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datasheet encoder

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E3

Optical Kit Encoder
Page 1 of 14

Description
The E3 is a high resolution rotary encoder with a molded polycarbonate
enclosure, which utilizes either a 5-pin locking or standard connector. This
optical incremental encoder is designed to easily mount to and dismount from an
existing shaft to provide digital feedback information.
The E3 is easy to add to existing applications and only consists of four main
components; base, cover, hub/code wheel and optical encoder module.
The E3 is normally designed for applications of 10 feet or less. For longer cable
lengths, adding a PC4 / PC5 differential line driver is recommended.
The base and cover are both constructed of rugged 20% glass filled
polycarbonate. Attachment of the base to a surface may be accomplished by
utilizing one of several machine screw bolt circle options. Positioning of the base
to the centerline of a shaft is ensured by use of a centering tool (sold separately).
The cover is securely attached to the base with two 4-40 flat head screws to
provide a resilient package protecting the internal components.
The internal components consist of a shatterproof mylar disk mounted to a
precision machined aluminum hub and an encoder module. The hub is available
for diameters up to 1". The module consists of a highly collimated solid state light
source and monolithic phased array sensor, which together provide a system
extremely tolerant to mechanical misalignments.
Connection to the E3 product is made through either a 5-pin locking or standard
connector (sold separately). The mating connectors are available from US Digital
with several cable options and lengths.

Features
Quick, simple assembly and disassembly
Rugged screw-together housing
Accepts .010" axial shaft play
Tracks from 0 to 300000 cycles/sec
Small size
64 to 2500 cycles per revolution (CPR)
256 to 10,000 pulses per revolution (PPR)
2 channel quadrature TTL squarewave outputs
Optional index (3rd channel)
-40 to +100C operating temperature

Rev. 130404075044

E3

Optical Kit Encoder
Page 2 of 14

Default

Base & Cover Options

Rev. 130404075044

E3

Optical Kit Encoder
Page 3 of 14

Environmental
Parameter

Value

Units

Operating Temperature

-40 to 100

C

Vibration (5Hz to 2kHz)

20

G

Electrostatic Discharge, Human Body Model

±4

kV

Mechanical
Parameter

Value

Units

Max. Shaft Axial Play

±0.010

in.

Max. Shaft Eccentricity Plus Radial Play (1)

0.004

in.

Max. Acceleration

250000

rad/sec²

Max. RPM (2)
e.x. CPR=2500, max. rpm=7...
Description
The E3 is a high resolution rotary encoder with a molded polycarbonate
enclosure, which utilizes either a 5-pin locking or standard connector. This
optical incremental encoder is designed to easily mount to and dismount from an
existing shaft to provide digital feedback information.
The E3 is easy to add to existing applications and only consists of four main
components; base, cover, hub/code wheel and optical encoder module.
The E3 is normally designed for applications of 10 feet or less. For longer cable
lengths, adding a PC4 / PC5 differential line driver is recommended.
The base and cover are both constructed of rugged 20% glass filled
polycarbonate. Attachment of the base to a surface may be accomplished by
utilizing one of several machine screw bolt circle options. Positioning of the base
to the centerline of a shaft is ensured by use of a centering tool (sold separately).
The cover is securely attached to the base with two 4-40 flat head screws to
provide a resilient package protecting the internal components.
The internal components consist of a shatterproof mylar disk mounted to a
precision machined aluminum hub and an encoder module. The hub is available
for diameters up to 1". The module consists of a highly collimated solid state light
source and monolithic phased array sensor, which together provide a system
extremely tolerant to mechanical misalignments.
Connection to the E3 product is made through either a 5-pin locking or standard
connector (sold separately). The mating connectors are available from US Digital
with several cable options and lengths.
Features
Quick, simple assembly and disassembly
Rugged screw-together housing
Accepts .010" axial shaft play
Tracks from 0 to 300000 cycles/sec
Small size
64 to 2500 cycles per revolution (CPR)
256 to 10,000 pulses per revolution (PPR)
2 channel quadrature TTL squarewave outputs
Optional index (3rd channel)
-40 to +100C operating temperature
E3
Optical Kit Encoder
Page 1 of 14
Rev. 130404075044
datasheet encoder - Trang 2
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