PSI6300.773-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.773-L2 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage range of 480 to 690 VAC and operates at 50 or 60 Hz. The unit is air cooled, has an IP20 protection rating, and weighs approximately 21 kilograms.
Internal Product Review
The PSI6300.773-L2 is a medium frequency inverter with air-cooled operation. IP20 protection and a 480 - 690 VAC mains range make the unit well suited for controlled industrial installations. The integrated 24 VDC power supply rated to 2 A is a valuable feature for dependable auxiliary power delivery.
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Product Description:
The PSI6300.773-L2 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts high-voltage three-phase mains power into a regulated medium-frequency output that can drive induction heating coils, resonant converters, or other plant equipment that benefits from variable-frequency energy. Within an automation cell, the unit supplies both the oscillating power stage and a 24 V control section, allowing machine controllers to govern heating profiles or process intensity through standard fieldbus interfaces.
The enclosure carries a protection rating of IP20, so it must be mounted inside a cabinet while remaining accessible for wiring and service. Its integrated supply provides 24 VDC with a maximum output current of 2 A, providing power for logic circuits and sensors without requiring an external source. The power section accepts line supplies from 480 to 690 VAC and operates at either 50 or 60 Hz, allowing the same unit to serve North American and European installations. Air-cooled heat sinks remove switching losses from the medium-frequency output stage. An internal fan directs plant air across the fins to help maintain a stable semiconductor temperature during operation.
Total cooling losses are limited to 360 W, a value that sets the cabinet ventilation requirements. Continuous operation is permitted within an ambient temperature range of +10 to +55 °C, while storage is permitted from -25 to +70 °C when the inverter is not operating. The climatic category of 3K3 under EN 60721-3-3 permits operation in workshop atmospheres with moderate dust and humidity. With a mass of 21 kg, the chassis can be positioned in a suitable cabinet using appropriate handling practices. Ethernet timer functions support synchronization with central motion or process controllers, allowing frequency ramps to follow coordinated operating sequences across multiple machines.
