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QR12

  • Overview
  • Specifications
  • Info & Pricing
Overview

About QR12

Quantum Devices, Inc. Model QR12 Optical Encoder provides an improved Rotary Encoder feedback solution in applications traditionally using modular encoders. With an over all height of less than one inch and the stability of a bearing encoder design, the model QR12 Optical Encoder can provide significant performance upgrades in applications limited by modular encoders. Outputs consist of two incremental channels in quadrature with index pulse and three-phase commutation. A spring steel flex mount allows for much greater tail shaft run out and TIR than can be tolerated by modular encoder designs, while also providing 30 degrees of rotation for commutation timing.

QR12 Optical Encoder Design Features:

  • Low profile assembled height of less than 1″
  • Bearing design simplifies encoder attachment
  • Resolutions up to 20,000 lines per revolution
  • SIN/COS Outputs available up to 1250 LC
  • 4, 6 or 8 pole commutation
  • 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
Specifications

QR12 Optical Encoder Environmental Specifications

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

QR12 Optical Encoder 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 0.007" TIR
Axial Shaft Movement ± 0.030"
Maximum Shaft Speed 8000 RPM, Contact Customer Service for Higher RPM
Interface Connector Connector: JAE P/N FI-W15P-HFE
Mounting 1.28”, 1.575”, 1.812” Bolt Circle (Suggested Hardware #6-32 button head screws)
Moment of Inertia 9.1 x 10⁻⁵ oz-in-S²
Acceleration 1x10⁵ Radians per Second²
Accuracy ± 1.5 arc minute

QR12 Optical Encoder Incremental Electrical Specifications (Output Options A & B)

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

QR12 Optical Encoder Sin/Cos Electrical Specifications (C & D Output Options)

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 (C) Sine/Cosine, Index & RS422 UVW (TTL Compatible)
(D) Sine/Cosine, Index & UVW Open Collector
Incremental Output Format Quadrature Sine/ Cosine with A leading B for CW rotation. Ungated Index Pulse.
Frequency Response 500 kHz
Sine/Cosine & Index Amplitude 1 Vpp ± 5% (Measured Differentially)
Commutation Format Three Phase 4, 6 or 8 poles
Commutation Accuracy ± 1° mechanical
Z channel to U channel ± 1° mechanical
Info & Pricing

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