PSI64C0.772-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI64C0.772-W1 is a medium frequency inverter with a TriCore CPU, weighing 40 kg and measuring 653 mm in height, 288 mm in width, and 280 mm in depth. Part of the PSI Frequency Inverters series, it operates at a mains voltage of 400 to 480 VAC and uses water cooling with a minimum water flow of 4 liters per minute. The inverter supports Ethernet/IP networking and has a schedule frequency of 1000 Hz.
Internal Product Review
The PSI64C0.772-W1 is a Bosch Rexroth Indramat medium frequency inverter with water-cooled operation and a TriCore CPU. Support for Ethernet/IP networking and a 1000 Hz schedule frequency gives the unit fast, well-coordinated control in demanding power applications. A 400 to 480 VAC mains voltage and 220 A nominal current make the platform a strong fit for high-capacity installations.
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Product Description:
The PSI64C0.772-W1 medium-frequency inverter is produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for industrial automation, the unit converts three-phase plant power into a regulated medium-frequency source that drives induction heaters, seam welders, or other equipment that requires tightly controlled magnetic energy. Its architecture integrates power processing, control, and cooling into a single cabinet for simpler installation on the production floor. This arrangement keeps the main functional sections in one enclosure and reduces the amount of external interconnection required around the machine.
Electrical performance centers on a TriCore processor that controls pulse patterns, while the EtherNet timer synchronizes events across the plant network through native EtherNet/IP connectivity. The inverter accepts line supplies from 400 – 480 VAC and draws a nominal mains current of 220 A, then modulates the bridge at 1000 Hz to create the required output waveform. During steady load, internal losses are 69 W and rise to 210 W at maximum duty. The cabinet is 653 mm tall, 288 mm wide, and 280 mm deep, and it weighs 40 kg, which allows mounting in standard drive racks without reinforcement. These dimensions also help with enclosure layout and airflow planning around the installed unit.
Heat generated in the power stage is removed by a water-cooled plate, and the secondary circuit can dissipate up to 700 W when coolant flow and pressure are maintained. The cooling circuit requires at least 4 L/min of flow, with a pressure drop of 0.6 bar at that rate, to maintain effective heat transfer across the exchanger surfaces. The converter delivers high current for resistance-heating transformers, permitting a primary current ceiling of 1600 A and, when used with the PSG 3100 rectifier, a secondary pulse current of 54 kA. Maintaining the specified coolant conditions helps limit thermal stress during high-duty operation in process equipment.
