S34GNNA-RNNM-00
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The S34GNNA-RNNM-00 brushless motor offers a continuous stall torque of 6.6 Nm, a peak torque of 25.3 Nm, a rotor inertia of 0.64 kgm^2 x10^-3, and features a NEMA 34 frame size. Part of the S Brushless Motors series by Pacific Scientific, it includes a size 21 frameless resolver as the primary feedback device.
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Product Description:
The S34GNNA-RNNM-00 is a reliable brushless servomotor. This variant has a square frame with NEMA 34 specifications. It is manufactured by Pacific under the series of S Brushless Motors. The motor is completely sealed to IP65 and NEMA requirements.
The S34GNNA-RNNM-00 features a medium inertia rotor and high energy neodymium-iron-boron magnets. It has a 6-pole configuration and produces a constant stall torque of 45.0 lb-in and a peak torque of 131.0 lb-in. The torque constant is 1.67 Nm/A whereas the voltage constant is 174 V/Krpm. It can handle a continuous current of 3.4 A and a peak current of 10.2 A. The winding utilized is designated as type G. Cold and hot resistance values are 2.1 and 3.2 ohms, respectively. The inductance is 6.3 mH and the motor inertia is 0.0041 lb-in-s². It uses a frameless resolver as the primary feedback system for commutation, velocity and position control. The weight of the motor alone is 4.9 kg. The motor includes a 24V DC holding brake that generates 32 lb-in torque and adds 2.5 lbs to the weight. Brake inertia is 0.025 lb-in-s² with a 10 ms pull-in and 30 ms drop-out. The NEMA 34 interface supports mounting with a bolt circle of 3.875" and holes of 0.218" diameter. Shaft has a standard 0.500" diameter. The frame width and height are 3.38 inches, and the whole length is about 206.5 millimeters. The motor can run at up to 14,000 rpm without a load. It also includes an inbuilt PTC thermistor for thermal protection.
The Pacific Scientific provides the S34GNNA-RNNM-00 servomotor as a dependable option for accurate and efficient motion control. There is no secondary feedback or encoder in this device. Its Static friction is 0.56 lb-in whereas viscous damping is 0.15 lb-in/Krpm. The thermal resistance is 0.87 °C per watt, and the thermal time constant is 27 minutes. The model is designed for locations where IP65 protection and thermal safety are crucial.
Frequently Asked Questions about S34GNNA-RNNM-00:
Q: How does the 6-pole design of S34GNNA-RNNM-00 improve motor control?
A: A 6-pole configuration allows smoother rotation and better torque ripple reduction. It also enhances low-speed performance essential for precision applications.
Q: How does the medium rotor inertia affect performance in S34GNNA-RNNM-00?
A: Medium inertia provides a balance between speed response and load stability. It minimizes overshooting and supports better control in positioning tasks.
Q: What role does the 0.87 °C/Watt thermal resistance play in S34GNNA-RNNM-00?
A: Lower thermal resistance allows efficient heat dissipation through the mounting surface. This ensures consistent motor performance during extended operation.
Q: How does the built-in PTC thermistor enhance motor safety?
A: The PTC thermistor provides over-temperature detection by increasing resistance when overheated. It helps prevent thermal damage by enabling shutdown or alarms.
Q: Is the S34GNNA-RNNM-00 suitable for vertical load holding applications?
A: Yes, the 24V DC holding brake delivers 32 lb-in static torque. It securely holds the shaft in stationary applications like vertical positioning systems.
