PSI6100.321-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6100.321-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a mains voltage of 400 to 480 VAC and a frequency of 50 or 60 Hz, and uses air cooling with a maximum cooling loss of 360 W. The inverter features an integrated power supply unit providing 24 VDC output voltage at up to 2 A, is rated IP20, and weighs approximately 20 kilograms.
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Product Description:
The PSI6100.321-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It serves as the power conversion stage in automation cells where adjustable medium-frequency energy is required for induction heating, brazing, or specialized drive tasks. By transforming factory mains power into a controlled, higher-frequency output, the unit allows precise process tuning without mechanical speed variation. The integrated design also reduces the number of separate power-conversion components required inside the control cabinet.
The inverter connects to three-phase utility lines rated at 400–480 VAC and accepts line frequencies of 50 or 60 Hz, so it can operate on common industrial power grids without an autotransformer. An enclosure classification of IP20 protects against accidental contact while leaving ventilation paths open for the air-cooled design. Internally, a regulated bus provides 24 VDC for sensors, relays, or fieldbus nodes, removing the need for a separate control supply. Maximum thermal dissipation reaches 360 W, which determines panel airflow requirements and indicates that forced air is sufficient for continuous operation. Integrated INTERBUS timing hardware supports synchronous communication with upstream motion or process controllers. This communication arrangement allows control commands and process data to be exchanged through the automation network without requiring a separate timing module.
The inverter supports operation under 3K3 conditions according to EN 60721-3-3, making it suitable for installation in typical protected industrial locations. The built-in 24-volt rail can supply up to 2 A, providing enough current for typical contactors or light input and output loads. Operation is permitted from +10 to +55 °C, while storage and transportation are permitted from -25 to +70 °C. These temperature limits allow the unit to remain in unconditioned storage areas before installation while requiring suitable cabinet temperature control during use. With a mass of 20 kg, the inverter can be secured to a standard cabinet backplate without additional structural reinforcement. Its forced-air design eliminates the plumbing, pumps, and heat exchangers associated with liquid-cooling circuits.
