PSI65C0.787-W1 Bosch Rexroth Indramat
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MPN: R911174280
The Bosch Rexroth Indramat PSI65C0.787-W1 is a medium frequency inverter from the PSI Frequency Inverters series and weighs approximately 25 kilograms. It features a water cooled design, operates at a mains voltage of 400 to 480 VAC, and is rated for 50 or 60 Hz. The inverter provides an integrated power supply unit with a 24 VDC output voltage and a maximum 2 A current, and offers IP20 protection.
Internal Product Review
The PSI65C0.787-W1 is a medium frequency inverter with water-cooled thermal management. Operation on 400 to 480 VAC at 50 or 60 Hz supports straightforward integration into established industrial power systems. An integrated 24 VDC power supply with up to 2 A output adds useful system support and rounds out a well-executed inverter package.
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Product Description:
The PSI65C0.787-W1 is a water-cooled power electronics module produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. In automated cells, it converts fixed-frequency three-phase line power into a controllable medium-frequency output. This adjustable output enables precise energy delivery to induction heating coils, high-speed spindles in machining centers, and specialized test rigs that require dynamic frequency adaptation. The module provides the regulated power needed to control processes in which operating frequency must change in response to equipment demands.
The unit accepts a supply of 400–480 VAC at line frequencies of 50 or 60 Hz. Internal switching stages are cooled by a liquid circuit, and the water-cooled design removes up to 420 W of thermal losses without transferring that heat directly into the cabinet air. The housing has a protection rating of IP20, which protects against contact with fingers and the entry of solid objects larger than 12.5 mm. Because this rating does not provide protection against water, the inverter must be installed inside a suitable enclosure. Bosch Rexroth classifies the assembly in climatic category 3K3 under EN 60721-3-3 for operation in controlled indoor locations. The installation must provide the required liquid connections and adequate clearance for safe access to the module.
The inverter includes an auxiliary supply that delivers 24 VDC at up to 2 A for sensors, contactors, or the embedded control board. Control sequencing can be synchronized over the plant network because the integrated timer supports Ethernet communication. The permitted ambient operating temperature ranges from +10 to +55 °C, while the unit can be stored or transported at temperatures from -25 to +70 °C. The chassis weighs approximately 25 kg and can be installed on a wall or inside a cabinet with appropriately rated mounting supports. Its mass must be considered when selecting rails, fasteners, and the supporting panel. Cooling hoses should be routed without sharp bends or mechanical strain so that liquid can circulate through the module without obstructing nearby equipment.
