11BRCT-300-M-10A Danaher
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The Danaher 11BRCT-300-M-10A resolver is part of the Dynapar Resolvers series and features a stator primary winding with a transformation ratio of 1.02. It operates at an input voltage of 11.8 Vrms and an input frequency of 2500 Hz, with an input current of 70.0 mA. The resolver also has a null voltage of 30 mV and a phase shift of -1°.
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Product Description:
Danaher manufactures the 11BRCT-300-M-10A, a resolver in the Dynapar Resolvers series. The resolver provides absolute position and velocity feedback by generating sine and cosine voltages that represent shaft angle, allowing motion controllers to regulate servomotors without digital encoders. Designed for harsh industrial environments, this electromagnetic transducer mounts directly on a motor or gearbox shaft and supplies analog position data to drives and PLC modules in packaging machinery, presses, and material-handling equipment. Its electromagnetic operating principle supports reliable feedback in applications exposed to vibration, dust, and repeated motion.
The resolver’s excitation network is tuned for an input of 11.8 Vrms. This alternating reference energizes the rotor coupling so the secondary windings generate proportional output signals. During operation, the primary draws only 70.0 mA, limiting heat generation and allowing the use of small-gauge cabling. The carrier frequency is 2500 Hz, balancing noise immunity with straightforward analog filtering inside the connected drive. Output amplitude relative to the reference is established by a transformation ratio of 1.02, meaning the sine and cosine channels appear at nearly the same level as the excitation signal. Because the primary winding is located on the stator, the electrical feed remains on the stationary frame while the rotor follows shaft movement.
The electrical speed rating is 2, so the resolver produces two electrical cycles during each mechanical revolution. As a result, the drive interprets 180 degrees of shaft movement as one complete sinusoidal period when processing angular feedback. Signal symmetry around the null position is supported by a residual voltage of only 30 mV, which minimizes offset when the rotor is aligned. The phase relationship between the excitation and output signals is trimmed to -1°, helping preserve quadrature accuracy during high-resolution interpolation. The paired sine and cosine channels allow the controller to determine direction as the shaft rotates. Their continuous analog waveforms also permit position tracking throughout rotation without relying on discrete digital counts.
