PSR4/5-212

The Kollmorgen PSR4/5-212 is an industrial-grade servo power supply in the PSR Servo Power Supplies series, designed to deliver robust and reliable performance in demanding automation environments. This unit provides 3.6 kW output power through a regulated DC bus and features a nominal 310 VDC output voltage to drive high-performance servo axes. Built for versatility, the PSR4/5-212 accepts a wide range of input configurations, supporting 1 to 3 phase operation and ensuring compatibility with global power systems. With a continuous current rating of 12 Amps continuous current, the power supply maintains steady energy delivery under sustained loads, while its ability to source 48 Amps peak current for 50 msec addresses transient demands and acceleration peaks without system interruption. Rugged construction and precision control electronics make this unit a cornerstone component for high-precision motion control applications.

The PSR4/5-212’s electrical characteristics are defined by a comprehensive set of specifications. It accepts a 160-253 VAC main AC line input voltage at a frequency of 47-63 Hz, ensuring stable operation across regional power networks. The separate control electronics are powered by a 90-132 VAC control AC line input voltage, isolating logic circuits from main bus disturbances. Phase flexibility is guaranteed by its 1-3 phase input capability, allowing retrofit into existing infrastructures. Transient compensation is managed through a soft start surge current of 150 Amp, limiting inrush at power-up, while a charge time of 25 msec max ensures rapid readiness. Peak current handling includes 20 Amps (50 msec RMS/phase) and 24 Amps (2 sec RMS/phase), delivering short-term high current bursts. Continuous dissipation is specified as 40 W power dissipation, with an internal heat dissipation of 120 W managed through integrated thermal pathways. The built-in 15 Amp shunt regulator current protects against overvoltage and supports regenerative energy recirculation.

Operational performance is optimized for efficiency and reliability. The shunt regulator dissipates excess energy during regenerative braking, maintaining DC bus stability and protecting downstream drives. Thermal management is achieved via low-resistance current paths and integrated heat sinks, ensuring that 120 W internal heat dissipation does not degrade long-term reliability. Fast transient response is secured by the 25 msec charge time, minimizing DC bus voltage sag during load changes. Soft start circuitry limits inrush to 150 Amp, reducing mechanical stress on upstream fuses and contactors, while peak current capabilities of 48 Amps for 50 msec and 24 Amps for 2 sec accommodate rapid acceleration profiles in robotics and machine tool axes. Protective monitoring of DC voltage, current, and temperature enables safe shutdown in fault conditions.

System integration is streamlined through standardized interfaces and mounting provisions, facilitating incorporation into Kollmorgen and third-party servo drive cabinets. The PSR4/5-212’s remote inhibit and fault signaling support centralized control architectures and predictive maintenance schemes. Its compact footprint and multi-phase input versatility make it well suited for CNC machines, packaging lines, robot cells, and printing presses. Engineers targeting high-precision motion control and energy-recovering drive systems will find the PSR4/5-212 from Kollmorgen to be an optimal solution for enhanced uptime and performance.