S22GNNA-RNVS-02 Pacific Scientific
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The Pacific Scientific S22GNNA-RNVS-02 is a 6-pole Neodymium magnet brushless servo motor from the S Brushless Motors series. It features a continuous stall torque of 1.0 Nm, peak torque of 2.64 Nm, and a NEMA 23 frame with 2 stack length. This motor uses a size 21 frameless resolver as its primary feedback device and weighs 1.9 kg.
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Product Description:
The S22GNNA-RNVS-02 is a brushless servo motor manufactured by Pacific Scientific as part of the S Brushless Motors series. Designed for industrial automation, the 6-pole neodymium magnet construction delivers fast acceleration and precise velocity control for pick-and-place heads, indexing tables, and light material-handling axes. Its mechanical envelope follows the NEMA frame standard, and the resolver feedback built into the motor allows the paired drive to track rotor position without an auxiliary sensor.
At continuous stall, the motor produces 1.0 Nm of torque, a level that can be held indefinitely without exceeding thermal limits when adequate airflow is available. During rapid moves, the electromagnetic assembly can briefly reach a peak output of 2.64 Nm. Electrical characteristics include a phase-to-phase resistance of 16.2 Ω and an inductance of 22.1 mH, which influence current rise time and the response of the drive current loop. The copper winding set, identified by code G, develops torque in proportion to current at a rate of 0.7 Nm/ARMS, giving predictable load response. The 2-stack lamination provides added active length without making the motor excessively long.
The electrical back-EMF rises at 0.44 VRMS/rad/sec, which increases voltage demand as speed rises. Rotor dynamics benefit from an inertia of 0.064 × 10⁻³ kg·m², allowing fast reversal with modest drive power, and the housing mass is only 1.9 kg, which helps reduce load on linear stages. Installation fits the NEMA 23 bolt circle, and a Viton shaft seal helps keep lubricant inside while blocking dust. There is no built-in brake, so static holding torque must come from the drive. Primary sensing is provided by a size-21 frameless resolver, and no secondary feedback is fitted. The motor uses the G-type winding pattern for its three phases.
Frequently Asked Questions about S22GNNA-RNVS-02:
Q: What is the continuous stall torque of the S22GNNA-RNVS-02 motor?
A: The S22GNNA-RNVS-02 servo motor provides a continuous stall torque of 1.0 Nm.
Q: What type of primary feedback device is included on the S22GNNA-RNVS-02 brushless motor?
A: This model uses a size 21 frameless resolver as its primary feedback device.
Q: What type of shaft seal does the S22GNNA-RNVS-02 servo motor have?
A: The shaft of this motor is fitted with a Viton shaft seal for enhanced sealing performance.
Q: What NEMA frame size is used for mounting the S22GNNA-RNVS-02 motor?
A: The S22GNNA-RNVS-02 features a NEMA 23 frame size for its mounting standard.
Q: Does the S22GNNA-RNVS-02 brushless servo motor include a holding brake?
A: There is no holding brake included with the S22GNNA-RNVS-02 motor.
