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QM35 Optical Rotary Encoder

  • Overview
  • Specifications
  • Info & Pricing
Overview

About QM35 Optical Rotary Encoder

Quantum Devices, Inc. Model QM35 is a high performance, low profile bearingless modular encoder ideal for high volume OEM applications and priced competitively for all sizes of motion control projects. The QM35’s versatile electrical configurations include lines counts up to 8192 and several commutation options. The QM35’s patented lock-n-twist mechanism simplifies installation; saving production time and money. The QM35 is the newest solution to your motion control needs.

Design Features:

  • Bearingless modular encoder design
  • Full complement outputs
  • Low profile assembled height of 0.43"
  • Resolutions up to 8192 lines per revolution
  • 4, 6, 8, 10, 12, 14, 16 or 18 pole commutation
  • Easy lock-n-twist assembly feature
  • Through bore sizes up to 0.375" diameter
  • Up to 1 MHz frequency response
  • High noise immunity
  • RoHS construction
  • Hub to shaft uses two #3-48 set screws
  • Hermetically sealed LED
  • Multiple mounting options including resolver size 15
Specifications

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’)
C = ABZ 26C31 line driver, UVW open collector (no U’ V’ W’)
Incremental Output Format Quadrature with A leading B for CCW rotation viewed from the encoder top
Max Operating Frequency < 5000 PPR = 500 kHz or 15,000 RPM
5000 PPR – 7999 PPR = 675 kHz
≥ 8000 PPR = 1.0 MHz
Commutation Format Three phase 4, 6, 8, 10, 12, 14, 16 or 18 poles (other pole counts upon request)
Commutation Accuracy ± 2° mechanical
Interpolation Factors 1000/1024 PPR = 2x
2000/2048 PPR = 4x
2500 PPR = 5x
4000/4096 PPR = 8x
5000/5120 PPR = 10x
8000/8192 PPR = 16x

Environmental Specifications

Storage Temperature -40 to 125°C
Operating Temperature -30 to 115°C
IP Rating IP40
Humidity 90% non-condensing
Vibration 20 g's @ 25 to 2,000 Hz
Shock 100 g's @ 6 ms duration

Mechanical Specifications

Bore Minimum Diameter Bore size +0.0002"
Recommended Shaft Tolerance +0.0000/-0.0005"
Minimum Shaft Engagement 0.400" [10.2 mm]
Allowable Shaft Runout 0.002" [0.05 mm] TIR (± 0.001" shaft radial play from initial shaft position of assembled encoder)
Allowable Axial Shaft Movement ± 0.010" [± 0.25 mm]
Mounting A = 1.280" bolt circle/size 15 resolver
B = 1.812" bolt circle
Dynamic Commutation Adjustment Range 30° mechanical
Moment of Inertia 8.0 x 10⁻⁶ oz·in·s²
Info & Pricing

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

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