Product Description:

Bosch Rexroth Indramat manufactures the TVM 1.2-050-220/300-W1/220/380, a regulated power supply module in the TVM Power Supply Modules series. It mounts in the drive cabinet alongside servo controllers and serves as the central power source for the connected system. The unit converts plant-level three-phase mains into a stabilized DC link and includes bleeder circuitry to absorb surplus regenerative energy during braking.

On the mains side, the module accepts AC 220 V at 50 to 60 Hz, and the input can vary by +15/-10% without losing regulation. Its rectifier and filter stage raise the supply to a stable DC 300 V bus for attached servo amplifiers. The power section can supply a continuous armature current of 25 A, which supports moderate-power axes under steady load. In this operating range, the unit is identified as configuration 2 and Series 1.

Thermal management is handled by a built-in blower, allowing the module to dissipate up to 0.30 kW through its continuous bleeder path. For short transients, it can deliver a peak current of 50 A, giving the DC link additional headroom during acceleration or brief overload conditions. Dedicated control logic is powered separately from an AC 230 V or 400 V auxiliary supply, which helps isolate monitoring circuits from disturbances on the main power section. A voltage tolerance of +10/-15% applies to this auxiliary supply, helping the control electronics remain stable when plant power varies.