Product Description:

The TVM 1.2-050-220/300-W0/115/220 is a power supply module designed by Bosch Rexroth Indramat for the TVM Power Supply Modules series. It converts line-side AC into a stabilized DC bus and houses an internal bleeder circuit, allowing connected drive controllers to recover regenerated energy during braking or deceleration. Within an industrial automation cabinet, this module supplies regulated power and absorbs excess energy so servo axes can cycle without external resistors or uncontrolled voltage rise.

The module accepts a nominal line input of 220 VAC and rectifies it to a DC link of 300 VDC. Under steady braking, the bleeder can dissipate 300 W, while short transients up to 10 kW are handled by the same resistor bank; this helps prevent overvoltage faults when large motors decelerate abruptly. Energy peaks are further buffered by an absorption capacity of 14 kWs, meaning the link capacitors and bleeder can absorb that amount of kinetic return before the voltage rises beyond the control band. Typical continuous motor demand is characterized by a type power rating of 15 kW, and internal losses from conversion and control electronics reach a maximum of 400 W, figures that help determine enclosure ventilation requirements.

Dynamic events are managed through a peak current capability of 150 A for 300 ms, allowing the bus to recharge rapidly after a high-inertia load releases energy. During normal operation, the supply delivers a type current of 50 A, matching mid-range multi-axis systems that draw steady power from the link. This operating range supports connected drives without pushing the module outside its intended load range. Weighing only 14.3 kg, the module can be mounted inside standard 19-inch racks or on backplates without excessive structural reinforcement.