S22HNAA-RNNM-00
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The S22HNAA-RNNM-00, part of Pacific Scientific's S Brushless Motors series, features a NEMA 23 frame size and weighs 1.9 kg. This motor offers a continuous stall torque of 1.0 Nm, a peak torque of 2.64 Nm, and an inductance of 5.7 mH. Its stack length is two-stack.
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Product Description:
Part of the S family, the Pacific Scientific S22HNAA-RNNM-00 is a NEMA 23-frame brushless servo motor.
Compared to single-stack variants, the model's torque capacity is increased by using a 2-stack design without sacrificing a small physical footprint. The motor weighs 1.9 kg with a constant stall-torque of 1.0 Nm, making it usable for regular, steady small to mid-speed tasks. It provides a high torque of 2.64 Nm, suitable for rather heavy workloads in automation, robotics, or for packaging solutions. The electrical nature of the motor is well balanced, responsive, yet efficient. The line-line inductance of the motor is 5.7 mH to reinforce steady guiding of the motor electrically. 4.2 ohms of resistance is another feature that aids in efficient current regulation during working. A torque constant of 0.3 Nm/ARMS is used to generate effective torque proportional to the current input to the motor. It similarly has a voltage constant of 0.19 VRMS/rad/sec, which also fits well with standard servo drive systems.
The added stack length causes the rotor inertia to be somewhat greater at 0.064 x 10⁻³ kg·m², but it is still low enough to enable quick acceleration and deceleration. Feedback is provided by the motor's frameless Size 21 resolver, which is sturdy, durable, and found in challenging operating environments. Since secondary feedback is not offered, it is meant to be utilized by systems where resolver-level resolution is sufficient. It is also not equipped with a shaft seal, so there may be a requirement for extra measures to protect it against the presence of dust, moisture, or oil. The driver, which is installed directly on the housing and has a standard MS connection, facilitates electrical integration in the great majority of control cabinets.
Frequently Asked Questions about S22HNAA-RNNM-00:
Q: What torque levels does the S22HNAA-RNNM-00 deliver?
A: The S22HNAA-RNNM-00 provides 1.0 Nm continuous stall torque and peaks at 2.64 Nm, well-suited for robotics, packaging, and mid-load automation tasks.
Q: What design allows the S22HNAA-RNNM-00 to produce higher torque?
A: It uses a 2-stack design, which increases torque output while retaining the NEMA 23 frame footprint, providing more power without increasing motor dimensions.
Q: What type of feedback is included in the S22HNAA-RNNM-00?
A: The motor is equipped with a frameless Size 21 resolver—rugged and reliable in harsh conditions, though it lacks secondary feedback for high-resolution positioning.
Q: Is the S22HNAA-RNNM-00 protected against dust and moisture?
A: No, it does not include a shaft seal, so additional protective measures should be taken in dusty or damp environments.
Q: How is the S22HNAA-RNNM-00 connected electrically?
A: It features a standard MS-style connector integrated directly on the housing, ensuring easy compatibility with typical industrial control cabinet wiring.
