PSI6101.321-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6101.321-L2 is a medium frequency inverter in the PSI Frequency Inverters series. It features air cooling, supports a mains voltage range of 480 to 690 VAC, and runs at either 50 or 60 Hz. The device has IP20 protection, an integrated power supply unit that outputs up to 2 amps at 24 VDC, and weighs about 21 kilograms.
Internal Product Review
The PSI6101.321-L2 is a medium frequency inverter in the Bosch Rexroth Indramat PSI Frequency Inverters series. Air-cooled construction and IP20 protection support clean cabinet integration and stable operation in controlled industrial settings. The integrated 24 VDC power supply with up to 2 A output current is a strong advantage for streamlined system design.
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Product Description:
The PSI6101.321-L2 medium-frequency inverter is produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts high-voltage, three-phase mains power into a controllable output that supplies induction heaters, spindle drives, and other automation loads requiring variable medium-frequency power. An onboard control timer that follows the INTERBUS profile coordinates the inverter with PLC hardware on the machine network. This arrangement supports synchronized control of the connected load and allows operating commands to be exchanged through the industrial communication system.
This unit is designed for installation inside switchgear, where the housing provides an IP20 ingress protection rating and relies on air cooling to remove heat from the power stage. During full-load operation, the power modules release up to 360 W of heat, so the installation must provide unobstructed airflow around the inverter. A climatic category of 3K3 per EN 60721-3-3 confirms suitability for clean production areas with moderate humidity. The integrated power supply delivers a regulated 24 VDC bus with a maximum current of 2 A for control electronics, contactors, and sensors, eliminating the need for a separate auxiliary supply. Classification as a medium-frequency inverter indicates that the output carrier frequency is higher than the standard mains frequency but lower than the frequencies used by radio-frequency drivers. This operating range is suitable for induction processes and fast-switching motor windings.
The inverter accepts an input range of 480–690 VAC at 50 or 60 Hz, allowing connection to common industrial utility grids without an external transformer. Continuous operation is permitted within an ambient temperature range of +10 to +55 °C. Storage or transportation is permitted within a temperature range of -25 to +70 °C without damage to the components or insulation systems. A total mass of 21 kg allows the unit to be secured in a switchgear cabinet using appropriately rated mounting supports. Within the stated operating limits, the inverter maintains stable output control and timing accuracy while its airflow path removes heat generated by the power electronics.
