PSI63C0.778-W2 Bosch Rexroth Indramat
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MPN: R911173810
The Bosch Rexroth Indramat PSI63C0.778-W2 belongs to the PSI Frequency Inverters series and is a medium frequency inverter with a water cooled system. It supports mains voltages between 480 to 690 VAC and operates at 50 or 60 Hz. The device features an integrated power supply unit providing 24 VDC output voltage at up to 2 Amps and weighs approximately 25 kilograms.
Internal Product Review
The PSI63C0.778-W2 is a well-engineered medium frequency inverter with water-cooled thermal management that promotes stable operation. Support for 480 to 690 VAC input and 50/60 Hz mains compatibility simplifies integration into a wide range of industrial power systems. The integrated 24 VDC power supply rated at 2 A is a valuable feature for efficient control-side support.
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Product Description:
The PSI63C0.778-W2 frequency inverter is built by Bosch Rexroth Indramat and belongs to the PSI Frequency Inverters series. Classified as a medium-frequency inverter, it converts an incoming three-phase supply into a controlled medium-frequency output for induction heating, soldering, and similar production processes. Within automated lines, the device replaces motor-generator sets, allowing compact, solid-state power conversion and programmable control from the plant’s supervisory system. Its mechanical layout matches other PSI modules, which simplifies panel standardization across multi-output heating stations and supports an orderly enclosure arrangement.
The inverter accepts a three-phase mains range of 480–690 VAC, allowing the same model to operate on compatible plant networks within that range. The input stage operates at 50 or 60 Hz, so it can accommodate either supported mains frequency without derating. Heat is removed through a water-cooled baseplate, which keeps semiconductor junction temperatures below their limits during prolonged full-load operation. The housing carries an IP20 rating, providing protection against accidental contact with live components while requiring installation inside a suitable cabinet. An internal auxiliary converter provides a regulated 24 VDC service rail at up to 2 A, which can power contactors, sensors, or local control circuits without an additional supply. Ethernet timer functionality synchronizes inverter output bursts with PLC cycles for repeatable process timing, while the power topology is intended for resonant loads rather than variable-speed motors.
The cooling system must accommodate thermal losses of up to 420 W, and this value must be considered when selecting the chiller flow rate and cooling capacity. The permitted operating temperature range is +10 to +55 °C, allowing use in standard industrial control cabinets when adequate cooling is maintained. When the unit is not operating, it can be stored at temperatures from -25 to +70 °C without damage. The inverter weighs 25 kg, so the mounting surface and fasteners must support its mass securely. It meets climatic category 3K3 under EN 60721-3-3, making it suitable for standard control enclosures exposed to moderate humidity and a limited risk of condensation.
