Quantum Devices, Inc. Product

QM35 Series Incremental Encoders

Quantum Devices, Inc.

QM35 is a high-performance, low-profile bearingless modular encoder for high-volume OEM motion control, competitively priced. It offers resolutions up to 8192 lines, multiple commutation options, and a patented lock-n-twist mechanism that simplifies installation, reducing production time and cost.

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Design Features:

  • Bearingless modular encoder design
  • Full complement outputs
  • Low profile assembled height of 0.43"
  • Resolutions up to 8,192 lines per revolution
  • 4, 6, 8, 10, 12, 14, 16, 18 or 20 pole commutation (others upon request)
  • Easy Lock-n-Twist assembly feature
  • Through shaft sizes up to 0.375″ Diameter
  • Up to 1Mhz 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

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, 18 or 20 poles (other pole counts upon request)
Commutation Accuracy (UVW) ± 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 Specification

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 8.0E-6 oz·in·s²

 

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