Product Description:

The TVM1.2-50-220/300-W1-115/220 is a regulated power supply module produced by Bosch Rexroth Indramat for the TVM Power Supply Modules series. It rectifies and filters incoming three-phase mains power, then distributes controlled DC power to connected servo drives while dissipating regenerative energy during deceleration. Within an automation cabinet, it serves as a shared energy source that supports bus stability, coordinates braking energy, and monitors line conditions for multi-axis motion systems. This arrangement lets several connected axes operate from a common supply section instead of relying on separate power units for each drive.

This module can deliver up to 15 kW of continuous output while operating from a three-phase supply of 220 V AC at its 50 A type-current rating. Inside the unit, the rectifier and smoothing stage establish a constant 300 V DC bus that is routed to the drive stack. Transient overvoltage produced by regenerative braking is handled by a bleeder resistor that accepts a peak of 10 kW for safe dissipation. During hard acceleration, the bus can supply up to 150 A for 300 ms, which helps connected drives support short-term torque demand without a separate booster supply. A built-in blower powered from a 115 V AC auxiliary line forces air across the heat sink fins, and its 30 W fan load supports stable thermal operation inside the cabinet.

The energy returned to the bus by connected axes may reach 14 kWs before the bleeder cycle must end, which helps prevent overcharging of the storage capacitors. Internal losses remain below 550 W, so the module adds a manageable heat load to enclosed control cabinets. Operation is permitted up to 55 °C ambient, with output derating above 45 °C, and the IP10 housing is intended for closed electrical enclosures with filtered airflow. With a transport mass of 15 kg, the unit can be mounted vertically in 300 mm control racks using standard TVM guide rails and bus bars. Its rack-mounted format also helps keep power distribution orderly when multiple drives share the same DC bus.