Product Description:

The TVM 2.1-050-220/300-W1 is a regulated DC power supply module built by Bosch Rexroth Indramat for drive assemblies in the TVM Power Supply Modules series. In automation cells, it converts three-phase mains energy into a stabilized internal bus that feeds servo drives and braking circuits while managing regenerated power. It is configuration code 1 within series version 2, so it installs as a standalone supply section. Its primary task is to maintain the common DC link inside tolerance so motion axes receive consistent voltage during acceleration and deceleration. This arrangement lets several connected axes share one regulated source and reduces voltage variation when load demand changes rapidly.

The module dissipates braking energy through a bleeder rated at 0.45 kW, allowing continuous heat removal without external resistors. It can deliver a sustained DC output of 25 A, which sets the long-term current available to connected inverter amplifiers. Thermal control is ensured by a built-in blower, and the internal fan moves air across the heat sinks inside the housing. Mains connection expects AC 220 V and operates over a frequency range of 50–60 Hz. A permissible mains swing of +15/-10% allows the unit to remain in service when incoming voltage rises or falls within the stated range.

Inside the unit, the rectifier and filter establish a nominal bus potential of DC 300 V, forming the reference for servo inverters that require a steady intermediate circuit. For short acceleration intervals, the design accepts a type current of 50 A, giving connected drives additional headroom before protective shutdown occurs. Components on the control board are dimensioned for a separate logic supply with a tolerance window of ±15%, so command electronics remain stable even when the main link is heavily loaded. The separate logic supply helps the control section stay responsive during abrupt load changes and supports orderly interaction between power conversion and drive control.