Product Description:

The PSI63C0.757-W2 is a medium-frequency inverter produced by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It links high-voltage plant power to induction coils or specialized motors that require controlled medium-frequency energy for heating, cutting, or surface treatment processes. By modulating three-phase supply lines, the unit provides precise current and frequency regulation so production cells can maintain consistent thermal profiles, torque curves, or spindle speeds under rapidly changing load conditions.

The inverter uses a water-cooled thermal design, and internal channels route coolant directly past the power semiconductors. This arrangement limits junction temperatures and caps residual cabinet heat at 420 W. The input bridge accepts a supply range of 480–690 VAC, making the inverter compatible with common 480 V North American networks and 690 V European networks. Output gating remains synchronized because the control section tracks line cycles at 50 or 60 Hz, eliminating the need for an external frequency converter. The electronics are housed in an IP20 chassis, so additional protection is required when airborne dust or liquids are present.

The auxiliary power section delivers a stabilized 24 VDC rail with a maximum current of 2 A, allowing proximity sensors, contactors, or fieldbus modules to operate without a separate supply. Reliable operation is supported within an ambient temperature range of +10 to +55 °C, permitting installation in most factory spaces with moderate climate control. The inverter weighs approximately 25 kg, providing enough mass for stable cabinet mounting and vibration resistance. It also meets climatic class 3K3 under EN 60721-3-3 and tolerates storage temperatures as low as -25 °C. An Ethernet-based timer interface supports communication with higher-level controllers and allows timing functions to be coordinated with the surrounding automation system.