Product Description:

The PSI6100.336-L2 is a medium-frequency inverter built by Bosch Rexroth Indramat in the PSI Frequency Inverters series. The unit converts a three-phase industrial supply into a regulated mid-frequency output that drives PSG heating generators, resonant power supplies, and other automation loads that require controlled energy delivery. INTERBUS I/O and timer channels handle fieldbus communication, allowing the inverter to exchange control signals with surrounding automation equipment.

Electrical interfaces match heavy-duty plant utilities. It accepts line voltages of 480 – 690 VAC, allowing direct connection to medium-voltage distribution panels. A mains draw of 110 A indicates the continuous current demanded from upstream protection. On the inverter side, peak primary current reaches 400 A, and the PSG 3100 secondary circuit is rated for 20 kA, enabling short but intense energy bursts into an induction coil. Compatibility with 50/60 Hz networks removes the need for external converters, while the control stage is powered at 24 VDC to isolate low-level electronics. A 1 kHz PWM scheme modulates the primary voltage, and wiring requires at least a 35 mm² conductor with terminals that accommodate up to 50 mm². Cabinet heat dissipation is limited to 200 W, and the mains connection follows the grounded TN/TT standard.

Thermal and installation limits shape enclosure design. The frame carries a IP20 rating, so it must be placed inside a panel that adds ingress protection. Forced airflow cools the heat sink, and the incoming air may not exceed 45 °C. Operation remains within limits up to 2000 m altitude before derating is required. Panel placement should also account for the open housing and the required airflow path. Primary voltage modulation at 1 kHz reduces audible noise and eases filter sizing, and control wiring can share cable trays with power conductors when spacing rules are observed.