Product Description:

The PSI63C0.783-L2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. The unit converts high-voltage three-phase mains power into controlled intermediate frequencies so production equipment, such as induction heaters or welding generators, can operate at set power levels under PLC direction. Timing and diagnostic data are exchanged through the designated EtherNet timer interface. This interface enables synchronous triggering with upstream controls without requiring additional fieldbus cards.

The power stage accepts line supplies from 480–690 VAC at either 50 or 60 Hz, allowing direct connection to common industrial networks without step-up transformers. An integrated auxiliary source delivers 24 VDC at up to 2 A, allowing relays, sensors, or a drive controller to be energized without a separate supply. Thermal management relies on airflow across the internal heat sinks. During continuous operation, the inverter produces 360 W of heat loss that must be removed by the enclosure airflow. The assembly follows the 3K3 climatic category of EN 60721-3-3, which specifies permissible humidity and vibration conditions for machine-room installations.

The housing has a protection rating of IP20, which prevents contact with live parts while allowing installation in clean control cabinets. Reliable operation is permitted from +10 to +55 °C, while non-energized modules may be stored from -25 to +70 °C without performance degradation. The inverter weighs 21 kg, so the panel and mounting hardware must provide adequate structural support. Because the enclosure is not sealed against water or fine airborne contamination, the installation location should protect the unit from moisture, conductive dust, and direct exposure to production debris. Adequate clearance around the ventilation paths is also necessary to maintain airflow and prevent heat from accumulating near adjacent components.