Product Description:

The PSI62C0.132-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat and supplied in the PSI Frequency Inverters series. By modulating the DC link generated from a three-phase supply, the device delivers controllable medium-frequency current required for induction heating heads, resistance welders, and high-speed spindles. Water-cooled construction allows it to sit inside sealed electrical cabinets, so the equipment can be placed close to process zones without imposing high ambient heat loads on adjacent automation electronics.

Electrically, the inverter accepts a three-phase supply of 400 – 480 VAC and draws a mains nominal current of 220 A, so incoming conductors must match a required cross-section of 95 mm² to keep temperature rise within limits. Internal logic circuits are powered from a separate 24 VDC source that also feeds the 24 V timer subsystem. When operating at maximum output, cabinet losses reach 210 W; these losses combine with the switch-cabinet basic figure of 69 W and set the enclosure ventilation requirement. Parameterization and diagnostics are handled over an RS-232 service port that uses the 8-pin Mini-DIN hardware interface, the 8E1 data format, and a maximum transfer rate of 19200 bit/s. A Type B USB socket is provided for firmware loading and local logging.

Thermal management is completed by a sealed heat exchanger; at full duty the cooling circuit must accommodate 700 W of inverter losses while maintaining a minimum water flow of 4 l/min and staying below a pressure drop of 0.6 bar. The power stage can deliver pulses up to a primary current of 1200 A, allowing it to energize large induction coils or transformer secondaries without saturation. Control wiring arrives on the 14-pole STKK 3.5 mm X4 logic connector, isolating low-level signals from high-current busbars. The inverter can operate continuously inside industrial cabinets where space is tight and ambient air circulation is limited.