11BRW-300-B10-01 Danaher
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The Danaher 11BRW-300-B10-01 is part of the Dynapar Resolvers series and operates as a single speed resolver with a primary stator winding. It features an input voltage of 12.0 Vrms, input current of 10.9 mA, and an input frequency of 400 Hz. The resolver offers a transformation ratio of 1.75 and a phase shift of 12 degrees, with a null voltage of 30 mV.
Internal Product Review
The 11BRW-300-B10-01 is a Danaher Dynapar resolver engineered for dependable position feedback with single-speed operation and a stator primary winding. A 12.0 Vrms input at 400 Hz supports stable excitation and clean signal behavior in motion-control circuits. Low 30 mV null voltage is a strong indicator of precise resolver performance.
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Product Description:
The 11BRW-300-B10-01 is a rotary position feedback transducer manufactured by Danaher within the Dynapar Resolvers series. It converts shaft angle into complementary analog signals that enable servo drives and PLCs to monitor motion in real time. By providing absolute position data without onboard electronics, the component supports harsh-duty packaging, conveying, and robotic axes that require dependable closed-loop control. Its passive electromagnetic design avoids the sensitive electronic components commonly found inside optical or digital feedback devices. The output signals allow a compatible controller to calculate angular position continuously throughout shaft rotation.
The transducer functions as a resolver, so its rotor and stator windings form a passive transformer pair that converts angular position into two quadrature voltages. This model uses a single-speed electrical configuration, meaning one mechanical revolution generates one complete electrical cycle and simplifies interface scaling. The primary excitation requires 12.0 Vrms at a frequency of 400 Hz, which matches standard servo-grade resolver interfaces. Under these conditions, the primary draws only 10.9 mA, minimizing heat generation within sealed housings. The induced secondary voltage is scaled by a transformation ratio of 1.75, delivering sufficient signal amplitude for interpolation electronics. Compatible control hardware demodulates the two secondary waveforms and compares their amplitudes to determine the instantaneous shaft angle. Because the sine and cosine signals vary smoothly, the controller can track movement without discrete transitions between measured positions.
During normal alignment, the sine and cosine channels intersect at electrical zero, where the residual null signal remains below 30 mV. This low residual voltage reduces the correction required when the connected controller establishes its zero-angle reference. A stator-to-rotor displacement of 12 degrees between the excitation field and pickup coils establishes the phase relationship needed for proper signal demodulation. The primary winding is located in the stator, so its wiring remains stationary while the rotor turns freely without slip rings. Fixed wiring reduces the number of moving electrical contacts and supports operation in applications exposed to repeated motion or vibration. Proper shielding and routing of the resolver leads help preserve the low-level analog signals when nearby motor cables or switching devices generate electrical noise.
