BOSCH REXROTH SERVO DRIVE PSI6300.333 L1 R911170468 GI1 PSI 6000 110A
BOSCH REXROTH PSI6300.333 L1 (Material No.R911170468, GI1, PSI6000 series, 110A) is an Indramat medium-frequency inverter dedicated for resistance welding machine systems. This medium frequency inverter uses IGBT power devices to convert 3-phase AC input into controlled medium-frequency AC output for welding transformers. The medium frequency inverter integrates welding sequence control, current/voltage closed-loop regulation and weld quality monitoring functions. The medium frequency inverter communicates with host PLC and BOS-5000 HMI via fieldbus for parameter setup, weld program selection and fault diagnosis. The medium frequency inverter serves as core power spare part for resistance spot welding cabinet overhaul and automotive welding production line retrofit.

This PSI6300.333 L1 unit is rated 110A output current, 400–480V 3AC input, designed for cabinet mounting with built-in multiple protection including overcurrent, overvoltage, overtemperature and short-circuit protection. PSI6300.333 L1 supports multi-schedule welding recipes, real-time weld data logging and alarm recording. PSI6300.333 L1 requires matched welding transformer and timer signal connection, with limited cable length between inverter and welding transformer. PSI6300.333 L1 meets industrial EMC standards, widely deployed on automotive body spot welding, projection welding and heavy-duty resistance welding stations.

As high-current welding power hardware, this BOSCH REXROTH inverter ensures stable energy output and repeatable weld quality under continuous high-cycle welding operations. BOSCH REXROTH PSI6000 series spare parts include medium-frequency inverters, control boards, IGBT power modules and bus connectors for welding drive system maintenance. BOSCH REXROTH medium frequency inverters are trusted replacement units for legacy resistance welding machine power supply systems.