PSI6200.115-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6200.115-W1 is a medium frequency inverter in the PSI Frequency Inverters series. It uses water cooling, supports a maximum cooling water pressure of 10 bar, and operates with mains voltages between 400 and 480 VAC. The inverter has a protection rating of IP20, handles a nominal current of 220 A, and measures 653 mm in height, 288 mm in width, and 280 mm in depth.
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Product Description:
The PSI6200.115-W1 is a medium frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts three-phase plant power into a controlled medium-frequency output used for induction heating, brazing, and forging tasks in industrial automation. By combining power conversion, water cooling interfaces, and 24 V control I/O in one enclosure, the unit provides a compact drive component for switch-cabinet installation where precise current regulation and fast energy transfer are required.
Electrically, the unit accepts a three-phase mains supply at 400-480 VAC and draws a nominal line current of 220 A under rated load. A force-commutated bridge raises the switching frequency to 1 kHz, generating the medium-frequency waveform demanded by the work coil. The inverter can supply up to 1200 A on the primary side, while the isolated secondary can momentarily deliver 54 kA for high-energy pulses. An integrated 24 VDC power supply rated at 2 A feeds sensors, contactors, and the discrete 24 V I/O interface, and the same voltage drives the internal timer circuit. Cabinet heat dissipation is limited to 210 W at maximum current. The housing measures 653 mm in height, 288 mm in width, and 280 mm in depth, enabling front-access mounting in standard enclosures.
Thermal management is based on water cooling. A minimum flow of 4 l/min is required, producing a pressure drop of 0.6 bar across the exchanger. Incoming coolant must stay below 30 °C, and the circuit withstands line pressures up to 10 bar. These limits keep semiconductor junctions within safe temperature ranges during prolonged operation and at surge currents. The design carries an IP20 degree of protection, so the inverter must be mounted inside a closed cabinet but does not need additional forced air because the 210 W of loss power is removed by the cooling water. Continuous service is maintained as long as the flow, temperature, and pressure values are kept within range.
