PSI65C0.776-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI65C0.776-W1 is a medium frequency inverter in the PSI Frequency Inverters series, weighing approximately 25 kilograms. It uses water cooling, supports a mains voltage of 400 to 480 VAC at 50 or 60 Hz, and offers a maximum output current of 2 Amps at 24 VDC from its integrated power supply unit. The unit features IP20 protection and operates within a temperature range of +10 to +55 degrees Celsius.
Internal Product Review
The PSI65C0.776-W1 is a medium frequency inverter with water-cooled thermal management for stable high-duty operation. Support for 400 - 480 VAC mains input and 50 or 60 Hz service makes integration straightforward across standard industrial power systems. IP20 protection and an integrated 24 VDC power supply make the unit a strong choice for controlled industrial environments.
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Product Description:
The PSI65C0.776-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. As a stand-alone power converter, it supplies controlled medium-frequency output to induction heaters, high-speed spindles, or similar loads. It provides the variable power needed for precise thermal or machining processes in automated production lines. The inverter can operate as the central power conversion stage for equipment that requires adjustable output during repeated heating or motion cycles.
This inverter connects directly to three-phase mains rated at 400 to 480 VAC and accepts line frequencies of 50 or 60 Hz, so it fits standard industrial power grids without step-up transformers. The housing has an IP20 protection rating, providing protection against finger contact while requiring installation inside a suitable cabinet. Heat generated by the power stage is transferred to a plant coolant circuit through a water-cooling system. This cooling method keeps internal semiconductor temperatures low and limits heat transfer to the enclosure air, with a maximum cooling loss of 420 W. The unit meets climatic category 3K3 under EN 60721-3-3, making it suitable for production areas with moderate humidity. A built-in timer interface labeled Ethernet provides cycle or dwell control over TCP/IP without requiring external relays.
An integrated auxiliary supply delivers a 24 VDC control voltage at up to 2 A, allowing it to power sensors, contactors, or local I/O without an additional power supply. Continuous operation is permitted within an ambient temperature range of +10 to +55 °C. Storage and transport are permitted from -25 °C to +70 °C when the unit is not operating. The unit weighs 25 kg, which reduces the structural load placed on the cabinet compared with larger air-cooled drives. The coolant circuit must provide adequate flow and heat removal for the connected inverter. Ethernet timing commands can be synchronized with PLC logic for coordinated heating cycles or spindle ramps.
