Product Description:

The FSM630 brushless servo motor is produced by Kollmorgen within the FSM Brushless Servo Motors series. It serves as a rotary actuator in industrial automation, translating current commands from a matched drive into precise torque and velocity for conveyors, packaging stations, or robotic joints. By using permanent-magnet excitation and electronic commutation, the unit provides repeatable motion control without the wear associated with brushed designs.

The motor has a friction torque of 0.46 Nm, which represents the mechanical drag the drive must overcome at startup. During operation, the motor can reach a shaft speed of 3000 rpm while maintaining smooth rotation through its 8 magnet poles. The torque constant is 0.73 Nm/A with sinusoidal excitation and 0.81 Nm/A with square-wave excitation. These values indicate how much torque the motor generates for a given amount of current under each excitation method. The back-EMF voltage constant is 89 V/krpm, allowing the controller to estimate speed from the generated voltage. Dynamic damping of 0.37 Nm/krpm limits overshoot, and a low winding resistance of 0.16 Ω helps reduce copper losses during operation.

Mechanical response is influenced by a rotor inertia of 0.0162 kg·m², giving the axis moderate energy storage for quick acceleration without placing an excessive load on the drive stage. Heat produced in the windings is transferred through a thermal path rated at 0.30 °C/W. When the stator reaches the thermostat trip point of 140 °C, the built-in switch opens to signal an overtemperature condition and help protect the motor from excessive heat. The motor windings have an inductance of 1.1 mH, enabling the amplifier to command rapid current transitions while filtering high-frequency noise. This inductance also affects current-loop tuning and the rate at which winding current can rise or fall in response to drive commands.