11BRW-300-F79/10
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The 11BRW-300-F79/10 resolver offers an accuracy of 7 arc-minutes, a phase shift of -2°, a transformation ratio of 0.50 V/V, and operates at a frequency of 2500 Hz. Manufactured by Danaher as part of the Dynapar Resolvers series, it features a maximum input current of 3.1 mA and an input voltage of 12.0 Vrms.
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Product Description:
The 11BRW-300-F79/10 is a Brushless synchro resolver that is utilized for angular position sensing and was developed and manufactured by Danaher. The resolver is suitable for industrial automation systems that require signal feedback that is both durable and dependable.
The 11BRW-300-F79/10 resolver operates at 400 Hz and requires an input voltage of 12.0 V. It can handle up to 10.9 mA. The resolver also requires up to 0.14 W of power. At 2500 Hz, the input voltage remains at 12 V, while the input current and power drop to 3.1 mA and 0.018 W, respectively. The change ratio for both frequencies is 0.50 ± 0.15. The output voltage is 6.0 V with a 0.5 V inaccuracy in both bands. The DC resistance of the rotor is 76.1 ohms, but the stator is 197 ohms, which is 10% off. At 400 Hz, ZS0's impedance is 515 ±1275 ohms, ZSS's is 590 ±415 ohms, ZR0's is 295 ±530 ohms, and ZRS's is 280 ±155 ohms. At 2500 Hz, ZS0 reaches 2500 ±1800 ohms, followed by ZSS at 800 ±1800 ohms, ZR0 at 1500 ±2500 ohms, and ZRS at 360 ±1775 ohms. When the circuit is open, the phase shift can reach +12°, and the error from E2 can be up to ±10 min. The sensitivity is 10 mV/° with a null voltage of 30 mV RMS.
The 11BRW-300-F79/10 brushless synchro resolver has a high-pot limit of 500 V RMS between case and 250 V RMS at 60 Hz. The shaft's widest point is 0.980 inches in front and 1.065 inches behind. The mounting width is 1.062 inches (plus or minus 0.003 inches), and the total length is no more than 1.590 inches. The rotor's moment of inertia is 3.6 gm-cm². The piece weighs roughly 116 grams.
Frequently Asked Questions about 11BRW-300-F79/10:
Q: Why do ZS0 values vary in 11BRW-300-F79/10?
A: ZS0 impedance varies with frequency to match signal characteristics. It ensures accurate angle detection and compatible signal conditioning.
Q: Do friction values change in 11BRW-300-F79/10?
A: Yes, friction changes with temperature. At -55°C, friction increases to 6 gm-cm that affects motion resistance slightly.
Q: How does 11BRW-300-F79/10 manage phase shift?
A: The resolver maintains phase shift under +12° leading. This helps minimize signal lag during synchronous rotation measurement.
Q: Why does 11BRW-300-F79/10 use 28 AWG wires?
A: 28 AWG wires reduce bulk while maintaining signal quality. They allow flexibility and secure electrical connection over 12-inch minimum length.
Q: How do shaft tolerances benefit 11BRW-300-F79/10?
A: Tight 0.001 inch limits for end and radial play prevent misalignment. They ensure reliable mechanical rotation sensing and durability.
