................................................8-bit code with 128 absolute states
Closed Circuit Resistance ...........................................................................................................................................................................5 ohms maximum
Open Circuit Resistance....................................................................................................................................................................... 100 K ohms minimum
Contact Rating.................................................................................................................................................. 10 milliamp @ 10 VDC or 0.1 watt maximum
Insulation Resistance (500 VDC) ...................................................................................................................................................1,000 megohms minimum
Dielectric Withstanding Voltage (MIL-STD-202 Method 301)
Sea Level............................................................................................................................................................................................ 1,000 VAC minimum
Electrical Travel .....................................................................................................................................................................................................Continuous
Contact Bounce (60 RPM)........................................................................................................................................................... 2.7 milliseconds maximum*
RPM (Operating) .............................................................................................................................................................................................. 120 maximum
Environmental Characteristics
Operating Temperature Range .......................................................................................................................................-40 ºC to +85 ºC (-40 °F to +185 °F)
Storage Temperature Range ..........................................................................................................................................-40 ºC to +85 ºC (-40 °F to +185 °F)
Humidity................................................................................................................................................................. MIL-STD-202, Method 103B, Condition B
Vibration .......................................................................................................................................................................................................................... 15 G
Contact Bounce ...........................................................................................................................................................................0.1 millisecond maximum
Shock............................................................................................................................................................................................................................... 50 G
Contact Bounce ...........................................................................................................................................................................0.1 millisecond maximum
Rotational Life.................................................................................................................................................................... 50,000 shaft revolutions minimum
IP Rating ..........................................................................................................................................................................................................................IP 40
Mechanical Characteristics
Mechanical Angle ........................................................................................................................................................................................ 360 ° Continuous
Running Torque .............................................................................................................................................................. 0.5 to 1.5 N-cm (0.75 to 2.50 oz-in.)
Mounting Torque.........................................................................................................................................................................79 N-cm (7 lb.-in.) maximum
Shaft Side Load (Static)....................................................................................................................................................................4.5 kg (10 lbs.) minimum
Weight ................................................................................................................................................................................ Approximately 14 gms. (0.50 oz.)
Terminals ................................................................................................................................................................................. Printed circuit board terminals
Soldering Condition
Manual Soldering................................................................................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
Wave Soldering ...........................................................................................................................................96.5Sn/3.0Ag/0.5Cu solder with no-clean flux
260 °C (500 °F) max. for 5 seconds
Wash processes .................................................................................................................................................................................... Not recommended
Marking...........................................................................................................................Manufacturer’s name and trademark, part number, and date code.
Hardware ................................................. One lockwasher and one mounting nut are shipped with each encoder, except where noted in the part number.
Packaging............................................................................................................................................................................................................. 45 pcs./tray
*High probability of missing quadrature codes with maximum bounce.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.