PSR3-230/50-01-003 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The PSR3-230/50-01-003 is a servo power supply from Kollmorgen, part of the PSR Servo Power Supplies series. It features a nominal DC bus of 325 VDC and supports 50 Amps per phase. The unit offers 0.0044 Farads bus capacitance and allows external regeneration power up to 600 Watts.
Internal Product Review
The PSR3-230/50-01-003 is a well-engineered Kollmorgen servo power supply with a 325 VDC nominal DC bus and a 50 Amps/phase current rating. A 0.0044 F bus capacitance supports stable energy handling, while 600 W max external regen power adds strong braking support for demanding servo systems.
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Product Description:
The PSR3-230/50-01-003 is a regulated DC power module manufactured by Kollmorgen for the PSR Servo Power Supplies series. Designed for systems with a 230 VAC input, the unit provides the central power source for multiple servo axes in automated machinery. It supplies a controlled DC link to compatible SERVOSTAR amplifiers and other motion controllers connected within the drive system. The module also manages regenerative energy produced when motors decelerate, preventing excess energy from raising the DC-link voltage beyond the permitted operating range.
The model supports phase currents of up to 50 A per phase, allowing each mains leg to carry the required continuous input current without activating the protective circuitry. An integrated bus capacitance of 0.0044 F smooths voltage ripple, supplies energy during brief peak motor demands, and reduces stress on the upstream rectifier stage. Under nominal operating conditions, the DC bus is regulated at 325 VDC to provide the voltage level required by compatible servo amplifiers. When regenerative energy raises the link voltage to 385 VDC, an internal switch activates the dynamic-braking circuit. The circuit then directs surplus electrical energy to an external resistor instead of allowing the bus capacitors to become overcharged.
The braking network can dissipate up to 600 W through the connected resistor during repeated deceleration events. Kollmorgen recommends an external resistance of 4.5 ohms to convert surplus electrical energy into heat while maintaining the intended braking response. As the DC-link voltage decreases, the braking transistor switches off at 365 VDC, reducing unnecessary thermal loading after the voltage returns to an acceptable level. Panel airflow should account for the heat released by the external braking resistor during frequent or high-energy stops. The resistor should also be installed with adequate clearance from wiring, electronic modules, and other components that could be affected by elevated surface temperatures.
