ENS2J-B28-L00128 Bourns Inc., ENS2J-B28-L00128 Datasheet

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ENS2J-B28-L00128

Manufacturer Part Number
ENS2J-B28-L00128
Description
ROTARY OPTICAL ENCODER
Manufacturer
Bourns Inc.
Datasheet

Specifications of ENS2J-B28-L00128

No. Of Channels
2
Rotational Speed Max
3000rpm
Supply Voltage Range
4.75VDC To 5.25VDC
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
Pulses Per Revolution
128 PPR
Termination Style
Solder Pin
Output
2 bit Gray Code
Shaft Type
1/4 in Diameter Plain
With Switch
With
Product
Optical
Sensor Supply Voltage
4.75VDC To 5.25VDC
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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
Output Current
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.
Index Channel Centered on 1-1 State Combination of A and B Channels ...............................................................................................................0 º ±45 º
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
IP Rating ..........................................................................................................................................................................................................................IP 40
Mechanical Angle ........................................................................................................................................................................................360 ° Continuous
Torque (Starting and Running)
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
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.
Electrical Characteristics
Environmental Characteristics
Mechanical Characteristics
Quadrature Output Table
Low Output .................................................................................................................................................................................................0.8 V maximum
High Output ....................................................................................................................................................................................................4 V minimum
Low Output ................................................................................................................................................................................................25 mA minimum
A & C Bushings (300 rpm maximum)** ........................................................................................................................................... 10,000,000 revolutions
W, S & T Bushings (3,000 rpm maximum)** ................................................................................................................................. 200,000,000 revolutions
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
Manual Soldering .................................................................................................................. 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
Wave Soldering...........................................................................................................................................96.5Sn/3.0Ag/0.5Cu solder with no-clean fl ux
Wash processes ....................................................................................................................................................................................Not recommended
Channel A
Channel B
(Optional)
Channel
Index
OUTPUT VOLTAGE
4.0 V (Min)
0.8 V (Max)
4.0 V (Min)
0.8 V (Max)
4.0 V (Min)
0.8 V (Max)
1 cycle
360 ° ± 90 °
Features
EN - Rotary Optical Encoder
Two channel quadrature output
Bushing or servo mount
Square wave signal
Index channel available
Small size
Resolution to 256 PPR
Clockwise rotation
1
0
1
0
1
0
Customers should verify actual device performance in their specifi c applications.
STANDARD RESOLUTIONS AVAILABLE
(Full quadrature output cycles per shaft revolution)
For Non-Standard Resolutions—Consult Factory
* Channel B leads Channel A
100
25*
50*
64
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
125
128
200
256
Specifi cations are subject to change without notice.
370 °C (700 °F) max. for 3 seconds
260 °C (500 °F) max. for 5 seconds

Related parts for ENS2J-B28-L00128

ENS2J-B28-L00128 Summary of contents

Page 1

Electrical Characteristics Output .................................................................................2-bit quadrature code, Channel A leads Channel 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 ...

Page 2

Additional Features ■ CMOS and TTL compatible ■ Long life ■ Ball bearing option for high operating speed up to 3000 rpm EN - Rotary Optical Encoder Dimensional Drawings Optional 18.5 Radial Leads 2.54 (.73) TYP. .635 (.100) SQ. (.025) ...

Page 3

... EN optical encoders offer a useful rotational life of from 10 million to 200 million shaft revolutions, making them ideal for extended service applications. The Bourns encoder is also compact and well suited for situations where the available space is limited ...

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