Brushless Resolvers

Brushless Resolvers – FAQ

1. What are Brushless Resolvers?
   Brushless resolvers are electromechanical sensors used to determine the angular position of a rotating shaft without the wear and noise associated with brushes. Their brushless design ensures high reliability, long life, and a noise-free operation.

2. What are the operating temperature ranges?

   • Built-in Type: –55°C to +155°C
   • Shaft Types (e.g., TS2028 and TS2054): –30°C to +100°C
     These wide temperature ranges make them suitable for use in demanding environments.

3. Can brushless resolvers withstand harsh environmental conditions?
   Yes. They are designed for demanding environments with:

   • Vibration Resistance: Up to 196 m/s² (20G) across frequencies from 10 to 500 Hz
   • Shock Resistance: Up to 981 m/s² (100G) for 11 ms
   • High Humidity Tolerance: At least 90% relative humidity at 60°C
     This robust construction ensures reliable performance even under extreme conditions.

4. What performance benefits do brushless resolvers offer?

   • High Reliability and Long Life: Due to the absence of brushes, there is less wear, resulting in extended service life.
   • Noise-Free Operation: They generate minimal electrical and mechanical noise, ensuring accurate and stable measurements.

5. What are the operating speed capabilities?

   • Built-in Types: Operating speeds range from 100 to 500 revolutions per second (6000 to 30000 RPM)
   • Shaft Types: Typically up to 100 revolutions per second (6000 RPM)
     These speeds make them versatile for various high-speed industrial applications.

6. What installation tolerances are critical for optimal performance?

   • Shaft Run-out: The motor shaft (with the rotor mounted) should have a run-out of less than 0.050 mm (Total Indicator Reading, TIR).
   • Concentricity: The centers of the resolver and the motor shaft must align within 0.050 mm (TIR).
   • Perpendicularity: The resolver case should be perpendicular to the motor shaft within 0.050 mm (TIR).
   • Axial Alignment: For built-in types, the stator and rotor must be axially aligned within the specified tolerance (per MTG.DIM).
     Proper alignment is crucial for achieving the resolver's full accuracy and performance.

7. What industries and applications are these resolvers best suited for?
   Due to their robustness, wide operating temperature range, and high reliability, brushless resolvers are ideal for aerospace, automotive, heavy machinery, industrial automation, and other applications where precise and reliable angle measurement is critical.

8. Where can I get more information or support?
   For further details on specifications, installation guidelines, or application assistance, please consult the manufacturer’s datasheet or contact your local technical support representative.

Feel free to reach out if you have any additional questions regarding brushless resolvers.