Product Description:

The Bosch Rexroth Indramat PSI6200.356-W1 belongs to the PSI Frequency Inverters series and is classified as a medium frequency inverter. Intended for automated induction heating, brazing, and similar energy-intensive tasks, it converts standard plant power into regulated medium-frequency output that can be matched to work coils or transformers. The unit is installed inside a switch cabinet and communicates over the INTERBUS timer channel so that up to 256 internal programs can be selected from the host controller during operation. A water-cooled design with M16×1.5 connectors removes process heat and allows continuous duty in production lines.

The inverter accepts a three-phase supply of 400 – 480 VAC, letting it tie directly to common European and North American distribution panels. Under nominal conditions, the input line draws 220 A, which must be considered when sizing upstream circuit breakers and busbars. Control electronics are powered separately by a 24 VDC logic rail, and the built-in relay outputs can switch up to 2 A for contactors or status lamps. For short bursts of energy, the intermediate transformer can be charged with a peak primary current of 1200 A, giving the machine head sufficient magnetizing force without exceeding the continuous current limit. These values affect cable sizing and thermal loading.

During high-power pulses, the secondary circuit can deliver up to 54 kA, so the outgoing bus bars must be sized and braced to withstand electromagnetic forces. Effective heat removal is maintained by a minimum coolant flow of 4 l/min; when this rate is met, the exchanger keeps total thermal dissipation below the 700 W limit assigned to the water circuit. The electronic chassis has an IP20 rating, and installation guidelines call for 95 mm² conductors and an IP54 cabinet to accommodate cabinet loss figures of 210 W and 69 W.