Product Description:

The PSI65C0.759-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It serves as the power conversion stage in automated cells that need tightly regulated medium-frequency energy, such as induction heaters or high-speed spindle drives. By modulating the voltage and frequency delivered to the load, the unit allows production machinery to match thermal or mechanical demand without mechanical gear changes or external transformers.

The main input section accepts three-phase power within a range of 400–480 VAC, and it synchronizes with industrial grids that operate at 50 or 60 Hz. An integrated 24 V auxiliary supply maintains the control electronics at 24 VDC and can provide up to 2 A for sensors, relays, or interface modules. Application wiring is protected to IP20, so live terminals are protected against finger contact when the cabinet door is open. Water passes through an internal heat exchanger, providing water-cooled operation that removes semiconductor losses directly from the module and lowers the enclosure temperature. Timer and diagnostic functions are accessed over an Ethernet connection, simplifying integration with PLC supervision or SCADA logging.

The climatic category is 3K3 according to EN 60721-3-3, indicating suitability for control rooms with moderate humidity and limited dust. Reliable operation is maintained from +10 to +55 °C, while storage and transportation are permitted between -25 and +70 °C without performance degradation. Cooling water must absorb up to 420 W of thermal dissipation under full load, allowing the inverter to run continuously without derating. The assembly weighs 25 kg and requires mounting hardware and cabinet supports rated for its full installed mass. Its enclosure dimensions and water connections must be accommodated when arranging nearby modules, hoses, and electrical conductors. Adequate clearance around the connection points allows the cooling circuit and power wiring to be routed without excessive bends or mechanical strain.