PSI6100.105-L1 Bosch Rexroth Indramat
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The PSI6100.105-L1 is a medium frequency inverter manufactured by Bosch Rexroth Indramat and is part of the PSI Frequency Inverters series. It supports a maximum primary current of 400 Amps, mains voltage from 400 to 480 Volts AC, and features air cooling with IP20 protection. The inverter has basic cabinet losses of 69 W, can control up to 32 electrodes, and offers 256 program slots.
Internal Product Review
The PSI6100.105-L1 is a medium frequency inverter with air-cooled operation. A 400 to 480 VAC mains voltage and 110 A nominal current give the unit strong suitability for demanding power applications. A 1 kHz PWM primary voltage form and support for 256 programs make the platform especially capable for repeatable, production-focused control.
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Product Description:
The PSI6100.105-L1 belongs to the PSI Frequency Inverters series manufactured by Bosch Rexroth Indramat. This medium-frequency inverter conditions line power for welding controllers, induction heaters, and other automation cells that need accurate current pulses rather than sinusoidal drive. By converting three-phase mains energy into monitored DC and then into a pulse-width-modulated primary voltage, the unit supplies transformers with adjustable current while remaining compact enough for cabinet mounting.
During operation, the inverter draws a mains nominal current of 110 A from three-phase supplies rated at 400 – 480 VAC. It produces a 1 kHz PWM primary waveform, while its integrated 24 VDC power supply can deliver up to 2 A for control electronics and a timer circuit that also runs on 24 V. Basic cabinet heat dissipation is 69 W at idle and climbs to 170 W at maximum duty, so forced airflow is provided through the air-cooled chassis. The assembly has an IP20 rating, meaning live parts must be enclosed by the user’s switchgear housing. Discrete 24 V I/O terminals interface with external sequencers, and the clamp blocks accept conductors up to 50 mm².
Primary current can reach 400 A, and the secondary side of a PSG 3100 transformer may deliver up to 20 kA to welding electrodes. Connection bars require a minimum cross-section of 35 mm² to handle these peaks. Up to 32 electrodes can be controlled, and each can be selected through one of 256 stored programs so different materials or thicknesses can share a single inverter. Reliable operation is maintained up to 2000 m altitude, after which derating is advised. The unit remains air-cooled, and its primary-side losses are handled by the same thermal system used for the stated cabinet heat figures.
