Product Description:

The TVM 1.2-050-W1-115V is a power supply module produced by Bosch Rexroth Indramat and included in the TVM Power Supply Modules series. It serves as the central DC bus source for servo drives, delivering regulated energy to axes in automated machinery. This unit is built as configuration 2 and internal series 1, which correspond to its terminal arrangement and diagnostic behavior. In a multi-axis cabinet, it supplies the shared bus that connected amplifiers use for motor power and regenerative energy exchange. Its circuitry is rated for a type current of 50 A, which suits medium-capacity motion systems that require stable bus power without additional external converters.

The supply delivers a continuous output current of 25 A at a nominal DC bus of 300 V, giving downstream inverters predictable voltage for vector or PWM control. The DC bus supports continuous power of 7.5 kW, while short acceleration bursts can draw up to 60 kW from the built-in capacitors before protective limits intervene. To dissipate surplus energy created during braking, a bleeder resistor absorbs 0.30 kW continuously. Control electronics are powered by a dedicated 115 V AC input, and a built-in blower moves cooling air through the heat sink. The module also provides auxiliary ±15 V supplies, with 1.3 A available on the positive rail and 1.0 A on the negative rail for encoder and logic loads.

The bleeder stage and blower support continuous mechanical power handling of 4.1 kW without thermal overload. During rapid deceleration, the capacitors can store up to 14 kWs of regenerated energy, which helps reduce peak line currents and improve power factor. Overall mains draw is limited to 550 VA under nominal conditions, and total internal heat generation remains near 130 W even at maximum load, which helps simplify cabinet ventilation. The module is used in high-cycle packaging, printing, and material-handling lines where repeated speed changes place steady demands on bus energy management.