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HR12 Optical Rotary Encoder

  • Overview
  • Specifications
  • Info & Pricing

About HR12 Optical Rotary Encoder

Encoder Model HR12 optical rotary encoder provides an improved feedback solution in applications typically using modular encoders. The HR12 provides feedback capabilities where the others leave off – high line count resolution, high temperature operation, rugged bearing construction, large tolerance to radial and axial shaft play, commutation for brushless motor control, with a strain relieved cable. Quadrature output with index pulse and three-phase commutation provided with industrial 26C31 differential drivers. A flexible member allows for much greater tail shaft run out and TIR than can be tolerated by modular encoder designs, plus it provides 30 degrees of rotation for commutation timing. Use HR12 with our QC201 Commutation Indicator for fast, accurate motor encoder alignment.

Contact Quantum Devices to customize model HR12.

Design Features:

  • Mount compatible with HEDS encoders
  • Bearing design simplifies encoder attachment
  • Resolutions up to 20,000 lines per revolution
  • 4, 6 or 8 pole commutation
  • Differential line drivers
  • Protective enclosure
  • Multiple bolt circle mounting
  • Through shaft sizes up to 0.375” (10 mm) diameter
  • High noise immunity
  • Cost competitive with modular encoders
  • 500 kHz frequency response
  • RoHS construction
  • No centering tools required for easy assembly

HR12 Electrical Specifications

Input Voltage 5 VDC ± 5%
Input Current Requirements 65 mA typical, 100 mA max plus interface loads
Input Ripple 2% peak to peak @ 5 VDC
Output Circuits A = 26C31 line driver (RS-422 or single-ended TTL)
B = ABZ 26C31 line driver, UVW open collector (no U’ V’ W’)
Incremental Output Format Quadrature with A leading B for CW rotation
Index pulse true over A and B high
Max Operating Frequency 500 kHz
Symmetry 180° electrical ± 10% typical
Minimum Edge Separation <4000 PPR = 54° electrical
≥4000 PPR = 45° electrical
Commutation Format Three phase 4, 6 or 8 poles (other pole counts upon request)
Commutation Accuracy ± 1° mechanical
Z Channel to U Channel ± 1° mechanical

HR12 Environmental Specifications

Storage Temperature -40 to 125°C
Operating Temperature -20 to 115°C
IP Rating IP52
Humidity 90% non-condensing
Vibration 20 g's @ 50 to 500 CPS
Shock 50 g's @ 11 ms duration

HR12 Mechanical Specifications

Bore Diameter (Tolerance) 0.125", 0.1875", 0.250", 0.3125", 0.375", 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm (+0.0006/-0.0000")
Recommended Shaft Engagement 0.500" minimum
Allowable Shaft Runout 0.007" TIR
Axial Shaft Movement ± 0.030"
Maximum Shaft Speed 8000 RPM
Interface Connector Connector: JAE P/N FI-W15P-HFE
Mounting HEDS Compatible:
#0-80 screw 3 places on 0.823" bolt circle
#2-56 screw 2 places on 0.750" bolt circle
Moment of Inertia 9.1 x 10⁻⁵ oz·in·s²
Acceleration 1x10⁵ radians/s²
Accuracy Instrument error 1.5 arc minutes max
Info & Pricing

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

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