Optical Encoder. ENS1J-B28-W00100 Datasheet

ENS1J-B28-W00100 Encoder. Datasheet pdf. Equivalent


Bourns ENS1J-B28-W00100
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.


ENS1J-B28-W00100 Datasheet
Recommendation ENS1J-B28-W00100 Datasheet
Part ENS1J-B28-W00100
Description Rotary Optical Encoder
Feature ENS1J-B28-W00100; *RoHS COMPLIANT Features ■ Two channel quadrature output ■ Bushing or servo mount ■ Square wave si.
Manufacture Bourns
Datasheet
Download ENS1J-B28-W00100 Datasheet




Bourns ENS1J-B28-W00100
EN - Rotary Optical Encoder
Dimensional Drawings
2.54
(.100)
TYP.
Optional
Radial Leads
.635
(.025)
SQ.
18.5
(.73)
6.35
(.250)
15.88
(.625)
6.342 + .000/ – .0076 DIA.
(.2497 + .000/ – .0003)
3/8-32 UNEF
9.525
(.375)
8.636
(.34 )
1/4-32 UNEF
3.167 + .000/ – .0076 DIA.
(.1247 + .000/ – .0003)
Bushing Style C
10.32 + .000/ – .0508
(.4062 + .000/ – .002) DIA.
9.53
(.375)
7.14 + .000/ – .0508
(.281 + .000/ – .002) DIA.
9.53
(.375)
1.37
(.054)
2.36
(.093)21.21
(.835)
9.53
(.375)
R.
.254 ± .076
(.010 .003)
9.53
(.375)
1.57 3/8-32 UNEF
(.062)
6.342 + .000/ – .0076 DIA.
(.2497 + .000/ – .0003)
1.57 1/4-32 UNEF
(.062)
3.167 + .000/ – .0076 DIA.
(.1247 + .000/ – .003)
.787 ± .254
(.031 ± .010)
Bushing Style A
Bushing Style S
(Ball Bearing)
Bushing Style T
(Ball Bearing)
Anti-rotation Lug
View
TERMINATION DIAGRAM
CHANNEL A
CHANNEL B
GROUND N.C.
Vcc
21.8
(.86)
1.57
(.062)
1.57
(.062)
1.57
(.062)
3.167 + .000/ – .0076 DIA.
(.1247 + .000/ – .003)
Optional
Radial Leads
-A
+
B
19.05 ± .0127 DIA.
(.7500 ± .0005)
22.2 + .0127 / – .1270 DIA.
(.875 + .0005 / – .0050)
Servo Mount Style W (Ball Bearing)
Consult factory for options not shown,
including:
• Wire lead or cable options
• Connectors
• Non-standard resolutions
• Special shaft/bushing sizes and
features
• Special performance characteristics
• PCB mounting bracket
6.34
(.2497)
5.54
SHAFT
LENGTH
SHAFT FLAT
LENGTH
(DIM. F)
F
(.218)
12.7
2.54
(.050)
(.100)
15.9
(.625)
5.08
(.200)
19.1
(.750)
8.25
(.325)
22.2
(.875)
9.65
(.380)
Shaft End Style C
11.13
(.438)
2.54
(.100)
4
PLCS.
4.14
(.163)
18.11
(.713)
0.99
9 PLCS.(.039) DIA. MIN.
6.99
2 PLCS.(.275)
Recommended Board Layout
with Bracket
Bushing with Bracket
Axial Ribbon Cable Option
Radial Leads
—A +B
Radial Ribbon Cable Option
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Ribbon Cable Option Detail
Connector
Pinout
5
4
3
2
1
Connector
Pinout
5
4
3
2
1
DIMENSIONS:
MM
(INCHES)



Bourns ENS1J-B28-W00100
GENERAL INFORMATION
The Bourns® EN model is a self-contained rotary optical encoder.
It produces a 2-bit quadrature signal which is suitable for digital
systems where both magnitude and direction of adjustment must
be provided. The EN encoder is ideal for use as a digital panel
control or as a position sensing device in applications where long
life, reliability, high resolution and precise linearity are critical.
The EN series encoder converts rotary input into electrical signals
which can be used by microprocessors without A/D conversion.
EN - Rotary Optical Encoder
Bourns encoder output signals are square wave digital pulses which
do not require debounce circuitry. Both features make it possible
to significantly reduce the memory overhead, wiring and wiring inter-
connects required by other types of control devices.
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.
How To Order
BOURNS EN SERIES OPTICAL ENCODER
ENC1J-D28-L00128L
ANTI-ROTATION
LUG POSITION
Code Description
D None
J 9:00 Position
P Rear Mount-
ing Bracket
SWITCHING
CONFIGURATION
Code Description
Channel A
Leads
1 Channel B
By 90 °
(Clockwise
Rotation)**
SHAFT LENGTH*
Code Description
16 1/2 " Long
20 5/8 " Long
24 3/4 " Long
28 7/8 " Long
TERMINAL***
CONFIGURATION
Code Description
L Axial, Multi-
Purpose Pin
R Radial, Multi-
Purpose Pin
M Axial, Ribbon
& Connector
10 “
N Radial, Ribbon
& Connector
10 ”
W Axial, Ribbon
10 “ -
No Connector
Y Radial, Ribbon
10 ” -
No Connector
SHAFT STYLE
Use With
Code Description
Bushings (Code)
B 1/4 " Dia., Plain End
A, S
D 1/8 " Dia., Plain End
C, T, W
C 1/4 " Dia., Single
A, S
Flatted
RoHS IDENTIFIER
Code Description
L Compliant
RESOLUTION
Cycles Per
Code Revolution
00025
25
00050
50
00064
64
00100
100
00125
125
00128
128
00200
200
00256
256
BUSHING CONFIGURATION
Code Description
A 3/8 "D X 3/8 "L Threaded
C 1/4 "D X 1/4 "L Threaded
S 3/8 "D X 3/8 "L Threaded
(Ball Bearing)
T 1/4 "D X 3/8 "L Threaded
(Ball Bearing)
W Servo Mount 7/8 "D
(Ball Bearing)
* Shaft length measured from mounting surface.
** 25 and 50 PPR is reversed (Channel B leads Channel A).
*** Standard ribbon cable is 10 " long. Consult factory for other lengths.
REV. 06/12
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.







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