PSI6100.357-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6100.357-L1 is a medium frequency inverter in the PSI Frequency Inverters series. It features an integrated power supply unit with a 24 VDC output voltage and a maximum output current of 2 A, and operates on a mains voltage of 400 to 480 VAC at 50 or 60 Hz. The inverter is air cooled, offers IP20 protection, and weighs approximately 20 kilograms.
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Product Description:
The PSI6100.357-L1 belongs to the PSI Frequency Inverters series manufactured by Bosch Rexroth Indramat. Classified as a medium-frequency inverter, it converts plant-level three-phase power into controlled, higher-frequency energy for induction heaters, high-speed spindles, and other automation loads that require adjustable electromagnetic output. The integrated conversion stage provides the controlled output needed to regulate connected industrial equipment. Its auxiliary supply supports nearby low-voltage devices, while the fieldbus timing hardware coordinates command sequences within the automation system. Integrating these functions into one frame reduces cabinet space and simplifies installation inside machine cells.
The inverter accepts a mains input range of 400 to 480 VAC, allowing operation on common industrial distribution systems without tap changers. Its control electronics synchronize with 50 or 60 Hz power systems, so an external frequency converter is unnecessary. An internal supply generates 24 VDC with a maximum output current of 2 A for sensors or relays located near the drive. Waste heat is removed through an air-cooled design, which uses ambient airflow to dissipate switching losses. The INTERBUS timer maintains command sequencing between the inverter and the connected control system. Climatic category 3K3 permits operation in light-industrial indoor locations with moderate temperature variation, provided the unit is installed in a suitable enclosure.
The housing has a degree of protection of IP20, shielding live parts from finger contact while requiring installation in a clean cabinet. Continuous operation is permitted within an ambient temperature range of +10 to +55 °C. Operation outside this range may require derating or additional cooling, while the permitted storage range extends from -25 °C to +70 °C when the unit is powered down. At full load, the switching devices release up to 360 W of heat, so cabinet airflow must account for this thermal load in addition to heat generated by nearby equipment. The inverter has an approximate mass of 20 kg, which must be considered when selecting mounting hardware and planning safe lifting procedures. Adequate clearance around the air passages helps prevent heat buildup and supports stable operation within the permitted ambient temperature range.
