Product Description:

The PSI63C0.632-L2 inverter is a medium-frequency power converter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase utility power into a regulated medium-frequency output suitable for induction heating, brazing, and welding stations that require tightly controlled, high-current energy. By incorporating signal processing and communication hardware, the unit integrates directly into automated cells that require digital coordination of power delivery.

It accepts a line supply of 480–690 VAC, allowing installation on common high-voltage distribution networks. The nominal current draw is 110 A, so upstream protection devices must support that continuous load. Operation is synchronized with grid cycles at 50/60 Hz, while the internal medium-frequency stage switches at 1000 Hz to provide efficient energy transfer to the load coils. Conductors connected to the mains terminals require a cross-sectional area of at least 35 mm² to carry the rated current without excessive temperature rise. The inverter’s DeviceNet interface and integrated timer functions simplify synchronization with external process sequencers. A separate node address can be assigned from the front panel to support standardized fieldbus communication and diagnostics during operation.

Thermal management is handled by an air-cooled design that dissipates 100 W under baseline cabinet conditions and up to 200 W when the inverter delivers maximum output. The primary circuit can momentarily reach 800 A, while the isolated secondary can supply up to 36 kA to the workpiece for high-current industrial processes. Terminal lugs accept conductors up to 50 mm², providing capacity for the required power connections. A TriCore CPU monitors operating values while processing 64 input channels and 64 output channels for coordination with plant controllers. Internal sensors track the heat-sink temperature so the control system can verify adequate airflow and respond to abnormal thermal conditions.