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LP12

  • Overview
  • Specifications
  • Info & Pricing
Overview

About LP12

Quantum Devices, Inc. Model LP12 optical encoder provides an improved feedback solution in applications typically using modular encoders. With an over all height of less than an inch and the stability of a bearing encoder design, the model LP12 can provide significant performance upgrades in applications limited by traditional modular encoder solutions. Outputs consist of a quadrature with index pulse (Incremental or Sinusoidal) and three-phase commutation. 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.

LP12 Optical Encoder Design Features:

  • Low profile assembled height of 0.816″
  • Bearing design simplifies encoder attachment
  • Incremental Resolutions up to 20,000 cycles per revolution
  • SIN/COS Resolutions up to 1250 cycles per revolution
  • Standard 4, 6 or 8 pole commutation
  • Multiple Bolt Circle mounting
  • Through shaft sizes up to 0.3125″Ø/ 8mmØ
  • High Noise Immunity
  • Cost Competitive with Modular Encoders
  • 500 kHz Frequency Response
  • RoHS Construction
Specifications

LP12 Incremental Electrical Specifications (A & B 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 (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

LP12 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 (A) Sine/Cosine, Index & RS422 UVW (TTL Compatible)
(B) 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

LP12 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

LP12 Mechanical Specifications

Through Shaft Diameter 0.250", 0.3125", 0.375", 5mm 6mm ,8mm, 10mm
Tolerance: -0.0000, + 0.0006”
Recommended Shaft Engagement .750” 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 F1-W15P-HFE
Mounting 1.28”, 1.575”, 1.812” Bolt Circle
Moment of Inertia 9.1 x 10⁻⁵ oz-in-S²
Acceleration 1x10⁵ Radians/S²
Accuracy ± 1.5 arc minute
Info & Pricing

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