PSI63C0.232-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.232-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It has a water cooled design, operates with a mains voltage of 400 to 480 VAC, and supports a primary output frequency of 1 kHz. This inverter features an IP20 degree of protection, integrated 24 VDC power supply unit rated at 2 A, and provides a PROFIBUS interface. It weighs approximately 25 kg and has a temperature operating range from 10 to 55 degrees Celsius.
Internal Product Review
The PSI63C0.232-W1 is a medium frequency inverter engineered for demanding industrial power conversion, featuring water-cooled operation and a 400 to 480 VAC mains voltage range. PROFIBUS I/O and IP20 protection support efficient integration and dependable cabinet installation. A 110 A nominal mains current stands out as a strong specification for high-load inverter service.
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Product Description:
The PSI63C0.232-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase mains power into adjustable medium-frequency power for induction heating, hardening, and similar industrial processes. Water cooling is integrated into the design, while PROFIBUS provides the fieldbus connection for I/O data exchange and the internal timer chain. During rated operation, the unit is installed inside an IP20 switch cabinet. Its operating conditions conform to climatic class 3K3 of EN 60721-3-3, allowing operation from +10 °C to +55 °C and storage at temperatures as low as -25 °C.
The inverter accepts a supply of 400–480 VAC at either 50 Hz or 60 Hz. Under nominal conditions, it draws 110 A, while the rectifier section can handle up to 800 A of primary current and deliver as much as 36 kA on the secondary side for short-duration pulses. The output stage reaches a primary frequency of 1 kHz, enabling precise energy delivery during workpiece heating. An internal 24 VDC auxiliary source supplies the control electronics and external sensors with up to 2 A of current, matching the integrated power supply rating. Cabinet losses rise to 110 W at the maximum inverter load, with 69 W attributed to basic switch-cabinet dissipation. Depending on the duty cycle, cooling losses are 360 W during standard operation and 420 W at the highest continuous load. The mains connection requires conductors with a minimum cross-sectional area of 35 mm². The inverter can store up to 256 user programs for different production processes.
The water circuit maintains thermal performance with a flow rate of 4 L/min and a pressure drop of only 0.1 bar, limiting pump demand and stress on the piping. The housing meets the IP20 protection class, so the inverter must be mounted inside a closed panel that prevents unintended contact with internal components. Its total mass is 25 kg, which helps simplify cabinet installation and structural support. The cabinet must provide enough capacity for the stated maximum cooling losses. Ambient humidity and dust levels must also remain within the limits of climatic class 3K3.
