Product Description:

The PSI6100.357-L2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It converts three-phase factory mains into a regulated medium-frequency output that can be integrated into automated heating, welding, or power-conversion stations. By combining power electronics, fieldbus connectivity, and supervisory logic in one cabinet-mountable unit, the inverter acts as a central energy module within an industrial automation cell. Its design targets installations that demand compact equipment footprints while still supporting high primary currents and integrated control services.

The inverter accepts a three-phase supply between 480–690 VAC, enabling connection to plant distribution panels. Under rated conditions, it draws 110 A, while startup or transient events can reach a peak of 400 A. Internal fans maintain temperature because the unit uses air cooling. For auxiliary circuitry, the unit offers an integrated 24 V DC rail that can source 2 A, and a separate logic input of the same voltage powers the control section. A standard CPU performs cycle timing, parameter processing, and diagnostic reporting. Process interfaces are handled over Interbus-S, and Interbus ID code 47 identifies the device to the network master.

Thermal dissipation inside the cabinet is predictable: basic losses are 100 W, and they rise to 200 W when the inverter operates at maximum primary current, so enclosure ventilation must be sized accordingly. Power conductors can be landed on terminals with a cross-section up to 50 mm², giving flexibility for cable runs. Surge events on the mains are limited by a metal oxide varistor (MOV) that clamps excessive voltage before it reaches sensitive components. Timing of gate pulses and fieldbus traffic is synchronized through the INTERBUS timer, and overall I/O handling remains deterministic because the same communication backbone carries both control and diagnostic data.