PSI63C0.758-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.758-W2 is a medium frequency inverter that belongs to the PSI Frequency Inverters series. It uses a TriCore CPU and features an Ethernet interface, supporting mains voltages from 480 to 690 VAC with a nominal current of 110 Amps. The inverter is water cooled, with a minimum cooling water flow of 4 liters per minute and a water pressure drop of 0.1 bar at that rate.
Internal Product Review
The PSI63C0.758-W2 is a medium frequency inverter that combines water-cooled operation with efficient thermal management. Support for 480 to 690 VAC mains voltage and an Ethernet I/O interface such as PROFINET makes integration into higher-power process equipment straightforward. A TriCore CPU adds confident processing performance, while 36 kA maximum secondary current highlights the unit’s strong output capability.
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Product Description:
The PSI63C0.758-W2 inverter is produced by Bosch Rexroth Indramat as a member of the PSI Frequency Inverters series. It functions as a medium-frequency power converter that supplies controlled current and voltage to induction heating coils, melting furnaces, or similar loads in automated manufacturing cells. This supports repeatable heating output in processes that depend on stable electrical power, controlled energy delivery, and consistent thermal response during production. Carrier modulation is optimized for a fundamental frequency of 1 kHz, aligning the inverter output with workpieces that need shallow eddy-current penetration.
Cabinet basic power dissipation is 100 W, so enclosure ventilation requirements remain moderate when the unit idles. During operation, heat is extracted through a water-cooled exchanger; a minimum flow of 4 L/min keeps semiconductor junctions below their rated temperature while the hydraulic circuit experiences only 0.1 bar of pressure drop at that flow rate. Internal control is handled by a TriCore CPU that coordinates gate firing and communicates through an Ethernet-based PROFINET interface. The drive accepts three-phase supply between 480 – 690 VAC and draws a nominal mains current of 110 A under rated conditions. Field wiring is executed on copper bus bars that require at least 35 mm² of connection area, while the spring clamp terminals accept conductors up to 50 mm². An integrated Ethernet timer synchronizes cycle triggers with the plant controller without discrete I/O lines.
At full load the cabinet thermal losses rise to 140 W, a value used to size the water chiller rather than the ambient air cooling around the enclosure. The power stage can momentarily draw a primary current of 800 A, and the transformer secondary is rated to deliver fault currents up to 36 kA; these ratings require appropriate upstream fuse coordination and busbar cross-section. Because the internal bus link is laminated copper and the device bays are immersed in the coolant loop, additional air heat sinks are unnecessary. This cooling arrangement helps limit heat buildup around neighboring electrical components inside the cabinet and reduces the need for large internal air channels.
