PSR4/5-220 Kollmorgen
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The Kollmorgen PSR4/5-220 is a power supply from the PSR Servo Power Supplies series with a rated output power of 6.0 kW and a voltage rating of 230 VAC. It features a current rating of 20 Amps per phase, a peak current of 40 Amps per phase for 2 seconds, and internal regen power of 40 Watts. The unit measures 80 mm in width, 340 mm in height, 280 mm in depth, and has a weight of 5.44 kg.
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Product Description:
The PSR4/5-220 is a servo power supply manufactured by Kollmorgen as part of the PSR Servo Power Supplies series. It converts incoming AC power into a regulated DC bus for compatible servo amplifiers in multi-axis automation systems. The unit also provides shunt dissipation, allowing regenerative energy from decelerating motors to be absorbed without causing excessive bus voltage. Its centralized design allows several connected axes to draw power from a common source inside an automation cabinet.
This model accepts a single-phase input of 230 VAC and delivers a rated output of 6.0 kW to the shared DC bus. Its continuous load capacity is 20 A per phase, while the two-second overload capacity reaches 40 A per phase to support brief acceleration demands. A bus capacitance of 0.00297 F stores energy and smooths transient loads from connected amplifiers. The internal shunt can carry up to 32 A when regenerative energy raises the bus voltage. A soft-start circuit limits inrush by precharging the capacitors, although the initial surge current can reach 80 A before decreasing. An external braking resistor with a minimum resistance of 8.8 ohms can be connected when an application requires greater regenerative capacity. The enclosure is 80 mm wide, allowing several modules to be installed side by side while preserving cabinet space.
The enclosure measures 340 mm high and 280 mm deep, while the complete assembly weighs 5.44 kg. Its vertical mounting orientation supports orderly placement with related servo components and provides a clear path for cabinet airflow. During startup, the bus capacitors reach full charge in 0.25 s, reducing the delay between power application and drive availability. The built-in regenerative circuit dissipates 40 W continuously, allowing moderate braking energy to be handled without an external resistor. Higher-inertia loads or repeated rapid deceleration may require the available external braking connection to prevent excess energy from accumulating on the DC bus. Appropriate panel spacing and ventilation help remove heat generated by rectification, continuous loading, soft-start operation, and regenerative dissipation.
