PSI64C0.729-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI64C0.729-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It is water cooled, has a weight of 40 kg, and measures 653 mm in height, 288 mm in width, and 280 mm in depth. The inverter features an Ethernet I/O connection, operates with mains voltages from 400 to 480 VAC, and supports a maximum primary current of 1600 A.
Internal Product Review
The PSI64C0.729-W1 is a medium frequency inverter with water-cooled thermal management suited for demanding industrial duty. Operation across 400 to 480 VAC and Ethernet I/O support make system integration efficient and technically clean. A 54 kA maximum secondary current stands out as a strong performance advantage for intensive process applications.
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Product Description:
The PSI64C0.729-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. In automated welding, induction heating, or forging cells, this unit modulates high currents at controlled frequencies so transformers and coils can deliver consistent thermal energy to the workpiece. By converting a three-phase utility supply into a regulated medium-frequency output, it lets motion controllers synchronize heat profiles with mechanical positioning. This arrangement is useful in processes where thermal consistency must follow cycle timing as closely as axis motion.
This inverter uses a water-cooled heat-exchange circuit, so cabinet basic losses of 69 W plus switching losses are carried away without relying on ambient airflow. The power stage accepts a mains input of 400 – 480 VAC, and the rectifier draws a nominal line current of 220 A during steady production. When the IGBTs switch at full duty, cooling circuits must absorb up to 700 W of thermal load, and the hydraulic plate and hose assembly can tolerate a system pressure of 10 bar. Real-time coordination with plant controls is handled by an Ethernet I/O interface driven by a TriCore CPU, allowing deterministic cycle triggers and parameter transfers. The integrated control platform also helps the inverter respond quickly to changing process commands during repetitive heat cycles.
The high-current side is dimensioned for a maximum primary draw of 1600 A, while the matching transformer winding can deliver up to 54 kA on the secondary for short-duration peaks. To keep temperature rise within limits, the cooling loop must maintain at least 4 l/min of flow. Electrical feeders require a 95 mm² cable set, and the enclosure measures 653 mm high, 288 mm wide, and 280 mm deep while weighing 40 kg. A timer synchronized over Ethernet permits precise dwell times, so heating profiles align with motion phases without adding external sequencers.
