Product Description:

The PSI62C0.336-W1 medium-frequency inverter is manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. As a cabinet-mounted power module, it converts three-phase mains power into a high-frequency PWM output that drives induction heating coils, welding transformers, and other fast-switching loads used in automated production lines. By supplying controllable medium-frequency power, the unit enables precise thermal profiles and short cycle times in industrial automation. Its power conversion design supports processes that require rapid and repeatable energy delivery. The cabinet-mounted format also allows the inverter to be integrated with the associated control and power-distribution equipment.

It operates across an input range of 400–480 VAC and draws a nominal line current of 220 A when delivering rated power. The converter core is kept within its operating limits by a water-cooled heat sink. The cooling circuit requires a minimum coolant flow of 4 L/min and has a pressure drop of 0.6 bar at 4 L/min, allowing the use of low-power pumps. Base cabinet losses are 69 W, while process-dependent dissipation can rise to a maximum of 700 W, which should be considered when sizing the chiller. A 24 VDC logic rail supplies the control electronics, and the power stage generates PWM at 1 kHz on the primary side. Conductors with cross-sectional areas up to 95 mm² connect to the bus bars, helping reduce resistive losses during current transients.

The inverter has an IP20 enclosure rating, so it must be installed in a closed cabinet and protected from water and small foreign objects. A 32-bit TriCore CPU controls modulation and diagnostics while managing the INTERBUS fieldbus and timer channels. This processing architecture provides deterministic communication with welding controllers during time-sensitive production sequences. For short welding bursts, the inverter can deliver a peak primary current of 1200 A. When connected to a PSG 3100 transformer, it can produce a secondary current of up to 54 kA. The housing measures 653 mm high and 288 mm wide, allowing it to fit standard equipment racks while providing room for cable routing and coolant connections. Adequate cabinet clearance is required around the installed unit to accommodate its power conductors, communication wiring, and water-cooling lines.