Product Description:

The F46HSNA-R2-NS-NV-02 is a brushless servo motor built by Pacific Scientific within the F Servomotors series. This rotary unit is intended for closed-loop motion axes where accurate torque and position control are required in automated machinery and material-handling stations. By pairing with a suitable digital drive, the motor converts electrical power into controlled mechanical rotation so that conveyors, indexers, and gantries can maintain programmed speed profiles and repeatable positioning under varying load conditions.

For continuous operation, the motor provides 6.9 Nm of torque while drawing a steady phase current of 13.6 A. The torque constant of 0.62 Nm/A links drive current to shaft torque and is useful for tuning current loops. Electrical dynamics are influenced by an inductance of 6 mH and a cold line resistance of 0.78 Ω, values that shape current rise time and resistive losses. Rotor behavior is influenced by a 0.00202 kg·m² inertia, static friction of 0.15 Nm, and viscous damping of 0.034 Nm/kRPM, which affect how quickly speed changes under command. Primary feedback is provided by a frameless resolver, Tx type, size 21, enabling rotor position feedback without separate sensors.

During transients, the motor can deliver a peak torque of 17.5 Nm, giving headroom for acceleration or short load disturbances. A voltage constant of 65 V/kRPM determines the back-EMF that the drive must overcome as speed rises, while the thermal network, modeled by a 42 min time constant and a 0.61 °C/W thermal resistance, indicates how quickly winding temperature changes under load. The 12.5 kg mass contributes to mechanical stiffness and helps disperse heat. There is no secondary feedback device and no shaft seal, so external encoders or environmental barriers are added only if the installation demands them.