Product Description:

The PSI6100.190-W1 is a medium frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. The unit converts three-phase utility power into controlled medium-frequency energy for induction heating heads, transformers, or PSG secondary converters used in automated production cells. A 24 V DC control supply powers the internal logic and timing circuits, while the main power stage is commanded through fieldbus or discrete signals from the machine controller. The design assumes installation inside a cabinet, where water cooling and protective grounding are already available.

It accepts mains inputs of 400 – 480 VAC and chops them at a switching rate of 1 kHz so that downstream resonant tanks receive stable current. During steady operation the inverter supplies a nominal system current of 110 A; short loads can climb to 400 A without breaching semiconductor limits, and the matched PSG 3100 secondary can draw 20 kA. Surge energy is limited by the integrated MOV network. Ancillary requirements include a maximum cooling loss of 420 W, installation heights up to 2000 m, and conductor lugs up to 50 mm² on the output bus bars. A 100 mm clearance around the frame maintains airflow across auxiliary components.

Thermal control relies on a water-cooled heat sink fed at 4 l/min through an M16 × 1.5 threaded connector. Water entering must not exceed the 30 °C limit, and with proper flow the electronics tolerate ambient temperatures up to 55 °C. The housing carries an IP20 rating, suitable for guarded panels that prevent accidental contact yet allow service access. When mounted below 2000 m and within the stated temperature window, the inverter maintains its 1 kHz clock without derating, ensuring that process timers synchronized to the 24 V logic remain accurate across continuous production shifts.