PRD-P310250D-55 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen PRD-P310250D-55 is part of the SP Servostar Servo Drives series and has a continuous output power of 3.5 kVA with a main input power of 4.6 kVA. It operates on three-phase 230 Vac input at 47-63 Hz, and provides a main output current of 10 Arms with a peak current of 20 Arms. The drive features heat dissipation of 132 W, weighs 2.69 kg, and operates in temperatures from 5 to 45°C.
Internal Product Review
The PRD-P310250D-55 is a Kollmorgen SP Servostar servo drive rated for 3.5 kVA continuous output power with a 3-phase 230 Vac ±10% input. Strong current delivery at 10 Arms continuous and 20 Arms peak supports demanding motion applications, making the unit a highly capable choice for precision servo systems.
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Product Description:
The PRD-P310250D-55 is a three-phase servo drive manufactured by Kollmorgen within the SP Servostar Servo Drives series. It operates as the power interface between the plant mains and a matched servo motor. By converting fixed-frequency AC into a regulated, high-bandwidth current stream, the drive enables precise velocity and torque control in industrial automation cells, material-handling axes, and packaging stations.
The drive can supply a continuous apparent power of 3.5 kVA, indicating the sustained electrical load it can deliver to the motor windings without derating. To support that output, the upstream supply must furnish 4.6 kVA, a figure useful for sizing circuit protection and cabling. The drive supplies a nominal phase current of 10 Arms; during acceleration or shock loading, the controller can surge to 20 Arms for short intervals to provide additional dynamic torque. Power devices inside the unit switch at a carrier frequency of 8 kHz, which affects the voltage waveform, acoustic noise, and motor heating. An internal current-loop bandwidth of 16 kHz further smooths ripple so the motor receives near-sinusoidal current under closed-loop regulation.
Total heat loss in the electronics equals 132 W, which guides panel ventilation design. The input section accepts a three-phase supply of 230 Vac ±10% and remains synchronized with utility grids operating from 47 to 63 Hz to accommodate installations in different regions. Rated ambient operation spans 5 to 45 °C; above this range, the controller may derate or trip. Additional safeguards include an overtemperature cutoff at 80 °C, an overvoltage limit of 430 Vdc, and an undervoltage threshold of 90 Vdc, protecting both the IGBTs and the connected motor. The drive has a frame width of 99 mm and a mass of 2.69 kg, allowing installation in dense rack layouts without placing excessive load on the mounting hardware.
