PSI63C0.758-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.758-L2 is a medium frequency inverter from the PSI Frequency Inverters series and is designed with a TriCore CPU and an Ethernet I/O interface. This inverter features a control output voltage of 24 VDC at 2 amps, accommodates a mains voltage range of 480 to 690 VAC, and supports a maximum primary current of 800 amps. It is air cooled, provides IP20 protection, and offers metal oxide varistor overvoltage protection.
Internal Product Review
The PSI63C0.758-L2 is a medium frequency inverter with air-cooled operation and IP20 protection. A TriCore CPU and an Ethernet I/O interface support fast control response and straightforward integration into modern drive systems. Compatibility with TN, TT, and IT mains and a 480 - 690 VAC input range makes the inverter a strong choice for demanding power conversion.
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Product Description:
The PSI63C0.758-L2 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for induction heating, welding, or similar processes, the unit converts three-phase plant power into a regulated medium-frequency output that drives specialized transformer or coil loads in automated equipment. It interfaces with higher-level controllers through Ethernet and supplies auxiliary 24 V logic power, allowing it to coordinate precisely with motion axes and safety relays on the factory floor.
The inverter accepts line voltages from 480 - 690 VAC, so it connects directly to high-voltage distribution without step-down transformers. When running at rated load, it draws a nominal line current of 110 A, and the primary stage can pass up to 800 A during short-term overloads to support dynamic heating ramps. Input frequency compatibility spans 50 or 60 Hz, letting the same model operate in plants with either standard. Inside the power module, insulated-gate drivers chop the DC link with 1 kHz pulse-width modulation for the medium-frequency output. MOV-based overvoltage clamps protect the semiconductor devices. TN, TT, or IT mains connection topology is supported, phase-to-ground stress is limited to 600 VAC, and the minimum busbar cross-section is 35 mm².
The control section is supplied by a dedicated bus that delivers 24 VDC, and its digital outputs can source up to 2 A maximum for contactors or indicator lamps. A TriCore CPU executes timing and diagnostic tasks while storing up to 256 user programs that are selected over the Ethernet I/O interface or by the integrated Ethernet timer function. The enclosure carries an IP20 rating, so it must be mounted inside a cabinet while still allowing access to the interfaces. Forced air moves across the heat-sink fins as the designated cooling method, so the cabinet layout must leave clear airflow paths through the power section.
