Product Overview > Optical Encoders

Optical Encoder Information Packet Includes:
  • Description
  • Product Photos
  • Engineering Drawings
  • Ordering Information
  • Technical Data
  • Information on all
    Optical Encoders
  • OE-39H & S Series
  • OE-39H/S22 Absolute
    Positioning Encoder
  • OE-39 TCT &TCN
    Tricentric Shafts Encoder
  • OE-39C Concentric
    Shaft Encoder
  • OE-36 High Resolution
    Series

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Cole Optical Encoder Series Information Packet
encoder.pdf

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High Resolution Optical Encoder

The Series OE-39 rotary encoder switches use quadrature output (2-bit repeating gray code).

In a quadrature rotary optical encoder two detectors are used to provide output “A” and “B”. The code rotor either blocks the infrared light or allows it to pass to the detectors. As the shaft turns the rotor, the output changes state to indicate position. The resulting output is two square waves that are 90° out of phase.

External pull-up resistors from each output to the power source are needed when interfacing with an open collector output to provide the output with the high state voltage when the photo transistor is “off”. Base current is supplied in a photo transistor when light strikes the detector effectively grounding the output.

This “on” or “off” digital arrangement allows the open collector to interface with commonly used integrated circuit technologies such as TTL, TTL LS, CMOS and HCMOS.

FEATURES

  • Positions Screen Cursor
  • Permits Visual Concentration
  • Economic Touch Screen Alternative
  • Pushbutton for Entry Function
  • Detent for Tactile Feedback and Minimal Backlash *
  • Optical Coupling for Long Life
  • More Friendly than Keyboard
  • Metal Detent Sprockets for More than a Million Trouble-Free Rotations.


CUSTOM DESIGN OPTICAL ENCODERS╩ ARE AVAILABLE.

OPTICAL ENCODER SERIES TECHNICAL DATA

 

Coding
2 bit quadrature
Operating Voltage
5.0 ▒ .5 VDC
Supply Current
30 mA max.
@ 5 VDC
Logic Low Maximum
0.5 V
Logic High Minimum
2.5 V
Logic Rise/Fall Time
<30ms
@ 16.6 rpm
Switching Life
100,000 cycles
(1,000,000 available)
Weight
21 grams
Contact Surfaces Gold Plated

 

Vibration Tested YES
High Impact Shock Tested YES
Moisture Resistant YES
Salt Spray Resistant YES
Explosion Proof YES
RFI/EMI Tested YES
Push Button Available
Concentric Shaft Available
Shaft Seal Available
Panel Seal Available

 

 

 
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