Product Description:

The PSI63C0.178-L2 medium-frequency inverter is manufactured by Bosch Rexroth Indramat and belongs to the PSI Frequency Inverters series. Within an automation line, it converts incoming three-phase power into controlled medium-frequency energy that drives induction coils, regulated power supplies, or specialized test fixtures. By delivering programmable current profiles, it allows the electrical output to be matched to process requirements, improving repeatability and cycle consistency on the production floor.

Input compatibility spans a mains window of 480 – 690 VAC, allowing the inverter to operate on common North American and European plant grids without tap changes. From this supply, it can deliver up to 800 A of output current for short bursts, while a continuous nominal system current of 110 A sustains steady-state operation. The internal digital controller refreshes its modulation commands at a clock frequency of 1 kHz; combined with a time resolution of 1 ms, this update rate supports fine regulation of secondary current and phase angle. Surge events on the DC bus are suppressed by integrated metal-oxide varistors, and all field wiring up to 35 mm² terminates on screw clamps used for 24 V timer logic and sensor circuits.

Thermal management accounts for a cooling loss of 360 W in addition to a cabinet loss of 100 W, both removed by the built-in airflow. During fast energy transfer, the secondary winding can carry peaks of 36 kA, while the primary current limits help prevent transformer saturation. The housing has an enclosure rating of IP20, so the unit is intended for installation inside a control cabinet rather than on an exposed machine frame. For program control, the device stores 256 parameter sets and exchanges diagnostics over an RS-232 channel that reaches 19200 bit/s. A 3.6 V lithium cell backs up timer functions, and the pressure output circuit can source 20 mA into loads up to 500 Ω without affecting the regulation path.