Product Description:

The PSI63C0.638-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase mains power into controlled medium-frequency output for induction heating, hardening, or similar industrial automation tasks that require adjustable energy. The device uses a three-phase medium-frequency inverter topology and integrates a 24 V logic supply, allowing its control electronics to be powered directly from the unit.

The power section accepts 400 to 480 VAC at 50 or 60 Hz and can deliver a peak output current of 800 A while sustaining a nominal system current of 110 A. Cabinet heat dissipation at maximum power reaches 170 W. The air-cooled design limits thermal stress, with total cooling losses capped at 360 W. Internal switching operates at a clock frequency of 1 kHz, and the inverter can store up to 256 user programs. Logic functions are supported by a 3.6 V backup battery, while process coordination is handled through a DeviceNet timer. A 9-pin D-Sub port serves as the programming connector. The terminals accommodate power wiring with cross-sectional areas of up to 50 mm² on the line side and 35 mm² on the load side. The maximum secondary current is 36 kA when the unit drives a PSG 3100 transformer.

The enclosure has an IP20 rating, protecting against accidental contact with internal components while permitting airflow through the housing. Reliable operation is supported from +10 °C to a maximum ambient temperature of 55 °C under climatic category 3K3. The integrated power supply provides 24 VDC at up to 2 A for external sensors or actuators, reducing the need for a separate supply. Storage and transportation are permitted at temperatures ranging from -25 °C to +70 °C. The inverter weighs approximately 20 kg, which should be considered when selecting mounting hardware and handling equipment. Cooling air must circulate through the unit without obstruction to keep internal components within their permitted temperature limits.