Product Description:

The PSI62C0.762-W1 is a medium-frequency inverter in the PSI Frequency Inverters series from Bosch Rexroth Indramat. Installed between a plant’s three-phase supply and an induction heating coil or high-speed spindle motor, the unit modulates voltage and frequency so that process power can be matched to material characteristics or spindle demands. By integrating a dedicated logic interface and internal control electronics, the inverter eliminates the need for external converters and supports closed-loop automation tasks where rapid thermal cycles or variable-speed machining are required.

The power section accepts line voltages of 400 to 480 VAC at a utility frequency of 50/60 Hz, then channels that energy through a water-cooled heat exchanger that transfers losses directly to a machine chiller instead of the control cabinet air. An auxiliary switch-mode supply delivers 24 VDC for control relays and sensors. It can furnish up to 2 A, so small actuators do not require a separate source. These input, cooling, and auxiliary ratings allow the inverter to maintain stable modulation during high reactive power demands while reducing the need for additional fan arrays and external low-voltage supplies.

For enclosure planning, the housing carries a protection rating of IP20, indicating protection against accidental finger contact with live parts while requiring installation in a sealed cabinet. Thermal management calculations must also account for 420 W of internal dissipation, which is the maximum cooling loss when the chiller circuit is operating. The inverter meets climatic class 3K3 under EN 60721-3-3 and remains fully functional from +10 to +55 °C. It can be stored or transported from -25 to +70 °C without damage. A built-in Ethernet-based timer synchronizes frequency profiles with plant controllers. The assembly has a mass of 25 kg, which must be considered when selecting cabinet supports and handling equipment.