PSI63C0.336-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.336-L1 is a medium frequency inverter from the PSI Frequency Inverters series, offering a mains voltage range of 400 to 480 VAC and logic supply voltage of 24 VDC. It features air cooling, IP20 protection, and program capacity for up to 256 programs with buffered RAM memory. The unit includes a V24/RS232 programming port and supports multiple connector types such as a 9-pin D-Sub, 5-pin, and 14-pin connectors.
Internal Product Review
The PSI63C0.336-L1 is a Bosch Rexroth Indramat medium frequency inverter with air-cooled operation. Support for 400 to 480 VAC mains voltage and a 24 VDC logic supply supports smooth integration in industrial power systems. Up to 9 weld impulses and 1 ms time resolution make this inverter especially effective for precise cycle control.
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Product Description:
The PSI63C0.336-L1 frequency inverter is manufactured by Bosch Rexroth Indramat and is part of the PSI Frequency Inverters series. Classified as a medium-frequency inverter, it converts three-phase mains power into regulated welding current for automated resistance welding cells and related industrial operations. This supports repeatable energy delivery and stable cycle coordination during production. Its operating role suits equipment that must regulate output closely from one weld sequence to the next.
The unit accepts a three-phase input of 400-480 VAC, which lets it run on standard factory supply networks without tap changes. Control electronics are supported by a separate 24 VDC logic rail, so stored settings remain available even when the power stage is off. Heat is removed through air cooling, which channels cabinet air across the inverter heat sink. With an enclosure rating of IP20, the device must be installed inside a switchgear cabinet to reduce exposure to accidental contact and airborne contamination. Program storage uses Flash Memory, and access is available through the V24/RS232 programming port on the X1 9-pin D-Sub. A buffered RAM area stores active programs, and additional digital and analog I/O are provided on X2 five-pin and X4 fourteen-pin connectors for process feedback.
The buffered RAM can hold up to 256 welding programs, each supported by a replaceable Lithium Type AA 3.6 V battery during extended shutdowns. Current for each weld can be adjusted in increments of 10 A, and timing commands use a resolution of 1 ms. Up to nine impulses may be sequenced per cycle to shape the thermal profile, while a 0-20 mA pressure output drives proportional pneumatic regulators. Overall cycle coordination is handled through the INTERBUS timer channel for synchronized welding steps.
