PRD-P303250D-35 Kollmorgen
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The Kollmorgen PRD-P303250D-35 is a servo drive from the SP Servostar Servo Drives series with a continuous output current of 3 Arms and continuous power of 1.1 kVA at 230V three-phase. It features a nominal bus voltage of 325 VDC, peak output current of 9 Arms for 500 milliseconds, and weighs 1.61 kilograms.
Internal Product Review
The PRD-P303250D-35 is a Kollmorgen SP Servostar servo drive rated for 3 Arms continuous output current and 9 Arms peak output current. A 325 VDC nominal bus voltage and 15.5 kHz PWM frequency support stable drive response and clean motor control. Excellent electrical performance makes the drive a strong choice for precision servo applications.
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Product Description:
The PRD-P303250D-35 is a servo drive manufactured by Kollmorgen for the SP Servostar Servo Drives series. It converts a three-phase 230 V mains supply into a regulated DC bus and modulated phase currents so the connected servo motor tracks commanded motion profiles. By managing energy flow and providing real-time current control, the device enables accurate torque and position regulation in automated pick-and-place modules, packaging lines, and indexing tables that demand tight synchronization with PLC setpoints.
This model delivers a continuous output of 3 A RMS, establishing the steady-state current the motor windings can receive without thermal derating. When the application requires brief acceleration, the drive supplies a peak current of 9 A RMS for 500 ms, while surge events up to 30 A are tolerated for shorter intervals. With a 230 V three-phase input, the continuous power capacity is 1.1 kVA, supporting medium-frame actuators under constant load. Internal power is drawn from a DC link held at 325 VDC. This voltage supplies the IGBT bridge, which switches at a PWM rate of 15.5 kHz, while a motor-current ripple frequency of 31 kHz helps smooth shaft torque. Additional operating limits include a 20 A external shunt path for regenerative energy, a minimum dumping resistance of 20 ohms, a bus charging time of 0.25 seconds, and a fault relay that can switch 1 A for cabinet interlocks.
Protective thresholds include an overvoltage trip point of 430 VDC and an undervoltage trip point of 90 VDC, with an overtemperature cutoff at 80 °C to protect power components. Thermal loss during rated operation is 60 W, so enclosure airflow must dissipate this heat along with energy from the external shunt path. The unit weighs 1.61 kg, allowing DIN-rail or panel mounting without significant structural reinforcement.
