Product Description:

The PSI61C0.752-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. By synthesizing adjustable medium-frequency waveforms from standard factory mains power, the unit supplies induction-heating coils, high-speed spindles, or resonant power stages that require stable, programmable power in automated production cells. Its internal control core coordinates switching patterns, timing, and diagnostic routines so the inverter can operate as a stand-alone power module or integrate with higher-level PLCs through fieldbus links.

The power stage accepts a three-phase input between 400–480 VAC and expels heat through an air-cooled channel that relies on cabinet airflow to keep semiconductor temperatures within acceptable limits. An IP20 housing limits access to live parts while remaining compact enough for panel installation. Control electronics are supplied by a dedicated 24 VDC rail, and an auxiliary 3.6 V lithium cell maintains nonvolatile data when the main supply is removed. Command signals arrive through a 24 V I/O strip, while parameter sets can be loaded through a V24/RS232 service port. The internal event scheduler handles tasks with 1 ms resolution, and an Ethernet timer channel coordinates time-critical sequences with external controllers without drift.

The inverter operates at elevations up to 2000 m and delivers full rated performance at ambient temperatures not exceeding 55 °C. Program memory stores up to 256 user-defined sequences, allowing the drive to switch between recipes without reloading its operating program. The module withstands storage temperatures from -25 °C to 70 °C, protecting its components during transportation or long-term storage. An X1 service connector with a 9-pin D-Sub interface provides a common pinout for configuration tools. This service connection allows parameter transfer and diagnostic access without opening the inverter housing.