PSI61C0.782-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI61C0.782-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage of 400 to 480 VAC, operates with a line nominal current of 110 Amps, and features a TriCore CPU. The inverter has an IP20 degree of protection, requires air cooling, and provides Ethernet I/O at 100 Mbit per second.
Internal Product Review
The PSI61C0.782-L1 is a Bosch Rexroth Indramat medium frequency inverter built for high-demand drive service. A TriCore CPU and Ethernet I/O support fast control response and clean integration with modern automation architecture. A 110 A nominal line current and 400 to 480 VAC mains range make the unit a strong choice for industrial power conversion.
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Product Description:
The PSI61C0.782-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts three-phase utility power into a regulated output that drives induction coils, transformers, or other AC loads in automated production lines. By adjusting the switching pattern of its internal IGBTs, the unit supplies controlled current and voltage profiles that match process requirements. A TriCore CPU manages real-time control tasks through an integrated Ethernet interface, helping the inverter respond quickly to changes in load demand. This operating principle is suited to systems that need repeatable thermal input and tightly controlled electrical output during continuous production.
The inverter accepts a mains range of 400 – 480 VAC and draws a continuous line current of 110 A; during fast magnetization cycles it tolerates a primary current up to 400 A. This current capability supports applications that need rapid energy transfer during repeated heating pulses or similar process steps. Control and diagnostics are carried over 100BASE-TX links that run at 100 Mbit/s, and the same port also supports parameter transfer and status access over Ethernet. An air-cooled heat sink removes switching losses while the PWM stage operates at 1 kHz. The 3K3 climatic category supports installation in clean indoor cabinets, and the stated conductor size and terminal capacity support the power connections. Fast network communication also allows supervisory controls to read operating states and send updated setpoints without a separate interface module.
Field wiring is protected to an enclosure class of IP20, so the inverter must be installed inside an IP54 cabinet rather than exposed directly on the machine. Internal electronics are powered from a 24 VDC logic supply, and the unit can provide an auxiliary output of 2 A for connected sensors or interface circuits. Operation is permitted up to 2000 m above sea level without derating. Separating the logic supply from the main power section helps maintain stable signal handling, and the cabinet requirement supports safer routing of control and power wiring. The auxiliary supply can also simplify integration of nearby sensing devices within the same panel.
