PRD-P310250E-55 Kollmorgen
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The Kollmorgen PRD-P310250E-55 is part of the SP Servostar Servo Drives series and operates with a 230 VAC 3-phase input and continuous input current of 12 Amps. Its output includes 10 Arms continuous and 20 Arms peak, with a DC bus voltage of 325 VDC. This servo drive features a fault contact rating of 1 Amp, heat dissipation of 132 Watts, and an input power of 4.6 kVA.
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Product Description:
The PRD-P310250E-55 servo amplifier is manufactured by Kollmorgen as part of the SP Servostar Servo Drives series. This drive conditions incoming three-phase power and delivers controlled current to synchronous or induction servomotors. It supports position, velocity, and torque control loops in packaging lines, pick-and-place gantries, and other precision motion axes used in industrial automation. These closed-loop capabilities allow the amplifier to regulate motor behavior in response to commands and feedback from the connected motion system.
The power stage accepts a 230 VAC three-phase supply and draws a continuous input current of 12 A. Inside the rectifier and filter section, energy is stored on a DC bus maintained at 325 VDC. From that link, the inverter provides a continuous motor output of 10 A RMS, while the total apparent input power does not exceed 4.6 kVA. A carrier frequency of 8 kHz sets the resolution of the pulse-width modulation waveform, balancing acoustic noise and switching losses. Heat generated by the semiconductors and control electronics leaves the housing as 132 W of thermal dissipation. This heat output must be considered when arranging enclosure airflow and spacing around the amplifier.
Transient axis demands can be met with a peak phase current of 20 A RMS, which is available for short acceleration or disturbance events. Thermal monitoring triggers an over-temperature trip at 80 °C. The input circuit is protected by a 25 A line fuse that clears sustained overcurrent. Additional protection includes an overvoltage threshold of 430 VDC and an undervoltage cutoff at 90 VDC, preventing uncontrolled operation when bus levels move outside the permitted range. The internal logic supply eliminates the need for an external 24 V source, while a fault relay rated at 1 A reports operating status to upstream controllers. Soft-start circuitry restricts inrush current to 30 A and completes capacitor charging within 0.25 s, reducing electrical stress on contactors and circuit breakers.
