Product Description:

The PSI63C0.772-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. The unit conditions three-phase power and supplies controlled intermediate frequencies to induction coils or high-speed machinery, giving production cells electrically adjustable heat or speed without requiring mechanical gear changes. Its role in industrial automation is to convert utility power into a precisely timed drive signal that can be synchronized with PLC commands. This controlled conversion supports repeatable process timing in automated production equipment.

The inverter connects to plant power at 400 to 480 VAC and tolerates utility grids that operate at 50 or 60 Hz, allowing it to serve both European and North American installations. An integrated power supply module outputs a 24 VDC control voltage and can source up to 2 A for contactors, sensors, and internal logic circuits, eliminating the need for an external auxiliary supply. Thermal energy produced by the switching elements is removed through forced air, with permissible cooling losses reaching 360 W. This value can be used to determine the airflow required within the enclosure. The Ethernet timer function provides clock-synchronized trigger signals for process sequences controlled through the connected automation system.

The housing carries an IP20 rating, so the inverter must be mounted inside a protective cabinet while remaining accessible for wiring and inspection. Reliable operation is permitted at ambient temperatures from +10 to +55 °C. The components can withstand storage or transit temperatures from -25 to +70 °C without degradation. Climatic category 3K3 under EN 60721-3-3 indicates suitability for enclosed locations with moderate humidity and airborne contaminants. The inverter has a mass of 20 kg, so its cabinet structure and mounting hardware must provide adequate support. Secure fastening also helps prevent unwanted movement when the surrounding machinery produces vibration.