Product Description:

The PSI6100.629-L1 is a medium-frequency inverter developed by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for induction heating, forging, and other energy-intensive processes, the unit converts three-phase utility power into a regulated medium-frequency output that can be synchronized with automated sequences. This arrangement provides current regulation and programmable timing to stabilize temperature profiles in production cells. The inverter is suited to installations where repeatable heat delivery is needed during demanding industrial cycles.

Incoming power compatibility is broad, with a mains window of 400–480 VAC that connects directly to standard distribution boards. The control logic synchronizes to a line frequency of 50/60 Hz, allowing use on common industrial power systems without transformer adaptation. Internally, the inverter carries a continuous thermal rating of 110 A, providing sustained current for long heating runs, and it can supply up to 400 A for rapid energy bursts that support quick heat penetration. A switching clock of 1 kHz governs the output bridge, which helps reduce ripple and gives the process more consistent control.

The enclosure withstands ambient temperatures up to 55 °C when the cooling air stays within its limit and the installation altitude remains below 2000 m. Under these operating conditions, total heat rejected to the surrounding air reaches 360 W, so the required airflow and 100 mm clearance above and below the frame must be maintained. A protection rating of IP20 keeps live parts finger-safe while permitting the ventilation needed for its air-cooled design. Field wiring enters screw terminals that accept the intended conductor range, and a 24 V DC control supply keeps the DeviceNet timing circuits active during brief mains interruptions. This helps communication timing remain active during short supply disturbances.