Product Description:

The TVM 1.2-050-220/330-W1/220/380V belongs to the TVM Power Supply Modules series manufactured by Bosch Rexroth Indramat. This unit is identified as configuration 2 within series 1 and functions as a regulated DC source for multiple drive controllers in automated machinery. By rectifying the three-phase mains and maintaining a stable intermediate circuit, the module delivers the energy needed for coordinated motor acceleration, dynamic braking, and control electronics inside an industrial cabinet.

The supply section is rated for a continuous output of 25 A, while the line side can draw up to 15 kW from a utility feed operating at 50...60 Hz. Both the main terminals and the integrated blower are designed for 220 V AC, with a permissible variation of +15/−10 percent. Internal control circuits accept either 230 V or 400 V AC, allowing the same unit to serve different plant voltages without a transformer. The DC bus is held around DC 300 V within ±15 percent, and the module can withstand surge demands up to 150 A for 300 milliseconds during rapid load changes. A built-in blower forces air across the heat sink, matching the blower winding to the same 220 V feed so no auxiliary supply is needed.

Energy returned by decelerating axes is absorbed by a bleeder resistor that can dissipate 0.30 kW continuously and store up to 14 kWs without exceeding component limits. Thermal design keeps total conversion loss to 550 W, permitting cabinet operation at ambient temperatures up to 55 °C when airflow is unobstructed. The type current is 50 A, which supports protective fuse sizing, and the additional voltage window of +10/−15 percent allows the DC link to stay online during moderate mains sag or swell. Overall mass is 15 kg, so the unit can be mounted on standard backplanes without extra reinforcement.