PSI63C0.761-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.761-L1 is a medium frequency inverter in the PSI Frequency Inverters series. It has a mains voltage rating of 400 to 480 VAC and operates at either 50 or 60 Hz. The unit provides an integrated power supply output of 24 VDC at a maximum of 2 Amps and has IP20 protection. The inverter is air cooled, has cooling losses of 360 Watts, and weighs approximately 20 kilograms.
Internal Product Review
The PSI63C0.761-L1 is a well-designed medium frequency inverter with air-cooled operation. Input compatibility across 400 to 480 VAC and 50 or 60 Hz supports straightforward integration into standard industrial power systems. The integrated 24 VDC power supply rated to 2 A is a particularly practical feature for control-side support.
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Product Description:
The PSI63C0.761-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat and supplied under the PSI Frequency Inverters series. Serving as the power interface between the factory mains and high-speed induction motors, the unit modulates voltage and frequency so motion controllers can command rapid acceleration without requiring oversized mechanical gear stages in automated production lines. It also incorporates an internal low-voltage supply for auxiliary loads, reducing the amount of panel wiring required. The inverter can therefore power connected control components without a separate low-voltage supply for every auxiliary circuit.
Thermal management relies on an air-cooled design that draws cabinet air across the heat sink, so no liquid circuit is required. The enclosure meets IP20, making live parts finger-safe while requiring installation inside a clean cabinet. Incoming power ranges from 400 to 480 VAC, allowing the inverter to connect to European or North American 460 V power grids. Its rectifier synchronizes with 50/60 Hz lines without requiring tap changes. At full load, the assembly dissipates 360 W of heat, which must be considered when sizing cabinet airflow. The unit meets climatic category 3K3 under EN 60721-3-3 and is suitable for temperature-controlled indoor areas with limited condensation. An Ethernet timer port supports synchronous triggering for coordinated machine operations.
The inverter contains an auxiliary supply that delivers 24 VDC for fan relays, drive controls, or encoder power. This rail is limited to 2 A, so an external supply is necessary when connected peripherals require additional current. Rated operating performance is maintained within an ambient temperature range of +10 to +55 °C. Adequate ventilation must be provided when the inverter operates near the upper temperature limit. During storage or transportation, the unit withstands temperatures from -25 to +70 °C without functional degradation, provided that condensation does not form. Its installation weight is 20 kg, so the mounting surface and enclosure supports must be capable of carrying the unit securely. Sufficient clearance around the housing also helps preserve airflow and provides access to power, control, and communication connections.
