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QR200 Optical Rotary Encoder

  • Overview
  • Specifications
  • Info & Pricing

About QR200 Optical Rotary Encoder

Quantum Devices Model QR200 incremental rotary encoder provides an improved rotary encoder feedback solution in applications typically using modular encoders. With an overall length of 0.93” and the stability of a bearing encoder design, model QR200 can provide significant performance upgrades in applications limited by traditional modular encoder solutions. Outputs consist of a quadrature with reference pulse and three-phase commutation, which can be configured with either the industrial standard 5 volt RS-422 Line Driver or the 5 to 26 volt OL7272 line driver. A flexible spring mount allows for much greater tail shaft run out than can be tolerated by modular encoder designs, plus it provides 30 degrees of rotation for commutation timing. A housing constructed of conductive carbon fiber composite provides the EMI shielding of an all metal housing and the performance of a lightweight robust assembly. Use QR200 with our QC201 Commutation Indicator for faster, easier motor encoder alignment.

Contact Quantum Devices for customization.

QR200 Incremental Rotary Encoder Design Features:

  • 500 kHz fundamental frequency response
  • Low profile, 0.93″ assembled height
  • Bearing design simplifies encoder attachment
  • Up to 10,000 lines per revolution, 40,000 post quad
  • 4, 6 or 8 pole commutation
  • Conductive carbon fiber housing
  • 1.812″, 2.375″ bolt circle or size 21 resolver mounting
  • Through shaft sizes up to 0.625″ diameter
  • High noise immunity
  • RoHS construction

Note: prior to transitioning to RoHS-compliant, the product name was QD200 rather than QR200. Therefore, when cross-referencing a QD200 configuration, simply substitute the configuration prefix with QR200.


QR200 Optical Encoder Electrical Specifications

Input Voltage 5 VDC ±5% or 5-26 VDC
Input Current Requirements 125 mA typical @ 5 VDC plus interface loads
Input Ripple 2% peak to peak @ 5 VDC
Output Circuits 01 = 26C31 line driver (RS-422)
02 = OL7272 high voltage line driver
03 = TTL output (single-ended)
04 = ABZ 26C31 line driver, UVW open collector
*Other outputs (or combinations) upon request including open collector ABZ
Incremental Output Format Quadrature with A leading B for CW rotation
Index pulse centered over A for 2500 line count and below
Index pulse true over A and B high for 2500 line count and above
Max Operating Frequency 500 kHz
Symmetry 180° electrical ± 10% typical
Minimum Edge Separation 54° electrical
Commutation Format Three phase 4, 6 or 8 poles (other pole counts upon request)
Commutation Accuracy ±1° mechanical

QR200 Optical Encoder Environmental Specifications

Storage Temperature -40 to 125°C
Operating Temperature -20 to 100°C typical
-20 to 120°C optional
Humidity 98% non-condensing
Vibration 20 g's @ 50 to 500 CPS
Shock 50 g's @ 11 ms duration

QR200 Optical Encoder Mechanical Specifications

Maximum Shaft Speed 8000 RPM
Bore Diameter (Tolerance) 0.375", 0.4375", 0.500", 0.625", 8 mm, 12 mm, 14 mm (-0.0000, + 0.0005)
Allowable Shaft Runout 0.007" TIR
Axial Shaft Movement ±0.030"
Housing Carbon fiber composite (case ground via cable)
Housing Volume Resistivity 10⁻² ohm·cm
Termination 15 conductor cable, 28 AWG 18" long
9 conductor cable for non-commutated and TTL outputs
Mounting 1.812", 2.375" bolt circle or size 21 resolver
Moment of Inertia vs. Bore Diameter Ø0.375" (6.5 x 10⁻⁴ oz·in·s²)
Ø0.500" (6.0 x 10⁻⁴ oz·in·s²)
Ø0.625" (5.1 x 10⁻⁴ oz·in·s²)
Acceleration 1x10⁵ radians/s²
Accuracy ± 1.0 arc minute
Info & Pricing

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Consult factory for configurations not shown (e.g. resolution, commutation, etc.).

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