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RB21 Single Wheel Linear Measurement Encoder

Brand: Tri-Tronics
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The BlueCoder model RB21 is an optical incremental encoder that use the benefits of blue LED light.

It is a size 20 encoder that is a compact 2" diameter x 1-7/8" (Ø51mm x 48mm) long optical shaft encoder with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor.

When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheel it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution.

Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.
Features
  • High-Definition blue-light phased array technology
  • Compensated blue-light source
  • Wide operating voltage 4.5Vdc - 30Vdc
  • High resolution up 10,000 CPR
  • Unbreakable code disk
  • IP65 environmental seal
  • Integrated mounting arm
  • Precision measuring wheel

Specifications

Brand

Maximum Speed

  • 6,000 rpm

Shaft Loading

  • Radial - 50 lbs for life of 4.1 x 109 revolutions
  • Axial - 50 lbs for life of 4.1 x 109 revolutions
  • Note: A flexible shaft coupling is recommended to increase bearing life.

Bearing Life

  • 32 x 1,000,000/ rpm = hours

Materials

  • Case - Aluminum, anodized
  • Shaft - 303 Stainless Steel

Weight

  • 10 oz. (285 grams)

Sealing

  • P65

Supply Voltage

  • 4.5 Vdc to 30 Vdc (6.0 Vdc to 30 Vdc for RS-422 differential line driver)

Current

  • 65 mA max exclusive of load
  • Short circuit and ESD protected

Operating Temperature

  • 0° to 70° C

Pulse Symmetry

  • 180° ± 36° @ maxRPM

Quadrature Phase Error

  • 90° ± 36° @ maxRPM

Phase Jitter

  • 27°

Maximum Frequency

  • Up to 1.4 MHz

Noise Immunity

  • Tested to EN 61000-6-2

Output Type

  • Two channel quadrature square waves (A,B)
  • Optional index (Z)
  • Optional complimentary outputs (-A,-B,-Z)
  • Note: Output A leads B by 90° for clockwise rotation when viewed from shaft end

Counts per Revolution

  • 360, 720, 1000, 1024, 1200, 1250, 1440, 1500, 1800, 2000, 2048, 2400, 2500, 3000, 3600, 4000, 4096, 4800, 5000, 6000, 7200, 8000, 8192, 10000

  • Conveyor Manufacturers
  • Printing and Labeling
  • Custom Machine Builders
  • Packaging
  • Material Handling

Documentation

Data Sheets

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