Product Description:

The TVM 1.2-050-220/300-W0/220/380V is a power supply module built by Bosch Rexroth Indramat for the TVM Power Supply Modules series. It converts three-phase mains power into a stabilized DC bus and auxiliary rails that feed drive controllers in industrial automation cells. The unit is a Power Supply Module in configuration 2 and is part of series 1 within the TVM line. This layout allows one supply section to support both the main drive bus and related control circuits.

The module accepts a mains supply of AC 220 V with an input tolerance of +15/-10% and operates at 50 to 60 Hz. An internal rectifier establishes the nominal DC bus at DC 300 V; under steady load, the bus can deliver 7.5 kW while supplying a continuous current of 25 A. Type ratings of 50 A and 15 kW indicate the upper thermal limits of the frame. The device can absorb up to 14 kWs of regenerative energy and dissipate it through a 0.30 kW bleeder, which helps protect the capacitors during braking cycles. Heat is removed by natural convection, and the bus terminals accept 4 mm² cables. Control electronics may be fed from either 230 V AC or 400 V AC, and insulation category C with humidity class F indicates the permitted ambient conditions. The enclosure is rated IP10 against accidental contact.

Short bursts are handled by a peak capability of 150 A that can be maintained for 300 ms without triggering an overcurrent shutdown. Auxiliary outputs include an unregulated 24 V rail rated at 4 A and a +15 V rail limited to 0.85 A. The unregulated 24 V output is suited to devices such as contactors and brake magnets. These auxiliaries share a voltage tolerance of +10/-15%, which keeps downstream electronics within their operating range while the main supply runs at full duty. This arrangement allows the control supply and the main DC bus to be sourced from the same module.