Product Description:

The 11BRW-300-F-95A-01 is a rotary resolver furnished by Danaher under the Dynapar Resolvers series. In motion-control systems, the resolver operates as an electromechanical transducer that converts shaft angle into proportional sinusoidal signals, allowing drives and controllers to determine speed and absolute position even in electrically noisy environments. The component fits servo motors, indexing tables, and similar equipment where analog position feedback is preferred over digital encoders. Its analog output also allows the connected controller to track continuous angular movement without relying on optical sensing components.

At an electrical speed index of 1, the resolver’s rotor produces one electrical cycle for every mechanical revolution, simplifying drive scaling. The excitation winding is energized at 2,500 Hz; this carrier frequency sets the bandwidth for demodulated position signals and minimizes interference from line harmonics. Normal operation requires an input of 12.0 Vrms while drawing only 3.1 mA of current, so the sensor adds negligible load to excitation amplifiers. A transformation ratio of 0.50 means the induced secondary voltage equals half the applied primary voltage, providing predictable signal amplitudes for resolver-to-digital converters. This constant ratio simplifies automatic gain selection in resolver-interface integrated circuits used by motion controllers.

Signal integrity is aided by a null voltage not exceeding 30 mV; this low residual output at the mechanical zero point reduces offset errors during calibration. The specified phase shift of -2° indicates minimal timing deviation between the primary excitation and secondary response, supporting stable closed-loop operation. Because the primary winding is located on the stator, rotor inertia remains low, which benefits high-speed servomechanisms. The resolver can therefore respond to rapid shaft movement while maintaining an analog signal suitable for position and velocity calculations.