ENS1J-B28-L00256L Datasheet, PDF (1/3 Pages) Bourns Electronic Solutions – EN - Rotary Optical Encoder

*RoHS ^COMPLIANT
Features
■ Two channel quadrature output
■ Bushing or servo mount
■ Square wave signal
■ Small size
■ Resolution to 256 PPR
■ CMOS and TTL compatible
■ Long life
■ Ball bearing option for high operating
speed up to 3000 rpm
■ RoHS compliant*
EN - Rotary Optical Encoder
Electrical Characteristics
Output................................................................................... 2-bit quadrature code, Channel A leads Channel B by 90 º (electrical) with clockwise rotation
Resolution............................................................................................................................................................................... 25 to 256 cycles per revolution
Insulation Resistance (500 VDC) .................................................................................................................................................................. 1,000 megohms
Electrical Travel .....................................................................................................................................................................................................Continuous
Supply Voltage.........................................................................................................................................................................................5.0 VDC ±0.25 VDC
Supply Current.............................................................................................................................................................................................. 26 mA maximum
Output Voltage
Low Output .................................................................................................................................................................................................0.8 V maximum
High Output.....................................................................................................................................................................................................4 V minimum
Output Current
Low Output ................................................................................................................................................................................................ 25 mA minimum
Rise/Fall Time..................................................................................................................................................................................................200 ns (typical)
Shaft RPM (Ball Bearing) ....................................................................................................................................................................... 3,000 rpm maximum
Power Consumption .................................................................................................................................................................................. 136 mW maximum
Pulse Width (Electrical Degrees, Each Channel) ............................................................................................................................................180 º ±45 º typ.
Pulse Width (Index Channel)................................................................................................................................................................................. 360 º ±90 º
Phase (Electrical Degrees, Channel A to Channel B)........................................................................................................................................90 º ±45 º typ.
Environmental Characteristics
Operating Temperature Range .......................................................................................................................................-40 ºC to +75 ºC (-40 °F to +167 °F)
Storage Temperature Range ..........................................................................................................................................-40 °C to +85 °C (-40 °F to +185 °F)
Humidity................................................................................................................................................................. MIL-STD-202, Method 103B, Condition B
Vibration ............................................................................................................................................................................................................................ 5 G
Shock............................................................................................................................................................................................................................... 50 G
Rotational Life
A & C Bushings (300 rpm maximum)**............................................................................................................................................10,000,000 revolutions
W, S & T Bushings (3,000 rpm maximum)** ..................................................................................................................................200,000,000 revolutions
IP Rating ..........................................................................................................................................................................................................................IP 40
Mechanical Characteristics
Mechanical Angle ........................................................................................................................................................................................ 360 ° Continuous
Torque (Starting and Running)
A & C Bushings (Spring Loaded for Optimum Feel) ..............................................................................................................1 N-cm (1.5 oz-in.) maximum
W, S & T Bushings (Ball Bearing Shaft Support) ..............................................................................................................0.07 N-cm (0.1 oz-in.) maximum
Mounting Torque...................................................................................................................................................1.7 to 2.0 N-cm (15 to 18 lb.-in.) maximum
Shaft End Play.................................................................................................................................................................. 0.30 mm (0.012 ”) T.I.R. maximum
Shaft Radial Play .............................................................................................................................................................. 0.12 mm (0.005 ”) T.I.R. maximum
Weight .......................................................................................................................................................................................................... 11 gms. (0.4 oz.)
Terminals ......................................................................................................................................................................Axial or radial pc pins or ribbon cable
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 trademark, name, part number, and date code.
Hardware ................................................................. One lockwasher and one mounting nut supplied with each encoder, except on servo mount versions.
**For resolutions ≤ 128 quadrature cycles per shaft revolution.
Quadrature Output Table
OUTPUT VOLTAGE
Channel A
Channel B
1 cycle
360 ° ± 90 °
Clockwise rotation
STANDARD RESOLUTIONS AVAILABLE
(Full quadrature output cycles per shaft revolution)
25*
125
50*
128
64
200
100
256
For Non-Standard Resolutions—Consult Factory
* Channel B leads Channel A
*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.