PSI63C0.620-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.620-W2 is a medium frequency inverter from the PSI Frequency Inverters series that weighs approximately 25 kilograms and uses a water cooling method. It is rated for a mains voltage of 480 to 690 VAC with a frequency of 50 or 60 Hz, and has an IP20 degree of protection. The integrated power supply unit provides a maximum output current of 2 amps at 24 VDC.
Internal Product Review
The PSI63C0.620-W2 is a medium frequency inverter with water-cooled thermal management for stable performance under demanding load conditions. Operation on 480 to 690 VAC at 50 or 60 Hz supports dependable integration in higher-power drive systems. IP20 protection and a 24 VDC integrated power supply make this unit a strong choice for controlled industrial installations.
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Product Description:
The PSI63C0.620-W2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. In automated machining centers and induction heating stations, it converts a high-voltage three-phase mains supply into a regulated medium-frequency output, giving process controllers direct electrical control over thermal or spindle power. The design is intended for cabinet installation alongside drives and PLC hardware, where its electronic modulation capability replaces bulkier mechanical transformers and improves response time in power-demanding applications. The unit can adapt its output frequency during recipe changes or tool changes without requiring mechanical adjustments.
The inverter accepts a line-to-line input of 480–690 VAC, enabling direct connection to high-voltage factory grids. It synchronizes with utility supplies at 50 or 60 Hz, so no upstream frequency converter is required. Heat produced by the power stage is removed through a water-cooled baseplate that connects to a closed coolant loop. The housing carries an IP20 rating, providing protection against accidental contact with internal components while requiring an external enclosure for protection from dust or oil mist. Continuous operation is permitted at ambient temperatures from +10 to +55 °C. The unit meets climatic class 3K3 according to EN 60721-3-3, which establishes the permitted climatic conditions for operation in control rooms.
The integrated auxiliary supply delivers 24 VDC for relays, sensors, or the onboard DeviceNet timing interface. Its output current is limited to a maximum of 2 A, which must be considered when connecting multiple auxiliary loads. During sustained operation, the liquid-cooling circuit must dissipate 420 W of thermal losses, and this value can be used to size the associated pumps and radiators. The inverter can be stored or transported between -25 and +70 °C without a change in performance. It weighs 25 kg, so the cabinet shelf and mounting hardware must be capable of supporting the unit securely.
