PSI6100.642-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6100.642-W1 is a medium frequency inverter from the PSI Frequency Inverters series and uses water cooling with an IP20 protection rating. It supports mains voltage between 400 and 480 VAC, provides 8 discrete inputs and outputs, and uses the DeviceNet protocol for I/O communication. The inverter is rated for a max primary current of 400 Amps and requires a minimum water flow of 4 liters per minute.
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Product Description:
The PSI6100.642-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts three-phase mains power into controlled medium-frequency output for induction heating, welding, or similar automation tasks where precise energy delivery is required. By integrating power electronics, internal control logic, and field I/O in one enclosure, the unit serves as the central power stage in production cells that rely on fast, repeatable heating sequences. Its compact arrangement helps keep control functions and power conversion in the same cabinet space without requiring separate external modules for basic operation.
Electrically, the inverter accepts a three-phase supply of 400–480 VAC and draws a nominal line current of 110 A while operating at rated load. For brief heat-up surges, the primary circuit can deliver up to 400 A, and the output transformer can supply secondary pulses as high as 20 kA. The modulation block follows a sequence standard of 1000 Hz, giving the workpiece a stable medium-frequency energy input during repeated process cycles. Control electronics run from an internal 24 VDC rail limited to 2 A, and the stop circuit interrupts power with a 24 VDC / 3 A load when emergency conditions are detected. Eight discrete inputs and eight discrete outputs are mapped through a DeviceNet interface, and that network also supports the built-in timer function for coordinated cycle execution. This arrangement allows process commands and status signals to remain organized through the same communication path.
Thermal management relies on water cooling, and the heat exchanger must receive at least 4 l/min of flow, which causes a 0.1 bar pressure drop through the channels. With this flow, the unit remains within an enclosure rated IP20 for touch safety when installed in a cabinet. The frame measures 463 mm in depth and 448 mm in height, allowing stack installation above other drive components. Water jackets surround the modules, so panel air stays cool and nearby electronics remain within their normal operating range. This cooling method also reduces the amount of heat released directly into the cabinet compared with fully air-cooled power sections.
