Product Description:

The PSI63C0.630-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. In an automated line, the unit converts the plant’s three-phase supply into a controlled medium-frequency output. It can drive induction coils, resistive heaters, or specialized welding heads where repeatable thermal energy is required and direct mains frequency would be unsuitable.

The inverter accepts a mains window of 400–480 VAC and is protected to IP20, so it must be mounted inside a cabinet that keeps conductive dust away from its live parts. Drive parameters are exchanged with higher-level controls through a V24 channel that operates at 19200 bit/s using the 8E1 serial format; this rate is adequate for transferring heating profiles and diagnostic data. Runtime sequences are stored in Buffered RAM, which retains data as long as the lithium backup supply remains active, while permanent program code resides in flash memory. A time base of 1 ms governs every internal timer, so output pulses, counted to a current resolution of 10 A, can be synchronized precisely with process requirements. Up to nine impulses are available per cycle, and DeviceNet timing resources coordinate them with external sensors.

A lithium AA cell keeps the control logic alive at 3.6 V, allowing orderly shutdown and restart without losing user data. Thermal management relies on an air-cooled design that channels cabinet air across heat sinks, eliminating the need for liquid circuits in typical installations. Operators load or edit programs through the V24/RS232 interface, and the controller can archive as many as 256 distinct programs for different product recipes. The front X1 port uses a 9-pin D-Sub plug, and the recommended X1 cable length is 20 m, giving adequate reach from the drive to a supervisory PC or HMI.