Product Description:

The 4VM62-024-4 is a permanent-magnet DC servo motor built by Pacific Scientific for the Low Inertia PMDC Servomotors series. This compact unit couples a low-inertia rotor with brushed commutation so machine axes can accelerate and settle quickly under closed-loop control. In automated packaging, labeling, or light pick-and-place stations, the motor converts direct-current energy into precise rotary motion that can be scaled by drive electronics to match position or velocity commands.

At a rated bus voltage of 24 VDC, the armature draws a steady 6.7 A and develops a continuous stall torque of 0.466 N·m, allowing the shaft to hold a load without overheating when motion is momentarily halted. Once released, the rotor reaches its nominal speed of 3250 rpm, balancing torque density with gearbox input limits. Iron and copper losses produce 72 W of internal heat during continuous operation, and this heat is removed by conduction through the frame and by ambient airflow. The motor windings accept square-wave drive signals and remain within safe temperature limits because the design accounts for heat generated during commutation.

The motor has a mechanical output rating of 168 W, and brief load surges can be met by an armature pulse current of 47 A without demagnetizing the permanent field. Thermal paths have a resistance of 1.81 °C/W, so each watt of loss raises the winding temperature by less than two degrees Celsius. Position feedback is supplied by an optical encoder that operates from a regulated 5 VDC rail and consumes 150 mA. The encoder uses dual channels for quadrature information, emits square-wave signals, and relies on an LED light source. No index marker is provided, so homing must be handled by external sensors. The optical encoder maintains position accuracy without adding substantial inertia to the shaft assembly.