Quantum Devices, Inc. Product

- Bearingless modular design
- Multiple commutation options
- Resolutions to 2500
- Miniature Package Size
- 500kHz Frequency Response
Quantum Devices, Inc. Model QM22 is a high performance, small diameter modular encoder ideal for high volume OEM applications and priced competitively for all sizes of motion control projects. The QM22’s versatile electrical configurations include lines counts up to 2500* and several commutation options*. The QM22’s patent lock-n-twist mechanism simplifies installation; saving production time and money. Perfect for NEMA 11 BLDC servo applications.
Electrical Specifications
Input Voltage | 5 VDC ± 5% |
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Input Current Requirements | 35mA Typ., 50mA Max Plus Interface Loads |
Input Ripple | 2% Peak to Peak @ 5 VDC |
Incremental Output Circuits (ABZ) | 26C31 20mA Sink or Source Max (TTL Compatible) |
Commutation Output Circuits (UVW) | (B) Open Collector 4mA Sink Max, Pull Up Voltage 30 VDC Max (C) Open Collector with 2k? pull-ups, 4mA Sink Max |
Incremental Output Format | Quadrature A leading B for CCW rotation viewed from encoder top. |
Max Operating Frequency | 500Khz or 15,000RPM |
Commutation Format | Three Phase 4, 6, or 8 poles |
Commutation Accuracy | ± 2° mechanical |
Interpolation Factors | 500/512PPR = 2x, 1000/1024PPR = 4x 2000/2048PPR = 8x, 2500PPR = 10x |
Environmental Specifications
Storage Temperature | -40 to 125° C |
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Operating Temperature | -30 to 115° C |
IP Rating | 40 |
Humidity | 90% Non-Condensing |
Vibration | 20 g's @ 25 to 2,000 Hz |
Shock | 100 g's @ 6mS Duration |
Mechanical Specification
Bore Minimum Diameter | Bore Size +0.0002” |
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Recommended Shaft Tolerance | +0.0000”/-0.0005” |
Minimum Shaft Engagement | 0.490” [12.5mm] |
Allowable Shaft Run Out | 0.002" [0.05mm] TIR [±0.001" shaft radial play from initial shaft position of assembled encoder] |
Allowable Axial Shaft Movement | ± 0.010" [± 0.25mm] |
Mounting | 1.024” [26mm] Bolt Circle |
Dynamic Commutation Adjustment Range | 26° mechanical |
Moment of Inertia | 4.0 x 10?6 oz-in-s² |