11BRW-300-B95-01 Danaher
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The Danaher 11BRW-300-B95-01 is part of the Dynapar Resolvers series and features a single electrical speed. It operates with a primary stator winding, an input current of 10.9 mA, and an input voltage of 12.0 Vrms at 400 Hz. The resolver offers a transformation ratio of 1.75 and a phase shift of 12 degrees.
Internal Product Review
The 11BRW-300-B95-01 is a Danaher Dynapar resolver engineered for accurate position feedback with single-speed operation and a 400 Hz input frequency. A 12.0 Vrms input and 30 mV null voltage support stable signal quality and dependable integration in motion-control assemblies. The 1.75 transformation ratio stands out as a strong technical advantage.
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Product Description:
The 11BRW-300-B95-01 resolver is produced by Danaher and belongs to the Dynapar Resolvers series. As a rotary position transducer, it converts mechanical shaft rotation into two analog sine and cosine signals that a servo drive can interpret for precise position feedback. The device is intended for motion axes that require absolute angular information, such as robot joints, indexing tables, and spindle orientation systems in industrial automation. Its analog architecture allows the connected controller to calculate the shaft angle continuously from the relative amplitudes of the two output signals.
Its excitation network uses a source of 12.0 Vrms at 400 Hz. Under this excitation, the primary winding draws only 10.9 mA, allowing the resolver to operate from a standard resolver drive channel without a dedicated amplifier. The induced secondary has a transformation ratio of 1.75, which establishes the relationship between the reference carrier and the returned signal amplitude. The sine and cosine channels maintain electrical quadrature with a phase shift of 12°, supporting accurate vector decoding throughout a complete mechanical rotation. This arrangement provides continuous analog feedback without requiring an optical disk or digital position-processing electronics inside the resolver housing.
A low residual voltage of 30 mV at the electrical zero indicates minimal offset when the rotor and stator tracks are aligned, permitting accurate zero-position calibration. The resolver uses a single-speed configuration, so one electrical revolution corresponds to one mechanical revolution and the controller does not require multi-turn interpolation routines. Its primary winding is located on the stator, which places the excitation conductors on the stationary side and avoids routing those connections through the rotating assembly. The stationary winding arrangement also reduces the electrical complexity of the rotor while preserving continuous angle feedback during repeated machine cycles. Because the returned sine and cosine signals vary with shaft position, the connected drive can use their relative values to track rotation across the full operating range.
