Product Description:

The PSI6200.326-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts the plant’s three-phase mains supply into regulated high-frequency output for induction coils, spindle motors, or other loads that require controlled high-frequency energy in automated production cells. By delivering stable power at variable frequencies, the unit supports repeatable heat-treating, machining, and forming operations where precise electrical excitation is essential for process quality.

The inverter accepts a utility voltage range of 400 to 480 VAC at 50 or 60 Hz, allowing operation on standard industrial grids without autotransformers. Internal semiconductor losses are dissipated through a water-cooled plate, and the residual thermal load transferred to the coolant does not exceed 420 W, simplifying heat-exchanger sizing. Ingress protection is rated at IP20, so the unit must be mounted inside a closed control cabinet to shield live parts from contact and contaminants. The design meets climatic category 3K3 of EN 60721-3-3, indicating tolerance to humidity and vibration levels commonly encountered in factory environments. An INTERBUS interface provides timing functions that allow the inverter to synchronize its output with higher-level control systems.

An integrated auxiliary supply delivers 24 VDC at up to 2 A, providing power for sensors, relays, or fieldbus nodes without requiring an external source. Continuous operation is permitted at ambient temperatures from +10 °C to +55 °C, while storage is permitted from -25 °C to +70 °C when the unit is not operating. Incoming cooling water must meet the manufacturer’s temperature and flow requirements to maintain effective heat transfer from the power semiconductors. The enclosure weighs 25 kg, so suitable lifting aids should be used during cabinet installation.