21BRCX-500-MA7
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The 21BRCX-500-MA7 resolver features an excitation voltage of 10 V, an input current of 0.017 A, an output resistance of 114 Ω, and weighs 11 ounces. Part of the Dynapar Resolvers series by Danaher, it offers a resolver accuracy of 7 arc-min resolution and operates in a counter-clockwise (CCW) rotation direction.
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Product Description:
The 21BRCX-500-MA7 Resolver is a product of Danaher's Dynapar Resolvers family products. This product serves high quality automation requirements and motion control operations.
The 21BRCX-500-MA7 resolver braided design provides mechanical protection and reduces electromagnetic interference (EMI), which helps preserve signal integrity in noisy industrial environments. It has a circular body and a central hollow section (bore) which allows it to be mounted around a shaft. It requires an input signal (alternating voltage) of 7 volts which powers the primary winding (stator) to induce currents in the secondary windings. It is used to determine the angular position of a rotating shaft and in motion control systems, they feed position information back to a controller to ensure precise motor operation. It is able to output two analog signals such as a sine and cosine waveform which correspond to the angle of the rotor and are used to calculate absolute position and are typically demodulated or converted to digital signals in the controller. It has a clean and corrosion resistant surface which helps in environments where dirt or chemicals are present and allows easier cleaning and longer device life.
The 21BRCX-500-MA7 resolver hole has a diameter of 0.5 inch which defines the size of the shaft that the resolver can fit around and is common in compact motors or robotic actuators. It is powered by 3000 hertz frequency which helps in providing more accurate signal output and better resolution, though it also requires compatible signal-processing electronics. Its twisted wiring helps minimize electromagnetic interference between signal lines. It has the transformation ratio of 0.5 which defines the voltage relationship between the stator input and the rotor output windings.
Frequently Asked Questions about 21BRCX-500-MA7:
Q: How does the braided cable design enhance performance in the 21BRCX-500-MA7 resolver?
A: The braided cable provides excellent shielding against EMI. This ensures accurate signal transmission in high-noise industrial environments.
Q: Why is a sine/cosine analog output beneficial in resolver applications like the 21BRCX-500-MA7?
A: Sine/cosine outputs allow continuous position tracking with high resolution. They also enable absolute position feedback even after power loss.
Q: What is the significance of using a 0.5 transformation ratio in 21BRCX-500-MA7?
A: A 0.5 TR ensures a predictable and stable voltage output. It simplifies signal conditioning in resolver-to-digital conversion systems.
Q: Why is a through-hole design used in the 21BRCX-500-MA7 resolver?
A: The through-hole allows direct shaft mounting without extra couplings. This enhances alignment accuracy and saves mechanical space.
Q: How does 3000 Hz excitation frequency improve the performance of 21BRCX-500-MA7 resolver?
A: A higher frequency allows faster response times and finer resolution. It suits high-speed feedback loops in servo systems.
