PSI65C0.735-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI65C0.735-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It features a TriCore CPU, is water cooled, and provides IP20 protection. The inverter supports 24 VDC control supply, operates with a mains voltage of 400 to 480 VAC, and includes an Ethernet I/O interface.
Internal Product Review
The PSI65C0.735-W1 is a medium frequency inverter with a 400 to 480 VAC mains voltage range and water-cooled thermal management. Ethernet I/O and a TriCore CPU give the unit a modern control architecture well suited for demanding machine integration. IP20 protection supports clean cabinet installation, and the 1000 Hz sequence standard is a notable performance advantage.
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Product Description:
The PSI65C0.735-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Intended for industrial welding, brazing, and induction heating, the device delivers controlled kilohertz-level current so secondary coils receive the exact power demanded by the automation program. It sits between the plant mains and the workpiece, translating drive commands into repeatable energy bursts that support fast cycle times and consistent joint integrity. Because heat input can be managed precisely, the unit is well suited for automated processes that depend on stable energy delivery from one cycle to the next.
The inverter’s logic and safety circuits run from a separate 24 VDC supply, which also powers the interruptible stop path rated at 3 A. Heat generated by the IGBTs is removed through a water-cooled plate, keeping semiconductor junctions below their limit even in sealed cabinets. A TriCore processor supervises PWM generation, parameter tables, and diagnostic logging. Protective design follows the IP20 category, so installation inside an electrical enclosure is mandatory. The power section accepts 400 – 480 VAC three-phase input commonly found in production facilities, allowing direct connection without an isolation transformer. User data and status bits travel over an Ethernet I/O channel that links the inverter to the cell controller, so operating commands and response signals can be exchanged during active production.
Installation wiring uses a mains bus of 2×120 mm² copper, and the transformer conductors use the same size to keep current density within limits. Process control proceeds on a 1000 Hz sequence clock that drives up to 4 tip channels, enabling simultaneous management of parallel welding guns. Non-volatile memory stores 256 program lines, and a matching spot-name table supports organized storage of process names for production tracking. Parameterization is performed through a 9-pin D-Sub service port that carries a V24/RS232 signal. The inverter can address 32 electrodes, and an internal EtherNet-based timer coordinates pulse duration with auxiliary devices during synchronized machine operation.
