PSI63C0.100-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.100-W1 is part of the PSI Frequency Inverters series and operates as a medium frequency inverter. It uses a 24 VDC control supply and a water-cooled cooling method while supporting a mains voltage of 400 to 480 VAC. With an IP20 protection rating, it supports up to 5 electrodes and features a buffered RAM program memory with a maximum of 256 programs.
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Product Description:
The PSI63C0.100-W1 is a medium-frequency inverter developed by Bosch Rexroth Indramat for the PSI Frequency Inverters series. In automated welding and heating installations, it converts three-phase utility power into controlled medium-frequency output so that process controllers can shape current profiles with millisecond precision. The unit is intended for cabinet mounting, and its separate logic supply keeps low-level control electronics apart from the high-energy conversion section. It is suited to applications where repeatable current delivery and coordinated sequencing are required across multiple production steps.
The inverter accepts a line-voltage range of 400 – 480 VAC, so it can connect directly to standard industrial distribution without an intermediate transformer. Internal logic and I/O are energized by a 24 VDC control supply, which separates low-level circuitry from the high-power path. A closed liquid circuit removes switching losses because the power stage is water-cooled, allowing full output in tight cabinets. The housing is rated IP20, so it is finger-safe but must remain inside a clean, dry control cabinet. Current can be adjusted in increments of 10 A, which helps match thermal input to material thickness and process timing. This supports repeatable thermal input during resistance welding and similar heat-treatment processes.
For peak demands, the current limit can be set as high as 250 kA, and the inverter holds that setpoint with ripple not exceeding ±5%, which helps keep heat input uniform. Up to 256 individual programs are stored in buffered RAM and remain available after a loss of line power. Program transfer uses a 9-pin D-Sub V24/RS232 port, while time-based sequences use a 1 ms timer for precise step control. The analog pressure output provides 20 mA into loads up to 500 Ω so external pneumatic regulators can follow the programmed sequence in synchronized welding cells.
