Product Description:

The 15BRX700-D10A is a brushless resolver produced by Danaher within the Dynapar Resolvers series. As a rotary feedback element, it supplies absolute shaft position to motion controllers. This feedback enables closed-loop regulation of motors and actuators in industrial automation.

The unit is energized by an excitation carrier of 8 kHz; this frequency keeps transformer coupling efficient while minimizing susceptibility to low-frequency noise. When driven with 50 mA of excitation current at an applied input of 8 Vrms, the resolver generates sine and cosine secondary signals that indicate the shaft angle. Electrical balance is verified by a null signal limited to 30 mV, indicating tight stator-to-rotor alignment. Signal quadrature has a phase shift of 0°, so the control electronics can reference the carrier directly without phase compensation. The 627 Ω stator impedance affects the load on the drive oscillator, while the 182 Ω rotor impedance influences the gain required in the demodulator amplifiers. A velocity error of 2.50% indicates the maximum deviation between the electrical derivative output and the actual mechanical speed under dynamic conditions.

An aluminum housing measuring 0.635 in in length protects the windings while keeping the assembly lightweight. The resolver installs with a single servo groove for rapid axial clamping. The pilot measures 1.449 in, centering the body precisely inside motor end bells, while the 3/8 in rotor bore accepts commonly used stainless steel shafts. Position accuracy is maintained within 16 arc-min, meeting typical servo requirements, and the clockwise rotation phasing follows standard shaft conventions. The resolver has a transformation ratio of 0.50, so the secondary voltages are half the applied primary voltage. This ratio simplifies signal scaling in resolver-to-digital converters used to process the angular feedback.