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  • Overview
  • Specifications
  • Info & Pricing

About HR12

Encoder Model HR12 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.

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” (10mm) 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 65mA Typ., 100mA Max Plus Interface Loads
Input Ripple 2% Peak to Peak @ 5 VDC
Output Circuits (A) 26C31 RS 422A Line Driver (TTL Compatible)
(B) ABZ 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.
Frequency Response 500 kHz
Symmetry 180 Degrees ± 10% Typical
Minimum Edge Separation <4000PPR = 54 electrical degrees
≥4000PPR = 45 electrical degrees
Commutation Format Three Phase 4, 6 or 8 poles
Commutation Accuracy ± 1° mechanical

HR12 Environmental Specifications

Storage Temperature -40 to 125° C
Operating Temperature -20 to 115° C
IP Rating 52
Humidity 90% Non-Condensing
Vibration 20 g's @ 50 to 500 CPS
Shock 50 g's @ 11mS Duration

HR12 Mechanical Specifications

Through Shaft Diameter 0.125", 0.1875", 0.250", 0.3125", 0.375", 3mm, 4mm, 5mm 6mm, 7mm, 8mm, 10mm
Tolerance: -0.0000, + 0.0006”
Recommended Shaft Engagement .50” Minimum
Radial Shaft Movement Max. 0.007" TIR (Shaft eccentricity plus radial play)
Axial Shaft Movement ± 0.030"
Maximum Shaft Speed 8000 RPM
Interface Connector Connector: JAE P/N F1-W15P-HFE
Mounting HEDS Compatible:
0-80 screw 3 places on .823” circle
2-56 screw 2 places on .750” circle
Moment of Inertia 9.1 x 10⁻⁵ oz-in-S²
Acceleration 1x10⁵ Radians/S²
Accuracy Instrument Error 1.5 arc min. max
Info & Pricing

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