Product Description:

The PSI63C0.747-W2 frequency inverter, manufactured by Bosch Rexroth Indramat, belongs to the PSI Frequency Inverters series. It is a medium-frequency inverter designed to convert high line voltages into a controlled alternating output for induction heating, hardening, and other metal-processing work cells. By managing energy flow to resonant circuits or transformers, the unit supports industrial automation lines that require precise power modulation at medium frequencies. Its operating principle allows connected equipment to receive regulated power as process demands change.

At a line voltage of 480–690 VAC, the inverter connects directly to high-voltage three-phase supplies used in steel or glass production facilities. It provides an internal control rail of 24 VDC that can supply up to 2 A, eliminating the need for a separate supply for sensors, contactors, or fieldbus nodes. The housing has an IP20 rating, so the unit must be installed inside a cabinet while remaining protected against contact with fingers and similarly sized solid objects. Water cooling limits residual thermal losses to 420 W, helping reduce the amount of heat released into the cabinet. The electrical functions comply with the 3K3 climatic category of EN 60721-3-3, supporting operation in lightly conditioned production areas.

During operation, the inverter maintains a stable output when connected to plant power systems operating at 50 or 60 Hz. Its control section drives the medium-frequency bridge through an Ethernet-based timer module that supports synchronization with PLC programs. The unit weighs 25 kg, so suitable lifting equipment may be needed during panel installation. The permitted operating temperature range is +10 to +55 °C, while the permitted storage and transportation temperature range is -25 to +70 °C. Coolant connections route process heat to the facility’s water loop, reducing thermal buildup around nearby cabinet components.