Product Description:

The PRD-P306250D-45 is a servo drive manufactured by Kollmorgen and supplied through the SP Servostar Servo Drives series. It receives rectified DC power, switches it through an IGBT bridge, and delivers three-phase current to synchronous motors so that automated machinery can position loads with programmable speed and torque. The drive provides a ±15 VDC analog supply, simplifying connections to external control cards. Its internal 8 VDC rail powers the control logic and draws only 0.2 A, so no external auxiliary supply is required.

The drive can deliver a continuous phase current of 6 A, while short demands are handled with a peak capability of 18 A for 0.5 s. These current levels establish the available continuous torque and short-term acceleration capability. When connected to a 115 V single-phase supply, the drive supports 1.1 kW of mechanical output, and the rating rises to 2.2 kW on a 230 V three-phase supply. Pulse-width modulation occurs at 16 kHz, and the analog command path scales motor current at 1.70 A per volt so that ±3 V covers the nominal torque range. Internally, current feedback is returned at 2.12 A per volt, allowing the digital signal processor to close the loop without additional scaling. Thermal losses reach 84 W at full output and must be removed through adequate panel ventilation.

The motor-current ripple frequency is filtered at 32 kHz, reducing audible noise while limiting inductive heating. The inverter shuts down if the bus voltage rises to 430 VDC, falls to 90 VDC, or if the heat sink reaches 118 °C. These protection thresholds help prevent semiconductor damage during power surges, brownouts, excessive thermal loading, or stalled-motor conditions. An internal watchdog disconnects the IGBT bridge when a trip threshold is crossed. The shutdown response prevents the power stage from continuing to energize the motor after the drive detects an unsafe operating condition.