Product Description:

The PSI63C0.630-L2 medium-frequency inverter is produced by Bosch Rexroth Indramat and belongs to the PSI Frequency Inverters series. This device converts the incoming high-voltage supply into a controllable medium-frequency output required for induction heating, brazing, or similar thermal processes. By supplying a precisely timed current waveform, it lets the surrounding system synchronize power delivery with motion sequences or temperature profiles, making it a core component in automated metal-working and materials-processing lines.

In the control section, a TriCore CPU updates gating signals at a clock frequency of 1 kHz. Internal electronics draw from a separate 24 VDC supply so the logic stays active during mains dips. The power stage accepts three-phase input between 480 – 690 VAC, and the enclosure carries an IP20 rating, so it must be mounted inside a cabinet. Heat is removed by an air-cooled system that relies on forced airflow, which requires 100 mm of clearance around the heat sink. DeviceNet serves as both the I/O link and the timing channel, allowing a PLC to trigger ramps and read status. An internal MOV suppresses overvoltage spikes on the DC bus, and the maximum cabinet loss is 200 W.

On the power side, the mains nominal current is 110 A. During brief start-up peaks, the inverter tolerates 800 A on the primary and can deliver a secondary pulse of 36 kA. Output lugs accept conductors up to 50 mm², while the minimum allowed cross-section is 35 mm². Continuous operation is permitted up to an ambient temperature of 55 °C, and operation above that temperature requires derating to remain within thermal limits. These current, temperature, and wiring values set the operating range for fuse selection, busbar sizing, and cabinet ventilation.