ENA1D-B20-L00128L - Bourns - Datasheet.Directory

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

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c 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-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 ﬂ 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

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c 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

3/8-32 UNEF 1/4-32 UNEF

Optional

Radial Leads

Bushing Style C

Bushing Style S

(Ball Bearing)

Bushing Style AShaft 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 Option Radial 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)

Anti-rotation Lug

View

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: MM

(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

ENC1J-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 °

(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)

* 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.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c applications.

EN - Rotary Optical Encoder

How To Order

REV. 06/12

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 signiﬁ 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.

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Bourns:

ENA1J-C28-Y00128 ENT1D-D28-W00100 ENC1J-D16-R00256 ENA2J-C28-L00128 ENT1J-D20-R00256 ENA1D-

B16-L00064 ENS1J-B28-L00128 ENS1J-B20-L00128 ENA1J-B28-L00128 ENC1D-D16-L00128 ENC1J-D16-R00128

ENA2J-B28-L00064 ENS2J-B28-L00064 ENS1J-B28-W00128 ENA1J-B28-W00128 ENC1J-D16-L00256 ENC1J-

D16-L00200 ENS1J-B28-W00100 ENS1J-B28-L00256 ENA1J-B28-L00256 ENS1J-B20-L00256 ENA1J-B16-L00064

ENW1D-D16-R00256 ENA1D-B28-L00256 ENS1D-B28-L00256 ENA1J-B28-L00050 ENA1J-B28-L00025 ENS1J-

B28-L00050 ENA1J-B28-L00064 ENS1J-B28-L00025 ENS1J-B28-L00064 ENS1J-B20-L00064 ENS1J-B28-Y00256

ENA2D-B28-L00064 ENT1D-D28-R00100 ENC1D-D20-R00128 ENC1J-D28-W00128 ENA1D-B20-L00025 ENS1P-

B28-L00128 ENA1D-B28-L00064 ENS1D-B28-L00064 ENA1D-B22-L00064 ENA1P-B28-L00128 ENA1D-B24-

L00064 ENC1J-D28-L00050 ENS1J-450-R00256 ENC1J-D16-L00128 ENC1J-D28-R00064 ENC1J-D24-R00064

ENC1D-D28-L00100 ENT1D-D20-L00128 ENC1D-D20-L00128 ENT1D-D28-L00100 ENC1D-D28-L00128 ENC1D-

D20-L00256 ENW1D-D28-L00256 ENT1D-D28-L00256 ENT1D-D20-L00256 ENS2D-B28-L00128 ENA1J-B28-

R00128 ENS1J-B28-R00128 ENS1J-B28-R00100 ENS1J-B20-R00025 ENT1J-D28-R00050 ENS1J-C28-R00128

ENA1J-C28-R00128 ENS2J-B28-L00128 ENS1J-C22-R00128 ENT1D-449-Y00064 ENT1D-467-Y00064 ENA1J-

B20-L00064L ENA1D-B20-L00064L ENA1D-B28-L00128L ENA1J-B28-L00025L ENA1J-B28-L00064L ENA1J-B28-

L00100L ENA1J-B28-L00128L ENA1P-B28-L00128L ENC1D-D28-L00064L ENC1J-D16-L00128L ENC1J-D20-

L00100L ENC1J-D28-L00064L ENC1J-D28-L00100L ENC1J-D28-L00128L ENS1D-B28-L00100L ENS1D-B28-

L00128L ENS1J-B16-L00100L ENS1J-B20-L00256L ENS1J-B28-L00100L ENS1J-B28-L00128L ENS1J-B28-

L00256L ENT1J-D28-L00100L ENT1J-D28-L00128L ENW1D-D24-L00064 ENC1D-D28-L00064 ENT1J-D28-M00128

ENC1D-D16-L00256 ENT1D-D16-L00256 ENS1D-C28-L00128 ENS1J-B28-L00100