R43HENA-R2-NS-NV-0
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The R43HENA-R2-NS-NV-0 regulator features a 1/4\" NPT port size, a non-relieving adjustment type, a pressure range of 0 to 125 psi, and a flow capacity of 57 scfm. Part of the R Servomotors series from Pacific Scientific, it boasts an aluminum body material and is suitable for temperatures between 40°F and 120°F (4°C to 49°C).
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Product Description:
The R43HENA-R2-NS-NV-0 is a brushless servomotor. The Pacific Scientific designs this motor and its frame measures 4.25 inches square. The motor features a rare earth magnet rotor. It features a completely enclosed non-ventilated IP65 structure.
The R43HENA-R2-NS-NV-0 has a 3-inch magnet stack length for compact performance. It has a 6.4 Nm continuous stall torque. Peak torque can reach 17.0 Nm for intermittent needs. It has a rated speed of 3,600 rpm with a 240V AC supply. Standard installations provide a no-load speed of 4,200 rpm. The motor draws 4.9 ARMS at stall and can handle up to 14.7 ARMS at peak loads. It has a resistance of 2.8 Ohms and an inductance of 3.8 mH. These electrical features improve current control efficiency. The shaft seal is not supplied for use in open situations. Thermal resistance is tested at 0.92 °C/W to ensure efficient heat dispersion. The thermal time constant for maintaining a stable temperature is 23 minutes. The internal rotor has an inertia of 0.24 kgm² x 10⁻³. It ensures precise speed and torque responses in servo systems. The viscous damping coefficient is 0.012 Nm/kRPM which reduces system oscillations. The total weight of the motor is 2.9 kg. This lightweight design allows for smaller machine construction. Static friction is rated at 0.05 Nm that ensures a smooth start.
The R43HENA-R2-NS-NV-0 motor provides consistent performance under all operating circumstances. The motor's major feedback comes from a frameless size 21 resolver. It has no secondary feedback by design. This motor has a continuous torque of 6.4 Nm at its rated speed. With a torque constant of 1.3 Nm/ARMS and a voltage constant of 0.78 VRMS/rad/sec it ensures consistent torque conversion. It is appropriate for applications that need size and torque alignment. Its brushless architecture and rare earth magnets enable extensive duty cycles.
Frequently Asked Questions about R43HENA-R2-NS-NV-0:
Q: Why is the frameless resolver used in the R43HENA-R2-NS-NV-0 motor?
A: The frameless resolver provides precise rotor position feedback with high reliability. It operates effectively in environments where optical encoders may fail.
Q: How does the 0.24 kgm² × 10⁻³ inertia benefit servo performance?
A: Low rotor inertia in the R43HENA-R2-NS-NV-0 enables fast acceleration and deceleration. This improves dynamic response in positioning systems.
Q: What is the impact of having no shaft seal in this motor?
A: The absence of a shaft seal in R43HENA-R2-NS-NV-0 reduces mechanical drag. It’s suitable for clean environments where seal protection isn’t required.
Q: What role does the 3.8 mH inductance play in motor operation?
A: Higher inductance like in this model helps smooth current transitions. It contributes to stable torque output during variable speed operations.
Q: Why is there no secondary feedback in the R43HENA-R2-NS-NV-0?
A: This motor is optimized for applications where primary resolver feedback is sufficient. Eliminating secondary feedback simplifies integration and wiring.
