ENA1D-B28-M00100L View Datasheet(PDF) - Bourns, Inc

Part Name

Description

Manufacturer

ENA1D-B28-M00100L

Rotary Optical Encoder

Bourns, Inc 

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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