ENA1D-B20-L00128L Datasheet ENS1J-B28-L00100L, ENT1J-D28-L00100L, ENA1D-B20-L00064L | P1-P3

Features

n Two channel quadrature output

n Bushing or servo mount

n Square wave signal

n Small size

n Resolution to 256 PPR

n CMOS and TTL compatible

n Long life

n Ball bearing option for high operating

speed up to 3000 rpm

n RoHS compliant*

EN - Rotary Optical Encoder

*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.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁc applications.

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

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-m (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 ux

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

Clockwise rotation

360 ° ± 90 °

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 COMPLIANT

LEAD FREE

*RoHS COMPLIANT

VERSIONS

AVAILABLE

LEAD FREE

VERSIONS ARE

RoHS COMPLIANT*

Speciﬁcations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁc applications.

EN - Rotary Optical Encoder

Dimensional Drawings

Optional

Radial Leads

GROUND

N.C.

Vcc

CHANNEL B

CHANNEL A

TERMINATION DIAGRAM

2.54

(.100)

TYP.

SQ.

1/4-32 UNEF

DIA.

3/8-32 UNEF

1/4-32 UNEF

Optional

Radial Leads

Bushing Style C

Bushing Style S

(Ball Bearing)

Bushing Style A Shaft End Style C

Bushing Style T

(Ball Bearing)

Servo Mount Style W (Ball Bearing)

9.525

(.375)

.635

(.025)

18.5

(.73)

6.35

(.250)

6.34

(.2497)

5.54

(.218)

3.167 + .000/ – .0076

(.1247 + .000/ – .0003)

8.636

(.34 )

4 PLCS.

2 PLCS.

Recommended Board Layout

with Bracket

Bushing with Bracket

Radial Leads

Axial Ribbon Cable OptionRadial Ribbon Cable Option

Ribbon Cable Option Detail

Connector

Pinout

Connector

Pinout

18.11

(.713)

11.13

(.438)

4.14

(.163)

2.54

(.100)

6.99

(.275)

9 PLCS. DIA. MIN.

0.99

(.039)

15.88

(.625)

1.37

(.054)

21.21

(.835)

2.36

(.093)

9.53

(.375)

6.342 + .000/ – .0076

(.2497 + .000/ – .0003)

10.32 + .000/ – .0508

(.4062 + .000/ – .002)

9.53

(.375)

9.53

(.375)

DIA.

6.342 + .000/ – .0076

(.2497 + .000/ – .0003)

DIA.

1.57

(.062)

DIA.

3.167 + .000/ – .0076

(.1247 + .000/ – .003)

1.57

(.062)

9.53

(.375)

DIA.

7.14 + .000/ – .0508

(.281 + .000/ – .002)

DIA.

1.57

(.062)

1.57

(.062)

DIA.

3.167 + .000/ – .0076

(.1247 + .000/ – .003)

21.8

(.86)

DIA.

19.05 ± .0127

(.7500 ± .0005)

DIA.

22.2 + .0127 / – .1270

(.875 + .0005 / – .0050)

1.57

(.062)

.787 ± .254

(.031 ± .010)

.254 ± .076

(.010 .003)

SHAFT

LENGTH

SHAFT FLAT

LENGTH

(DIM. F)

12.7

(.050)

15.9

(.625)

19.1

(.750)

2.54

(.100)

5.08

(.200)

8.25

(.325)

22.2

(.875)

9.65

(.380)

A—+B

DIMENSIONS:

(INCHES)

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

BOURNS EN SERIES OPTICAL ENCODER

E NC1J-D28-L00128L

ANTI-ROTATION

LUG POSITION

Code

Description

None

9:00 Position

Rear Mount-

ing Bracket

SHAFT LENGTH*

Code

Description

1/2 " Long

5/8 " Long

3/4 " Long

7/8 " Long

RoHS IDENTIFIER

Code

Description

Compliant

SWITCHING

CONFIGURATION

Code

Description

Channel A

Leads

Channel B

By 90 ϒ

(Clockwise

Rotation)**

TERMINAL***

CONFIGURATION

Code

Description

Axial, Multi-

Purpose Pin

Radial, Multi-

Purpose Pin

Axial, Ribbon

& Connector

10 “

Radial, Ribbon

& Connector

10 ”

Axial, Ribbon

10 “ -

No Connector

Radial, Ribbon

10 ” -

No Connector

RESOLUTION

Code

00025

00050

00064

00100

00125

00128

00200

00256

Cycles Per

Revolution

25

50

64

100

125

128

200****

256****

SHAFT STYLE

Code

Use With

Bushings (Code)

A, S

C, T, W

A, S

Description

1/4 " Dia., Plain End

1/8 " Dia., Plain End

1/4 " Dia., Single

Flatted

BUSHING CONFIGURATION

Code

Description

3/8 "D X 3/8 "L Threaded

1/4 "D X 1/4 "L Threaded

3/8 "D X 3/8 "L Threaded

(Ball Bearing)

1/4 "D X 3/8 "L Threaded

(Ball Bearing)

Servo Mount 7/8 "D

(Ball Bearing) -

Not available with Anti-

Rotation Lug option

* 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.

**** Available with S, T, and W bushing configuration only.

Speciﬁcations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁc applications.

EN - Rotary Optical Encoder

How To Order

REV. 01/17

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.

Bourns encoder output signals are square wave digital pulses which

do not require debounce circuitry. Both features make it possible

to signicantly 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.

P1-P3

ENA1D-B20-L00128L

Mfr. #:

Buy ENA1D-B20-L00128L

Manufacturer:

Bourns

Description:

Encoders 128CPR AXIAL

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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ENA1D-B20-L00128L

ENA1D-B20-L00128L

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