Product Description:

The 11BRCX-300-B-10A resolver is produced by Danaher and supplied under the Dynapar Resolvers series. This electromechanical transducer couples a wound rotor to a stator so motion controllers can monitor shaft angle through analog quadrature signals. In automated machinery, the resolver feeds real-time position data to drives and PLCs, allowing closed-loop regulation of servomotors, index tables, or other rotary elements. Its compact construction suits environments where optical encoders are impractical because of temperature or contamination.

Control electronics excite the resolver through an input of 7.5 Vrms, drawing a reference current of 40.0 mA. At this drive level, the primary rotor winding responds at 4000 Hz, a carrier frequency that the demodulator in the drive system uses to separate angle data from noise. An electrical speed number of 1 means the sine and cosine output cycles once for every mechanical revolution, simplifying interpolation in high-resolution servo loops. Because the primary element is the rotor, the rotating field carries the excitation signal while the stationary stator returns modulated position voltages to the conditioner.

The accuracy characteristics of the device include a null voltage of 15 mV, indicating minimal residual error when the resolver is at its electrical zero. Phase alignment between the reference and returned signals deviates by -2°, a small lag that must be accounted for during resolver-to-digital converter calibration. Signal amplitude scales with a transfer factor of 1.07 Vout/Vin, so the secondary delivers slightly more than unity gain at peak coupling and maintains adequate margin above typical converter thresholds. The analog output provides continuous angular information, allowing the connected control system to track rotation without relying on an optical sensing element.