PSI6300.256-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.256-W1 is a medium frequency inverter from the PSI Frequency Inverters series with a water-cooled design and IP20 protection. It operates on a mains voltage of 400 to 480 VAC at 50 or 60 Hz, and features an integrated power supply unit with a maximum output of 2 Amps at 24 VDC. The inverter weighs approximately 25 kilograms and can handle cooling losses up to 420 Watts.
Internal Product Review
The PSI6300.256-W1 is a Bosch Rexroth Indramat medium frequency inverter with water-cooled thermal management and a 400–480 VAC input range. IP20 protection and PROFIBUS capability make the unit especially appealing for organized, networked industrial installations. A +10 to +55 °C operating range supports dependable performance in demanding production environments.
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Product Description:
The PSI6300.256-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. As a stand-alone power module, it generates adjustable medium-frequency outputs for induction heating coils, high-speed spindles, and other process loads that require tightly regulated current and voltage. The inverter incorporates its own auxiliary power source, reducing the number of external components needed in an automation panel. Its integrated PROFIBUS timer interface supports communication with Rexroth drive controllers and PLCs while coordinating operating sequences with the connected control system.
The inverter accepts three-phase utility power from 400 to 480 VAC, enabling operation on standard industrial distribution systems without a step-up transformer. Its input section operates with line frequencies of 50 or 60 Hz, allowing use with common industrial power networks. An onboard switch-mode power supply provides a stable control voltage of 24 VDC and a maximum output current of 2 A for contactors, sensors, and fieldbus electronics. The enclosure has an IP20 protection rating, which prevents contact with hazardous internal parts and blocks solid objects larger than 12 mm. The surrounding cabinet must provide additional protection against water, dust, and other contaminants present in the installation area.
The inverter uses a water-cooled design that transfers heat to a plate exchanger, helping limit temperature increases inside the cabinet during operation. Its maximum heat dissipation is 420 W, which must be considered when selecting the cooling circuit and heat exchanger capacity. Continuous operation is permitted at ambient temperatures from +10 to +55 °C, while storage is permitted at temperatures as low as −25 °C. These operating conditions correspond to climatic category 3K3 under EN 60721-3-3 for protected control-room installations. The built-in PROFIBUS timer coordinates firing sequences with upstream motion controllers, allowing process timing to remain synchronized with machine commands. The unit weighs 25 kg, making its mass an important consideration when selecting rack supports and mounting hardware.
