Product Description:

The PSI62C0.228-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for integrating variable power sources with induction heating or resonant power supplies, the unit converts a three-phase mains input into a regulated medium-frequency output suitable for process equipment. Its role in automation is to deliver precise, programmable energy to coils, heaters, or generators while exchanging status data with higher-level controllers through its PROFIBUS communication port.

The inverter accepts a three-phase supply at 400 - 480 VAC and operates over a line frequency of 50/60 Hz. Power is distributed across three-phase conductors, and the enclosure provides an IP20 degree of protection against accidental finger contact. Internal surge arresters and an MOV network protect the DC link against overvoltage events. Application logic is stored in battery-buffered RAM, and up to 256 individual programs can be recalled without external memory cards. A TriCore CPU executes timing tasks, and a PROFIBUS timer block synchronizes drive cycles with plant controllers so that frequency ramps and dwell periods follow commanded recipes.

The water-cooled heat sink keeps semiconductor temperatures stable, and the cooling circuit allows up to 10 bar of pressure with a water outlet temperature not exceeding 30 °C. At the cabinet level, the integrated power supply furnishes 24 VDC control voltage at 2 A for auxiliaries such as sensors or contactors, eliminating the need for a separate power module. Installation at elevations up to 2000 m is permitted without derating, and the 3K3 climatic category supports indoor use in areas with moderate humidity. Water cooling reduces the need for internal airflow, which helps limit dust movement inside the cabinet. The PROFIBUS I/O interface supports deterministic communication with supervisory PLCs.