Product Description:

The PSI6300.628-L1 is a medium-frequency inverter from Bosch Rexroth Indramat’s PSI Frequency Inverters series. It converts fixed utility power into a regulated, high-frequency output that drives induction heating coils, specialized weld transformers, or other loads that need precise current shaping in automated lines. By providing programmable energy pulses, the unit integrates into machine controls and supports repeatable thermal or metallurgical processes on the shop floor.

This inverter accepts three-phase input within the 400 – 480 VAC range and operates its power stage at a carrier of 1 kHz to limit harmonic distortion. Internal logic, contactors, and fans are powered from a dedicated 24 V DC control supply, while the air-cooled assembly removes the baseline thermal load of 69 W that is dissipated even at idle. During full conduction the output bridge can deliver up to 800 A and sustain a nominal system current of 110 A for continuous heating cycles. A three-phase configuration simplifies line balancing, and the cabinet accepts copper lugs up to 50 mm²; conductors are clamped on screw terminals that match the specified wire range of 35 mm². Closed-loop timing is handled through a DeviceNet timer object, and the clock signal synchronizes external motion axes that must track power bursts from the inverter.

The enclosure carries an IP20 ingress rating, so it is intended for mounting inside a protected cabinet where finger-safe shielding is still required. Overall height is 463 mm, width is 239 mm, and depth is 280 mm, allowing placement beside drives and PLC racks without exceeding standard panel depths. Under transient faults the output transformer can momentarily withstand a secondary current of 36 kA, and cumulative switching losses are capped by a maximum power cabinet loss of 170 W. Reliable operation is specified up to a surrounding air temperature of 55 °C, and phase conductors are landed on three clearly labeled studs to match the unit’s internal bus layout.